The following changes since commit b2f7a038bb4c4fc5ce6b8486e8513dfd97665e2a: Merge remote-tracking branch 'remotes/rth/tags/pull-softfloat-20181104' into staging (2018-11-05 10:32:49 +0000) are available in the Git repository at: git://repo.or.cz/qemu/kevin.git tags/for-upstream for you to fetch changes up to 1240ac558d348f6c7a5752b1a57c1da58e4efe3e: include: Add a comment to explain the origin of sizes' lookup table (2018-11-05 15:29:59 +0100) ---------------------------------------------------------------- Block layer patches: - auto-read-only option to fix commit job when used with -blockdev - Fix help text related qemu-iotests failure (by improving the help text and updating the reference output) - quorum: Add missing checks when adding/removing child nodes - Don't take address of fields in packed structs - vvfat: Fix crash when reporting error about too many files in directory ---------------------------------------------------------------- Alberto Garcia (7): block: replace "discard" literal with BDRV_OPT_DISCARD macro qcow2: Get the request alignment for encrypted images from QCryptoBlock quorum: Remove quorum_err() quorum: Return an error if the blkverify mode has invalid settings iotest: Test the blkverify mode of the Quorum driver quorum: Forbid adding children in blkverify mode iotest: Test x-blockdev-change on a Quorum Cleber Rosa (1): iotests: make 083 specific to raw Daniel P. Berrangé (1): crypto: initialize sector size even when opening with no IO flag Kevin Wolf (12): vpc: Don't leak opts in vpc_open() block: Update flags in bdrv_set_read_only() block: Add auto-read-only option rbd: Close image in qemu_rbd_open() error path block: Require auto-read-only for existing fallbacks nbd: Support auto-read-only option file-posix: Support auto-read-only option curl: Support auto-read-only option gluster: Support auto-read-only option iscsi: Support auto-read-only option block: Make auto-read-only=on default for -drive qemu-iotests: Test auto-read-only with -drive and -blockdev Leonid Bloch (2): vdi: Use a literal number of bytes for DEFAULT_CLUSTER_SIZE include: Add a comment to explain the origin of sizes' lookup table Li Qiang (1): block: change some function return type to bool Max Reitz (5): option: Make option help nicer to read chardev: Indent list of chardevs qdev-monitor: Make device options help nicer object: Make option help nicer to read fw_cfg: Drop newline in @file description Peter Maydell (5): block/qcow2: Don't take address of fields in packed structs block/qcow: Don't take address of fields in packed structs block/qcow2-bitmap: Don't take address of fields in packed structs block/vhdx: Don't take address of fields in packed structs block/vdi: Don't take address of fields in packed structs Stefan Weil (1): qemu-io-cmds: Fix two format strings Thomas Huth (1): block/vvfat: Fix crash when reporting error about too many files in directory qapi/block-core.json | 7 + block/vhdx.h | 12 +- include/block/block.h | 5 +- include/qemu/option.h | 2 +- include/qemu/units.h | 18 + include/sysemu/block-backend.h | 6 +- block.c | 60 ++- block/block-backend.c | 8 +- block/bochs.c | 17 +- block/cloop.c | 16 +- block/curl.c | 8 +- block/dmg.c | 16 +- block/file-posix.c | 19 +- block/gluster.c | 12 +- block/iscsi.c | 8 +- block/nbd-client.c | 10 +- block/qcow.c | 18 +- block/qcow2-bitmap.c | 24 +- block/qcow2.c | 66 +-- block/quorum.c | 45 +- block/rbd.c | 14 +- block/vdi.c | 68 +-- block/vhdx-endian.c | 118 ++--- block/vhdx-log.c | 4 +- block/vhdx.c | 18 +- block/vpc.c | 2 + block/vvfat.c | 15 +- blockdev.c | 3 +- chardev/char.c | 2 +- crypto/block-qcow.c | 2 + qdev-monitor.c | 13 +- qemu-img.c | 4 +- qemu-io-cmds.c | 4 +- util/qemu-option.c | 32 +- vl.c | 15 +- tests/qemu-iotests/081 | 116 +++++ tests/qemu-iotests/081.out | 70 +++ tests/qemu-iotests/082.out | 956 ++++++++++++++++++++--------------------- tests/qemu-iotests/083 | 2 +- tests/qemu-iotests/232 | 147 +++++++ tests/qemu-iotests/232.out | 59 +++ tests/qemu-iotests/group | 1 + 42 files changed, 1266 insertions(+), 776 deletions(-) create mode 100755 tests/qemu-iotests/232 create mode 100644 tests/qemu-iotests/232.out From: Thomas Huth <thuth@redhat.com> When using the vvfat driver with a directory that contains too many files, QEMU currently crashes. This can be triggered like this for example: mkdir /tmp/vvfattest cd /tmp/vvfattest for ((x=0;x<=513;x++)); do mkdir $x; done qemu-system-x86_64 -drive \ file.driver=vvfat,file.dir=.,read-only=on,media=cdrom Seems like read_directory() is changing the mapping->path variable. Make sure we use the right pointer instead. Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/vvfat.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/block/vvfat.c b/block/vvfat.c index XXXXXXX..XXXXXXX 100644 --- a/block/vvfat.c +++ b/block/vvfat.c @@ -XXX,XX +XXX,XX @@ static int init_directories(BDRVVVFATState* s, mapping = array_get(&(s->mapping), i); if (mapping->mode & MODE_DIRECTORY) { + char *path = mapping->path; mapping->begin = cluster; if(read_directory(s, i)) { - error_setg(errp, "Could not read directory %s", - mapping->path); + error_setg(errp, "Could not read directory %s", path); return -1; } mapping = array_get(&(s->mapping), i); -- 2.19.1 From: Alberto Garcia <berto@igalia.com> Signed-off-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/block.c b/block.c index XXXXXXX..XXXXXXX 100644 --- a/block.c +++ b/block.c @@ -XXX,XX +XXX,XX @@ QemuOptsList bdrv_runtime_opts = { .help = "try to optimize zero writes (off, on, unmap)", }, { - .name = "discard", + .name = BDRV_OPT_DISCARD, .type = QEMU_OPT_STRING, .help = "discard operation (ignore/off, unmap/on)", }, @@ -XXX,XX +XXX,XX @@ static int bdrv_open_common(BlockDriverState *bs, BlockBackend *file, } } - discard = qemu_opt_get(opts, "discard"); + discard = qemu_opt_get(opts, BDRV_OPT_DISCARD); if (discard != NULL) { if (bdrv_parse_discard_flags(discard, &bs->open_flags) != 0) { error_setg(errp, "Invalid discard option"); @@ -XXX,XX +XXX,XX @@ int bdrv_reopen_prepare(BDRVReopenState *reopen_state, BlockReopenQueue *queue, update_flags_from_options(&reopen_state->flags, opts); - discard = qemu_opt_get_del(opts, "discard"); + discard = qemu_opt_get_del(opts, BDRV_OPT_DISCARD); if (discard != NULL) { if (bdrv_parse_discard_flags(discard, &reopen_state->flags) != 0) { error_setg(errp, "Invalid discard option"); -- 2.19.1 From: Stefan Weil <sw@weilnetz.de> Use %zu instead of %zd for unsigned numbers. This fixes two error messages from the LSTM static code analyzer: This argument should be of type 'ssize_t' but is of type 'unsigned long' Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- qemu-io-cmds.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index XXXXXXX..XXXXXXX 100644 --- a/qemu-io-cmds.c +++ b/qemu-io-cmds.c @@ -XXX,XX +XXX,XX @@ static int readv_f(BlockBackend *blk, int argc, char **argv) memset(cmp_buf, pattern, qiov.size); if (memcmp(buf, cmp_buf, qiov.size)) { printf("Pattern verification failed at offset %" - PRId64 ", %zd bytes\n", offset, qiov.size); + PRId64 ", %zu bytes\n", offset, qiov.size); ret = -EINVAL; } g_free(cmp_buf); @@ -XXX,XX +XXX,XX @@ static void aio_read_done(void *opaque, int ret) memset(cmp_buf, ctx->pattern, ctx->qiov.size); if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { printf("Pattern verification failed at offset %" - PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); + PRId64 ", %zu bytes\n", ctx->offset, ctx->qiov.size); } g_free(cmp_buf); } -- 2.19.1 From: Peter Maydell <peter.maydell@linaro.org> Taking the address of a field in a packed struct is a bad idea, because it might not be actually aligned enough for that pointer type (and thus cause a crash on dereference on some host architectures). Newer versions of clang warn about this. Avoid the bug by not using the "modify in place" byte swapping functions. There are a few places where the in-place swap function is used on something other than a packed struct field; we convert those anyway, for consistency. This patch was produced with the following spatch script (and hand-editing to fold a few resulting overlength lines): @@ expression E; @@ -be16_to_cpus(&E); +E = be16_to_cpu(E); @@ expression E; @@ -be32_to_cpus(&E); +E = be32_to_cpu(E); @@ expression E; @@ -be64_to_cpus(&E); +E = be64_to_cpu(E); @@ expression E; @@ -cpu_to_be16s(&E); +E = cpu_to_be16(E); @@ expression E; @@ -cpu_to_be32s(&E); +E = cpu_to_be32(E); @@ expression E; @@ -cpu_to_be64s(&E); +E = cpu_to_be64(E); Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: John Snow <jsnow@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/qcow2.c | 64 +++++++++++++++++++++++++++------------------------ 1 file changed, 34 insertions(+), 30 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index XXXXXXX..XXXXXXX 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -XXX,XX +XXX,XX @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, "pread fail from offset %" PRIu64, offset); return 1; } - be32_to_cpus(&ext.magic); - be32_to_cpus(&ext.len); + ext.magic = be32_to_cpu(ext.magic); + ext.len = be32_to_cpu(ext.len); offset += sizeof(ext); #ifdef DEBUG_EXT printf("ext.magic = 0x%x\n", ext.magic); @@ -XXX,XX +XXX,XX @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, "Unable to read CRYPTO header extension"); return ret; } - be64_to_cpus(&s->crypto_header.offset); - be64_to_cpus(&s->crypto_header.length); + s->crypto_header.offset = be64_to_cpu(s->crypto_header.offset); + s->crypto_header.length = be64_to_cpu(s->crypto_header.length); if ((s->crypto_header.offset % s->cluster_size) != 0) { error_setg(errp, "Encryption header offset '%" PRIu64 "' is " @@ -XXX,XX +XXX,XX @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, return -EINVAL; } - be32_to_cpus(&bitmaps_ext.nb_bitmaps); - be64_to_cpus(&bitmaps_ext.bitmap_directory_size); - be64_to_cpus(&bitmaps_ext.bitmap_directory_offset); + bitmaps_ext.nb_bitmaps = be32_to_cpu(bitmaps_ext.nb_bitmaps); + bitmaps_ext.bitmap_directory_size = + be64_to_cpu(bitmaps_ext.bitmap_directory_size); + bitmaps_ext.bitmap_directory_offset = + be64_to_cpu(bitmaps_ext.bitmap_directory_offset); if (bitmaps_ext.nb_bitmaps > QCOW2_MAX_BITMAPS) { error_setg(errp, @@ -XXX,XX +XXX,XX @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, error_setg_errno(errp, -ret, "Could not read qcow2 header"); goto fail; } - be32_to_cpus(&header.magic); - be32_to_cpus(&header.version); - be64_to_cpus(&header.backing_file_offset); - be32_to_cpus(&header.backing_file_size); - be64_to_cpus(&header.size); - be32_to_cpus(&header.cluster_bits); - be32_to_cpus(&header.crypt_method); - be64_to_cpus(&header.l1_table_offset); - be32_to_cpus(&header.l1_size); - be64_to_cpus(&header.refcount_table_offset); - be32_to_cpus(&header.refcount_table_clusters); - be64_to_cpus(&header.snapshots_offset); - be32_to_cpus(&header.nb_snapshots); + header.magic = be32_to_cpu(header.magic); + header.version = be32_to_cpu(header.version); + header.backing_file_offset = be64_to_cpu(header.backing_file_offset); + header.backing_file_size = be32_to_cpu(header.backing_file_size); + header.size = be64_to_cpu(header.size); + header.cluster_bits = be32_to_cpu(header.cluster_bits); + header.crypt_method = be32_to_cpu(header.crypt_method); + header.l1_table_offset = be64_to_cpu(header.l1_table_offset); + header.l1_size = be32_to_cpu(header.l1_size); + header.refcount_table_offset = be64_to_cpu(header.refcount_table_offset); + header.refcount_table_clusters = + be32_to_cpu(header.refcount_table_clusters); + header.snapshots_offset = be64_to_cpu(header.snapshots_offset); + header.nb_snapshots = be32_to_cpu(header.nb_snapshots); if (header.magic != QCOW_MAGIC) { error_setg(errp, "Image is not in qcow2 format"); @@ -XXX,XX +XXX,XX @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, header.refcount_order = 4; header.header_length = 72; } else { - be64_to_cpus(&header.incompatible_features); - be64_to_cpus(&header.compatible_features); - be64_to_cpus(&header.autoclear_features); - be32_to_cpus(&header.refcount_order); - be32_to_cpus(&header.header_length); + header.incompatible_features = + be64_to_cpu(header.incompatible_features); + header.compatible_features = be64_to_cpu(header.compatible_features); + header.autoclear_features = be64_to_cpu(header.autoclear_features); + header.refcount_order = be32_to_cpu(header.refcount_order); + header.header_length = be32_to_cpu(header.header_length); if (header.header_length < 104) { error_setg(errp, "qcow2 header too short"); @@ -XXX,XX +XXX,XX @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, goto fail; } for(i = 0;i < s->l1_size; i++) { - be64_to_cpus(&s->l1_table[i]); + s->l1_table[i] = be64_to_cpu(s->l1_table[i]); } } @@ -XXX,XX +XXX,XX @@ int qcow2_update_header(BlockDriverState *bs) /* Full disk encryption header pointer extension */ if (s->crypto_header.offset != 0) { - cpu_to_be64s(&s->crypto_header.offset); - cpu_to_be64s(&s->crypto_header.length); + s->crypto_header.offset = cpu_to_be64(s->crypto_header.offset); + s->crypto_header.length = cpu_to_be64(s->crypto_header.length); ret = header_ext_add(buf, QCOW2_EXT_MAGIC_CRYPTO_HEADER, &s->crypto_header, sizeof(s->crypto_header), buflen); - be64_to_cpus(&s->crypto_header.offset); - be64_to_cpus(&s->crypto_header.length); + s->crypto_header.offset = be64_to_cpu(s->crypto_header.offset); + s->crypto_header.length = be64_to_cpu(s->crypto_header.length); if (ret < 0) { goto fail; } -- 2.19.1 From: Peter Maydell <peter.maydell@linaro.org> Taking the address of a field in a packed struct is a bad idea, because it might not be actually aligned enough for that pointer type (and thus cause a crash on dereference on some host architectures). Newer versions of clang warn about this. Avoid the bug by not using the "modify in place" byte swapping functions. There are a few places where the in-place swap function is used on something other than a packed struct field; we convert those anyway, for consistency. This patch was produced with the following spatch script: @@ expression E; @@ -be16_to_cpus(&E); +E = be16_to_cpu(E); @@ expression E; @@ -be32_to_cpus(&E); +E = be32_to_cpu(E); @@ expression E; @@ -be64_to_cpus(&E); +E = be64_to_cpu(E); @@ expression E; @@ -cpu_to_be16s(&E); +E = cpu_to_be16(E); @@ expression E; @@ -cpu_to_be32s(&E); +E = cpu_to_be32(E); @@ expression E; @@ -cpu_to_be64s(&E); +E = cpu_to_be64(E); Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: John Snow <jsnow@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/qcow.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/block/qcow.c b/block/qcow.c index XXXXXXX..XXXXXXX 100644 --- a/block/qcow.c +++ b/block/qcow.c @@ -XXX,XX +XXX,XX @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags, if (ret < 0) { goto fail; } - be32_to_cpus(&header.magic); - be32_to_cpus(&header.version); - be64_to_cpus(&header.backing_file_offset); - be32_to_cpus(&header.backing_file_size); - be32_to_cpus(&header.mtime); - be64_to_cpus(&header.size); - be32_to_cpus(&header.crypt_method); - be64_to_cpus(&header.l1_table_offset); + header.magic = be32_to_cpu(header.magic); + header.version = be32_to_cpu(header.version); + header.backing_file_offset = be64_to_cpu(header.backing_file_offset); + header.backing_file_size = be32_to_cpu(header.backing_file_size); + header.mtime = be32_to_cpu(header.mtime); + header.size = be64_to_cpu(header.size); + header.crypt_method = be32_to_cpu(header.crypt_method); + header.l1_table_offset = be64_to_cpu(header.l1_table_offset); if (header.magic != QCOW_MAGIC) { error_setg(errp, "Image not in qcow format"); @@ -XXX,XX +XXX,XX @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags, } for(i = 0;i < s->l1_size; i++) { - be64_to_cpus(&s->l1_table[i]); + s->l1_table[i] = be64_to_cpu(s->l1_table[i]); } /* alloc L2 cache (max. 64k * 16 * 8 = 8 MB) */ -- 2.19.1 From: Peter Maydell <peter.maydell@linaro.org> Taking the address of a field in a packed struct is a bad idea, because it might not be actually aligned enough for that pointer type (and thus cause a crash on dereference on some host architectures). Newer versions of clang warn about this. Avoid the bug by not using the "modify in place" byte swapping functions. There are a few places where the in-place swap function is used on something other than a packed struct field; we convert those anyway, for consistency. This patch was produced with the following spatch script: @@ expression E; @@ -be16_to_cpus(&E); +E = be16_to_cpu(E); @@ expression E; @@ -be32_to_cpus(&E); +E = be32_to_cpu(E); @@ expression E; @@ -be64_to_cpus(&E); +E = be64_to_cpu(E); @@ expression E; @@ -cpu_to_be16s(&E); +E = cpu_to_be16(E); @@ expression E; @@ -cpu_to_be32s(&E); +E = cpu_to_be32(E); @@ expression E; @@ -cpu_to_be64s(&E); +E = cpu_to_be64(E); Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: John Snow <jsnow@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/qcow2-bitmap.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index XXXXXXX..XXXXXXX 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -XXX,XX +XXX,XX @@ static inline void bitmap_table_to_be(uint64_t *bitmap_table, size_t size) size_t i; for (i = 0; i < size; ++i) { - cpu_to_be64s(&bitmap_table[i]); + bitmap_table[i] = cpu_to_be64(bitmap_table[i]); } } @@ -XXX,XX +XXX,XX @@ static int bitmap_table_load(BlockDriverState *bs, Qcow2BitmapTable *tb, } for (i = 0; i < tb->size; ++i) { - be64_to_cpus(&table[i]); + table[i] = be64_to_cpu(table[i]); ret = check_table_entry(table[i], s->cluster_size); if (ret < 0) { goto fail; @@ -XXX,XX +XXX,XX @@ fail: static inline void bitmap_dir_entry_to_cpu(Qcow2BitmapDirEntry *entry) { - be64_to_cpus(&entry->bitmap_table_offset); - be32_to_cpus(&entry->bitmap_table_size); - be32_to_cpus(&entry->flags); - be16_to_cpus(&entry->name_size); - be32_to_cpus(&entry->extra_data_size); + entry->bitmap_table_offset = be64_to_cpu(entry->bitmap_table_offset); + entry->bitmap_table_size = be32_to_cpu(entry->bitmap_table_size); + entry->flags = be32_to_cpu(entry->flags); + entry->name_size = be16_to_cpu(entry->name_size); + entry->extra_data_size = be32_to_cpu(entry->extra_data_size); } static inline void bitmap_dir_entry_to_be(Qcow2BitmapDirEntry *entry) { - cpu_to_be64s(&entry->bitmap_table_offset); - cpu_to_be32s(&entry->bitmap_table_size); - cpu_to_be32s(&entry->flags); - cpu_to_be16s(&entry->name_size); - cpu_to_be32s(&entry->extra_data_size); + entry->bitmap_table_offset = cpu_to_be64(entry->bitmap_table_offset); + entry->bitmap_table_size = cpu_to_be32(entry->bitmap_table_size); + entry->flags = cpu_to_be32(entry->flags); + entry->name_size = cpu_to_be16(entry->name_size); + entry->extra_data_size = cpu_to_be32(entry->extra_data_size); } static inline int calc_dir_entry_size(size_t name_size, size_t extra_data_size) -- 2.19.1 From: Daniel P. Berrangé <berrange@redhat.com> The qcow2 block driver expects to see a valid sector size even when it has opened the crypto layer with QCRYPTO_BLOCK_OPEN_NO_IO. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- crypto/block-qcow.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/crypto/block-qcow.c b/crypto/block-qcow.c index XXXXXXX..XXXXXXX 100644 --- a/crypto/block-qcow.c +++ b/crypto/block-qcow.c @@ -XXX,XX +XXX,XX @@ qcrypto_block_qcow_open(QCryptoBlock *block, Error **errp) { if (flags & QCRYPTO_BLOCK_OPEN_NO_IO) { + block->sector_size = QCRYPTO_BLOCK_QCOW_SECTOR_SIZE; + block->payload_offset = 0; return 0; } else { if (!options->u.qcow.key_secret) { -- 2.19.1 From: Alberto Garcia <berto@igalia.com> This doesn't have any practical effect at the moment because the values of BDRV_SECTOR_SIZE, QCRYPTO_BLOCK_LUKS_SECTOR_SIZE and QCRYPTO_BLOCK_QCOW_SECTOR_SIZE are all the same (512 bytes), but future encryption methods could have different requirements. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/qcow2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/qcow2.c b/block/qcow2.c index XXXXXXX..XXXXXXX 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -XXX,XX +XXX,XX @@ static void qcow2_refresh_limits(BlockDriverState *bs, Error **errp) if (bs->encrypted) { /* Encryption works on a sector granularity */ - bs->bl.request_alignment = BDRV_SECTOR_SIZE; + bs->bl.request_alignment = qcrypto_block_get_sector_size(s->crypto); } bs->bl.pwrite_zeroes_alignment = s->cluster_size; bs->bl.pdiscard_alignment = s->cluster_size; -- 2.19.1 From: Li Qiang <liq3ea@163.com> Signed-off-by: Li Qiang <liq3ea@163.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- include/sysemu/block-backend.h | 6 +++--- block/block-backend.c | 8 ++++---- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index XXXXXXX..XXXXXXX 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -XXX,XX +XXX,XX @@ BlockErrorAction blk_get_error_action(BlockBackend *blk, bool is_read, int error); void blk_error_action(BlockBackend *blk, BlockErrorAction action, bool is_read, int error); -int blk_is_read_only(BlockBackend *blk); -int blk_is_sg(BlockBackend *blk); -int blk_enable_write_cache(BlockBackend *blk); +bool blk_is_read_only(BlockBackend *blk); +bool blk_is_sg(BlockBackend *blk); +bool blk_enable_write_cache(BlockBackend *blk); void blk_set_enable_write_cache(BlockBackend *blk, bool wce); void blk_invalidate_cache(BlockBackend *blk, Error **errp); bool blk_is_inserted(BlockBackend *blk); diff --git a/block/block-backend.c b/block/block-backend.c index XXXXXXX..XXXXXXX 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -XXX,XX +XXX,XX @@ void blk_error_action(BlockBackend *blk, BlockErrorAction action, } } -int blk_is_read_only(BlockBackend *blk) +bool blk_is_read_only(BlockBackend *blk) { BlockDriverState *bs = blk_bs(blk); @@ -XXX,XX +XXX,XX @@ int blk_is_read_only(BlockBackend *blk) } } -int blk_is_sg(BlockBackend *blk) +bool blk_is_sg(BlockBackend *blk) { BlockDriverState *bs = blk_bs(blk); if (!bs) { - return 0; + return false; } return bdrv_is_sg(bs); } -int blk_enable_write_cache(BlockBackend *blk) +bool blk_enable_write_cache(BlockBackend *blk) { return blk->enable_write_cache; } -- 2.19.1 From: Cleber Rosa <crosa@redhat.com> While testing the Python 3 changes which touch the 083 test, I noticed that it would fail with qcow2. Expanding the testing, I noticed it had nothing to do with the Python 3 changes, and in fact, it would not pass on anything but raw: raw: pass bochs: not generic cloop: not generic parallels: fail qcow: fail qcow2: fail qed: fail vdi: fail vhdx: fail vmdk: fail vpc: fail luks: fail The errors are a mixture I/O and "image not in xxx format", such as: === Check disconnect before data === Unexpected end-of-file before all bytes were read -read failed: Input/output error +can't open device nbd+tcp://127.0.0.1:PORT/foo: Could not open 'nbd://127.0.0.1:PORT/foo': Input/output error === Check disconnect after data === -read 512/512 bytes at offset 0 -512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +can't open device nbd+tcp://127.0.0.1:PORT/foo: Image not in qcow format I'm not aware if there's a quick fix, so, for the time being, it looks like the honest approach is to make the test known to work on raw only. Signed-off-by: Cleber Rosa <crosa@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/083 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/qemu-iotests/083 b/tests/qemu-iotests/083 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/083 +++ b/tests/qemu-iotests/083 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.rc . ./common.filter -_supported_fmt generic +_supported_fmt raw _supported_proto nbd _supported_os Linux -- 2.19.1 Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> --- block/vpc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block/vpc.c b/block/vpc.c index XXXXXXX..XXXXXXX 100644 --- a/block/vpc.c +++ b/block/vpc.c @@ -XXX,XX +XXX,XX @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags, } qemu_co_mutex_init(&s->lock); + qemu_opts_del(opts); return 0; fail: + qemu_opts_del(opts); qemu_vfree(s->pagetable); #ifdef CACHE g_free(s->pageentry_u8); -- 2.19.1 From: Peter Maydell <peter.maydell@linaro.org> Taking the address of a field in a packed struct is a bad idea, because it might not be actually aligned enough for that pointer type (and thus cause a crash on dereference on some host architectures). Newer versions of clang warn about this. Avoid the bug by not using the "modify in place" byte swapping functions. There are a few places where the in-place swap function is used on something other than a packed struct field; we convert those anyway, for consistency. Patch produced with scripts/coccinelle/inplace-byteswaps.cocci. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/vhdx.h | 12 ++--- block/vhdx-endian.c | 118 ++++++++++++++++++++++---------------------- block/vhdx-log.c | 4 +- block/vhdx.c | 18 +++---- 4 files changed, 76 insertions(+), 76 deletions(-) diff --git a/block/vhdx.h b/block/vhdx.h index XXXXXXX..XXXXXXX 100644 --- a/block/vhdx.h +++ b/block/vhdx.h @@ -XXX,XX +XXX,XX @@ int vhdx_log_write_and_flush(BlockDriverState *bs, BDRVVHDXState *s, static inline void leguid_to_cpus(MSGUID *guid) { - le32_to_cpus(&guid->data1); - le16_to_cpus(&guid->data2); - le16_to_cpus(&guid->data3); + guid->data1 = le32_to_cpu(guid->data1); + guid->data2 = le16_to_cpu(guid->data2); + guid->data3 = le16_to_cpu(guid->data3); } static inline void cpu_to_leguids(MSGUID *guid) { - cpu_to_le32s(&guid->data1); - cpu_to_le16s(&guid->data2); - cpu_to_le16s(&guid->data3); + guid->data1 = cpu_to_le32(guid->data1); + guid->data2 = cpu_to_le16(guid->data2); + guid->data3 = cpu_to_le16(guid->data3); } void vhdx_header_le_import(VHDXHeader *h); diff --git a/block/vhdx-endian.c b/block/vhdx-endian.c index XXXXXXX..XXXXXXX 100644 --- a/block/vhdx-endian.c +++ b/block/vhdx-endian.c @@ -XXX,XX +XXX,XX @@ void vhdx_header_le_import(VHDXHeader *h) { assert(h != NULL); - le32_to_cpus(&h->signature); - le32_to_cpus(&h->checksum); - le64_to_cpus(&h->sequence_number); + h->signature = le32_to_cpu(h->signature); + h->checksum = le32_to_cpu(h->checksum); + h->sequence_number = le64_to_cpu(h->sequence_number); leguid_to_cpus(&h->file_write_guid); leguid_to_cpus(&h->data_write_guid); leguid_to_cpus(&h->log_guid); - le16_to_cpus(&h->log_version); - le16_to_cpus(&h->version); - le32_to_cpus(&h->log_length); - le64_to_cpus(&h->log_offset); + h->log_version = le16_to_cpu(h->log_version); + h->version = le16_to_cpu(h->version); + h->log_length = le32_to_cpu(h->log_length); + h->log_offset = le64_to_cpu(h->log_offset); } void vhdx_header_le_export(VHDXHeader *orig_h, VHDXHeader *new_h) @@ -XXX,XX +XXX,XX @@ void vhdx_log_desc_le_import(VHDXLogDescriptor *d) { assert(d != NULL); - le32_to_cpus(&d->signature); - le64_to_cpus(&d->file_offset); - le64_to_cpus(&d->sequence_number); + d->signature = le32_to_cpu(d->signature); + d->file_offset = le64_to_cpu(d->file_offset); + d->sequence_number = le64_to_cpu(d->sequence_number); } void vhdx_log_desc_le_export(VHDXLogDescriptor *d) { assert(d != NULL); - cpu_to_le32s(&d->signature); - cpu_to_le32s(&d->trailing_bytes); - cpu_to_le64s(&d->leading_bytes); - cpu_to_le64s(&d->file_offset); - cpu_to_le64s(&d->sequence_number); + d->signature = cpu_to_le32(d->signature); + d->trailing_bytes = cpu_to_le32(d->trailing_bytes); + d->leading_bytes = cpu_to_le64(d->leading_bytes); + d->file_offset = cpu_to_le64(d->file_offset); + d->sequence_number = cpu_to_le64(d->sequence_number); } void vhdx_log_data_le_import(VHDXLogDataSector *d) { assert(d != NULL); - le32_to_cpus(&d->data_signature); - le32_to_cpus(&d->sequence_high); - le32_to_cpus(&d->sequence_low); + d->data_signature = le32_to_cpu(d->data_signature); + d->sequence_high = le32_to_cpu(d->sequence_high); + d->sequence_low = le32_to_cpu(d->sequence_low); } void vhdx_log_data_le_export(VHDXLogDataSector *d) { assert(d != NULL); - cpu_to_le32s(&d->data_signature); - cpu_to_le32s(&d->sequence_high); - cpu_to_le32s(&d->sequence_low); + d->data_signature = cpu_to_le32(d->data_signature); + d->sequence_high = cpu_to_le32(d->sequence_high); + d->sequence_low = cpu_to_le32(d->sequence_low); } void vhdx_log_entry_hdr_le_import(VHDXLogEntryHeader *hdr) { assert(hdr != NULL); - le32_to_cpus(&hdr->signature); - le32_to_cpus(&hdr->checksum); - le32_to_cpus(&hdr->entry_length); - le32_to_cpus(&hdr->tail); - le64_to_cpus(&hdr->sequence_number); - le32_to_cpus(&hdr->descriptor_count); + hdr->signature = le32_to_cpu(hdr->signature); + hdr->checksum = le32_to_cpu(hdr->checksum); + hdr->entry_length = le32_to_cpu(hdr->entry_length); + hdr->tail = le32_to_cpu(hdr->tail); + hdr->sequence_number = le64_to_cpu(hdr->sequence_number); + hdr->descriptor_count = le32_to_cpu(hdr->descriptor_count); leguid_to_cpus(&hdr->log_guid); - le64_to_cpus(&hdr->flushed_file_offset); - le64_to_cpus(&hdr->last_file_offset); + hdr->flushed_file_offset = le64_to_cpu(hdr->flushed_file_offset); + hdr->last_file_offset = le64_to_cpu(hdr->last_file_offset); } void vhdx_log_entry_hdr_le_export(VHDXLogEntryHeader *hdr) { assert(hdr != NULL); - cpu_to_le32s(&hdr->signature); - cpu_to_le32s(&hdr->checksum); - cpu_to_le32s(&hdr->entry_length); - cpu_to_le32s(&hdr->tail); - cpu_to_le64s(&hdr->sequence_number); - cpu_to_le32s(&hdr->descriptor_count); + hdr->signature = cpu_to_le32(hdr->signature); + hdr->checksum = cpu_to_le32(hdr->checksum); + hdr->entry_length = cpu_to_le32(hdr->entry_length); + hdr->tail = cpu_to_le32(hdr->tail); + hdr->sequence_number = cpu_to_le64(hdr->sequence_number); + hdr->descriptor_count = cpu_to_le32(hdr->descriptor_count); cpu_to_leguids(&hdr->log_guid); - cpu_to_le64s(&hdr->flushed_file_offset); - cpu_to_le64s(&hdr->last_file_offset); + hdr->flushed_file_offset = cpu_to_le64(hdr->flushed_file_offset); + hdr->last_file_offset = cpu_to_le64(hdr->last_file_offset); } @@ -XXX,XX +XXX,XX @@ void vhdx_region_header_le_import(VHDXRegionTableHeader *hdr) { assert(hdr != NULL); - le32_to_cpus(&hdr->signature); - le32_to_cpus(&hdr->checksum); - le32_to_cpus(&hdr->entry_count); + hdr->signature = le32_to_cpu(hdr->signature); + hdr->checksum = le32_to_cpu(hdr->checksum); + hdr->entry_count = le32_to_cpu(hdr->entry_count); } void vhdx_region_header_le_export(VHDXRegionTableHeader *hdr) { assert(hdr != NULL); - cpu_to_le32s(&hdr->signature); - cpu_to_le32s(&hdr->checksum); - cpu_to_le32s(&hdr->entry_count); + hdr->signature = cpu_to_le32(hdr->signature); + hdr->checksum = cpu_to_le32(hdr->checksum); + hdr->entry_count = cpu_to_le32(hdr->entry_count); } void vhdx_region_entry_le_import(VHDXRegionTableEntry *e) @@ -XXX,XX +XXX,XX @@ void vhdx_region_entry_le_import(VHDXRegionTableEntry *e) assert(e != NULL); leguid_to_cpus(&e->guid); - le64_to_cpus(&e->file_offset); - le32_to_cpus(&e->length); - le32_to_cpus(&e->data_bits); + e->file_offset = le64_to_cpu(e->file_offset); + e->length = le32_to_cpu(e->length); + e->data_bits = le32_to_cpu(e->data_bits); } void vhdx_region_entry_le_export(VHDXRegionTableEntry *e) @@ -XXX,XX +XXX,XX @@ void vhdx_region_entry_le_export(VHDXRegionTableEntry *e) assert(e != NULL); cpu_to_leguids(&e->guid); - cpu_to_le64s(&e->file_offset); - cpu_to_le32s(&e->length); - cpu_to_le32s(&e->data_bits); + e->file_offset = cpu_to_le64(e->file_offset); + e->length = cpu_to_le32(e->length); + e->data_bits = cpu_to_le32(e->data_bits); } @@ -XXX,XX +XXX,XX @@ void vhdx_metadata_header_le_import(VHDXMetadataTableHeader *hdr) { assert(hdr != NULL); - le64_to_cpus(&hdr->signature); - le16_to_cpus(&hdr->entry_count); + hdr->signature = le64_to_cpu(hdr->signature); + hdr->entry_count = le16_to_cpu(hdr->entry_count); } void vhdx_metadata_header_le_export(VHDXMetadataTableHeader *hdr) { assert(hdr != NULL); - cpu_to_le64s(&hdr->signature); - cpu_to_le16s(&hdr->entry_count); + hdr->signature = cpu_to_le64(hdr->signature); + hdr->entry_count = cpu_to_le16(hdr->entry_count); } void vhdx_metadata_entry_le_import(VHDXMetadataTableEntry *e) @@ -XXX,XX +XXX,XX @@ void vhdx_metadata_entry_le_import(VHDXMetadataTableEntry *e) assert(e != NULL); leguid_to_cpus(&e->item_id); - le32_to_cpus(&e->offset); - le32_to_cpus(&e->length); - le32_to_cpus(&e->data_bits); + e->offset = le32_to_cpu(e->offset); + e->length = le32_to_cpu(e->length); + e->data_bits = le32_to_cpu(e->data_bits); } void vhdx_metadata_entry_le_export(VHDXMetadataTableEntry *e) { assert(e != NULL); cpu_to_leguids(&e->item_id); - cpu_to_le32s(&e->offset); - cpu_to_le32s(&e->length); - cpu_to_le32s(&e->data_bits); + e->offset = cpu_to_le32(e->offset); + e->length = cpu_to_le32(e->length); + e->data_bits = cpu_to_le32(e->data_bits); } diff --git a/block/vhdx-log.c b/block/vhdx-log.c index XXXXXXX..XXXXXXX 100644 --- a/block/vhdx-log.c +++ b/block/vhdx-log.c @@ -XXX,XX +XXX,XX @@ static void vhdx_log_raw_to_le_sector(VHDXLogDescriptor *desc, /* 8 + 4084 + 4 = 4096, 1 log sector */ memcpy(&desc->leading_bytes, data, 8); data += 8; - cpu_to_le64s(&desc->leading_bytes); + desc->leading_bytes = cpu_to_le64(desc->leading_bytes); memcpy(sector->data, data, 4084); data += 4084; memcpy(&desc->trailing_bytes, data, 4); - cpu_to_le32s(&desc->trailing_bytes); + desc->trailing_bytes = cpu_to_le32(desc->trailing_bytes); data += 4; sector->sequence_high = (uint32_t) (seq >> 32); diff --git a/block/vhdx.c b/block/vhdx.c index XXXXXXX..XXXXXXX 100644 --- a/block/vhdx.c +++ b/block/vhdx.c @@ -XXX,XX +XXX,XX @@ uint32_t vhdx_update_checksum(uint8_t *buf, size_t size, int crc_offset) memset(buf + crc_offset, 0, sizeof(crc)); crc = crc32c(0xffffffff, buf, size); - cpu_to_le32s(&crc); + crc = cpu_to_le32(crc); memcpy(buf + crc_offset, &crc, sizeof(crc)); return crc; @@ -XXX,XX +XXX,XX @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s) goto exit; } - le32_to_cpus(&s->params.block_size); - le32_to_cpus(&s->params.data_bits); + s->params.block_size = le32_to_cpu(s->params.block_size); + s->params.data_bits = le32_to_cpu(s->params.data_bits); /* We now have the file parameters, so we can tell if this is a @@ -XXX,XX +XXX,XX @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s) goto exit; } - le64_to_cpus(&s->virtual_disk_size); - le32_to_cpus(&s->logical_sector_size); - le32_to_cpus(&s->physical_sector_size); + s->virtual_disk_size = le64_to_cpu(s->virtual_disk_size); + s->logical_sector_size = le32_to_cpu(s->logical_sector_size); + s->physical_sector_size = le32_to_cpu(s->physical_sector_size); if (s->params.block_size < VHDX_BLOCK_SIZE_MIN || s->params.block_size > VHDX_BLOCK_SIZE_MAX) { @@ -XXX,XX +XXX,XX @@ static int vhdx_open(BlockDriverState *bs, QDict *options, int flags, /* endian convert, and verify populated BAT field file offsets against * region table and log entries */ for (i = 0; i < s->bat_entries; i++) { - le64_to_cpus(&s->bat[i]); + s->bat[i] = le64_to_cpu(s->bat[i]); if (payblocks--) { /* payload bat entries */ if ((s->bat[i] & VHDX_BAT_STATE_BIT_MASK) == @@ -XXX,XX +XXX,XX @@ static int vhdx_create_new_metadata(BlockBackend *blk, mt_file_params->block_size = cpu_to_le32(block_size); if (type == VHDX_TYPE_FIXED) { mt_file_params->data_bits |= VHDX_PARAMS_LEAVE_BLOCKS_ALLOCED; - cpu_to_le32s(&mt_file_params->data_bits); + mt_file_params->data_bits = cpu_to_le32(mt_file_params->data_bits); } vhdx_guid_generate(&mt_page83->page_83_data); @@ -XXX,XX +XXX,XX @@ static int vhdx_create_bat(BlockBackend *blk, BDRVVHDXState *s, sinfo.file_offset = ROUND_UP(sinfo.file_offset, MiB); vhdx_update_bat_table_entry(blk_bs(blk), s, &sinfo, &unused, &unused, block_state); - cpu_to_le64s(&s->bat[sinfo.bat_idx]); + s->bat[sinfo.bat_idx] = cpu_to_le64(s->bat[sinfo.bat_idx]); sector_num += s->sectors_per_block; } ret = blk_pwrite(blk, file_offset, s->bat, length, 0); -- 2.19.1 From: Peter Maydell <peter.maydell@linaro.org> Taking the address of a field in a packed struct is a bad idea, because it might not be actually aligned enough for that pointer type (and thus cause a crash on dereference on some host architectures). Newer versions of clang warn about this. Avoid the bug by not using the "modify in place" byte swapping functions. There are a few places where the in-place swap function is used on something other than a packed struct field; we convert those anyway, for consistency. Patch produced with scripts/coccinelle/inplace-byteswaps.cocci. There are other places where we take the address of a packed member in this file for other purposes than passing it to a byteswap function (all the calls to qemu_uuid_*()); we leave those for now. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/vdi.c | 64 ++++++++++++++++++++++++++--------------------------- 1 file changed, 32 insertions(+), 32 deletions(-) diff --git a/block/vdi.c b/block/vdi.c index XXXXXXX..XXXXXXX 100644 --- a/block/vdi.c +++ b/block/vdi.c @@ -XXX,XX +XXX,XX @@ typedef struct { static void vdi_header_to_cpu(VdiHeader *header) { - le32_to_cpus(&header->signature); - le32_to_cpus(&header->version); - le32_to_cpus(&header->header_size); - le32_to_cpus(&header->image_type); - le32_to_cpus(&header->image_flags); - le32_to_cpus(&header->offset_bmap); - le32_to_cpus(&header->offset_data); - le32_to_cpus(&header->cylinders); - le32_to_cpus(&header->heads); - le32_to_cpus(&header->sectors); - le32_to_cpus(&header->sector_size); - le64_to_cpus(&header->disk_size); - le32_to_cpus(&header->block_size); - le32_to_cpus(&header->block_extra); - le32_to_cpus(&header->blocks_in_image); - le32_to_cpus(&header->blocks_allocated); + header->signature = le32_to_cpu(header->signature); + header->version = le32_to_cpu(header->version); + header->header_size = le32_to_cpu(header->header_size); + header->image_type = le32_to_cpu(header->image_type); + header->image_flags = le32_to_cpu(header->image_flags); + header->offset_bmap = le32_to_cpu(header->offset_bmap); + header->offset_data = le32_to_cpu(header->offset_data); + header->cylinders = le32_to_cpu(header->cylinders); + header->heads = le32_to_cpu(header->heads); + header->sectors = le32_to_cpu(header->sectors); + header->sector_size = le32_to_cpu(header->sector_size); + header->disk_size = le64_to_cpu(header->disk_size); + header->block_size = le32_to_cpu(header->block_size); + header->block_extra = le32_to_cpu(header->block_extra); + header->blocks_in_image = le32_to_cpu(header->blocks_in_image); + header->blocks_allocated = le32_to_cpu(header->blocks_allocated); qemu_uuid_bswap(&header->uuid_image); qemu_uuid_bswap(&header->uuid_last_snap); qemu_uuid_bswap(&header->uuid_link); @@ -XXX,XX +XXX,XX @@ static void vdi_header_to_cpu(VdiHeader *header) static void vdi_header_to_le(VdiHeader *header) { - cpu_to_le32s(&header->signature); - cpu_to_le32s(&header->version); - cpu_to_le32s(&header->header_size); - cpu_to_le32s(&header->image_type); - cpu_to_le32s(&header->image_flags); - cpu_to_le32s(&header->offset_bmap); - cpu_to_le32s(&header->offset_data); - cpu_to_le32s(&header->cylinders); - cpu_to_le32s(&header->heads); - cpu_to_le32s(&header->sectors); - cpu_to_le32s(&header->sector_size); - cpu_to_le64s(&header->disk_size); - cpu_to_le32s(&header->block_size); - cpu_to_le32s(&header->block_extra); - cpu_to_le32s(&header->blocks_in_image); - cpu_to_le32s(&header->blocks_allocated); + header->signature = cpu_to_le32(header->signature); + header->version = cpu_to_le32(header->version); + header->header_size = cpu_to_le32(header->header_size); + header->image_type = cpu_to_le32(header->image_type); + header->image_flags = cpu_to_le32(header->image_flags); + header->offset_bmap = cpu_to_le32(header->offset_bmap); + header->offset_data = cpu_to_le32(header->offset_data); + header->cylinders = cpu_to_le32(header->cylinders); + header->heads = cpu_to_le32(header->heads); + header->sectors = cpu_to_le32(header->sectors); + header->sector_size = cpu_to_le32(header->sector_size); + header->disk_size = cpu_to_le64(header->disk_size); + header->block_size = cpu_to_le32(header->block_size); + header->block_extra = cpu_to_le32(header->block_extra); + header->blocks_in_image = cpu_to_le32(header->blocks_in_image); + header->blocks_allocated = cpu_to_le32(header->blocks_allocated); qemu_uuid_bswap(&header->uuid_image); qemu_uuid_bswap(&header->uuid_last_snap); qemu_uuid_bswap(&header->uuid_link); -- 2.19.1 From: Alberto Garcia <berto@igalia.com> This is a static function with only one caller, so there's no need to keep it. Inlining the code in quorum_compare() makes it much simpler. Signed-off-by: Alberto Garcia <berto@igalia.com> Reported-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/quorum.c | 24 +++++------------------- 1 file changed, 5 insertions(+), 19 deletions(-) diff --git a/block/quorum.c b/block/quorum.c index XXXXXXX..XXXXXXX 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -XXX,XX +XXX,XX @@ static bool quorum_iovec_compare(QEMUIOVector *a, QEMUIOVector *b) return true; } -static void GCC_FMT_ATTR(2, 3) quorum_err(QuorumAIOCB *acb, - const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - fprintf(stderr, "quorum: offset=%" PRIu64 " bytes=%" PRIu64 " ", - acb->offset, acb->bytes); - vfprintf(stderr, fmt, ap); - fprintf(stderr, "\n"); - va_end(ap); - exit(1); -} - -static bool quorum_compare(QuorumAIOCB *acb, - QEMUIOVector *a, - QEMUIOVector *b) +static bool quorum_compare(QuorumAIOCB *acb, QEMUIOVector *a, QEMUIOVector *b) { BDRVQuorumState *s = acb->bs->opaque; ssize_t offset; @@ -XXX,XX +XXX,XX @@ static bool quorum_compare(QuorumAIOCB *acb, if (s->is_blkverify) { offset = qemu_iovec_compare(a, b); if (offset != -1) { - quorum_err(acb, "contents mismatch at offset %" PRIu64, - acb->offset + offset); + fprintf(stderr, "quorum: offset=%" PRIu64 " bytes=%" PRIu64 + " contents mismatch at offset %" PRIu64 "\n", + acb->offset, acb->bytes, acb->offset + offset); + exit(1); } return true; } -- 2.19.1 From: Alberto Garcia <berto@igalia.com> The blkverify mode of Quorum can only be enabled if the number of children is exactly two and the value of vote-threshold is also two. If the user tries to enable it but the other settings are incorrect then QEMU simply prints an error message to stderr and carries on disabling the blkverify setting. This patch makes quorum_open() fail and return an error in this case. Signed-off-by: Alberto Garcia <berto@igalia.com> Reported-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/quorum.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/block/quorum.c b/block/quorum.c index XXXXXXX..XXXXXXX 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -XXX,XX +XXX,XX @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags, s->read_pattern = ret; if (s->read_pattern == QUORUM_READ_PATTERN_QUORUM) { - /* is the driver in blkverify mode */ - if (qemu_opt_get_bool(opts, QUORUM_OPT_BLKVERIFY, false) && - s->num_children == 2 && s->threshold == 2) { - s->is_blkverify = true; - } else if (qemu_opt_get_bool(opts, QUORUM_OPT_BLKVERIFY, false)) { - fprintf(stderr, "blkverify mode is set by setting blkverify=on " - "and using two files with vote_threshold=2\n"); + s->is_blkverify = qemu_opt_get_bool(opts, QUORUM_OPT_BLKVERIFY, false); + if (s->is_blkverify && (s->num_children != 2 || s->threshold != 2)) { + error_setg(&local_err, "blkverify=on can only be set if there are " + "exactly two files and vote-threshold is 2"); + ret = -EINVAL; + goto exit; } s->rewrite_corrupted = qemu_opt_get_bool(opts, QUORUM_OPT_REWRITE, -- 2.19.1 From: Alberto Garcia <berto@igalia.com> Signed-off-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/081 | 30 ++++++++++++++++++++++++++++++ tests/qemu-iotests/081.out | 16 ++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/tests/qemu-iotests/081 b/tests/qemu-iotests/081 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/081 +++ b/tests/qemu-iotests/081 @@ -XXX,XX +XXX,XX @@ echo "== checking that quorum is broken ==" $QEMU_IO -c "open -o $quorum" -c "read -P 0x32 0 $size" | _filter_qemu_io +echo +echo "== checking the blkverify mode with broken content ==" + +quorum="driver=raw,file.driver=quorum,file.vote-threshold=2,file.blkverify=on" +quorum="$quorum,file.children.0.file.filename=$TEST_DIR/1.raw" +quorum="$quorum,file.children.1.file.filename=$TEST_DIR/2.raw" +quorum="$quorum,file.children.0.driver=raw" +quorum="$quorum,file.children.1.driver=raw" + +$QEMU_IO -c "open -o $quorum" -c "read -P 0x32 0 $size" | _filter_qemu_io + +echo +echo "== writing the same data to both files ==" + +$QEMU_IO -c "write -P 0x32 0 $size" "$TEST_DIR/1.raw" | _filter_qemu_io +$QEMU_IO -c "write -P 0x32 0 $size" "$TEST_DIR/2.raw" | _filter_qemu_io + +echo +echo "== checking the blkverify mode with valid content ==" + +$QEMU_IO -c "open -o $quorum" -c "read -P 0x32 0 $size" | _filter_qemu_io + +echo +echo "== checking the blkverify mode with invalid settings ==" + +quorum="$quorum,file.children.2.file.filename=$TEST_DIR/3.raw" +quorum="$quorum,file.children.2.driver=raw" + +$QEMU_IO -c "open -o $quorum" | _filter_qemu_io + # success, all done echo "*** done" rm -f $seq.full diff --git a/tests/qemu-iotests/081.out b/tests/qemu-iotests/081.out index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/081.out +++ b/tests/qemu-iotests/081.out @@ -XXX,XX +XXX,XX @@ wrote 10485760/10485760 bytes at offset 0 == checking that quorum is broken == read failed: Input/output error + +== checking the blkverify mode with broken content == +quorum: offset=0 bytes=10485760 contents mismatch at offset 0 + +== writing the same data to both files == +wrote 10485760/10485760 bytes at offset 0 +10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 10485760/10485760 bytes at offset 0 +10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== checking the blkverify mode with valid content == +read 10485760/10485760 bytes at offset 0 +10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== checking the blkverify mode with invalid settings == +can't open: blkverify=on can only be set if there are exactly two files and vote-threshold is 2 *** done -- 2.19.1 From: Alberto Garcia <berto@igalia.com> The blkverify mode of Quorum only works when the number of children is exactly two, so any attempt to add a new one must return an error. quorum_del_child() on the other hand doesn't need any additional check because decreasing the number of children would make it go under the vote threshold. Signed-off-by: Alberto Garcia <berto@igalia.com> Reported-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/quorum.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/block/quorum.c b/block/quorum.c index XXXXXXX..XXXXXXX 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -XXX,XX +XXX,XX @@ static void quorum_add_child(BlockDriverState *bs, BlockDriverState *child_bs, char indexstr[32]; int ret; + if (s->is_blkverify) { + error_setg(errp, "Cannot add a child to a quorum in blkverify mode"); + return; + } + assert(s->num_children <= INT_MAX / sizeof(BdrvChild *)); if (s->num_children == INT_MAX / sizeof(BdrvChild *) || s->next_child_index == UINT_MAX) { @@ -XXX,XX +XXX,XX @@ static void quorum_del_child(BlockDriverState *bs, BdrvChild *child, return; } + /* We know now that num_children > threshold, so blkverify must be false */ + assert(!s->is_blkverify); + bdrv_drained_begin(bs); /* We can safely remove this child now */ -- 2.19.1 From: Alberto Garcia <berto@igalia.com> This patch tests that you can add and remove drives from a Quorum using the x-blockdev-change command. Signed-off-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/081 | 86 ++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/081.out | 54 ++++++++++++++++++++++++ 2 files changed, 140 insertions(+) diff --git a/tests/qemu-iotests/081 b/tests/qemu-iotests/081 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/081 +++ b/tests/qemu-iotests/081 @@ -XXX,XX +XXX,XX @@ quorum="$quorum,file.children.2.driver=raw" $QEMU_IO -c "open -o $quorum" | _filter_qemu_io +echo +echo "== dynamically adding a child to a quorum ==" + +for verify in false true; do + run_qemu <<EOF + { "execute": "qmp_capabilities" } + { "execute": "blockdev-add", + "arguments": { + "driver": "quorum", + "node-name": "drive0-quorum", + "vote-threshold": 2, + "blkverify": ${verify}, + "children": [ + { + "driver": "$IMGFMT", + "file": { + "driver": "file", + "filename": "$TEST_DIR/1.raw" + } + }, + { + "driver": "$IMGFMT", + "file": { + "driver": "file", + "filename": "$TEST_DIR/2.raw" + } + } + ] + } + } + { "execute": "blockdev-add", + "arguments": { + "node-name": "drive3", + "driver": "$IMGFMT", + "file": { + "driver": "file", + "filename": "$TEST_DIR/2.raw" + } + } + } + { "execute": "x-blockdev-change", + "arguments": { "parent": "drive0-quorum", + "node": "drive3" } } + { "execute": "quit" } +EOF +done + +echo +echo "== dynamically removing a child from a quorum ==" + +for verify in false true; do + for vote_threshold in 1 2; do + run_qemu <<EOF + { "execute": "qmp_capabilities" } + { "execute": "blockdev-add", + "arguments": { + "driver": "quorum", + "node-name": "drive0-quorum", + "vote-threshold": ${vote_threshold}, + "blkverify": ${verify}, + "children": [ + { + "driver": "$IMGFMT", + "file": { + "driver": "file", + "filename": "$TEST_DIR/1.raw" + } + }, + { + "driver": "$IMGFMT", + "file": { + "driver": "file", + "filename": "$TEST_DIR/2.raw" + } + } + ] + } + } + { "execute": "x-blockdev-change", + "arguments": { "parent": "drive0-quorum", + "child": "children.1" } } + { "execute": "quit" } +EOF + done +done + # success, all done echo "*** done" rm -f $seq.full diff --git a/tests/qemu-iotests/081.out b/tests/qemu-iotests/081.out index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/081.out +++ b/tests/qemu-iotests/081.out @@ -XXX,XX +XXX,XX @@ read 10485760/10485760 bytes at offset 0 == checking the blkverify mode with invalid settings == can't open: blkverify=on can only be set if there are exactly two files and vote-threshold is 2 + +== dynamically adding a child to a quorum == +Testing: +QMP_VERSION +{"return": {}} +{"return": {}} +{"return": {}} +{"return": {}} +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}} + +Testing: +QMP_VERSION +{"return": {}} +{"return": {}} +{"return": {}} +{"error": {"class": "GenericError", "desc": "Cannot add a child to a quorum in blkverify mode"}} +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}} + + +== dynamically removing a child from a quorum == +Testing: +QMP_VERSION +{"return": {}} +{"return": {}} +{"return": {}} +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}} + +Testing: +QMP_VERSION +{"return": {}} +{"return": {}} +{"error": {"class": "GenericError", "desc": "The number of children cannot be lower than the vote threshold 2"}} +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}} + +Testing: +QMP_VERSION +{"return": {}} +{"error": {"class": "GenericError", "desc": "blkverify=on can only be set if there are exactly two files and vote-threshold is 2"}} +{"error": {"class": "GenericError", "desc": "Cannot find device=drive0-quorum nor node_name=drive0-quorum"}} +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}} + +Testing: +QMP_VERSION +{"return": {}} +{"return": {}} +{"error": {"class": "GenericError", "desc": "The number of children cannot be lower than the vote threshold 2"}} +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}} + *** done -- 2.19.1 To fully change the read-only state of a node, we must not only change bs->read_only, but also update bs->open_flags. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> --- block.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/block.c b/block.c index XXXXXXX..XXXXXXX 100644 --- a/block.c +++ b/block.c @@ -XXX,XX +XXX,XX @@ int bdrv_set_read_only(BlockDriverState *bs, bool read_only, Error **errp) } bs->read_only = read_only; + + if (read_only) { + bs->open_flags &= ~BDRV_O_RDWR; + } else { + bs->open_flags |= BDRV_O_RDWR; + } + return 0; } -- 2.19.1 If a management application builds the block graph node by node, the protocol layer doesn't inherit its read-only option from the format layer any more, so it must be set explicitly. Backing files should work on read-only storage, but at the same time, a block job like commit should be able to reopen them read-write if they are on read-write storage. However, without option inheritance, reopen only changes the read-only option for the root node (typically the format layer), but not the protocol layer, so reopening fails (the format layer wants to get write permissions, but the protocol layer is still read-only). A simple workaround for the problem in the management tool would be to open the protocol layer always read-write and to make only the format layer read-only for backing files. However, sometimes the file is actually stored on read-only storage and we don't know whether the image can be opened read-write (for example, for NBD it depends on the server we're trying to connect to). This adds an option that makes QEMU try to open the image read-write, but allows it to degrade to a read-only mode without returning an error. The documentation for this option is consciously phrased in a way that allows QEMU to switch to a better model eventually: Instead of trying when the image is first opened, making the read-only flag dynamic and changing it automatically whenever the first BLK_PERM_WRITE user is attached or the last one is detached would be much more useful behaviour. Unfortunately, this more useful behaviour is also a lot harder to implement, and libvirt needs a solution now before it can switch to -blockdev, so let's start with this easier approach for now. Instead of adding a new auto-read-only option, turning the existing read-only into an enum (with a bool alternate for compatibility) was considered, but it complicated the implementation to the point that it didn't seem to be worth it. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> --- qapi/block-core.json | 7 +++++++ include/block/block.h | 2 ++ block.c | 17 +++++++++++++++++ block/vvfat.c | 1 + blockdev.c | 2 +- 5 files changed, 28 insertions(+), 1 deletion(-) diff --git a/qapi/block-core.json b/qapi/block-core.json index XXXXXXX..XXXXXXX 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -XXX,XX +XXX,XX @@ # either generally or in certain configurations. In this case, # the default value does not work and the option must be # specified explicitly. +# @auto-read-only: if true and @read-only is false, QEMU may automatically +# decide not to open the image read-write as requested, but +# fall back to read-only instead (and switch between the modes +# later), e.g. depending on whether the image file is writable +# or whether a writing user is attached to the node +# (default: false, since 3.1) # @detect-zeroes: detect and optimize zero writes (Since 2.1) # (default: off) # @force-share: force share all permission on added nodes. @@ -XXX,XX +XXX,XX @@ '*discard': 'BlockdevDiscardOptions', '*cache': 'BlockdevCacheOptions', '*read-only': 'bool', + '*auto-read-only': 'bool', '*force-share': 'bool', '*detect-zeroes': 'BlockdevDetectZeroesOptions' }, 'discriminator': 'driver', diff --git a/include/block/block.h b/include/block/block.h index XXXXXXX..XXXXXXX 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -XXX,XX +XXX,XX @@ typedef struct HDGeometry { select an appropriate protocol driver, ignoring the format layer */ #define BDRV_O_NO_IO 0x10000 /* don't initialize for I/O */ +#define BDRV_O_AUTO_RDONLY 0x20000 /* degrade to read-only if opening read-write fails */ #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_NO_FLUSH) @@ -XXX,XX +XXX,XX @@ typedef struct HDGeometry { #define BDRV_OPT_CACHE_DIRECT "cache.direct" #define BDRV_OPT_CACHE_NO_FLUSH "cache.no-flush" #define BDRV_OPT_READ_ONLY "read-only" +#define BDRV_OPT_AUTO_READ_ONLY "auto-read-only" #define BDRV_OPT_DISCARD "discard" #define BDRV_OPT_FORCE_SHARE "force-share" diff --git a/block.c b/block.c index XXXXXXX..XXXXXXX 100644 --- a/block.c +++ b/block.c @@ -XXX,XX +XXX,XX @@ static void bdrv_inherited_options(int *child_flags, QDict *child_options, /* Inherit the read-only option from the parent if it's not set */ qdict_copy_default(child_options, parent_options, BDRV_OPT_READ_ONLY); + qdict_copy_default(child_options, parent_options, BDRV_OPT_AUTO_READ_ONLY); /* Our block drivers take care to send flushes and respect unmap policy, * so we can default to enable both on lower layers regardless of the @@ -XXX,XX +XXX,XX @@ static void bdrv_backing_options(int *child_flags, QDict *child_options, /* backing files always opened read-only */ qdict_set_default_str(child_options, BDRV_OPT_READ_ONLY, "on"); + qdict_set_default_str(child_options, BDRV_OPT_AUTO_READ_ONLY, "off"); flags &= ~BDRV_O_COPY_ON_READ; /* snapshot=on is handled on the top layer */ @@ -XXX,XX +XXX,XX @@ static void update_flags_from_options(int *flags, QemuOpts *opts) *flags |= BDRV_O_RDWR; } + assert(qemu_opt_find(opts, BDRV_OPT_AUTO_READ_ONLY)); + if (qemu_opt_get_bool_del(opts, BDRV_OPT_AUTO_READ_ONLY, false)) { + *flags |= BDRV_O_AUTO_RDONLY; + } } static void update_options_from_flags(QDict *options, int flags) @@ -XXX,XX +XXX,XX @@ static void update_options_from_flags(QDict *options, int flags) if (!qdict_haskey(options, BDRV_OPT_READ_ONLY)) { qdict_put_bool(options, BDRV_OPT_READ_ONLY, !(flags & BDRV_O_RDWR)); } + if (!qdict_haskey(options, BDRV_OPT_AUTO_READ_ONLY)) { + qdict_put_bool(options, BDRV_OPT_AUTO_READ_ONLY, + flags & BDRV_O_AUTO_RDONLY); + } } static void bdrv_assign_node_name(BlockDriverState *bs, @@ -XXX,XX +XXX,XX @@ QemuOptsList bdrv_runtime_opts = { .type = QEMU_OPT_BOOL, .help = "Node is opened in read-only mode", }, + { + .name = BDRV_OPT_AUTO_READ_ONLY, + .type = QEMU_OPT_BOOL, + .help = "Node can become read-only if opening read-write fails", + }, { .name = "detect-zeroes", .type = QEMU_OPT_STRING, @@ -XXX,XX +XXX,XX @@ BlockDriverState *bdrv_open_blockdev_ref(BlockdevRef *ref, Error **errp) qdict_set_default_str(qdict, BDRV_OPT_CACHE_DIRECT, "off"); qdict_set_default_str(qdict, BDRV_OPT_CACHE_NO_FLUSH, "off"); qdict_set_default_str(qdict, BDRV_OPT_READ_ONLY, "off"); + qdict_set_default_str(qdict, BDRV_OPT_AUTO_READ_ONLY, "off"); + } bs = bdrv_open_inherit(NULL, reference, qdict, 0, NULL, NULL, errp); diff --git a/block/vvfat.c b/block/vvfat.c index XXXXXXX..XXXXXXX 100644 --- a/block/vvfat.c +++ b/block/vvfat.c @@ -XXX,XX +XXX,XX @@ static void vvfat_qcow_options(int *child_flags, QDict *child_options, int parent_flags, QDict *parent_options) { qdict_set_default_str(child_options, BDRV_OPT_READ_ONLY, "off"); + qdict_set_default_str(child_options, BDRV_OPT_AUTO_READ_ONLY, "off"); qdict_set_default_str(child_options, BDRV_OPT_CACHE_NO_FLUSH, "on"); } diff --git a/blockdev.c b/blockdev.c index XXXXXXX..XXXXXXX 100644 --- a/blockdev.c +++ b/blockdev.c @@ -XXX,XX +XXX,XX @@ void qmp_blockdev_change_medium(bool has_device, const char *device, bdrv_flags = blk_get_open_flags_from_root_state(blk); bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | - BDRV_O_PROTOCOL); + BDRV_O_PROTOCOL | BDRV_O_AUTO_RDONLY); if (!has_read_only) { read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; -- 2.19.1 Commit e2b8247a322 introduced an error path in qemu_rbd_open() after calling rbd_open(), but neglected to close the image again in this error path. The error path should contain everything that the regular close function qemu_rbd_close() contains. This adds the missing rbd_close() call. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> --- block/rbd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block/rbd.c b/block/rbd.c index XXXXXXX..XXXXXXX 100644 --- a/block/rbd.c +++ b/block/rbd.c @@ -XXX,XX +XXX,XX @@ static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags, "automatically marking the image read-only."); r = bdrv_set_read_only(bs, true, &local_err); if (r < 0) { + rbd_close(s->image); error_propagate(errp, local_err); goto failed_open; } -- 2.19.1 Some block drivers have traditionally changed their node to read-only mode without asking the user. This behaviour has been marked deprecated since 2.11, expecting users to provide an explicit read-only=on option. Now that we have auto-read-only=on, enable these drivers to make use of the option. This is the only use of bdrv_set_read_only(), so we can make it a bit more specific and turn it into a bdrv_apply_auto_read_only() that is more convenient for drivers to use. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> --- include/block/block.h | 3 ++- block.c | 42 +++++++++++++++++++++++++++--------------- block/bochs.c | 17 ++++++----------- block/cloop.c | 16 +++++----------- block/dmg.c | 16 +++++----------- block/rbd.c | 15 ++++----------- block/vvfat.c | 10 ++-------- 7 files changed, 51 insertions(+), 68 deletions(-) diff --git a/include/block/block.h b/include/block/block.h index XXXXXXX..XXXXXXX 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -XXX,XX +XXX,XX @@ int bdrv_is_allocated_above(BlockDriverState *top, BlockDriverState *base, bool bdrv_is_read_only(BlockDriverState *bs); int bdrv_can_set_read_only(BlockDriverState *bs, bool read_only, bool ignore_allow_rdw, Error **errp); -int bdrv_set_read_only(BlockDriverState *bs, bool read_only, Error **errp); +int bdrv_apply_auto_read_only(BlockDriverState *bs, const char *errmsg, + Error **errp); bool bdrv_is_writable(BlockDriverState *bs); bool bdrv_is_sg(BlockDriverState *bs); bool bdrv_is_inserted(BlockDriverState *bs); diff --git a/block.c b/block.c index XXXXXXX..XXXXXXX 100644 --- a/block.c +++ b/block.c @@ -XXX,XX +XXX,XX @@ int bdrv_can_set_read_only(BlockDriverState *bs, bool read_only, return 0; } -/* TODO Remove (deprecated since 2.11) - * Block drivers are not supposed to automatically change bs->read_only. - * Instead, they should just check whether they can provide what the user - * explicitly requested and error out if read-write is requested, but they can - * only provide read-only access. */ -int bdrv_set_read_only(BlockDriverState *bs, bool read_only, Error **errp) +/* + * Called by a driver that can only provide a read-only image. + * + * Returns 0 if the node is already read-only or it could switch the node to + * read-only because BDRV_O_AUTO_RDONLY is set. + * + * Returns -EACCES if the node is read-write and BDRV_O_AUTO_RDONLY is not set + * or bdrv_can_set_read_only() forbids making the node read-only. If @errmsg + * is not NULL, it is used as the error message for the Error object. + */ +int bdrv_apply_auto_read_only(BlockDriverState *bs, const char *errmsg, + Error **errp) { int ret = 0; - ret = bdrv_can_set_read_only(bs, read_only, false, errp); - if (ret < 0) { - return ret; + if (!(bs->open_flags & BDRV_O_RDWR)) { + return 0; + } + if (!(bs->open_flags & BDRV_O_AUTO_RDONLY)) { + goto fail; } - bs->read_only = read_only; - - if (read_only) { - bs->open_flags &= ~BDRV_O_RDWR; - } else { - bs->open_flags |= BDRV_O_RDWR; + ret = bdrv_can_set_read_only(bs, true, false, NULL); + if (ret < 0) { + goto fail; } + bs->read_only = true; + bs->open_flags &= ~BDRV_O_RDWR; + return 0; + +fail: + error_setg(errp, "%s", errmsg ?: "Image is read-only"); + return -EACCES; } void bdrv_get_full_backing_filename_from_filename(const char *backed, diff --git a/block/bochs.c b/block/bochs.c index XXXXXXX..XXXXXXX 100644 --- a/block/bochs.c +++ b/block/bochs.c @@ -XXX,XX +XXX,XX @@ static int bochs_open(BlockDriverState *bs, QDict *options, int flags, struct bochs_header bochs; int ret; + /* No write support yet */ + ret = bdrv_apply_auto_read_only(bs, NULL, errp); + if (ret < 0) { + return ret; + } + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, false, errp); if (!bs->file) { return -EINVAL; } - if (!bdrv_is_read_only(bs)) { - error_report("Opening bochs images without an explicit read-only=on " - "option is deprecated. Future versions will refuse to " - "open the image instead of automatically marking the " - "image read-only."); - ret = bdrv_set_read_only(bs, true, errp); /* no write support yet */ - if (ret < 0) { - return ret; - } - } - ret = bdrv_pread(bs->file, 0, &bochs, sizeof(bochs)); if (ret < 0) { return ret; diff --git a/block/cloop.c b/block/cloop.c index XXXXXXX..XXXXXXX 100644 --- a/block/cloop.c +++ b/block/cloop.c @@ -XXX,XX +XXX,XX @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags, uint32_t offsets_size, max_compressed_block_size = 1, i; int ret; + ret = bdrv_apply_auto_read_only(bs, NULL, errp); + if (ret < 0) { + return ret; + } + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, false, errp); if (!bs->file) { return -EINVAL; } - if (!bdrv_is_read_only(bs)) { - error_report("Opening cloop images without an explicit read-only=on " - "option is deprecated. Future versions will refuse to " - "open the image instead of automatically marking the " - "image read-only."); - ret = bdrv_set_read_only(bs, true, errp); - if (ret < 0) { - return ret; - } - } - /* read header */ ret = bdrv_pread(bs->file, 128, &s->block_size, 4); if (ret < 0) { diff --git a/block/dmg.c b/block/dmg.c index XXXXXXX..XXXXXXX 100644 --- a/block/dmg.c +++ b/block/dmg.c @@ -XXX,XX +XXX,XX @@ static int dmg_open(BlockDriverState *bs, QDict *options, int flags, int64_t offset; int ret; + ret = bdrv_apply_auto_read_only(bs, NULL, errp); + if (ret < 0) { + return ret; + } + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, false, errp); if (!bs->file) { return -EINVAL; } - if (!bdrv_is_read_only(bs)) { - error_report("Opening dmg images without an explicit read-only=on " - "option is deprecated. Future versions will refuse to " - "open the image instead of automatically marking the " - "image read-only."); - ret = bdrv_set_read_only(bs, true, errp); - if (ret < 0) { - return ret; - } - } - block_module_load_one("dmg-bz2"); s->n_chunks = 0; diff --git a/block/rbd.c b/block/rbd.c index XXXXXXX..XXXXXXX 100644 --- a/block/rbd.c +++ b/block/rbd.c @@ -XXX,XX +XXX,XX @@ static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags, /* If we are using an rbd snapshot, we must be r/o, otherwise * leave as-is */ if (s->snap != NULL) { - if (!bdrv_is_read_only(bs)) { - error_report("Opening rbd snapshots without an explicit " - "read-only=on option is deprecated. Future versions " - "will refuse to open the image instead of " - "automatically marking the image read-only."); - r = bdrv_set_read_only(bs, true, &local_err); - if (r < 0) { - rbd_close(s->image); - error_propagate(errp, local_err); - goto failed_open; - } + r = bdrv_apply_auto_read_only(bs, "rbd snapshots are read-only", errp); + if (r < 0) { + rbd_close(s->image); + goto failed_open; } } diff --git a/block/vvfat.c b/block/vvfat.c index XXXXXXX..XXXXXXX 100644 --- a/block/vvfat.c +++ b/block/vvfat.c @@ -XXX,XX +XXX,XX @@ static int vvfat_open(BlockDriverState *bs, QDict *options, int flags, "Unable to set VVFAT to 'rw' when drive is read-only"); goto fail; } - } else if (!bdrv_is_read_only(bs)) { - error_report("Opening non-rw vvfat images without an explicit " - "read-only=on option is deprecated. Future versions " - "will refuse to open the image instead of " - "automatically marking the image read-only."); - /* read only is the default for safety */ - ret = bdrv_set_read_only(bs, true, &local_err); + } else { + ret = bdrv_apply_auto_read_only(bs, NULL, errp); if (ret < 0) { - error_propagate(errp, local_err); goto fail; } } -- 2.19.1 If read-only=off, but auto-read-only=on is given, open a read-write NBD connection if the server provides a read-write export, but instead of erroring out for read-only exports, just degrade to read-only. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> --- block/nbd-client.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/block/nbd-client.c b/block/nbd-client.c index XXXXXXX..XXXXXXX 100644 --- a/block/nbd-client.c +++ b/block/nbd-client.c @@ -XXX,XX +XXX,XX @@ int nbd_client_init(BlockDriverState *bs, logout("Failed to negotiate with the NBD server\n"); return ret; } - if (client->info.flags & NBD_FLAG_READ_ONLY && - !bdrv_is_read_only(bs)) { - error_setg(errp, - "request for write access conflicts with read-only export"); - return -EACCES; + if (client->info.flags & NBD_FLAG_READ_ONLY) { + ret = bdrv_apply_auto_read_only(bs, "NBD export is read-only", errp); + if (ret < 0) { + return ret; + } } if (client->info.flags & NBD_FLAG_SEND_FUA) { bs->supported_write_flags = BDRV_REQ_FUA; -- 2.19.1 If read-only=off, but auto-read-only=on is given, open the file read-write if we have the permissions, but instead of erroring out for read-only files, just degrade to read-only. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> --- block/file-posix.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index XXXXXXX..XXXXXXX 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -XXX,XX +XXX,XX @@ static int raw_open_common(BlockDriverState *bs, QDict *options, s->fd = -1; fd = qemu_open(filename, s->open_flags, 0644); - if (fd < 0) { - ret = -errno; - error_setg_errno(errp, errno, "Could not open '%s'", filename); + ret = fd < 0 ? -errno : 0; + + if (ret == -EACCES || ret == -EROFS) { + /* Try to degrade to read-only, but if it doesn't work, still use the + * normal error message. */ + if (bdrv_apply_auto_read_only(bs, NULL, NULL) == 0) { + bdrv_flags &= ~BDRV_O_RDWR; + raw_parse_flags(bdrv_flags, &s->open_flags); + assert(!(s->open_flags & O_CREAT)); + fd = qemu_open(filename, s->open_flags); + ret = fd < 0 ? -errno : 0; + } + } + + if (ret < 0) { + error_setg_errno(errp, -ret, "Could not open '%s'", filename); if (ret == -EROFS) { ret = -EACCES; } -- 2.19.1 If read-only=off, but auto-read-only=on is given, just degrade to read-only. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> --- block/curl.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/block/curl.c b/block/curl.c index XXXXXXX..XXXXXXX 100644 --- a/block/curl.c +++ b/block/curl.c @@ -XXX,XX +XXX,XX @@ static int curl_open(BlockDriverState *bs, QDict *options, int flags, const char *protocol_delimiter; int ret; - - if (flags & BDRV_O_RDWR) { - error_setg(errp, "curl block device does not support writes"); - return -EROFS; + ret = bdrv_apply_auto_read_only(bs, "curl driver does not support writes", + errp); + if (ret < 0) { + return ret; } if (!libcurl_initialized) { -- 2.19.1 If read-only=off, but auto-read-only=on is given, open the file read-write if we have the permissions, but instead of erroring out for read-only files, just degrade to read-only. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> --- block/gluster.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/block/gluster.c b/block/gluster.c index XXXXXXX..XXXXXXX 100644 --- a/block/gluster.c +++ b/block/gluster.c @@ -XXX,XX +XXX,XX @@ static int qemu_gluster_open(BlockDriverState *bs, QDict *options, qemu_gluster_parse_flags(bdrv_flags, &open_flags); s->fd = glfs_open(s->glfs, gconf->path, open_flags); - if (!s->fd) { - ret = -errno; + ret = s->fd ? 0 : -errno; + + if (ret == -EACCES || ret == -EROFS) { + /* Try to degrade to read-only, but if it doesn't work, still use the + * normal error message. */ + if (bdrv_apply_auto_read_only(bs, NULL, NULL) == 0) { + open_flags = (open_flags & ~O_RDWR) | O_RDONLY; + s->fd = glfs_open(s->glfs, gconf->path, open_flags); + ret = s->fd ? 0 : -errno; + } } s->supports_seek_data = qemu_gluster_test_seek(s->fd); -- 2.19.1 If read-only=off, but auto-read-only=on is given, open the volume read-write if we have the permissions, but instead of erroring out for read-only volumes, just degrade to read-only. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> --- block/iscsi.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/block/iscsi.c b/block/iscsi.c index XXXXXXX..XXXXXXX 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -XXX,XX +XXX,XX @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags, /* Check the write protect flag of the LUN if we want to write */ if (iscsilun->type == TYPE_DISK && (flags & BDRV_O_RDWR) && iscsilun->write_protected) { - error_setg(errp, "Cannot open a write protected LUN as read-write"); - ret = -EACCES; - goto out; + ret = bdrv_apply_auto_read_only(bs, "LUN is write protected", errp); + if (ret < 0) { + goto out; + } + flags &= ~BDRV_O_RDWR; } iscsi_readcapacity_sync(iscsilun, &local_err); -- 2.19.1 While we want machine interfaces like -blockdev and QMP blockdev-add to add as little auto-detection as possible so that management tools are explicit about their needs, -drive is a convenience option for human users. Enabling auto-read-only=on by default there enables users to use read-only images for read-only guest devices without having to specify read-only=on explicitly. If they try to attach the image to a read-write device, they will still get an error message. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> --- blockdev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/blockdev.c b/blockdev.c index XXXXXXX..XXXXXXX 100644 --- a/blockdev.c +++ b/blockdev.c @@ -XXX,XX +XXX,XX @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off"); + qdict_set_default_str(bs_opts, BDRV_OPT_AUTO_READ_ONLY, "on"); assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); if (runstate_check(RUN_STATE_INMIGRATE)) { -- 2.19.1 Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> --- tests/qemu-iotests/232 | 147 +++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/232.out | 59 +++++++++++++++ tests/qemu-iotests/group | 1 + 3 files changed, 207 insertions(+) create mode 100755 tests/qemu-iotests/232 create mode 100644 tests/qemu-iotests/232.out diff --git a/tests/qemu-iotests/232 b/tests/qemu-iotests/232 new file mode 100755 index XXXXXXX..XXXXXXX --- /dev/null +++ b/tests/qemu-iotests/232 @@ -XXX,XX +XXX,XX @@ +#!/bin/bash +# +# Test for auto-read-only +# +# Copyright (C) 2018 Red Hat, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# + +# creator +owner=kwolf@redhat.com + +seq=`basename $0` +echo "QA output created by $seq" + +here=`pwd` +status=1 # failure is the default! + +_cleanup() +{ + _cleanup_test_img + rm -f $TEST_IMG.snap +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common.rc +. ./common.filter + +_supported_fmt generic +_supported_proto file +_supported_os Linux + +function do_run_qemu() +{ + echo Testing: "$@" + ( + if ! test -t 0; then + while read cmd; do + echo $cmd + done + fi + echo quit + ) | $QEMU -nographic -monitor stdio -nodefaults "$@" + echo +} + +function run_qemu() +{ + do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_hmp | + _filter_generated_node_ids | _filter_imgfmt +} + +function run_qemu_info_block() +{ + echo "info block -n" | run_qemu "$@" | grep -e "(file" -e "QEMU_PROG" +} + +size=128M + +_make_test_img $size + +echo +echo "=== -drive with read-write image: read-only/auto-read-only combinations ===" +echo + +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=on,auto-read-only=off +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=on,auto-read-only=on +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=on +echo +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=off,auto-read-only=off +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=off,auto-read-only=on +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=off +echo +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,auto-read-only=off +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,auto-read-only=on +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none + +echo +echo "=== -drive with read-only image: read-only/auto-read-only combinations ===" +echo + +chmod a-w $TEST_IMG + +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=on,auto-read-only=off +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=on,auto-read-only=on +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=on +echo +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=off,auto-read-only=off +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=off,auto-read-only=on +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=off +echo +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,auto-read-only=off +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,auto-read-only=on +run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none + +echo +echo "=== -blockdev with read-write image: read-only/auto-read-only combinations ===" +echo + +chmod a+w $TEST_IMG + +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=on,auto-read-only=off +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=on,auto-read-only=on +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=on +echo +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=off,auto-read-only=off +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=off,auto-read-only=on +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=off +echo +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,auto-read-only=off +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,auto-read-only=on +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0 + +echo +echo "=== -blockdev with read-only image: read-only/auto-read-only combinations ===" +echo + +chmod a-w $TEST_IMG + +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=on,auto-read-only=off +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=on,auto-read-only=on +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=on +echo +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=off,auto-read-only=off +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=off,auto-read-only=on +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,read-only=off +echo +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,auto-read-only=off +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0,auto-read-only=on +run_qemu_info_block -blockdev driver=file,filename="$TEST_IMG",node-name=node0 + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 diff --git a/tests/qemu-iotests/232.out b/tests/qemu-iotests/232.out new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/tests/qemu-iotests/232.out @@ -XXX,XX +XXX,XX @@ +QA output created by 232 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 + +=== -drive with read-write image: read-only/auto-read-only combinations === + +NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) +NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) +NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) + +NODE_NAME: TEST_DIR/t.IMGFMT (file) +NODE_NAME: TEST_DIR/t.IMGFMT (file) +NODE_NAME: TEST_DIR/t.IMGFMT (file) + +NODE_NAME: TEST_DIR/t.IMGFMT (file) +NODE_NAME: TEST_DIR/t.IMGFMT (file) +NODE_NAME: TEST_DIR/t.IMGFMT (file) + +=== -drive with read-only image: read-only/auto-read-only combinations === + +NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) +NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) +NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) + +QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,read-only=off,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) +NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) + +QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) +NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) + +=== -blockdev with read-write image: read-only/auto-read-only combinations === + +node0: TEST_DIR/t.IMGFMT (file, read-only) +node0: TEST_DIR/t.IMGFMT (file, read-only) +node0: TEST_DIR/t.IMGFMT (file, read-only) + +node0: TEST_DIR/t.IMGFMT (file) +node0: TEST_DIR/t.IMGFMT (file) +node0: TEST_DIR/t.IMGFMT (file) + +node0: TEST_DIR/t.IMGFMT (file) +node0: TEST_DIR/t.IMGFMT (file) +node0: TEST_DIR/t.IMGFMT (file) + +=== -blockdev with read-only image: read-only/auto-read-only combinations === + +node0: TEST_DIR/t.IMGFMT (file, read-only) +node0: TEST_DIR/t.IMGFMT (file, read-only) +node0: TEST_DIR/t.IMGFMT (file, read-only) + +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,read-only=off,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +node0: TEST_DIR/t.IMGFMT (file, read-only) +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied + +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +node0: TEST_DIR/t.IMGFMT (file, read-only) +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +*** done diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -XXX,XX +XXX,XX @@ 227 auto quick 229 auto quick 231 auto quick +232 auto quick -- 2.19.1 From: Max Reitz <mreitz@redhat.com> This adds some whitespace into the option help (including indentation) and puts angle brackets around the type names. Furthermore, the list name is no longer printed as part of every line, but only once in advance, and only if the caller did not print a caption already. This patch also restores the description alignment we had before commit 9cbef9d68ee1d8d0, just at 24 instead of 16 characters like we used to. This increase is because now we have the type and two spaces of indentation before the description, and with a usual type name length of three chracters, this sums up to eight additional characters -- which means that we now need 24 characters to get the same amount of padding for most options. Also, 24 is a third of 80, which makes it kind of a round number in terminal terms. Finally, this patch amends the reference output of iotest 082 to match the changes (and thus makes it pass again). Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- include/qemu/option.h | 2 +- qemu-img.c | 4 +- util/qemu-option.c | 32 +- tests/qemu-iotests/082.out | 956 ++++++++++++++++++------------------- 4 files changed, 507 insertions(+), 487 deletions(-) diff --git a/include/qemu/option.h b/include/qemu/option.h index XXXXXXX..XXXXXXX 100644 --- a/include/qemu/option.h +++ b/include/qemu/option.h @@ -XXX,XX +XXX,XX @@ typedef int (*qemu_opts_loopfunc)(void *opaque, QemuOpts *opts, Error **errp); int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque, Error **errp); void qemu_opts_print(QemuOpts *opts, const char *sep); -void qemu_opts_print_help(QemuOptsList *list); +void qemu_opts_print_help(QemuOptsList *list, bool print_caption); void qemu_opts_free(QemuOptsList *list); QemuOptsList *qemu_opts_append(QemuOptsList *dst, QemuOptsList *list); diff --git a/qemu-img.c b/qemu-img.c index XXXXXXX..XXXXXXX 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -XXX,XX +XXX,XX @@ static int print_block_option_help(const char *filename, const char *fmt) } printf("Supported options:\n"); - qemu_opts_print_help(create_opts); + qemu_opts_print_help(create_opts, false); qemu_opts_free(create_opts); return 0; } @@ -XXX,XX +XXX,XX @@ static int print_amend_option_help(const char *format) assert(drv->create_opts); printf("Creation options for '%s':\n", format); - qemu_opts_print_help(drv->create_opts); + qemu_opts_print_help(drv->create_opts, false); printf("\nNote that not all of these options may be amendable.\n"); return 0; } diff --git a/util/qemu-option.c b/util/qemu-option.c index XXXXXXX..XXXXXXX 100644 --- a/util/qemu-option.c +++ b/util/qemu-option.c @@ -XXX,XX +XXX,XX @@ static const char *opt_type_to_string(enum QemuOptType type) g_assert_not_reached(); } -void qemu_opts_print_help(QemuOptsList *list) +/** + * Print the list of options available in the given list. If + * @print_caption is true, a caption (including the list name, if it + * exists) is printed. The options itself will be indented, so + * @print_caption should only be set to false if the caller prints its + * own custom caption (so that the indentation makes sense). + */ +void qemu_opts_print_help(QemuOptsList *list, bool print_caption) { QemuOptDesc *desc; int i; @@ -XXX,XX +XXX,XX @@ void qemu_opts_print_help(QemuOptsList *list) desc = list->desc; while (desc && desc->name) { GString *str = g_string_new(NULL); - if (list->name) { - g_string_append_printf(str, "%s.", list->name); - } - g_string_append_printf(str, "%s=%s", desc->name, + g_string_append_printf(str, " %s=<%s>", desc->name, opt_type_to_string(desc->type)); if (desc->help) { + if (str->len < 24) { + g_string_append_printf(str, "%*s", 24 - (int)str->len, ""); + } g_string_append_printf(str, " - %s", desc->help); } g_ptr_array_add(array, g_string_free(str, false)); @@ -XXX,XX +XXX,XX @@ void qemu_opts_print_help(QemuOptsList *list) } g_ptr_array_sort(array, (GCompareFunc)qemu_pstrcmp0); + if (print_caption && array->len > 0) { + if (list->name) { + printf("%s options:\n", list->name); + } else { + printf("Options:\n"); + } + } else if (array->len == 0) { + if (list->name) { + printf("There are no options for %s.\n", list->name); + } else { + printf("No options available.\n"); + } + } for (i = 0; i < array->len; i++) { printf("%s\n", (char *)array->pdata[i]); } @@ -XXX,XX +XXX,XX @@ QemuOpts *qemu_opts_parse_noisily(QemuOptsList *list, const char *params, opts = opts_parse(list, params, permit_abbrev, false, &invalidp, &err); if (err) { if (invalidp && has_help_option(params)) { - qemu_opts_print_help(list); + qemu_opts_print_help(list, true); error_free(err); } else { error_report_err(err); diff --git a/tests/qemu-iotests/082.out b/tests/qemu-iotests/082.out index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/082.out +++ b/tests/qemu-iotests/082.out @@ -XXX,XX +XXX,XX @@ cluster_size: 8192 Testing: create -f qcow2 -o help TEST_DIR/t.qcow2 128M Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: create -f qcow2 -o ? TEST_DIR/t.qcow2 128M Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: create -f qcow2 -o cluster_size=4k,help TEST_DIR/t.qcow2 128M Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: create -f qcow2 -o cluster_size=4k,? TEST_DIR/t.qcow2 128M Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: create -f qcow2 -o help,cluster_size=4k TEST_DIR/t.qcow2 128M Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: create -f qcow2 -o ?,cluster_size=4k TEST_DIR/t.qcow2 128M Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: create -f qcow2 -o cluster_size=4k -o help TEST_DIR/t.qcow2 128M Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: create -f qcow2 -o cluster_size=4k -o ? TEST_DIR/t.qcow2 128M Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: create -f qcow2 -u -o backing_file=TEST_DIR/t.qcow2,,help TEST_DIR/t.qcow2 128M Formatting 'TEST_DIR/t.qcow2', fmt=qcow2 size=134217728 backing_file=TEST_DIR/t.qcow2,,help cluster_size=65536 lazy_refcounts=off refcount_bits=16 @@ -XXX,XX +XXX,XX @@ qemu-img: Invalid option list: ,, Testing: create -f qcow2 -o help Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: create -o help Supported options: -size Virtual disk size + size=<size> - Virtual disk size Testing: create -f bochs -o help qemu-img: Format driver 'bochs' does not support image creation @@ -XXX,XX +XXX,XX @@ cluster_size: 8192 Testing: convert -O qcow2 -o help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: convert -O qcow2 -o ? TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: convert -O qcow2 -o cluster_size=4k,help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: convert -O qcow2 -o cluster_size=4k,? TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: convert -O qcow2 -o help,cluster_size=4k TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: convert -O qcow2 -o ?,cluster_size=4k TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: convert -O qcow2 -o cluster_size=4k -o help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: convert -O qcow2 -o cluster_size=4k -o ? TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits -nocow Turn off copy-on-write (valid only on btrfs) + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: convert -O qcow2 -o backing_file=TEST_DIR/t.qcow2,,help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base qemu-img: Could not open 'TEST_DIR/t.qcow2.base': Could not open backing file: Could not open 'TEST_DIR/t.qcow2,help': No such file or directory @@ -XXX,XX +XXX,XX @@ qemu-img: Invalid option list: ,, Testing: convert -O qcow2 -o help Supported options: -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Testing: convert -o help Supported options: -size Virtual disk size + size=<size> - Virtual disk size Testing: convert -O bochs -o help qemu-img: Format driver 'bochs' does not support image creation @@ -XXX,XX +XXX,XX @@ cluster_size: 65536 Testing: amend -f qcow2 -o help TEST_DIR/t.qcow2 Creation options for 'qcow2': -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Note that not all of these options may be amendable. Testing: amend -f qcow2 -o ? TEST_DIR/t.qcow2 Creation options for 'qcow2': -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Note that not all of these options may be amendable. Testing: amend -f qcow2 -o cluster_size=4k,help TEST_DIR/t.qcow2 Creation options for 'qcow2': -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Note that not all of these options may be amendable. Testing: amend -f qcow2 -o cluster_size=4k,? TEST_DIR/t.qcow2 Creation options for 'qcow2': -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Note that not all of these options may be amendable. Testing: amend -f qcow2 -o help,cluster_size=4k TEST_DIR/t.qcow2 Creation options for 'qcow2': -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Note that not all of these options may be amendable. Testing: amend -f qcow2 -o ?,cluster_size=4k TEST_DIR/t.qcow2 Creation options for 'qcow2': -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Note that not all of these options may be amendable. Testing: amend -f qcow2 -o cluster_size=4k -o help TEST_DIR/t.qcow2 Creation options for 'qcow2': -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Note that not all of these options may be amendable. Testing: amend -f qcow2 -o cluster_size=4k -o ? TEST_DIR/t.qcow2 Creation options for 'qcow2': -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Note that not all of these options may be amendable. @@ -XXX,XX +XXX,XX @@ qemu-img: Invalid option list: ,, Testing: amend -f qcow2 -o help Creation options for 'qcow2': -size Virtual disk size -compat Compatibility level (0.10 or 1.1) -backing_file File name of a base image -backing_fmt Image format of the base image -encryption Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) -encrypt.format Encrypt the image, format choices: 'aes', 'luks' -encrypt.key-secret ID of secret providing qcow AES key or LUKS passphrase -encrypt.cipher-alg Name of encryption cipher algorithm -encrypt.cipher-mode Name of encryption cipher mode -encrypt.ivgen-alg Name of IV generator algorithm -encrypt.ivgen-hash-alg Name of IV generator hash algorithm -encrypt.hash-alg Name of encryption hash algorithm -encrypt.iter-time Time to spend in PBKDF in milliseconds -cluster_size qcow2 cluster size -preallocation Preallocation mode (allowed values: off, metadata, falloc, full) -lazy_refcounts Postpone refcount updates -refcount_bits Width of a reference count entry in bits + backing_file=<str> - File name of a base image + backing_fmt=<str> - Image format of the base image + cluster_size=<size> - qcow2 cluster size + compat=<str> - Compatibility level (0.10 or 1.1) + encrypt.cipher-alg=<str> - Name of encryption cipher algorithm + encrypt.cipher-mode=<str> - Name of encryption cipher mode + encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks' + encrypt.hash-alg=<str> - Name of encryption hash algorithm + encrypt.iter-time=<num> - Time to spend in PBKDF in milliseconds + encrypt.ivgen-alg=<str> - Name of IV generator algorithm + encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm + encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase + encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + lazy_refcounts=<bool (on/off)> - Postpone refcount updates + preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) + refcount_bits=<num> - Width of a reference count entry in bits + size=<size> - Virtual disk size Note that not all of these options may be amendable. Testing: convert -o help Supported options: -size Virtual disk size + size=<size> - Virtual disk size Testing: amend -f bochs -o help qemu-img: Format driver 'bochs' does not support option amendment -- 2.19.1 From: Max Reitz <mreitz@redhat.com> Following the example of qemu_opts_print_help(), indent all entries in the list of character devices. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- chardev/char.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/chardev/char.c b/chardev/char.c index XXXXXXX..XXXXXXX 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -XXX,XX +XXX,XX @@ help_string_append(const char *name, void *opaque) { GString *str = opaque; - g_string_append_printf(str, "\n%s", name); + g_string_append_printf(str, "\n %s", name); } static const char *chardev_alias_translate(const char *name) -- 2.19.1 From: Max Reitz <mreitz@redhat.com> Just like in qemu_opts_print_help(), print the device name as a caption instead of on every single line, indent all options, add angle brackets around types, and align the descriptions after 24 characters. Also, separate the descriptions with " - " instead of putting them in parentheses, because that is what we do everywhere else. This does look a bit funny here because basically all bits have the description "on/off", but funny does not mean it is less readable. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- qdev-monitor.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/qdev-monitor.c b/qdev-monitor.c index XXXXXXX..XXXXXXX 100644 --- a/qdev-monitor.c +++ b/qdev-monitor.c @@ -XXX,XX +XXX,XX @@ int qdev_device_help(QemuOpts *opts) goto error; } + if (prop_list) { + out_printf("%s options:\n", driver); + } else { + out_printf("There are no options for %s.\n", driver); + } for (prop = prop_list; prop; prop = prop->next) { - out_printf("%s.%s=%s", driver, prop->value->name, prop->value->type); + int len; + out_printf(" %s=<%s>%n", prop->value->name, prop->value->type, &len); if (prop->value->has_description) { - out_printf(" (%s)\n", prop->value->description); + if (len < 24) { + out_printf("%*s", 24 - len, ""); + } + out_printf(" - %s\n", prop->value->description); } else { out_printf("\n"); } -- 2.19.1 From: Max Reitz <mreitz@redhat.com> Just like in qemu_opts_print_help(), print the object name as a caption instead of on every single line, indent all options, add angle brackets around types, and align the descriptions after 24 characters. Also, indent every object name in the list of available objects. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- vl.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/vl.c b/vl.c index XXXXXXX..XXXXXXX 100644 --- a/vl.c +++ b/vl.c @@ -XXX,XX +XXX,XX @@ static bool object_create_initial(const char *type, QemuOpts *opts) list = object_class_get_list_sorted(TYPE_USER_CREATABLE, false); for (l = list; l != NULL; l = l->next) { ObjectClass *oc = OBJECT_CLASS(l->data); - printf("%s\n", object_class_get_name(oc)); + printf(" %s\n", object_class_get_name(oc)); } g_slist_free(list); exit(0); @@ -XXX,XX +XXX,XX @@ static bool object_create_initial(const char *type, QemuOpts *opts) } str = g_string_new(NULL); - g_string_append_printf(str, "%s.%s=%s", type, - prop->name, prop->type); + g_string_append_printf(str, " %s=<%s>", prop->name, prop->type); if (prop->description) { + if (str->len < 24) { + g_string_append_printf(str, "%*s", 24 - (int)str->len, ""); + } g_string_append_printf(str, " - %s", prop->description); } g_ptr_array_add(array, g_string_free(str, false)); } g_ptr_array_sort(array, (GCompareFunc)qemu_pstrcmp0); + if (array->len > 0) { + printf("%s options:\n", type); + } else { + printf("There are no options for %s.\n", type); + } for (i = 0; i < array->len; i++) { printf("%s\n", (char *)array->pdata[i]); } -- 2.19.1 From: Max Reitz <mreitz@redhat.com> There is no good reason why there should be a newline in this description, so remove it. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- vl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/vl.c b/vl.c index XXXXXXX..XXXXXXX 100644 --- a/vl.c +++ b/vl.c @@ -XXX,XX +XXX,XX @@ static QemuOptsList qemu_fw_cfg_opts = { }, { .name = "file", .type = QEMU_OPT_STRING, - .help = "Sets the name of the file from which\n" + .help = "Sets the name of the file from which " "the fw_cfg blob will be loaded", }, { .name = "string", -- 2.19.1 From: Leonid Bloch <lbloch@janustech.com> If an expression is used to define DEFAULT_CLUSTER_SIZE, when compiled, it will be embedded as a literal expression in the binary (as the default value) because it is stringified to mark the size of the default value. Now this is fixed by using a defined number to define this value. Signed-off-by: Leonid Bloch <lbloch@janustech.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/vdi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/block/vdi.c b/block/vdi.c index XXXXXXX..XXXXXXX 100644 --- a/block/vdi.c +++ b/block/vdi.c @@ -XXX,XX +XXX,XX @@ #define BLOCK_OPT_STATIC "static" #define SECTOR_SIZE 512 -#define DEFAULT_CLUSTER_SIZE (1 * MiB) +#define DEFAULT_CLUSTER_SIZE S_1MiB #if defined(CONFIG_VDI_DEBUG) #define VDI_DEBUG 1 @@ -XXX,XX +XXX,XX @@ static int vdi_open(BlockDriverState *bs, QDict *options, int flags, goto fail; } else if (header.block_size != DEFAULT_CLUSTER_SIZE) { error_setg(errp, "unsupported VDI image (block size %" PRIu32 - " is not %" PRIu64 ")", + " is not %" PRIu32 ")", header.block_size, DEFAULT_CLUSTER_SIZE); ret = -ENOTSUP; goto fail; -- 2.19.1 From: Leonid Bloch <lbloch@janustech.com> The lookup table for power-of-two sizes was added in commit 540b8492618eb for the purpose of having convenient shortcuts for these sizes in cases when the literal number has to be present at compile time, and expressions as '(1 * KiB)' can not be used. One such case is the stringification of sizes. Beyond that, it is convenient to use these shortcuts for all power-of-two sizes, even if they don't have to be literal numbers. Despite its convenience, this table introduced 55 lines of "dumb" code, the purpose and origin of which are obscure without reading the message of the commit which introduced it. This patch fixes that by adding a comment to the code itself with a brief explanation for the reasoning behind this table. This comment includes the short AWK script that generated the table, so that anyone who's interested could make sure that the values in it are correct (otherwise these values look as if they were typed manually). Signed-off-by: Leonid Bloch <lbloch@janustech.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- include/qemu/units.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/include/qemu/units.h b/include/qemu/units.h index XXXXXXX..XXXXXXX 100644 --- a/include/qemu/units.h +++ b/include/qemu/units.h @@ -XXX,XX +XXX,XX @@ #define PiB (INT64_C(1) << 50) #define EiB (INT64_C(1) << 60) +/* + * The following lookup table is intended to be used when a literal string of + * the number of bytes is required (for example if it needs to be stringified). + * It can also be used for generic shortcuts of power-of-two sizes. + * This table is generated using the AWK script below: + * + * BEGIN { + * suffix="KMGTPE"; + * for(i=10; i<64; i++) { + * val=2**i; + * s=substr(suffix, int(i/10), 1); + * n=2**(i%10); + * pad=21-int(log(n)/log(10)); + * printf("#define S_%d%siB %*d\n", n, s, pad, val); + * } + * } + */ + #define S_1KiB 1024 #define S_2KiB 2048 #define S_4KiB 4096 -- 2.19.1 The following changes since commit b785d25e91718a660546a6550f64b3c543af7754: Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging (2020-12-11 13:50:35 +0000) are available in the Git repository at: git://repo.or.cz/qemu/kevin.git tags/for-upstream for you to fetch changes up to 960d5fb3e8ee09bc5f1a5c84f66dce42a6cef920: block: Fix deadlock in bdrv_co_yield_to_drain() (2020-12-11 17:52:40 +0100) ---------------------------------------------------------------- Block layer patches: - Support for FUSE exports - Fix deadlock in bdrv_co_yield_to_drain() - Use lock guard macros - Some preparational patches for 64 bit block layer - file-posix: Fix request extension to INT64_MAX in raw_do_pwrite_zeroes() ---------------------------------------------------------------- Gan Qixin (4): block/accounting: Use lock guard macros block/curl: Use lock guard macros block/throttle-groups: Use lock guard macros block/iscsi: Use lock guard macros Kevin Wolf (4): can-host: Fix crash when 'canbus' property is not set block: Simplify qmp_block_resize() error paths block: Fix locking in qmp_block_resize() block: Fix deadlock in bdrv_co_yield_to_drain() Li Feng (1): file-posix: check the use_lock before setting the file lock Max Reitz (21): meson: Detect libfuse fuse: Allow exporting BDSs via FUSE fuse: Implement standard FUSE operations fuse: Allow growable exports fuse: (Partially) implement fallocate() fuse: Implement hole detection through lseek iotests: Do not needlessly filter _make_test_img iotests: Do not pipe _make_test_img iotests: Use convert -n in some cases iotests/046: Avoid renaming images iotests: Derive image names from $TEST_IMG iotests/091: Use _cleanup_qemu instad of "wait" iotests: Restrict some Python tests to file iotests: Let _make_test_img guess $TEST_IMG_FILE iotests/287: Clean up subshell test image storage-daemon: Call bdrv_close_all() on exit iotests: Give access to the qemu-storage-daemon iotests: Allow testing FUSE exports iotests: Enable fuse for many tests iotests/308: Add test for FUSE exports iotests/221: Discard image before qemu-img map Vladimir Sementsov-Ogievskiy (4): block/file-posix: fix workaround in raw_do_pwrite_zeroes() block/io: bdrv_refresh_limits(): use ERRP_GUARD block/io: bdrv_check_byte_request(): drop bdrv_is_inserted() block: introduce BDRV_MAX_LENGTH qapi/block-export.json | 27 +- meson_options.txt | 4 + configure | 13 + include/block/block.h | 10 + include/block/block_int.h | 8 + include/block/fuse.h | 30 ++ block.c | 18 +- block/accounting.c | 32 +- block/curl.c | 28 +- block/export/export.c | 4 + block/export/fuse.c | 726 +++++++++++++++++++++++++++++++++++ block/file-posix.c | 9 +- block/io.c | 110 ++++-- block/iscsi.c | 50 ++- block/throttle-groups.c | 48 ++- blockdev.c | 14 +- net/can/can_host.c | 5 + storage-daemon/qemu-storage-daemon.c | 3 + tests/test-write-threshold.c | 4 + MAINTAINERS | 6 + block/export/meson.build | 2 + meson.build | 26 ++ tests/qemu-iotests/025 | 2 +- tests/qemu-iotests/026 | 2 +- tests/qemu-iotests/028 | 16 +- tests/qemu-iotests/028.out | 3 + tests/qemu-iotests/031 | 2 +- tests/qemu-iotests/034 | 2 +- tests/qemu-iotests/036 | 2 +- tests/qemu-iotests/037 | 2 +- tests/qemu-iotests/038 | 2 +- tests/qemu-iotests/039 | 2 +- tests/qemu-iotests/046 | 7 +- tests/qemu-iotests/046.out | 2 +- tests/qemu-iotests/050 | 2 +- tests/qemu-iotests/054 | 2 +- tests/qemu-iotests/060 | 2 +- tests/qemu-iotests/071 | 21 +- tests/qemu-iotests/079 | 2 +- tests/qemu-iotests/080 | 2 +- tests/qemu-iotests/089 | 5 +- tests/qemu-iotests/089.out | 1 + tests/qemu-iotests/090 | 2 +- tests/qemu-iotests/091 | 5 +- tests/qemu-iotests/095 | 2 +- tests/qemu-iotests/097 | 2 +- tests/qemu-iotests/098 | 2 +- tests/qemu-iotests/102 | 2 +- tests/qemu-iotests/103 | 2 +- tests/qemu-iotests/106 | 2 +- tests/qemu-iotests/107 | 2 +- tests/qemu-iotests/108 | 2 +- tests/qemu-iotests/111 | 2 +- tests/qemu-iotests/112 | 2 +- tests/qemu-iotests/115 | 2 +- tests/qemu-iotests/117 | 2 +- tests/qemu-iotests/120 | 2 +- tests/qemu-iotests/121 | 2 +- tests/qemu-iotests/127 | 2 +- tests/qemu-iotests/133 | 2 +- tests/qemu-iotests/137 | 2 +- tests/qemu-iotests/138 | 2 +- tests/qemu-iotests/140 | 2 +- tests/qemu-iotests/154 | 2 +- tests/qemu-iotests/161 | 14 +- tests/qemu-iotests/171 | 2 +- tests/qemu-iotests/174 | 10 +- tests/qemu-iotests/175 | 8 +- tests/qemu-iotests/176 | 2 +- tests/qemu-iotests/177 | 2 +- tests/qemu-iotests/179 | 2 +- tests/qemu-iotests/183 | 2 +- tests/qemu-iotests/186 | 2 +- tests/qemu-iotests/187 | 2 +- tests/qemu-iotests/191 | 2 +- tests/qemu-iotests/195 | 2 +- tests/qemu-iotests/200 | 5 +- tests/qemu-iotests/200.out | 4 +- tests/qemu-iotests/204 | 2 +- tests/qemu-iotests/206 | 5 +- tests/qemu-iotests/206.out | 6 + tests/qemu-iotests/214 | 2 +- tests/qemu-iotests/217 | 2 +- tests/qemu-iotests/220 | 2 +- tests/qemu-iotests/221 | 9 +- tests/qemu-iotests/221.out | 14 +- tests/qemu-iotests/229 | 5 +- tests/qemu-iotests/229.out | 6 +- tests/qemu-iotests/242 | 3 +- tests/qemu-iotests/247 | 2 +- tests/qemu-iotests/249 | 8 +- tests/qemu-iotests/250 | 2 +- tests/qemu-iotests/252 | 2 +- tests/qemu-iotests/265 | 2 +- tests/qemu-iotests/268 | 2 +- tests/qemu-iotests/272 | 2 +- tests/qemu-iotests/273 | 2 +- tests/qemu-iotests/279 | 2 +- tests/qemu-iotests/286 | 2 +- tests/qemu-iotests/287 | 6 +- tests/qemu-iotests/289 | 2 +- tests/qemu-iotests/290 | 2 +- tests/qemu-iotests/291 | 2 +- tests/qemu-iotests/292 | 2 +- tests/qemu-iotests/293 | 2 +- tests/qemu-iotests/294 | 2 +- tests/qemu-iotests/305 | 2 +- tests/qemu-iotests/308 | 339 ++++++++++++++++ tests/qemu-iotests/308.out | 97 +++++ tests/qemu-iotests/check | 17 + tests/qemu-iotests/common.filter | 5 +- tests/qemu-iotests/common.rc | 181 ++++++++- tests/qemu-iotests/group | 1 + 113 files changed, 1841 insertions(+), 265 deletions(-) create mode 100644 include/block/fuse.h create mode 100644 block/export/fuse.c create mode 100755 tests/qemu-iotests/308 create mode 100644 tests/qemu-iotests/308.out From: Gan Qixin <ganqixin@huawei.com> Replace manual lock()/unlock() calls with lock guard macros (QEMU_LOCK_GUARD/WITH_QEMU_LOCK_GUARD) in block/accounting. Signed-off-by: Gan Qixin <ganqixin@huawei.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20201203075055.127773-2-ganqixin@huawei.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/accounting.c | 32 +++++++++++++++----------------- 1 file changed, 15 insertions(+), 17 deletions(-) diff --git a/block/accounting.c b/block/accounting.c index XXXXXXX..XXXXXXX 100644 --- a/block/accounting.c +++ b/block/accounting.c @@ -XXX,XX +XXX,XX @@ static void block_account_one_io(BlockAcctStats *stats, BlockAcctCookie *cookie, return; } - qemu_mutex_lock(&stats->lock); - - if (failed) { - stats->failed_ops[cookie->type]++; - } else { - stats->nr_bytes[cookie->type] += cookie->bytes; - stats->nr_ops[cookie->type]++; - } + WITH_QEMU_LOCK_GUARD(&stats->lock) { + if (failed) { + stats->failed_ops[cookie->type]++; + } else { + stats->nr_bytes[cookie->type] += cookie->bytes; + stats->nr_ops[cookie->type]++; + } - block_latency_histogram_account(&stats->latency_histogram[cookie->type], - latency_ns); + block_latency_histogram_account(&stats->latency_histogram[cookie->type], + latency_ns); - if (!failed || stats->account_failed) { - stats->total_time_ns[cookie->type] += latency_ns; - stats->last_access_time_ns = time_ns; + if (!failed || stats->account_failed) { + stats->total_time_ns[cookie->type] += latency_ns; + stats->last_access_time_ns = time_ns; - QSLIST_FOREACH(s, &stats->intervals, entries) { - timed_average_account(&s->latency[cookie->type], latency_ns); + QSLIST_FOREACH(s, &stats->intervals, entries) { + timed_average_account(&s->latency[cookie->type], latency_ns); + } } } - qemu_mutex_unlock(&stats->lock); - cookie->type = BLOCK_ACCT_NONE; } -- 2.29.2 From: Gan Qixin <ganqixin@huawei.com> Replace manual lock()/unlock() calls with lock guard macros (QEMU_LOCK_GUARD/WITH_QEMU_LOCK_GUARD) in block/curl. Signed-off-by: Gan Qixin <ganqixin@huawei.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20201203075055.127773-3-ganqixin@huawei.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/curl.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) diff --git a/block/curl.c b/block/curl.c index XXXXXXX..XXXXXXX 100644 --- a/block/curl.c +++ b/block/curl.c @@ -XXX,XX +XXX,XX @@ static void curl_detach_aio_context(BlockDriverState *bs) BDRVCURLState *s = bs->opaque; int i; - qemu_mutex_lock(&s->mutex); - for (i = 0; i < CURL_NUM_STATES; i++) { - if (s->states[i].in_use) { - curl_clean_state(&s->states[i]); + WITH_QEMU_LOCK_GUARD(&s->mutex) { + for (i = 0; i < CURL_NUM_STATES; i++) { + if (s->states[i].in_use) { + curl_clean_state(&s->states[i]); + } + if (s->states[i].curl) { + curl_easy_cleanup(s->states[i].curl); + s->states[i].curl = NULL; + } + g_free(s->states[i].orig_buf); + s->states[i].orig_buf = NULL; } - if (s->states[i].curl) { - curl_easy_cleanup(s->states[i].curl); - s->states[i].curl = NULL; + if (s->multi) { + curl_multi_cleanup(s->multi); + s->multi = NULL; } - g_free(s->states[i].orig_buf); - s->states[i].orig_buf = NULL; - } - if (s->multi) { - curl_multi_cleanup(s->multi); - s->multi = NULL; } - qemu_mutex_unlock(&s->mutex); timer_del(&s->timer); } -- 2.29.2 From: Gan Qixin <ganqixin@huawei.com> Replace manual lock()/unlock() calls with lock guard macros (QEMU_LOCK_GUARD/WITH_QEMU_LOCK_GUARD) in block/throttle-groups. Signed-off-by: Gan Qixin <ganqixin@huawei.com> Message-Id: <20201203075055.127773-4-ganqixin@huawei.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/throttle-groups.c | 48 ++++++++++++++++++++--------------------- 1 file changed, 23 insertions(+), 25 deletions(-) diff --git a/block/throttle-groups.c b/block/throttle-groups.c index XXXXXXX..XXXXXXX 100644 --- a/block/throttle-groups.c +++ b/block/throttle-groups.c @@ -XXX,XX +XXX,XX @@ void throttle_group_register_tgm(ThrottleGroupMember *tgm, tgm->aio_context = ctx; qatomic_set(&tgm->restart_pending, 0); - qemu_mutex_lock(&tg->lock); + QEMU_LOCK_GUARD(&tg->lock); /* If the ThrottleGroup is new set this ThrottleGroupMember as the token */ for (i = 0; i < 2; i++) { if (!tg->tokens[i]) { @@ -XXX,XX +XXX,XX @@ void throttle_group_register_tgm(ThrottleGroupMember *tgm, qemu_co_mutex_init(&tgm->throttled_reqs_lock); qemu_co_queue_init(&tgm->throttled_reqs[0]); qemu_co_queue_init(&tgm->throttled_reqs[1]); - - qemu_mutex_unlock(&tg->lock); } /* Unregister a ThrottleGroupMember from its group, removing it from the list, @@ -XXX,XX +XXX,XX @@ void throttle_group_unregister_tgm(ThrottleGroupMember *tgm) /* Wait for throttle_group_restart_queue_entry() coroutines to finish */ AIO_WAIT_WHILE(tgm->aio_context, qatomic_read(&tgm->restart_pending) > 0); - qemu_mutex_lock(&tg->lock); - for (i = 0; i < 2; i++) { - assert(tgm->pending_reqs[i] == 0); - assert(qemu_co_queue_empty(&tgm->throttled_reqs[i])); - assert(!timer_pending(tgm->throttle_timers.timers[i])); - if (tg->tokens[i] == tgm) { - token = throttle_group_next_tgm(tgm); - /* Take care of the case where this is the last tgm in the group */ - if (token == tgm) { - token = NULL; + WITH_QEMU_LOCK_GUARD(&tg->lock) { + for (i = 0; i < 2; i++) { + assert(tgm->pending_reqs[i] == 0); + assert(qemu_co_queue_empty(&tgm->throttled_reqs[i])); + assert(!timer_pending(tgm->throttle_timers.timers[i])); + if (tg->tokens[i] == tgm) { + token = throttle_group_next_tgm(tgm); + /* Take care of the case where this is the last tgm in the group */ + if (token == tgm) { + token = NULL; + } + tg->tokens[i] = token; } - tg->tokens[i] = token; } - } - /* remove the current tgm from the list */ - QLIST_REMOVE(tgm, round_robin); - throttle_timers_destroy(&tgm->throttle_timers); - qemu_mutex_unlock(&tg->lock); + /* remove the current tgm from the list */ + QLIST_REMOVE(tgm, round_robin); + throttle_timers_destroy(&tgm->throttle_timers); + } throttle_group_unref(&tg->ts); tgm->throttle_state = NULL; @@ -XXX,XX +XXX,XX @@ void throttle_group_detach_aio_context(ThrottleGroupMember *tgm) assert(qemu_co_queue_empty(&tgm->throttled_reqs[1])); /* Kick off next ThrottleGroupMember, if necessary */ - qemu_mutex_lock(&tg->lock); - for (i = 0; i < 2; i++) { - if (timer_pending(tt->timers[i])) { - tg->any_timer_armed[i] = false; - schedule_next_request(tgm, i); + WITH_QEMU_LOCK_GUARD(&tg->lock) { + for (i = 0; i < 2; i++) { + if (timer_pending(tt->timers[i])) { + tg->any_timer_armed[i] = false; + schedule_next_request(tgm, i); + } } } - qemu_mutex_unlock(&tg->lock); throttle_timers_detach_aio_context(tt); tgm->aio_context = NULL; -- 2.29.2 From: Gan Qixin <ganqixin@huawei.com> Replace manual lock()/unlock() calls with lock guard macros (QEMU_LOCK_GUARD/WITH_QEMU_LOCK_GUARD) in block/iscsi. Signed-off-by: Gan Qixin <ganqixin@huawei.com> Message-Id: <20201203075055.127773-5-ganqixin@huawei.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/iscsi.c | 50 ++++++++++++++++++++++++-------------------------- 1 file changed, 24 insertions(+), 26 deletions(-) diff --git a/block/iscsi.c b/block/iscsi.c index XXXXXXX..XXXXXXX 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -XXX,XX +XXX,XX @@ iscsi_aio_cancel(BlockAIOCB *blockacb) IscsiAIOCB *acb = (IscsiAIOCB *)blockacb; IscsiLun *iscsilun = acb->iscsilun; - qemu_mutex_lock(&iscsilun->mutex); + WITH_QEMU_LOCK_GUARD(&iscsilun->mutex) { - /* If it was cancelled or completed already, our work is done here */ - if (acb->cancelled || acb->status != -EINPROGRESS) { - qemu_mutex_unlock(&iscsilun->mutex); - return; - } + /* If it was cancelled or completed already, our work is done here */ + if (acb->cancelled || acb->status != -EINPROGRESS) { + return; + } - acb->cancelled = true; + acb->cancelled = true; - qemu_aio_ref(acb); /* released in iscsi_abort_task_cb() */ + qemu_aio_ref(acb); /* released in iscsi_abort_task_cb() */ - /* send a task mgmt call to the target to cancel the task on the target */ - if (iscsi_task_mgmt_abort_task_async(iscsilun->iscsi, acb->task, - iscsi_abort_task_cb, acb) < 0) { - qemu_aio_unref(acb); /* since iscsi_abort_task_cb() won't be called */ + /* send a task mgmt call to the target to cancel the task on the target */ + if (iscsi_task_mgmt_abort_task_async(iscsilun->iscsi, acb->task, + iscsi_abort_task_cb, acb) < 0) { + qemu_aio_unref(acb); /* since iscsi_abort_task_cb() won't be called */ + } } - - qemu_mutex_unlock(&iscsilun->mutex); } static const AIOCBInfo iscsi_aiocb_info = { @@ -XXX,XX +XXX,XX @@ static void iscsi_timed_check_events(void *opaque) { IscsiLun *iscsilun = opaque; - qemu_mutex_lock(&iscsilun->mutex); + WITH_QEMU_LOCK_GUARD(&iscsilun->mutex) { + /* check for timed out requests */ + iscsi_service(iscsilun->iscsi, 0); - /* check for timed out requests */ - iscsi_service(iscsilun->iscsi, 0); + if (iscsilun->request_timed_out) { + iscsilun->request_timed_out = false; + iscsi_reconnect(iscsilun->iscsi); + } - if (iscsilun->request_timed_out) { - iscsilun->request_timed_out = false; - iscsi_reconnect(iscsilun->iscsi); + /* + * newer versions of libiscsi may return zero events. Ensure we are + * able to return to service once this situation changes. + */ + iscsi_set_events(iscsilun); } - /* newer versions of libiscsi may return zero events. Ensure we are able - * to return to service once this situation changes. */ - iscsi_set_events(iscsilun); - - qemu_mutex_unlock(&iscsilun->mutex); - timer_mod(iscsilun->event_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + EVENT_INTERVAL); } -- 2.29.2 From: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201027190600.192171-2-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- meson_options.txt | 2 ++ configure | 7 +++++++ meson.build | 6 ++++++ 3 files changed, 15 insertions(+) diff --git a/meson_options.txt b/meson_options.txt index XXXXXXX..XXXXXXX 100644 --- a/meson_options.txt +++ b/meson_options.txt @@ -XXX,XX +XXX,XX @@ option('virtiofsd', type: 'feature', value: 'auto', description: 'build virtiofs daemon (virtiofsd)') option('vhost_user_blk_server', type: 'feature', value: 'auto', description: 'build vhost-user-blk server') +option('fuse', type: 'feature', value: 'auto', + description: 'FUSE block device export') option('capstone', type: 'combo', value: 'auto', choices: ['disabled', 'enabled', 'auto', 'system', 'internal'], diff --git a/configure b/configure index XXXXXXX..XXXXXXX 100755 --- a/configure +++ b/configure @@ -XXX,XX +XXX,XX @@ meson="" ninja="" skip_meson=no gettext="" +fuse="auto" bogus_os="no" malloc_trim="auto" @@ -XXX,XX +XXX,XX @@ for opt do ;; --disable-libdaxctl) libdaxctl=no ;; + --enable-fuse) fuse="enabled" + ;; + --disable-fuse) fuse="disabled" + ;; *) echo "ERROR: unknown option $opt" echo "Try '$0 --help' for more information" @@ -XXX,XX +XXX,XX @@ disabled with --disable-FEATURE, default is enabled if available: xkbcommon xkbcommon support rng-none dummy RNG, avoid using /dev/(u)random and getrandom() libdaxctl libdaxctl support + fuse FUSE block device export NOTE: The object files are built at the place where configure is launched EOF @@ -XXX,XX +XXX,XX @@ NINJA=$ninja $meson setup \ -Diconv=$iconv -Dcurses=$curses -Dlibudev=$libudev\ -Ddocs=$docs -Dsphinx_build=$sphinx_build -Dinstall_blobs=$blobs \ -Dvhost_user_blk_server=$vhost_user_blk_server \ + -Dfuse=$fuse \ $cross_arg \ "$PWD" "$source_path" diff --git a/meson.build b/meson.build index XXXXXXX..XXXXXXX 100644 --- a/meson.build +++ b/meson.build @@ -XXX,XX +XXX,XX @@ elif get_option('vhost_user_blk_server').disabled() or not have_system have_vhost_user_blk_server = false endif +fuse = dependency('fuse3', required: get_option('fuse'), + version: '>=3.1', method: 'pkg-config', + static: enable_static) + ################# # config-host.h # ################# @@ -XXX,XX +XXX,XX @@ config_host_data.set('CONFIG_KEYUTILS', keyutils.found()) config_host_data.set('CONFIG_GETTID', has_gettid) config_host_data.set('CONFIG_MALLOC_TRIM', has_malloc_trim) config_host_data.set('CONFIG_STATX', has_statx) +config_host_data.set('CONFIG_FUSE', fuse.found()) config_host_data.set('QEMU_VERSION', '"@0@"'.format(meson.project_version())) config_host_data.set('QEMU_VERSION_MAJOR', meson.project_version().split('.')[0]) config_host_data.set('QEMU_VERSION_MINOR', meson.project_version().split('.')[1]) @@ -XXX,XX +XXX,XX @@ endif summary_info += {'thread sanitizer': config_host.has_key('CONFIG_TSAN')} summary_info += {'rng-none': config_host.has_key('CONFIG_RNG_NONE')} summary_info += {'Linux keyring': config_host.has_key('CONFIG_SECRET_KEYRING')} +summary_info += {'FUSE exports': fuse.found()} summary(summary_info, bool_yn: true) if not supported_cpus.contains(cpu) -- 2.29.2 From: Max Reitz <mreitz@redhat.com> block-export-add type=fuse allows mounting block graph nodes via FUSE on some existing regular file. That file should then appears like a raw disk image, and accesses to it result in accesses to the exported BDS. Right now, we only implement the necessary block export functions to set it up and shut it down. We do not implement any access functions, so accessing the mount point only results in errors. This will be addressed by a followup patch. We keep a hash table of exported mount points, because we want to be able to detect when users try to use a mount point twice. This is because we invoke stat() to check whether the given mount point is a regular file, but if that file is served by ourselves (because it is already used as a mount point), then this stat() would have to be served by ourselves, too, which is impossible to do while we (as the caller) are waiting for it to settle. Therefore, keep track of mount point paths to at least catch the most obvious instances of that problem. Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201027190600.192171-3-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- qapi/block-export.json | 23 ++- include/block/fuse.h | 30 ++++ block.c | 1 + block/export/export.c | 4 + block/export/fuse.c | 295 +++++++++++++++++++++++++++++++++++++++ MAINTAINERS | 6 + block/export/meson.build | 2 + 7 files changed, 359 insertions(+), 2 deletions(-) create mode 100644 include/block/fuse.h create mode 100644 block/export/fuse.c diff --git a/qapi/block-export.json b/qapi/block-export.json index XXXXXXX..XXXXXXX 100644 --- a/qapi/block-export.json +++ b/qapi/block-export.json @@ -XXX,XX +XXX,XX @@ '*logical-block-size': 'size', '*num-queues': 'uint16'} } +## +# @BlockExportOptionsFuse: +# +# Options for exporting a block graph node on some (file) mountpoint +# as a raw image. +# +# @mountpoint: Path on which to export the block device via FUSE. +# This must point to an existing regular file. +# +# Since: 6.0 +## +{ 'struct': 'BlockExportOptionsFuse', + 'data': { 'mountpoint': 'str' }, + 'if': 'defined(CONFIG_FUSE)' } + ## # @NbdServerAddOptions: # @@ -XXX,XX +XXX,XX @@ # # @nbd: NBD export # @vhost-user-blk: vhost-user-blk export (since 5.2) +# @fuse: FUSE export (since: 6.0) # # Since: 4.2 ## { 'enum': 'BlockExportType', - 'data': [ 'nbd', 'vhost-user-blk' ] } + 'data': [ 'nbd', 'vhost-user-blk', + { 'name': 'fuse', 'if': 'defined(CONFIG_FUSE)' } ] } ## # @BlockExportOptions: @@ -XXX,XX +XXX,XX @@ 'discriminator': 'type', 'data': { 'nbd': 'BlockExportOptionsNbd', - 'vhost-user-blk': 'BlockExportOptionsVhostUserBlk' + 'vhost-user-blk': 'BlockExportOptionsVhostUserBlk', + 'fuse': { 'type': 'BlockExportOptionsFuse', + 'if': 'defined(CONFIG_FUSE)' } } } ## diff --git a/include/block/fuse.h b/include/block/fuse.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/include/block/fuse.h @@ -XXX,XX +XXX,XX @@ +/* + * Present a block device as a raw image through FUSE + * + * Copyright (c) 2020 Max Reitz <mreitz@redhat.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; under version 2 or later of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef BLOCK_FUSE_H +#define BLOCK_FUSE_H + +#ifdef CONFIG_FUSE + +#include "block/export.h" + +extern const BlockExportDriver blk_exp_fuse; + +#endif /* CONFIG_FUSE */ + +#endif diff --git a/block.c b/block.c index XXXXXXX..XXXXXXX 100644 --- a/block.c +++ b/block.c @@ -XXX,XX +XXX,XX @@ #include "block/trace.h" #include "block/block_int.h" #include "block/blockjob.h" +#include "block/fuse.h" #include "block/nbd.h" #include "block/qdict.h" #include "qemu/error-report.h" diff --git a/block/export/export.c b/block/export/export.c index XXXXXXX..XXXXXXX 100644 --- a/block/export/export.c +++ b/block/export/export.c @@ -XXX,XX +XXX,XX @@ #include "sysemu/block-backend.h" #include "sysemu/iothread.h" #include "block/export.h" +#include "block/fuse.h" #include "block/nbd.h" #include "qapi/error.h" #include "qapi/qapi-commands-block-export.h" @@ -XXX,XX +XXX,XX @@ static const BlockExportDriver *blk_exp_drivers[] = { #ifdef CONFIG_VHOST_USER_BLK_SERVER &blk_exp_vhost_user_blk, #endif +#ifdef CONFIG_FUSE + &blk_exp_fuse, +#endif }; /* Only accessed from the main thread */ diff --git a/block/export/fuse.c b/block/export/fuse.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/block/export/fuse.c @@ -XXX,XX +XXX,XX @@ +/* + * Present a block device as a raw image through FUSE + * + * Copyright (c) 2020 Max Reitz <mreitz@redhat.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; under version 2 or later of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#define FUSE_USE_VERSION 31 + +#include "qemu/osdep.h" +#include "block/aio.h" +#include "block/block.h" +#include "block/export.h" +#include "block/fuse.h" +#include "block/qapi.h" +#include "qapi/error.h" +#include "qapi/qapi-commands-block.h" +#include "sysemu/block-backend.h" + +#include <fuse.h> +#include <fuse_lowlevel.h> + + +/* Prevent overly long bounce buffer allocations */ +#define FUSE_MAX_BOUNCE_BYTES (MIN(BDRV_REQUEST_MAX_BYTES, 64 * 1024 * 1024)) + + +typedef struct FuseExport { + BlockExport common; + + struct fuse_session *fuse_session; + struct fuse_buf fuse_buf; + bool mounted, fd_handler_set_up; + + char *mountpoint; + bool writable; +} FuseExport; + +static GHashTable *exports; +static const struct fuse_lowlevel_ops fuse_ops; + +static void fuse_export_shutdown(BlockExport *exp); +static void fuse_export_delete(BlockExport *exp); + +static void init_exports_table(void); + +static int setup_fuse_export(FuseExport *exp, const char *mountpoint, + Error **errp); +static void read_from_fuse_export(void *opaque); + +static bool is_regular_file(const char *path, Error **errp); + + +static int fuse_export_create(BlockExport *blk_exp, + BlockExportOptions *blk_exp_args, + Error **errp) +{ + FuseExport *exp = container_of(blk_exp, FuseExport, common); + BlockExportOptionsFuse *args = &blk_exp_args->u.fuse; + int ret; + + assert(blk_exp_args->type == BLOCK_EXPORT_TYPE_FUSE); + + init_exports_table(); + + /* + * It is important to do this check before calling is_regular_file() -- + * that function will do a stat(), which we would have to handle if we + * already exported something on @mountpoint. But we cannot, because + * we are currently caught up here. + * (Note that ideally we would want to resolve relative paths here, + * but bdrv_make_absolute_filename() might do the wrong thing for + * paths that contain colons, and realpath() would resolve symlinks, + * which we do not want: The mount point is not going to be the + * symlink's destination, but the link itself.) + * So this will not catch all potential clashes, but hopefully at + * least the most common one of specifying exactly the same path + * string twice. + */ + if (g_hash_table_contains(exports, args->mountpoint)) { + error_setg(errp, "There already is a FUSE export on '%s'", + args->mountpoint); + ret = -EEXIST; + goto fail; + } + + if (!is_regular_file(args->mountpoint, errp)) { + ret = -EINVAL; + goto fail; + } + + exp->mountpoint = g_strdup(args->mountpoint); + exp->writable = blk_exp_args->writable; + + ret = setup_fuse_export(exp, args->mountpoint, errp); + if (ret < 0) { + goto fail; + } + + return 0; + +fail: + fuse_export_delete(blk_exp); + return ret; +} + +/** + * Allocates the global @exports hash table. + */ +static void init_exports_table(void) +{ + if (exports) { + return; + } + + exports = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, NULL); +} + +/** + * Create exp->fuse_session and mount it. + */ +static int setup_fuse_export(FuseExport *exp, const char *mountpoint, + Error **errp) +{ + const char *fuse_argv[4]; + char *mount_opts; + struct fuse_args fuse_args; + int ret; + + /* Needs to match what fuse_init() sets. Only max_read must be supplied. */ + mount_opts = g_strdup_printf("max_read=%zu", FUSE_MAX_BOUNCE_BYTES); + + fuse_argv[0] = ""; /* Dummy program name */ + fuse_argv[1] = "-o"; + fuse_argv[2] = mount_opts; + fuse_argv[3] = NULL; + fuse_args = (struct fuse_args)FUSE_ARGS_INIT(3, (char **)fuse_argv); + + exp->fuse_session = fuse_session_new(&fuse_args, &fuse_ops, + sizeof(fuse_ops), exp); + g_free(mount_opts); + if (!exp->fuse_session) { + error_setg(errp, "Failed to set up FUSE session"); + ret = -EIO; + goto fail; + } + + ret = fuse_session_mount(exp->fuse_session, mountpoint); + if (ret < 0) { + error_setg(errp, "Failed to mount FUSE session to export"); + ret = -EIO; + goto fail; + } + exp->mounted = true; + + g_hash_table_insert(exports, g_strdup(mountpoint), NULL); + + aio_set_fd_handler(exp->common.ctx, + fuse_session_fd(exp->fuse_session), true, + read_from_fuse_export, NULL, NULL, exp); + exp->fd_handler_set_up = true; + + return 0; + +fail: + fuse_export_shutdown(&exp->common); + return ret; +} + +/** + * Callback to be invoked when the FUSE session FD can be read from. + * (This is basically the FUSE event loop.) + */ +static void read_from_fuse_export(void *opaque) +{ + FuseExport *exp = opaque; + int ret; + + blk_exp_ref(&exp->common); + + do { + ret = fuse_session_receive_buf(exp->fuse_session, &exp->fuse_buf); + } while (ret == -EINTR); + if (ret < 0) { + goto out; + } + + fuse_session_process_buf(exp->fuse_session, &exp->fuse_buf); + +out: + blk_exp_unref(&exp->common); +} + +static void fuse_export_shutdown(BlockExport *blk_exp) +{ + FuseExport *exp = container_of(blk_exp, FuseExport, common); + + if (exp->fuse_session) { + fuse_session_exit(exp->fuse_session); + + if (exp->fd_handler_set_up) { + aio_set_fd_handler(exp->common.ctx, + fuse_session_fd(exp->fuse_session), true, + NULL, NULL, NULL, NULL); + exp->fd_handler_set_up = false; + } + } + + if (exp->mountpoint) { + /* + * Safe to drop now, because we will not handle any requests + * for this export anymore anyway. + */ + g_hash_table_remove(exports, exp->mountpoint); + } +} + +static void fuse_export_delete(BlockExport *blk_exp) +{ + FuseExport *exp = container_of(blk_exp, FuseExport, common); + + if (exp->fuse_session) { + if (exp->mounted) { + fuse_session_unmount(exp->fuse_session); + } + + fuse_session_destroy(exp->fuse_session); + } + + free(exp->fuse_buf.mem); + g_free(exp->mountpoint); +} + +/** + * Check whether @path points to a regular file. If not, put an + * appropriate message into *errp. + */ +static bool is_regular_file(const char *path, Error **errp) +{ + struct stat statbuf; + int ret; + + ret = stat(path, &statbuf); + if (ret < 0) { + error_setg_errno(errp, errno, "Failed to stat '%s'", path); + return false; + } + + if (!S_ISREG(statbuf.st_mode)) { + error_setg(errp, "'%s' is not a regular file", path); + return false; + } + + return true; +} + +/** + * A chance to set change some parameters supplied to FUSE_INIT. + */ +static void fuse_init(void *userdata, struct fuse_conn_info *conn) +{ + /* + * MIN_NON_ZERO() would not be wrong here, but what we set here + * must equal what has been passed to fuse_session_new(). + * Therefore, as long as max_read must be passed as a mount option + * (which libfuse claims will be changed at some point), we have + * to set max_read to a fixed value here. + */ + conn->max_read = FUSE_MAX_BOUNCE_BYTES; + + conn->max_write = MIN_NON_ZERO(BDRV_REQUEST_MAX_BYTES, conn->max_write); +} + +static const struct fuse_lowlevel_ops fuse_ops = { + .init = fuse_init, +}; + +const BlockExportDriver blk_exp_fuse = { + .type = BLOCK_EXPORT_TYPE_FUSE, + .instance_size = sizeof(FuseExport), + .create = fuse_export_create, + .delete = fuse_export_delete, + .request_shutdown = fuse_export_shutdown, +}; diff --git a/MAINTAINERS b/MAINTAINERS index XXXXXXX..XXXXXXX 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -XXX,XX +XXX,XX @@ F: include/qemu/vhost-user-server.h F: tests/qtest/libqos/vhost-user-blk.c F: util/vhost-user-server.c +FUSE block device exports +M: Max Reitz <mreitz@redhat.com> +L: qemu-block@nongnu.org +S: Supported +F: block/export/fuse.c + Replication M: Wen Congyang <wencongyang2@huawei.com> M: Xie Changlong <xiechanglong.d@gmail.com> diff --git a/block/export/meson.build b/block/export/meson.build index XXXXXXX..XXXXXXX 100644 --- a/block/export/meson.build +++ b/block/export/meson.build @@ -XXX,XX +XXX,XX @@ blockdev_ss.add(files('export.c')) if have_vhost_user_blk_server blockdev_ss.add(files('vhost-user-blk-server.c')) endif + +blockdev_ss.add(when: fuse, if_true: files('fuse.c')) -- 2.29.2 From: Max Reitz <mreitz@redhat.com> This makes the export actually useful instead of only producing errors whenever it is accessed. Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201027190600.192171-4-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/export/fuse.c | 242 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 242 insertions(+) diff --git a/block/export/fuse.c b/block/export/fuse.c index XXXXXXX..XXXXXXX 100644 --- a/block/export/fuse.c +++ b/block/export/fuse.c @@ -XXX,XX +XXX,XX @@ static void fuse_init(void *userdata, struct fuse_conn_info *conn) conn->max_write = MIN_NON_ZERO(BDRV_REQUEST_MAX_BYTES, conn->max_write); } +/** + * Let clients look up files. Always return ENOENT because we only + * care about the mountpoint itself. + */ +static void fuse_lookup(fuse_req_t req, fuse_ino_t parent, const char *name) +{ + fuse_reply_err(req, ENOENT); +} + +/** + * Let clients get file attributes (i.e., stat() the file). + */ +static void fuse_getattr(fuse_req_t req, fuse_ino_t inode, + struct fuse_file_info *fi) +{ + struct stat statbuf; + int64_t length, allocated_blocks; + time_t now = time(NULL); + FuseExport *exp = fuse_req_userdata(req); + mode_t mode; + + length = blk_getlength(exp->common.blk); + if (length < 0) { + fuse_reply_err(req, -length); + return; + } + + allocated_blocks = bdrv_get_allocated_file_size(blk_bs(exp->common.blk)); + if (allocated_blocks <= 0) { + allocated_blocks = DIV_ROUND_UP(length, 512); + } else { + allocated_blocks = DIV_ROUND_UP(allocated_blocks, 512); + } + + mode = S_IFREG | S_IRUSR; + if (exp->writable) { + mode |= S_IWUSR; + } + + statbuf = (struct stat) { + .st_ino = inode, + .st_mode = mode, + .st_nlink = 1, + .st_uid = getuid(), + .st_gid = getgid(), + .st_size = length, + .st_blksize = blk_bs(exp->common.blk)->bl.request_alignment, + .st_blocks = allocated_blocks, + .st_atime = now, + .st_mtime = now, + .st_ctime = now, + }; + + fuse_reply_attr(req, &statbuf, 1.); +} + +static int fuse_do_truncate(const FuseExport *exp, int64_t size, + bool req_zero_write, PreallocMode prealloc) +{ + uint64_t blk_perm, blk_shared_perm; + BdrvRequestFlags truncate_flags = 0; + int ret; + + if (req_zero_write) { + truncate_flags |= BDRV_REQ_ZERO_WRITE; + } + + blk_get_perm(exp->common.blk, &blk_perm, &blk_shared_perm); + + ret = blk_set_perm(exp->common.blk, blk_perm | BLK_PERM_RESIZE, + blk_shared_perm, NULL); + if (ret < 0) { + return ret; + } + + ret = blk_truncate(exp->common.blk, size, true, prealloc, + truncate_flags, NULL); + + /* Must succeed, because we are only giving up the RESIZE permission */ + blk_set_perm(exp->common.blk, blk_perm, blk_shared_perm, &error_abort); + + return ret; +} + +/** + * Let clients set file attributes. Only resizing is supported. + */ +static void fuse_setattr(fuse_req_t req, fuse_ino_t inode, struct stat *statbuf, + int to_set, struct fuse_file_info *fi) +{ + FuseExport *exp = fuse_req_userdata(req); + int ret; + + if (!exp->writable) { + fuse_reply_err(req, EACCES); + return; + } + + if (to_set & ~FUSE_SET_ATTR_SIZE) { + fuse_reply_err(req, ENOTSUP); + return; + } + + ret = fuse_do_truncate(exp, statbuf->st_size, true, PREALLOC_MODE_OFF); + if (ret < 0) { + fuse_reply_err(req, -ret); + return; + } + + fuse_getattr(req, inode, fi); +} + +/** + * Let clients open a file (i.e., the exported image). + */ +static void fuse_open(fuse_req_t req, fuse_ino_t inode, + struct fuse_file_info *fi) +{ + fuse_reply_open(req, fi); +} + +/** + * Handle client reads from the exported image. + */ +static void fuse_read(fuse_req_t req, fuse_ino_t inode, + size_t size, off_t offset, struct fuse_file_info *fi) +{ + FuseExport *exp = fuse_req_userdata(req); + int64_t length; + void *buf; + int ret; + + /* Limited by max_read, should not happen */ + if (size > FUSE_MAX_BOUNCE_BYTES) { + fuse_reply_err(req, EINVAL); + return; + } + + /** + * Clients will expect short reads at EOF, so we have to limit + * offset+size to the image length. + */ + length = blk_getlength(exp->common.blk); + if (length < 0) { + fuse_reply_err(req, -length); + return; + } + + if (offset + size > length) { + size = length - offset; + } + + buf = qemu_try_blockalign(blk_bs(exp->common.blk), size); + if (!buf) { + fuse_reply_err(req, ENOMEM); + return; + } + + ret = blk_pread(exp->common.blk, offset, buf, size); + if (ret >= 0) { + fuse_reply_buf(req, buf, size); + } else { + fuse_reply_err(req, -ret); + } + + qemu_vfree(buf); +} + +/** + * Handle client writes to the exported image. + */ +static void fuse_write(fuse_req_t req, fuse_ino_t inode, const char *buf, + size_t size, off_t offset, struct fuse_file_info *fi) +{ + FuseExport *exp = fuse_req_userdata(req); + int64_t length; + int ret; + + /* Limited by max_write, should not happen */ + if (size > BDRV_REQUEST_MAX_BYTES) { + fuse_reply_err(req, EINVAL); + return; + } + + if (!exp->writable) { + fuse_reply_err(req, EACCES); + return; + } + + /** + * Clients will expect short writes at EOF, so we have to limit + * offset+size to the image length. + */ + length = blk_getlength(exp->common.blk); + if (length < 0) { + fuse_reply_err(req, -length); + return; + } + + if (offset + size > length) { + size = length - offset; + } + + ret = blk_pwrite(exp->common.blk, offset, buf, size, 0); + if (ret >= 0) { + fuse_reply_write(req, size); + } else { + fuse_reply_err(req, -ret); + } +} + +/** + * Let clients fsync the exported image. + */ +static void fuse_fsync(fuse_req_t req, fuse_ino_t inode, int datasync, + struct fuse_file_info *fi) +{ + FuseExport *exp = fuse_req_userdata(req); + int ret; + + ret = blk_flush(exp->common.blk); + fuse_reply_err(req, ret < 0 ? -ret : 0); +} + +/** + * Called before an FD to the exported image is closed. (libfuse + * notes this to be a way to return last-minute errors.) + */ +static void fuse_flush(fuse_req_t req, fuse_ino_t inode, + struct fuse_file_info *fi) +{ + fuse_fsync(req, inode, 1, fi); +} + static const struct fuse_lowlevel_ops fuse_ops = { .init = fuse_init, + .lookup = fuse_lookup, + .getattr = fuse_getattr, + .setattr = fuse_setattr, + .open = fuse_open, + .read = fuse_read, + .write = fuse_write, + .flush = fuse_flush, + .fsync = fuse_fsync, }; const BlockExportDriver blk_exp_fuse = { -- 2.29.2 From: Max Reitz <mreitz@redhat.com> These will behave more like normal files in that writes beyond the EOF will automatically grow the export size. As an optimization, keep the RESIZE permission for growable exports so we do not have to take it for every post-EOF write. (This permission is not released when the export is destroyed, because at that point the BlockBackend is destroyed altogether anyway.) Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201027190600.192171-5-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- qapi/block-export.json | 6 +++++- block/export/fuse.c | 44 ++++++++++++++++++++++++++++++++++-------- 2 files changed, 41 insertions(+), 9 deletions(-) diff --git a/qapi/block-export.json b/qapi/block-export.json index XXXXXXX..XXXXXXX 100644 --- a/qapi/block-export.json +++ b/qapi/block-export.json @@ -XXX,XX +XXX,XX @@ # @mountpoint: Path on which to export the block device via FUSE. # This must point to an existing regular file. # +# @growable: Whether writes beyond the EOF should grow the block node +# accordingly. (default: false) +# # Since: 6.0 ## { 'struct': 'BlockExportOptionsFuse', - 'data': { 'mountpoint': 'str' }, + 'data': { 'mountpoint': 'str', + '*growable': 'bool' }, 'if': 'defined(CONFIG_FUSE)' } ## diff --git a/block/export/fuse.c b/block/export/fuse.c index XXXXXXX..XXXXXXX 100644 --- a/block/export/fuse.c +++ b/block/export/fuse.c @@ -XXX,XX +XXX,XX @@ typedef struct FuseExport { char *mountpoint; bool writable; + bool growable; } FuseExport; static GHashTable *exports; @@ -XXX,XX +XXX,XX @@ static int fuse_export_create(BlockExport *blk_exp, assert(blk_exp_args->type == BLOCK_EXPORT_TYPE_FUSE); + /* For growable exports, take the RESIZE permission */ + if (args->growable) { + uint64_t blk_perm, blk_shared_perm; + + blk_get_perm(exp->common.blk, &blk_perm, &blk_shared_perm); + + ret = blk_set_perm(exp->common.blk, blk_perm | BLK_PERM_RESIZE, + blk_shared_perm, errp); + if (ret < 0) { + return ret; + } + } + init_exports_table(); /* @@ -XXX,XX +XXX,XX @@ static int fuse_export_create(BlockExport *blk_exp, exp->mountpoint = g_strdup(args->mountpoint); exp->writable = blk_exp_args->writable; + exp->growable = args->growable; ret = setup_fuse_export(exp, args->mountpoint, errp); if (ret < 0) { @@ -XXX,XX +XXX,XX @@ static int fuse_do_truncate(const FuseExport *exp, int64_t size, truncate_flags |= BDRV_REQ_ZERO_WRITE; } - blk_get_perm(exp->common.blk, &blk_perm, &blk_shared_perm); + /* Growable exports have a permanent RESIZE permission */ + if (!exp->growable) { + blk_get_perm(exp->common.blk, &blk_perm, &blk_shared_perm); - ret = blk_set_perm(exp->common.blk, blk_perm | BLK_PERM_RESIZE, - blk_shared_perm, NULL); - if (ret < 0) { - return ret; + ret = blk_set_perm(exp->common.blk, blk_perm | BLK_PERM_RESIZE, + blk_shared_perm, NULL); + if (ret < 0) { + return ret; + } } ret = blk_truncate(exp->common.blk, size, true, prealloc, truncate_flags, NULL); - /* Must succeed, because we are only giving up the RESIZE permission */ - blk_set_perm(exp->common.blk, blk_perm, blk_shared_perm, &error_abort); + if (!exp->growable) { + /* Must succeed, because we are only giving up the RESIZE permission */ + blk_set_perm(exp->common.blk, blk_perm, blk_shared_perm, &error_abort); + } return ret; } @@ -XXX,XX +XXX,XX @@ static void fuse_write(fuse_req_t req, fuse_ino_t inode, const char *buf, } if (offset + size > length) { - size = length - offset; + if (exp->growable) { + ret = fuse_do_truncate(exp, offset + size, true, PREALLOC_MODE_OFF); + if (ret < 0) { + fuse_reply_err(req, -ret); + return; + } + } else { + size = length - offset; + } } ret = blk_pwrite(exp->common.blk, offset, buf, size, 0); -- 2.29.2 From: Max Reitz <mreitz@redhat.com> This allows allocating areas after the (old) EOF as part of a growing resize, writing zeroes, and discarding. Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201027190600.192171-6-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/export/fuse.c | 84 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) diff --git a/block/export/fuse.c b/block/export/fuse.c index XXXXXXX..XXXXXXX 100644 --- a/block/export/fuse.c +++ b/block/export/fuse.c @@ -XXX,XX +XXX,XX @@ static void fuse_write(fuse_req_t req, fuse_ino_t inode, const char *buf, } } +/** + * Let clients perform various fallocate() operations. + */ +static void fuse_fallocate(fuse_req_t req, fuse_ino_t inode, int mode, + off_t offset, off_t length, + struct fuse_file_info *fi) +{ + FuseExport *exp = fuse_req_userdata(req); + int64_t blk_len; + int ret; + + if (!exp->writable) { + fuse_reply_err(req, EACCES); + return; + } + + blk_len = blk_getlength(exp->common.blk); + if (blk_len < 0) { + fuse_reply_err(req, -blk_len); + return; + } + + if (mode & FALLOC_FL_KEEP_SIZE) { + length = MIN(length, blk_len - offset); + } + + if (mode & FALLOC_FL_PUNCH_HOLE) { + if (!(mode & FALLOC_FL_KEEP_SIZE)) { + fuse_reply_err(req, EINVAL); + return; + } + + do { + int size = MIN(length, BDRV_REQUEST_MAX_BYTES); + + ret = blk_pdiscard(exp->common.blk, offset, size); + offset += size; + length -= size; + } while (ret == 0 && length > 0); + } else if (mode & FALLOC_FL_ZERO_RANGE) { + if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + length > blk_len) { + /* No need for zeroes, we are going to write them ourselves */ + ret = fuse_do_truncate(exp, offset + length, false, + PREALLOC_MODE_OFF); + if (ret < 0) { + fuse_reply_err(req, -ret); + return; + } + } + + do { + int size = MIN(length, BDRV_REQUEST_MAX_BYTES); + + ret = blk_pwrite_zeroes(exp->common.blk, + offset, size, 0); + offset += size; + length -= size; + } while (ret == 0 && length > 0); + } else if (!mode) { + /* We can only fallocate at the EOF with a truncate */ + if (offset < blk_len) { + fuse_reply_err(req, EOPNOTSUPP); + return; + } + + if (offset > blk_len) { + /* No preallocation needed here */ + ret = fuse_do_truncate(exp, offset, true, PREALLOC_MODE_OFF); + if (ret < 0) { + fuse_reply_err(req, -ret); + return; + } + } + + ret = fuse_do_truncate(exp, offset + length, true, + PREALLOC_MODE_FALLOC); + } else { + ret = -EOPNOTSUPP; + } + + fuse_reply_err(req, ret < 0 ? -ret : 0); +} + /** * Let clients fsync the exported image. */ @@ -XXX,XX +XXX,XX @@ static const struct fuse_lowlevel_ops fuse_ops = { .open = fuse_open, .read = fuse_read, .write = fuse_write, + .fallocate = fuse_fallocate, .flush = fuse_flush, .fsync = fuse_fsync, }; -- 2.29.2 From: Max Reitz <mreitz@redhat.com> This is a relatively new feature in libfuse (available since 3.8.0, which was released in November 2019), so we have to add a dedicated check whether it is available before making use of it. Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201027190600.192171-7-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- meson_options.txt | 2 ++ configure | 8 ++++- block/export/fuse.c | 77 +++++++++++++++++++++++++++++++++++++++++++++ meson.build | 20 ++++++++++++ 4 files changed, 106 insertions(+), 1 deletion(-) diff --git a/meson_options.txt b/meson_options.txt index XXXXXXX..XXXXXXX 100644 --- a/meson_options.txt +++ b/meson_options.txt @@ -XXX,XX +XXX,XX @@ option('vhost_user_blk_server', type: 'feature', value: 'auto', description: 'build vhost-user-blk server') option('fuse', type: 'feature', value: 'auto', description: 'FUSE block device export') +option('fuse_lseek', type : 'feature', value : 'auto', + description: 'SEEK_HOLE/SEEK_DATA support for FUSE exports') option('capstone', type: 'combo', value: 'auto', choices: ['disabled', 'enabled', 'auto', 'system', 'internal'], diff --git a/configure b/configure index XXXXXXX..XXXXXXX 100755 --- a/configure +++ b/configure @@ -XXX,XX +XXX,XX @@ ninja="" skip_meson=no gettext="" fuse="auto" +fuse_lseek="auto" bogus_os="no" malloc_trim="auto" @@ -XXX,XX +XXX,XX @@ for opt do ;; --disable-fuse) fuse="disabled" ;; + --enable-fuse-lseek) fuse_lseek="enabled" + ;; + --disable-fuse-lseek) fuse_lseek="disabled" + ;; *) echo "ERROR: unknown option $opt" echo "Try '$0 --help' for more information" @@ -XXX,XX +XXX,XX @@ disabled with --disable-FEATURE, default is enabled if available: rng-none dummy RNG, avoid using /dev/(u)random and getrandom() libdaxctl libdaxctl support fuse FUSE block device export + fuse-lseek SEEK_HOLE/SEEK_DATA support for FUSE exports NOTE: The object files are built at the place where configure is launched EOF @@ -XXX,XX +XXX,XX @@ NINJA=$ninja $meson setup \ -Diconv=$iconv -Dcurses=$curses -Dlibudev=$libudev\ -Ddocs=$docs -Dsphinx_build=$sphinx_build -Dinstall_blobs=$blobs \ -Dvhost_user_blk_server=$vhost_user_blk_server \ - -Dfuse=$fuse \ + -Dfuse=$fuse -Dfuse_lseek=$fuse_lseek \ $cross_arg \ "$PWD" "$source_path" diff --git a/block/export/fuse.c b/block/export/fuse.c index XXXXXXX..XXXXXXX 100644 --- a/block/export/fuse.c +++ b/block/export/fuse.c @@ -XXX,XX +XXX,XX @@ static void fuse_flush(fuse_req_t req, fuse_ino_t inode, fuse_fsync(req, inode, 1, fi); } +#ifdef CONFIG_FUSE_LSEEK +/** + * Let clients inquire allocation status. + */ +static void fuse_lseek(fuse_req_t req, fuse_ino_t inode, off_t offset, + int whence, struct fuse_file_info *fi) +{ + FuseExport *exp = fuse_req_userdata(req); + + if (whence != SEEK_HOLE && whence != SEEK_DATA) { + fuse_reply_err(req, EINVAL); + return; + } + + while (true) { + int64_t pnum; + int ret; + + ret = bdrv_block_status_above(blk_bs(exp->common.blk), NULL, + offset, INT64_MAX, &pnum, NULL, NULL); + if (ret < 0) { + fuse_reply_err(req, -ret); + return; + } + + if (!pnum && (ret & BDRV_BLOCK_EOF)) { + int64_t blk_len; + + /* + * If blk_getlength() rounds (e.g. by sectors), then the + * export length will be rounded, too. However, + * bdrv_block_status_above() may return EOF at unaligned + * offsets. We must not let this become visible and thus + * always simulate a hole between @offset (the real EOF) + * and @blk_len (the client-visible EOF). + */ + + blk_len = blk_getlength(exp->common.blk); + if (blk_len < 0) { + fuse_reply_err(req, -blk_len); + return; + } + + if (offset > blk_len || whence == SEEK_DATA) { + fuse_reply_err(req, ENXIO); + } else { + fuse_reply_lseek(req, offset); + } + return; + } + + if (ret & BDRV_BLOCK_DATA) { + if (whence == SEEK_DATA) { + fuse_reply_lseek(req, offset); + return; + } + } else { + if (whence == SEEK_HOLE) { + fuse_reply_lseek(req, offset); + return; + } + } + + /* Safety check against infinite loops */ + if (!pnum) { + fuse_reply_err(req, ENXIO); + return; + } + + offset += pnum; + } +} +#endif + static const struct fuse_lowlevel_ops fuse_ops = { .init = fuse_init, .lookup = fuse_lookup, @@ -XXX,XX +XXX,XX @@ static const struct fuse_lowlevel_ops fuse_ops = { .fallocate = fuse_fallocate, .flush = fuse_flush, .fsync = fuse_fsync, +#ifdef CONFIG_FUSE_LSEEK + .lseek = fuse_lseek, +#endif }; const BlockExportDriver blk_exp_fuse = { diff --git a/meson.build b/meson.build index XXXXXXX..XXXXXXX 100644 --- a/meson.build +++ b/meson.build @@ -XXX,XX +XXX,XX @@ elif get_option('vhost_user_blk_server').disabled() or not have_system have_vhost_user_blk_server = false endif +if get_option('fuse').disabled() and get_option('fuse_lseek').enabled() + error('Cannot enable fuse-lseek while fuse is disabled') +endif + fuse = dependency('fuse3', required: get_option('fuse'), version: '>=3.1', method: 'pkg-config', static: enable_static) +fuse_lseek = not_found +if not get_option('fuse_lseek').disabled() + if fuse.version().version_compare('>=3.8') + # Dummy dependency + fuse_lseek = declare_dependency() + elif get_option('fuse_lseek').enabled() + if fuse.found() + error('fuse-lseek requires libfuse >=3.8, found ' + fuse.version()) + else + error('fuse-lseek requires libfuse, which was not found') + endif + endif +endif + ################# # config-host.h # ################# @@ -XXX,XX +XXX,XX @@ config_host_data.set('CONFIG_GETTID', has_gettid) config_host_data.set('CONFIG_MALLOC_TRIM', has_malloc_trim) config_host_data.set('CONFIG_STATX', has_statx) config_host_data.set('CONFIG_FUSE', fuse.found()) +config_host_data.set('CONFIG_FUSE_LSEEK', fuse_lseek.found()) config_host_data.set('QEMU_VERSION', '"@0@"'.format(meson.project_version())) config_host_data.set('QEMU_VERSION_MAJOR', meson.project_version().split('.')[0]) config_host_data.set('QEMU_VERSION_MINOR', meson.project_version().split('.')[1]) @@ -XXX,XX +XXX,XX @@ summary_info += {'thread sanitizer': config_host.has_key('CONFIG_TSAN')} summary_info += {'rng-none': config_host.has_key('CONFIG_RNG_NONE')} summary_info += {'Linux keyring': config_host.has_key('CONFIG_SECRET_KEYRING')} summary_info += {'FUSE exports': fuse.found()} +summary_info += {'FUSE lseek': fuse_lseek.found()} summary(summary_info, bool_yn: true) if not supported_cpus.contains(cpu) -- 2.29.2 From: Max Reitz <mreitz@redhat.com> In most cases, _make_test_img does not need a _filter_imgfmt on top. It does that by itself. (The exception is when IMGFMT has been overwritten but TEST_IMG has not. In such cases, we do need a _filter_imgfmt on top to filter the test's original IMGFMT from TEST_IMG.) Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-8-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/161 | 12 ++++++------ tests/qemu-iotests/175 | 6 +++--- tests/qemu-iotests/249 | 6 +++--- 3 files changed, 12 insertions(+), 12 deletions(-) diff --git a/tests/qemu-iotests/161 b/tests/qemu-iotests/161 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/161 +++ b/tests/qemu-iotests/161 @@ -XXX,XX +XXX,XX @@ _supported_os Linux IMG_SIZE=1M # Create the images -TEST_IMG="$TEST_IMG.base" _make_test_img $IMG_SIZE | _filter_imgfmt -TEST_IMG="$TEST_IMG.int" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT | _filter_imgfmt -_make_test_img -b "$TEST_IMG.int" -F $IMGFMT -F $IMGFMT | _filter_imgfmt +TEST_IMG="$TEST_IMG.base" _make_test_img $IMG_SIZE +TEST_IMG="$TEST_IMG.int" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT +_make_test_img -b "$TEST_IMG.int" -F $IMGFMT -F $IMGFMT # First test: reopen $TEST.IMG changing the detect-zeroes option on # its backing file ($TEST_IMG.int). @@ -XXX,XX +XXX,XX @@ echo echo "*** Commit and then change an option on the backing file" echo # Create the images again -TEST_IMG="$TEST_IMG.base" _make_test_img $IMG_SIZE | _filter_imgfmt -TEST_IMG="$TEST_IMG.int" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT| _filter_imgfmt -_make_test_img -b "$TEST_IMG.int" -F $IMGFMT | _filter_imgfmt +TEST_IMG="$TEST_IMG.base" _make_test_img $IMG_SIZE +TEST_IMG="$TEST_IMG.int" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT +_make_test_img -b "$TEST_IMG.int" -F $IMGFMT _launch_qemu -drive if=none,file="${TEST_IMG}" _send_qemu_cmd $QEMU_HANDLE \ diff --git a/tests/qemu-iotests/175 b/tests/qemu-iotests/175 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/175 +++ b/tests/qemu-iotests/175 @@ -XXX,XX +XXX,XX @@ min_blocks=$(stat -c '%b' "$TEST_DIR/empty") echo echo "== creating image with default preallocation ==" -_make_test_img -o extent_size_hint=0 $size | _filter_imgfmt +_make_test_img -o extent_size_hint=0 $size stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size for mode in off full falloc; do echo echo "== creating image with preallocation $mode ==" - _make_test_img -o preallocation=$mode,extent_size_hint=0 $size | _filter_imgfmt + _make_test_img -o preallocation=$mode,extent_size_hint=0 $size stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size done for new_size in 4096 1048576; do echo echo "== resize empty image with block_resize ==" - _make_test_img -o extent_size_hint=0 0 | _filter_imgfmt + _make_test_img -o extent_size_hint=0 0 _block_resize $TEST_IMG $new_size >/dev/null stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $new_size done diff --git a/tests/qemu-iotests/249 b/tests/qemu-iotests/249 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/249 +++ b/tests/qemu-iotests/249 @@ -XXX,XX +XXX,XX @@ _supported_os Linux IMG_SIZE=1M # Create the images: base <- int <- active -TEST_IMG="$TEST_IMG.base" _make_test_img $IMG_SIZE | _filter_imgfmt -TEST_IMG="$TEST_IMG.int" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT | _filter_imgfmt -_make_test_img -b "$TEST_IMG.int" -F $IMGFMT | _filter_imgfmt +TEST_IMG="$TEST_IMG.base" _make_test_img $IMG_SIZE +TEST_IMG="$TEST_IMG.int" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT +_make_test_img -b "$TEST_IMG.int" -F $IMGFMT # Launch QEMU with these two drives: # none0: base (read-only) -- 2.29.2 From: Max Reitz <mreitz@redhat.com> Executing _make_test_img as part of a pipe will undo all variable changes it has done. As such, this could not work with FUSE (because we want to remember all of our exports and their qemu instances). Replace the pipe by a temporary file in 071 and 174 (the two tests that can run on FUSE). Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-9-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/071 | 19 +++++++++++++++---- tests/qemu-iotests/174 | 10 +++++++++- 2 files changed, 24 insertions(+), 5 deletions(-) diff --git a/tests/qemu-iotests/071 b/tests/qemu-iotests/071 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/071 +++ b/tests/qemu-iotests/071 @@ -XXX,XX +XXX,XX @@ echo echo "=== Testing blkverify through filename ===" echo -TEST_IMG="$TEST_IMG.base" IMGFMT="raw" _make_test_img --no-opts $IMG_SIZE |\ - _filter_imgfmt +# _make_test_img may set variables that we need to retain. Everything +# in a pipe is executed in a subshell, so doing so would throw away +# all changes. Therefore, we have to store the output in some temp +# file and filter that. +scratch_out="$TEST_DIR/img-create.out" + +TEST_IMG="$TEST_IMG.base" IMGFMT="raw" _make_test_img --no-opts $IMG_SIZE \ + >"$scratch_out" +_filter_imgfmt <"$scratch_out" +rm -f "$scratch_out" + _make_test_img $IMG_SIZE $QEMU_IO -c "open -o driver=raw,file.driver=blkverify,file.raw.filename=$TEST_IMG.base $TEST_IMG" \ -c 'read 0 512' -c 'write -P 42 0x38000 512' -c 'read -P 42 0x38000 512' | _filter_qemu_io @@ -XXX,XX +XXX,XX @@ echo echo "=== Testing blkverify through file blockref ===" echo -TEST_IMG="$TEST_IMG.base" IMGFMT="raw" _make_test_img --no-opts $IMG_SIZE |\ - _filter_imgfmt +TEST_IMG="$TEST_IMG.base" IMGFMT="raw" _make_test_img --no-opts $IMG_SIZE \ + >"$scratch_out" +_filter_imgfmt <"$scratch_out" + _make_test_img $IMG_SIZE $QEMU_IO -c "open -o driver=raw,file.driver=blkverify,file.raw.filename=$TEST_IMG.base,file.test.driver=$IMGFMT,file.test.file.filename=$TEST_IMG" \ -c 'read 0 512' -c 'write -P 42 0x38000 512' -c 'read -P 42 0x38000 512' | _filter_qemu_io diff --git a/tests/qemu-iotests/174 b/tests/qemu-iotests/174 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/174 +++ b/tests/qemu-iotests/174 @@ -XXX,XX +XXX,XX @@ _unsupported_fmt raw size=256K -IMGFMT=raw IMGKEYSECRET= _make_test_img --no-opts $size | _filter_imgfmt + +# _make_test_img may set variables that we need to retain. Everything +# in a pipe is executed in a subshell, so doing so would throw away +# all changes. Therefore, we have to store the output in some temp +# file and filter that. +scratch_out="$TEST_DIR/img-create.out" +IMGFMT=raw IMGKEYSECRET= _make_test_img --no-opts $size >"$scratch_out" +_filter_imgfmt <"$scratch_out" +rm -f "$scratch_out" echo echo "== reading wrong format should fail ==" -- 2.29.2 From: Max Reitz <mreitz@redhat.com> qemu-img convert (without -n) can often be replaced by a combination of _make_test_img + qemu-img convert -n. Doing so allows converting to protocols that do not allow direct file creation, such as FUSE exports. The only problem is that for formats other than qcow2 and qed (qcow1 at least), this may lead to high disk usage for some reason, so we cannot do it everywhere. But we can do it in 028 and 089, so let us do that so they can run on FUSE exports. Also, in 028 this allows us to remove a 9-line comment that used to explain why we cannot safely filter drive-backup's image creation output. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-10-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/028 | 14 ++++---------- tests/qemu-iotests/028.out | 3 +++ tests/qemu-iotests/089 | 3 ++- tests/qemu-iotests/089.out | 1 + 4 files changed, 10 insertions(+), 11 deletions(-) diff --git a/tests/qemu-iotests/028 b/tests/qemu-iotests/028 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/028 +++ b/tests/qemu-iotests/028 @@ -XXX,XX +XXX,XX @@ else QEMU_COMM_TIMEOUT=1 fi -# Silence output since it contains the disk image path and QEMU's readline -# character echoing makes it very hard to filter the output. Plus, there -# is no telling how many times the command will repeat before succeeding. -# (Note that creating the image results in a "Formatting..." message over -# stdout, which is the same channel the monitor uses. We cannot reliably -# wait for it because the monitor output may interact with it in such a -# way that _timed_wait_for cannot read it. However, once the block job is -# done, we know that the "Formatting..." message must have appeared -# already, so the output is still deterministic.) -silent=y _send_qemu_cmd $h "drive_backup disk ${TEST_IMG}.copy" "(qemu)" +TEST_IMG="$TEST_IMG.copy" _make_test_img $image_size +_send_qemu_cmd $h "drive_backup -n disk ${TEST_IMG}.copy" "(qemu)" \ + | _filter_imgfmt + silent=y qemu_cmd_repeat=20 _send_qemu_cmd $h "info block-jobs" "No active jobs" _send_qemu_cmd $h "info block-jobs" "No active jobs" _send_qemu_cmd $h 'quit' "" diff --git a/tests/qemu-iotests/028.out b/tests/qemu-iotests/028.out index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/028.out +++ b/tests/qemu-iotests/028.out @@ -XXX,XX +XXX,XX @@ No errors were found on the image. block-backup +Formatting 'TEST_DIR/t.IMGFMT.copy', fmt=IMGFMT size=4294968832 +QEMU X.Y.Z monitor - type 'help' for more information +(qemu) drive_backup -n disk TEST_DIR/t.IMGFMT.copy (qemu) info block-jobs No active jobs === IO: pattern 195 diff --git a/tests/qemu-iotests/089 b/tests/qemu-iotests/089 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/089 +++ b/tests/qemu-iotests/089 @@ -XXX,XX +XXX,XX @@ TEST_IMG="$TEST_IMG.base" _make_test_img $IMG_SIZE $QEMU_IO -c 'write -P 42 0 512' -c 'write -P 23 512 512' \ -c 'write -P 66 1024 512' "$TEST_IMG.base" | _filter_qemu_io -$QEMU_IMG convert -f raw -O $IMGFMT "$TEST_IMG.base" "$TEST_IMG" +_make_test_img $IMG_SIZE +$QEMU_IMG convert -f raw -O $IMGFMT -n "$TEST_IMG.base" "$TEST_IMG" $QEMU_IO_PROG --cache $CACHEMODE --aio $AIOMODE \ -c 'read -P 42 0 512' -c 'read -P 23 512 512' \ diff --git a/tests/qemu-iotests/089.out b/tests/qemu-iotests/089.out index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/089.out +++ b/tests/qemu-iotests/089.out @@ -XXX,XX +XXX,XX @@ wrote 512/512 bytes at offset 512 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 512/512 bytes at offset 1024 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 read 512/512 bytes at offset 0 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 512/512 bytes at offset 512 -- 2.29.2 From: Max Reitz <mreitz@redhat.com> This generally does not work on non-file protocols. It is better to create the image with the final name from the start, and most tests do this already. Let 046 follow suit. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-11-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/046 | 5 +++-- tests/qemu-iotests/046.out | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/tests/qemu-iotests/046 b/tests/qemu-iotests/046 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/046 +++ b/tests/qemu-iotests/046 @@ -XXX,XX +XXX,XX @@ size=128M echo echo "== creating backing file for COW tests ==" +TEST_IMG_SAVE=$TEST_IMG +TEST_IMG="$TEST_IMG.base" _make_test_img $size backing_io() @@ -XXX,XX +XXX,XX @@ backing_io() backing_io 0 32 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io -mv "$TEST_IMG" "$TEST_IMG.base" - +TEST_IMG=$TEST_IMG_SAVE _make_test_img -b "$TEST_IMG.base" -F $IMGFMT 6G echo diff --git a/tests/qemu-iotests/046.out b/tests/qemu-iotests/046.out index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/046.out +++ b/tests/qemu-iotests/046.out @@ -XXX,XX +XXX,XX @@ QA output created by 046 == creating backing file for COW tests == -Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 wrote 65536/65536 bytes at offset 0 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 65536/65536 bytes at offset 65536 -- 2.29.2 From: Max Reitz <mreitz@redhat.com> Avoid creating images with custom filenames in $TEST_DIR, because non-file protocols may want to keep $TEST_IMG (and all other test images) in some other directory. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-12-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/200 | 3 +-- tests/qemu-iotests/200.out | 4 ++-- tests/qemu-iotests/229 | 3 +-- tests/qemu-iotests/229.out | 6 +++--- 4 files changed, 7 insertions(+), 9 deletions(-) diff --git a/tests/qemu-iotests/200 b/tests/qemu-iotests/200 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/200 +++ b/tests/qemu-iotests/200 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 _supported_fmt qcow2 qed _supported_proto file -BACKING_IMG="${TEST_DIR}/backing.img" -TEST_IMG="${TEST_DIR}/test.img" +BACKING_IMG="$TEST_IMG.base" TEST_IMG="$BACKING_IMG" _make_test_img 512M _make_test_img -F $IMGFMT -b "$BACKING_IMG" 512M diff --git a/tests/qemu-iotests/200.out b/tests/qemu-iotests/200.out index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/200.out +++ b/tests/qemu-iotests/200.out @@ -XXX,XX +XXX,XX @@ QA output created by 200 -Formatting 'TEST_DIR/backing.img', fmt=IMGFMT size=536870912 -Formatting 'TEST_DIR/test.img', fmt=IMGFMT size=536870912 backing_file=TEST_DIR/backing.img backing_fmt=IMGFMT +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=536870912 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=536870912 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT wrote 314572800/314572800 bytes at offset 512 300 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) diff --git a/tests/qemu-iotests/229 b/tests/qemu-iotests/229 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/229 +++ b/tests/qemu-iotests/229 @@ -XXX,XX +XXX,XX @@ _supported_os Linux _unsupported_imgopts data_file -DEST_IMG="$TEST_DIR/d.$IMGFMT" -TEST_IMG="$TEST_DIR/b.$IMGFMT" +DEST_IMG="$TEST_IMG.dest" BLKDEBUG_CONF="$TEST_DIR/blkdebug.conf" _make_test_img 2M diff --git a/tests/qemu-iotests/229.out b/tests/qemu-iotests/229.out index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/229.out +++ b/tests/qemu-iotests/229.out @@ -XXX,XX +XXX,XX @@ QA output created by 229 -Formatting 'TEST_DIR/b.IMGFMT', fmt=IMGFMT size=2097152 -Formatting 'TEST_DIR/d.IMGFMT', fmt=IMGFMT size=2097152 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2097152 +Formatting 'TEST_DIR/t.IMGFMT.dest', fmt=IMGFMT size=2097152 wrote 2097152/2097152 bytes at offset 0 2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) {'execute': 'qmp_capabilities'} @@ -XXX,XX +XXX,XX @@ wrote 2097152/2097152 bytes at offset 0 === Starting drive-mirror, causing error & stop === -{'execute': 'drive-mirror', 'arguments': {'device': 'testdisk', 'format': 'IMGFMT', 'target': 'blkdebug:TEST_DIR/blkdebug.conf:TEST_DIR/d.IMGFMT', 'sync': 'full', 'mode': 'existing', 'on-source-error': 'stop', 'on-target-error': 'stop' }} +{'execute': 'drive-mirror', 'arguments': {'device': 'testdisk', 'format': 'IMGFMT', 'target': 'blkdebug:TEST_DIR/blkdebug.conf:TEST_DIR/t.IMGFMT.dest', 'sync': 'full', 'mode': 'existing', 'on-source-error': 'stop', 'on-target-error': 'stop' }} {"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "created", "id": "testdisk"}} {"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "running", "id": "testdisk"}} {"return": {}} -- 2.29.2 From: Max Reitz <mreitz@redhat.com> If the test environment has some other child processes running (like a storage daemon that provides a FUSE export), then "wait" will never finish. Use wait=yes _cleanup_qemu instead. (We need to discard the output so there is no change to the reference output.) Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-13-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/091 | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tests/qemu-iotests/091 b/tests/qemu-iotests/091 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/091 +++ b/tests/qemu-iotests/091 @@ -XXX,XX +XXX,XX @@ _send_qemu_cmd $h2 'qemu-io disk flush' "(qemu)" _send_qemu_cmd $h2 'quit' "" _send_qemu_cmd $h1 'quit' "" -wait +wait=yes _cleanup_qemu >/dev/null + echo "Check image pattern" ${QEMU_IO} -c "read -P 0x22 0 4M" "${TEST_IMG}" | _filter_testdir | _filter_qemu_io -- 2.29.2 From: Max Reitz <mreitz@redhat.com> Most Python tests are restricted to the file protocol (without explicitly saying so), but these are the ones that would break ./check -fuse -qcow2. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-14-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/206 | 3 ++- tests/qemu-iotests/242 | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/tests/qemu-iotests/206 b/tests/qemu-iotests/206 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/206 +++ b/tests/qemu-iotests/206 @@ -XXX,XX +XXX,XX @@ import iotests from iotests import imgfmt -iotests.script_initialize(supported_fmts=['qcow2']) +iotests.script_initialize(supported_fmts=['qcow2'], + supported_protocols=['file']) iotests.verify_working_luks() with iotests.FilePath('t.qcow2') as disk_path, \ diff --git a/tests/qemu-iotests/242 b/tests/qemu-iotests/242 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/242 +++ b/tests/qemu-iotests/242 @@ -XXX,XX +XXX,XX @@ import struct from iotests import qemu_img_create, qemu_io, qemu_img_pipe, \ file_path, img_info_log, log, filter_qemu_io -iotests.script_initialize(supported_fmts=['qcow2']) +iotests.script_initialize(supported_fmts=['qcow2'], + supported_protocols=['file']) disk = file_path('disk') chunk = 256 * 1024 -- 2.29.2 From: Max Reitz <mreitz@redhat.com> When most iotests want to create a test image that is named differently from the default $TEST_IMG, they do something like this: TEST_IMG="$TEST_IMG.base" _make_test_img $options This works fine with the "file" protocol, but not so much for anything else: _make_test_img tries to create an image under $TEST_IMG_FILE first, and only under $TEST_IMG if the former is not set; and on everything but "file", $TEST_IMG_FILE is set. There are two ways we can fix this: First, we could make all tests adjust not only TEST_IMG, but also TEST_IMG_FILE if that is present (e.g. with something like _set_test_img_suffix $suffix that would affect not only TEST_IMG but also TEST_IMG_FILE, if necessary). This is a pretty clean solution, and this is maybe what we should have done from the start. But it would also require changes to most existing bash tests. So the alternative is this: Let _make_test_img see whether $TEST_IMG_FILE still points to the original value. If so, it is possible that the caller has adjusted $TEST_IMG but not $TEST_IMG_FILE. In such a case, we can (for most protocols) derive the corresponding $TEST_IMG_FILE value from $TEST_IMG value and thus work around what technically is the caller misbehaving. This second solution is less clean, but it is robust against people keeping their old habit of adjusting TEST_IMG only, and requires much less changes. So this patch implements it. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-15-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/common.rc | 40 +++++++++++++++++++++++++++++++++--- 1 file changed, 37 insertions(+), 3 deletions(-) diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/common.rc +++ b/tests/qemu-iotests/common.rc @@ -XXX,XX +XXX,XX @@ else TEST_IMG=$IMGPROTO:$TEST_DIR/t.$IMGFMT fi fi +ORIG_TEST_IMG_FILE=$TEST_IMG_FILE ORIG_TEST_IMG="$TEST_IMG" if [ -z "$TEST_DIR" ]; then @@ -XXX,XX +XXX,XX @@ _get_data_file() | sed -e "s#\\\$TEST_IMG#$1#" } +# Translate a $TEST_IMG to its corresponding $TEST_IMG_FILE for +# different protocols +_test_img_to_test_img_file() +{ + case "$IMGPROTO" in + file) + echo "$1" + ;; + + nfs) + echo "$1" | sed -e "s#nfs://127.0.0.1##" + ;; + + ssh) + echo "$1" | \ + sed -e "s#ssh://\\($USER@\\)\\?127.0.0.1\\(:[0-9]\\+\\)\\?##" + ;; + + *) + return 1 + ;; + esac +} + _make_test_img() { # extra qemu-img options can be added by tests @@ -XXX,XX +XXX,XX @@ _make_test_img() local opts_param=false local misc_params=() - if [ -n "$TEST_IMG_FILE" ]; then - img_name=$TEST_IMG_FILE - else + if [ -z "$TEST_IMG_FILE" ]; then img_name=$TEST_IMG + elif [ "$IMGOPTSSYNTAX" != "true" -a \ + "$TEST_IMG_FILE" = "$ORIG_TEST_IMG_FILE" ]; then + # Handle cases of tests only updating TEST_IMG, but not TEST_IMG_FILE + img_name=$(_test_img_to_test_img_file "$TEST_IMG") + if [ "$?" != 0 ]; then + img_name=$TEST_IMG_FILE + fi + else + # $TEST_IMG_FILE is not the default value, so it definitely has been + # modified by the test + img_name=$TEST_IMG_FILE fi if [ -n "$IMGOPTS" ]; then -- 2.29.2 From: Max Reitz <mreitz@redhat.com> 287 creates an image in a subshell (thanks to the pipe) to see whether that is possible with compression_type=zstd. If _make_test_img were to modify any global state, this global state would then be lost before we could cleanup the image. When using FUSE as the test protocol, this global state is important, so clean up the image before the state is lost. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-16-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/287 | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/qemu-iotests/287 b/tests/qemu-iotests/287 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/287 +++ b/tests/qemu-iotests/287 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 CLUSTER_SIZE=65536 # Check if we can run this test. -if IMGOPTS='compression_type=zstd' _make_test_img 64M | - grep "Invalid parameter 'zstd'"; then +output=$(_make_test_img -o 'compression_type=zstd' 64M; _cleanup_test_img) +if echo "$output" | grep -q "Invalid parameter 'zstd'"; then _notrun "ZSTD is disabled" fi -- 2.29.2 From: Max Reitz <mreitz@redhat.com> Otherwise, exports and block devices are not properly shut down and closed, unless the users explicitly issues blockdev-del and block-export-del commands for each of them. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-17-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- storage-daemon/qemu-storage-daemon.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/storage-daemon/qemu-storage-daemon.c b/storage-daemon/qemu-storage-daemon.c index XXXXXXX..XXXXXXX 100644 --- a/storage-daemon/qemu-storage-daemon.c +++ b/storage-daemon/qemu-storage-daemon.c @@ -XXX,XX +XXX,XX @@ int main(int argc, char *argv[]) main_loop_wait(false); } + bdrv_drain_all_begin(); + bdrv_close_all(); + monitor_cleanup(); qemu_chr_cleanup(); user_creatable_cleanup(); -- 2.29.2 From: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201027190600.192171-18-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/check | 11 +++++++++++ tests/qemu-iotests/common.rc | 17 +++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/check +++ b/tests/qemu-iotests/check @@ -XXX,XX +XXX,XX @@ if [ -z $QEMU_NBD_PROG ]; then fi export QEMU_NBD_PROG="$(type -p "$QEMU_NBD_PROG")" +if [ -z "$QSD_PROG" ]; then + if [ -x "$build_iotests/qemu-storage-daemon" ]; then + export QSD_PROG="$build_iotests/qemu-storage-daemon" + elif [ -x "$build_root/storage-daemon/qemu-storage-daemon" ]; then + export QSD_PROG="$build_root/storage-daemon/qemu-storage-daemon" + else + _init_error "qemu-storage-daemon not found" + fi +fi +export QSD_PROG="$(type -p "$QSD_PROG")" + if [ -x "$build_iotests/socket_scm_helper" ] then export SOCKET_SCM_HELPER="$build_iotests/socket_scm_helper" diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/common.rc +++ b/tests/qemu-iotests/common.rc @@ -XXX,XX +XXX,XX @@ fi : ${VALGRIND_QEMU_IMG=$VALGRIND_QEMU} : ${VALGRIND_QEMU_IO=$VALGRIND_QEMU} : ${VALGRIND_QEMU_NBD=$VALGRIND_QEMU} +: ${VALGRIND_QSD=$VALGRIND_QEMU} # The Valgrind own parameters may be set with # its environment variable VALGRIND_OPTS, e.g. @@ -XXX,XX +XXX,XX @@ _qemu_nbd_wrapper() return $RETVAL } +_qemu_storage_daemon_wrapper() +{ + local VALGRIND_LOGFILE="${TEST_DIR}"/$$.valgrind + ( + if [ -n "${QSD_NEED_PID}" ]; then + echo $BASHPID > "${QEMU_TEST_DIR}/qemu-storage-daemon.pid" + fi + VALGRIND_QEMU="${VALGRIND_QSD}" _qemu_proc_exec "${VALGRIND_LOGFILE}" \ + "$QSD_PROG" $QSD_OPTIONS "$@" + ) + RETVAL=$? + _qemu_proc_valgrind_log "${VALGRIND_LOGFILE}" $RETVAL + return $RETVAL +} + # Valgrind bug #409141 https://bugs.kde.org/show_bug.cgi?id=409141 # Until valgrind 3.16+ is ubiquitous, we must work around a hang in # valgrind when issuing sigkill. Disable valgrind for this invocation. @@ -XXX,XX +XXX,XX @@ export QEMU=_qemu_wrapper export QEMU_IMG=_qemu_img_wrapper export QEMU_IO=_qemu_io_wrapper export QEMU_NBD=_qemu_nbd_wrapper +export QSD=_qemu_storage_daemon_wrapper if [ "$IMGOPTSSYNTAX" = "true" ]; then DRIVER="driver=$IMGFMT" -- 2.29.2 From: Max Reitz <mreitz@redhat.com> This pretends FUSE exports are a kind of protocol. As such, they are always tested under the format node. This is probably the best way to test them, actually, because this will generate more I/O load and more varied patterns. Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201027190600.192171-19-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/check | 6 ++ tests/qemu-iotests/common.filter | 5 +- tests/qemu-iotests/common.rc | 124 +++++++++++++++++++++++++++++++ 3 files changed, 134 insertions(+), 1 deletion(-) diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/check +++ b/tests/qemu-iotests/check @@ -XXX,XX +XXX,XX @@ image protocol options -rbd test rbd -sheepdog test sheepdog -nbd test nbd + -fuse test fuse -ssh test ssh -nfs test nfs @@ -XXX,XX +XXX,XX @@ testlist options xpand=false ;; + -fuse) + IMGPROTO=fuse + xpand=false + ;; + -ssh) IMGPROTO=ssh xpand=false diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/common.filter +++ b/tests/qemu-iotests/common.filter @@ -XXX,XX +XXX,XX @@ _filter_qom_path() _filter_testdir() { $SED -e "s#$TEST_DIR/#TEST_DIR/#g" \ - -e "s#$SOCK_DIR/#SOCK_DIR/#g" + -e "s#$SOCK_DIR/#SOCK_DIR/#g" \ + -e "s#SOCK_DIR/fuse-#TEST_DIR/#g" } # replace occurrences of the actual IMGFMT value with IMGFMT @@ -XXX,XX +XXX,XX @@ _filter_img_create_filenames() -e "s#$IMGPROTO:$TEST_DIR#TEST_DIR#g" \ -e "s#$TEST_DIR#TEST_DIR#g" \ -e "s#$SOCK_DIR#SOCK_DIR#g" \ + -e 's#SOCK_DIR/fuse-#TEST_DIR/#g' \ -e "s#$IMGFMT#IMGFMT#g" \ -e 's#nbd:127.0.0.1:[0-9]\\+#TEST_DIR/t.IMGFMT#g' \ -e 's#nbd+unix:///\??socket=SOCK_DIR/nbd#TEST_DIR/t.IMGFMT#g' @@ -XXX,XX +XXX,XX @@ _filter_img_info() -e "s#$IMGFMT#IMGFMT#g" \ -e 's#nbd://127.0.0.1:[0-9]\\+$#TEST_DIR/t.IMGFMT#g' \ -e 's#nbd+unix:///\??socket=SOCK_DIR/nbd#TEST_DIR/t.IMGFMT#g' \ + -e 's#SOCK_DIR/fuse-#TEST_DIR/#g' \ -e "/encrypted: yes/d" \ -e "/cluster_size: [0-9]\\+/d" \ -e "/table_size: [0-9]\\+/d" \ diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/common.rc +++ b/tests/qemu-iotests/common.rc @@ -XXX,XX +XXX,XX @@ if [ "$IMGOPTSSYNTAX" = "true" ]; then TEST_IMG_FILE=$TEST_DIR/t.$IMGFMT TEST_IMG="$DRIVER,file.driver=nbd,file.type=unix" TEST_IMG="$TEST_IMG,file.path=$SOCK_DIR/nbd" + elif [ "$IMGPROTO" = "fuse" ]; then + TEST_IMG_FILE=$TEST_DIR/t.$IMGFMT + TEST_IMG="$DRIVER,file.filename=$SOCK_DIR/fuse-t.$IMGFMT" elif [ "$IMGPROTO" = "ssh" ]; then TEST_IMG_FILE=$TEST_DIR/t.$IMGFMT TEST_IMG="$DRIVER,file.driver=ssh,file.host=127.0.0.1,file.path=$TEST_IMG_FILE" @@ -XXX,XX +XXX,XX @@ else elif [ "$IMGPROTO" = "nbd" ]; then TEST_IMG_FILE=$TEST_DIR/t.$IMGFMT TEST_IMG="nbd+unix:///?socket=$SOCK_DIR/nbd" + elif [ "$IMGPROTO" = "fuse" ]; then + TEST_IMG_FILE=$TEST_DIR/t.$IMGFMT + TEST_IMG="$SOCK_DIR/fuse-t.$IMGFMT" elif [ "$IMGPROTO" = "ssh" ]; then TEST_IMG_FILE=$TEST_DIR/t.$IMGFMT REMOTE_TEST_DIR="ssh://\\($USER@\\)\\?127.0.0.1\\(:[0-9]\\+\\)\\?$TEST_DIR" @@ -XXX,XX +XXX,XX @@ fi ORIG_TEST_IMG_FILE=$TEST_IMG_FILE ORIG_TEST_IMG="$TEST_IMG" +FUSE_PIDS=() +FUSE_EXPORTS=() + if [ -z "$TEST_DIR" ]; then TEST_DIR=$PWD/scratch fi @@ -XXX,XX +XXX,XX @@ _test_img_to_test_img_file() echo "$1" ;; + fuse) + echo "$1" | sed -e "s#$SOCK_DIR/fuse-#$TEST_DIR/#" + ;; + nfs) echo "$1" | sed -e "s#nfs://127.0.0.1##" ;; @@ -XXX,XX +XXX,XX @@ _make_test_img() local opts_param=false local misc_params=() + if [[ $IMGPROTO == fuse && $TEST_IMG == $SOCK_DIR/fuse-* ]]; then + # The caller may be trying to overwrite an existing image + _rm_test_img "$TEST_IMG" + fi + if [ -z "$TEST_IMG_FILE" ]; then img_name=$TEST_IMG elif [ "$IMGOPTSSYNTAX" != "true" -a \ @@ -XXX,XX +XXX,XX @@ _make_test_img() eval "$QEMU_NBD -v -t -k '$SOCK_DIR/nbd' -f $IMGFMT -e 42 -x '' $TEST_IMG_FILE >/dev/null &" sleep 1 # FIXME: qemu-nbd needs to be listening before we continue fi + + if [ $IMGPROTO = "fuse" -a -f "$img_name" ]; then + local export_mp + local pid + local pidfile + local timeout + + export_mp=$(echo "$img_name" | sed -e "s#$TEST_DIR/#$SOCK_DIR/fuse-#") + if ! echo "$export_mp" | grep -q "^$SOCK_DIR"; then + echo 'Cannot use FUSE exports with images outside of TEST_DIR' >&2 + return 1 + fi + + touch "$export_mp" + rm -f "$SOCK_DIR/fuse-output" + + # Usually, users would export formatted nodes. But we present fuse as a + # protocol-level driver here, so we have to leave the format to the + # client. + QSD_NEED_PID=y $QSD \ + --blockdev file,node-name=export-node,filename=$img_name,discard=unmap \ + --export fuse,id=fuse-export,node-name=export-node,mountpoint="$export_mp",writable=on,growable=on \ + & + + pidfile="$QEMU_TEST_DIR/qemu-storage-daemon.pid" + + # Wait for the PID file + while [ ! -f "$pidfile" ]; do + sleep 0.5 + done + + pid=$(cat "$pidfile") + rm -f "$pidfile" + + FUSE_PIDS+=($pid) + FUSE_EXPORTS+=("$export_mp") + fi } _rm_test_img() { local img=$1 + + if [[ $IMGPROTO == fuse && $img == $SOCK_DIR/fuse-* ]]; then + # Drop a FUSE export + local df_output + local i + local image_file + local index='' + local timeout + + for i in "${!FUSE_EXPORTS[@]}"; do + if [ "${FUSE_EXPORTS[i]}" = "$img" ]; then + index=$i + break + fi + done + + if [ -z "$index" ]; then + # Probably gone already + return 0 + fi + + kill "${FUSE_PIDS[index]}" + + # Wait until the mount is gone + timeout=10 # *0.5 s + while true; do + # Will show the mount point; if the mount is still there, + # it will be $img. + df_output=$(df "$img" 2>/dev/null) + + # But df may also show an error ("Transpoint endpoint not + # connected"), so retry in such cases + if [ -n "$df_output" ]; then + if ! echo "$df_output" | grep -q "$img"; then + break + fi + fi + + sleep 0.5 + + timeout=$((timeout - 1)) + if [ "$timeout" = 0 ]; then + echo 'Failed to take down FUSE export' >&2 + return 1 + fi + done + + rm -f "$img" + + unset "FUSE_PIDS[$index]" + unset "FUSE_EXPORTS[$index]" + + image_file=$(echo "$img" | sed -e "s#$SOCK_DIR/fuse-#$TEST_DIR/#") + _rm_test_img "$image_file" + return + fi + if [ "$IMGFMT" = "vmdk" ]; then # Remove all the extents for vmdk "$QEMU_IMG" info "$img" 2>/dev/null | grep 'filename:' | cut -f 2 -d: \ @@ -XXX,XX +XXX,XX @@ _cleanup_test_img() rm -f "$TEST_IMG_FILE" ;; + fuse) + local mp + + for mp in "${FUSE_EXPORTS[@]}"; do + _rm_test_img "$mp" + done + + FUSE_PIDS=() + FUSE_EXPORTS=() + ;; + file) _rm_test_img "$TEST_DIR/t.$IMGFMT" _rm_test_img "$TEST_DIR/t.$IMGFMT.orig" @@ -XXX,XX +XXX,XX @@ _img_info() sed -e "s#$REMOTE_TEST_DIR#TEST_DIR#g" \ -e "s#$IMGPROTO:$TEST_DIR#TEST_DIR#g" \ -e "s#$TEST_DIR#TEST_DIR#g" \ + -e "s#$SOCK_DIR/fuse-#TEST_DIR/#g" \ -e "s#$IMGFMT#IMGFMT#g" \ -e "/^disk size:/ D" \ -e "/actual-size/ D" | \ -- 2.29.2 From: Max Reitz <mreitz@redhat.com> Many tests (that do not support generic protocols) can run just fine with FUSE-exported images, so allow them to. Note that this is no attempt at being definitely complete. There are some tests that might be modified to run on FUSE, but this patch still skips them. This patch only tries to pick the rather low-hanging fruits. Note that 221 and 250 only pass when .lseek is correctly implemented, which is only possible with a libfuse that is 3.8 or newer. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-20-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/025 | 2 +- tests/qemu-iotests/026 | 2 +- tests/qemu-iotests/028 | 2 +- tests/qemu-iotests/031 | 2 +- tests/qemu-iotests/034 | 2 +- tests/qemu-iotests/036 | 2 +- tests/qemu-iotests/037 | 2 +- tests/qemu-iotests/038 | 2 +- tests/qemu-iotests/039 | 2 +- tests/qemu-iotests/046 | 2 +- tests/qemu-iotests/050 | 2 +- tests/qemu-iotests/054 | 2 +- tests/qemu-iotests/060 | 2 +- tests/qemu-iotests/071 | 2 +- tests/qemu-iotests/079 | 2 +- tests/qemu-iotests/080 | 2 +- tests/qemu-iotests/089 | 2 +- tests/qemu-iotests/090 | 2 +- tests/qemu-iotests/091 | 2 +- tests/qemu-iotests/095 | 2 +- tests/qemu-iotests/097 | 2 +- tests/qemu-iotests/098 | 2 +- tests/qemu-iotests/102 | 2 +- tests/qemu-iotests/103 | 2 +- tests/qemu-iotests/106 | 2 +- tests/qemu-iotests/107 | 2 +- tests/qemu-iotests/108 | 2 +- tests/qemu-iotests/111 | 2 +- tests/qemu-iotests/112 | 2 +- tests/qemu-iotests/115 | 2 +- tests/qemu-iotests/117 | 2 +- tests/qemu-iotests/120 | 2 +- tests/qemu-iotests/121 | 2 +- tests/qemu-iotests/127 | 2 +- tests/qemu-iotests/133 | 2 +- tests/qemu-iotests/137 | 2 +- tests/qemu-iotests/138 | 2 +- tests/qemu-iotests/140 | 2 +- tests/qemu-iotests/154 | 2 +- tests/qemu-iotests/161 | 2 +- tests/qemu-iotests/171 | 2 +- tests/qemu-iotests/175 | 2 +- tests/qemu-iotests/176 | 2 +- tests/qemu-iotests/177 | 2 +- tests/qemu-iotests/179 | 2 +- tests/qemu-iotests/183 | 2 +- tests/qemu-iotests/186 | 2 +- tests/qemu-iotests/187 | 2 +- tests/qemu-iotests/191 | 2 +- tests/qemu-iotests/195 | 2 +- tests/qemu-iotests/200 | 2 +- tests/qemu-iotests/204 | 2 +- tests/qemu-iotests/214 | 2 +- tests/qemu-iotests/217 | 2 +- tests/qemu-iotests/220 | 2 +- tests/qemu-iotests/221 | 2 +- tests/qemu-iotests/229 | 2 +- tests/qemu-iotests/247 | 2 +- tests/qemu-iotests/249 | 2 +- tests/qemu-iotests/250 | 2 +- tests/qemu-iotests/252 | 2 +- tests/qemu-iotests/265 | 2 +- tests/qemu-iotests/268 | 2 +- tests/qemu-iotests/272 | 2 +- tests/qemu-iotests/273 | 2 +- tests/qemu-iotests/279 | 2 +- tests/qemu-iotests/286 | 2 +- tests/qemu-iotests/287 | 2 +- tests/qemu-iotests/289 | 2 +- tests/qemu-iotests/290 | 2 +- tests/qemu-iotests/291 | 2 +- tests/qemu-iotests/292 | 2 +- tests/qemu-iotests/293 | 2 +- tests/qemu-iotests/294 | 2 +- tests/qemu-iotests/305 | 2 +- 75 files changed, 75 insertions(+), 75 deletions(-) diff --git a/tests/qemu-iotests/025 b/tests/qemu-iotests/025 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/025 +++ b/tests/qemu-iotests/025 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.pattern _supported_fmt raw qcow2 qed luks -_supported_proto file sheepdog rbd nfs +_supported_proto file sheepdog rbd nfs fuse echo "=== Creating image" echo diff --git a/tests/qemu-iotests/026 b/tests/qemu-iotests/026 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/026 +++ b/tests/qemu-iotests/026 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # Currently only qcow2 supports rebasing _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _default_cache_mode writethrough _supported_cache_modes writethrough none # The refcount table tests expect a certain minimum width for refcount entries diff --git a/tests/qemu-iotests/028 b/tests/qemu-iotests/028 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/028 +++ b/tests/qemu-iotests/028 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # Any format supporting backing files except vmdk and qcow which do not support # smaller backing files. _supported_fmt qcow2 qed -_supported_proto file +_supported_proto file fuse _supported_os Linux # Choose a size that is not necessarily a cluster size multiple for image diff --git a/tests/qemu-iotests/031 b/tests/qemu-iotests/031 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/031 +++ b/tests/qemu-iotests/031 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # This tests qcow2-specific low-level functionality _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # We want to test compat=0.10, which does not support external data # files or refcount widths other than 16 _unsupported_imgopts data_file 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' diff --git a/tests/qemu-iotests/034 b/tests/qemu-iotests/034 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/034 +++ b/tests/qemu-iotests/034 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow qcow2 vmdk qed -_supported_proto file +_supported_proto file fuse _supported_os Linux _unsupported_imgopts "subformat=monolithicFlat" \ "subformat=twoGbMaxExtentFlat" \ diff --git a/tests/qemu-iotests/036 b/tests/qemu-iotests/036 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/036 +++ b/tests/qemu-iotests/036 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # This tests qcow2-specific low-level functionality _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # Only qcow2v3 and later supports feature bits; # qcow2.py does not support external data files; # this test requires a cluster size large enough for the feature table diff --git a/tests/qemu-iotests/037 b/tests/qemu-iotests/037 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/037 +++ b/tests/qemu-iotests/037 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow qcow2 vmdk qed -_supported_proto file +_supported_proto file fuse _unsupported_imgopts "subformat=monolithicFlat" \ "subformat=twoGbMaxExtentFlat" \ "subformat=twoGbMaxExtentSparse" \ diff --git a/tests/qemu-iotests/038 b/tests/qemu-iotests/038 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/038 +++ b/tests/qemu-iotests/038 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 qed -_supported_proto file +_supported_proto file fuse _supported_os Linux CLUSTER_SIZE=2M diff --git a/tests/qemu-iotests/039 b/tests/qemu-iotests/039 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/039 +++ b/tests/qemu-iotests/039 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux _default_cache_mode writethrough _supported_cache_modes writethrough diff --git a/tests/qemu-iotests/046 b/tests/qemu-iotests/046 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/046 +++ b/tests/qemu-iotests/046 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # data_file does not support compressed clusters _unsupported_imgopts data_file diff --git a/tests/qemu-iotests/050 b/tests/qemu-iotests/050 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/050 +++ b/tests/qemu-iotests/050 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 qed -_supported_proto file +_supported_proto file fuse echo echo "== Creating images ==" diff --git a/tests/qemu-iotests/054 b/tests/qemu-iotests/054 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/054 +++ b/tests/qemu-iotests/054 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse echo echo "creating too large image (1 EB)" diff --git a/tests/qemu-iotests/060 b/tests/qemu-iotests/060 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/060 +++ b/tests/qemu-iotests/060 @@ -XXX,XX +XXX,XX @@ _filter_io_error() # This tests qcow2-specific low-level functionality _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # These tests only work for compat=1.1 images without an external # data file with refcount_bits=16 diff --git a/tests/qemu-iotests/071 b/tests/qemu-iotests/071 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/071 +++ b/tests/qemu-iotests/071 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _require_drivers blkdebug blkverify # blkdebug can only inject errors on bs->file, not on the data_file, # so thie test does not work with external data files diff --git a/tests/qemu-iotests/079 b/tests/qemu-iotests/079 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/079 +++ b/tests/qemu-iotests/079 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file nfs +_supported_proto file nfs fuse # Some containers (e.g. non-x86 on Travis) do not allow large files _require_large_file 4G diff --git a/tests/qemu-iotests/080 b/tests/qemu-iotests/080 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/080 +++ b/tests/qemu-iotests/080 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # - Internal snapshots are (currently) impossible with refcount_bits=1, # and generally impossible with external data files diff --git a/tests/qemu-iotests/089 b/tests/qemu-iotests/089 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/089 +++ b/tests/qemu-iotests/089 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # Because anything other than 16 would change the output of qemu_io -c info _unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' diff --git a/tests/qemu-iotests/090 b/tests/qemu-iotests/090 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/090 +++ b/tests/qemu-iotests/090 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file nfs +_supported_proto file nfs fuse # External data files do not support compressed clusters _unsupported_imgopts data_file diff --git a/tests/qemu-iotests/091 b/tests/qemu-iotests/091 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/091 +++ b/tests/qemu-iotests/091 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.qemu _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux _supported_cache_modes writethrough none writeback _default_cache_mode none writeback diff --git a/tests/qemu-iotests/095 b/tests/qemu-iotests/095 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/095 +++ b/tests/qemu-iotests/095 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.qemu _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse size_smaller=5M size_larger=100M diff --git a/tests/qemu-iotests/097 b/tests/qemu-iotests/097 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/097 +++ b/tests/qemu-iotests/097 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # Any format supporting backing files and bdrv_make_empty _supported_fmt qcow qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux diff --git a/tests/qemu-iotests/098 b/tests/qemu-iotests/098 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/098 +++ b/tests/qemu-iotests/098 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.pattern _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # The code path we want to test here only works for compat=1.1 images; # blkdebug can only inject errors on bs->file, so external data files # do not work with this test diff --git a/tests/qemu-iotests/102 b/tests/qemu-iotests/102 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/102 +++ b/tests/qemu-iotests/102 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.qemu _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse IMG_SIZE=64K diff --git a/tests/qemu-iotests/103 b/tests/qemu-iotests/103 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/103 +++ b/tests/qemu-iotests/103 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file nfs +_supported_proto file nfs fuse # Internal snapshots are (currently) impossible with refcount_bits=1, # and generally impossible with external data files _unsupported_imgopts 'refcount_bits=1[^0-9]' data_file diff --git a/tests/qemu-iotests/106 b/tests/qemu-iotests/106 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/106 +++ b/tests/qemu-iotests/106 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt raw -_supported_proto file +_supported_proto file fuse _supported_os Linux # in kB diff --git a/tests/qemu-iotests/107 b/tests/qemu-iotests/107 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/107 +++ b/tests/qemu-iotests/107 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file nfs +_supported_proto file nfs fuse IMG_SIZE=64K diff --git a/tests/qemu-iotests/108 b/tests/qemu-iotests/108 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/108 +++ b/tests/qemu-iotests/108 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # This tests qcow2-specific low-level functionality _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # This test directly modifies a refblock so it relies on refcount_bits being 16; # and the low-level modification it performs are not tuned for external data diff --git a/tests/qemu-iotests/111 b/tests/qemu-iotests/111 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/111 +++ b/tests/qemu-iotests/111 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qed qcow qcow2 vmdk -_supported_proto file +_supported_proto file fuse _unsupported_imgopts "subformat=monolithicFlat" "subformat=twoGbMaxExtentFlat" _make_test_img -b "$TEST_IMG.inexistent" diff --git a/tests/qemu-iotests/112 b/tests/qemu-iotests/112 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/112 +++ b/tests/qemu-iotests/112 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # This tests qcow2-specific low-level functionality _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # This test will set refcount_bits on its own which would conflict with the # manual setting; compat will be overridden as well; # and external data files do not work well with our refcount testing diff --git a/tests/qemu-iotests/115 b/tests/qemu-iotests/115 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/115 +++ b/tests/qemu-iotests/115 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # This test relies on refcounts being 64 bits wide (which does not work with # compat=0.10) _unsupported_imgopts 'refcount_bits=\([^6]\|.\([^4]\|$\)\)' 'compat=0.10' diff --git a/tests/qemu-iotests/117 b/tests/qemu-iotests/117 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/117 +++ b/tests/qemu-iotests/117 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.qemu _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _make_test_img 64k diff --git a/tests/qemu-iotests/120 b/tests/qemu-iotests/120 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/120 +++ b/tests/qemu-iotests/120 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt generic -_supported_proto file +_supported_proto file fuse _unsupported_fmt luks _require_drivers raw diff --git a/tests/qemu-iotests/121 b/tests/qemu-iotests/121 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/121 +++ b/tests/qemu-iotests/121 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # Refcount structures are used much differently with external data # files diff --git a/tests/qemu-iotests/127 b/tests/qemu-iotests/127 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/127 +++ b/tests/qemu-iotests/127 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.qemu _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _require_devices virtio-scsi scsi-hd diff --git a/tests/qemu-iotests/133 b/tests/qemu-iotests/133 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/133 +++ b/tests/qemu-iotests/133 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse TEST_IMG="$TEST_IMG.base" _make_test_img 64M _make_test_img -b "$TEST_IMG.base" -F $IMGFMT diff --git a/tests/qemu-iotests/137 b/tests/qemu-iotests/137 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/137 +++ b/tests/qemu-iotests/137 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.qemu _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # We are going to use lazy-refcounts _unsupported_imgopts 'compat=0.10' diff --git a/tests/qemu-iotests/138 b/tests/qemu-iotests/138 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/138 +++ b/tests/qemu-iotests/138 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # This tests qcow2-specific low-level functionality _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # With an external data file, data clusters are not refcounted # (so qemu-img check would not do much); diff --git a/tests/qemu-iotests/140 b/tests/qemu-iotests/140 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/140 +++ b/tests/qemu-iotests/140 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.qemu _supported_fmt generic -_supported_proto file +_supported_proto file fuse _supported_os Linux _make_test_img 64k diff --git a/tests/qemu-iotests/154 b/tests/qemu-iotests/154 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/154 +++ b/tests/qemu-iotests/154 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux CLUSTER_SIZE=4k diff --git a/tests/qemu-iotests/161 b/tests/qemu-iotests/161 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/161 +++ b/tests/qemu-iotests/161 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # Any format implementing BlockDriver.bdrv_change_backing_file _supported_fmt qcow2 qed -_supported_proto file +_supported_proto file fuse _supported_os Linux IMG_SIZE=1M diff --git a/tests/qemu-iotests/171 b/tests/qemu-iotests/171 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/171 +++ b/tests/qemu-iotests/171 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt raw -_supported_proto file +_supported_proto file fuse _supported_os Linux diff --git a/tests/qemu-iotests/175 b/tests/qemu-iotests/175 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/175 +++ b/tests/qemu-iotests/175 @@ -XXX,XX +XXX,XX @@ EOF . ./common.filter _supported_fmt raw -_supported_proto file +_supported_proto file fuse _supported_os Linux _default_cache_mode none diff --git a/tests/qemu-iotests/176 b/tests/qemu-iotests/176 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/176 +++ b/tests/qemu-iotests/176 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # This test is specific to qcow2 _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # Persistent dirty bitmaps require compat=1.1; # Internal snapshots forbid using an external data file diff --git a/tests/qemu-iotests/177 b/tests/qemu-iotests/177 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/177 +++ b/tests/qemu-iotests/177 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # tests specific to compat=1.1. _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse CLUSTER_SIZE=1M size=128M diff --git a/tests/qemu-iotests/179 b/tests/qemu-iotests/179 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/179 +++ b/tests/qemu-iotests/179 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # v2 images can't mark clusters as zero diff --git a/tests/qemu-iotests/183 b/tests/qemu-iotests/183 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/183 +++ b/tests/qemu-iotests/183 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 _supported_os Linux FreeBSD NetBSD _supported_fmt qcow2 raw qed quorum -_supported_proto file +_supported_proto file fuse size=64M _make_test_img $size diff --git a/tests/qemu-iotests/186 b/tests/qemu-iotests/186 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/186 +++ b/tests/qemu-iotests/186 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _require_drivers null-co if [ "$QEMU_DEFAULT_MACHINE" != "pc" ]; then diff --git a/tests/qemu-iotests/187 b/tests/qemu-iotests/187 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/187 +++ b/tests/qemu-iotests/187 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse size=64M _make_test_img $size diff --git a/tests/qemu-iotests/191 b/tests/qemu-iotests/191 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/191 +++ b/tests/qemu-iotests/191 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.qemu _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # An external data file would change the query-named-block-nodes output _unsupported_imgopts data_file diff --git a/tests/qemu-iotests/195 b/tests/qemu-iotests/195 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/195 +++ b/tests/qemu-iotests/195 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse do_run_qemu() { diff --git a/tests/qemu-iotests/200 b/tests/qemu-iotests/200 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/200 +++ b/tests/qemu-iotests/200 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.qemu _supported_fmt qcow2 qed -_supported_proto file +_supported_proto file fuse BACKING_IMG="$TEST_IMG.base" diff --git a/tests/qemu-iotests/204 b/tests/qemu-iotests/204 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/204 +++ b/tests/qemu-iotests/204 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # This test assumes that discard leaves zero clusters; see test 177 for # other tests that also work in older images _unsupported_imgopts 'compat=0.10' diff --git a/tests/qemu-iotests/214 b/tests/qemu-iotests/214 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/214 +++ b/tests/qemu-iotests/214 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # Repairing the corrupted image requires qemu-img check to store a # refcount up to 3, which requires at least two refcount bits. diff --git a/tests/qemu-iotests/217 b/tests/qemu-iotests/217 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/217 +++ b/tests/qemu-iotests/217 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # This test is specific to qcow2 _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # This test needs clusters with at least a refcount of 2 so that # OFLAG_COPIED is not set. refcount_bits=1 is therefore unsupported. diff --git a/tests/qemu-iotests/220 b/tests/qemu-iotests/220 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/220 +++ b/tests/qemu-iotests/220 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.pattern _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # To use a different refcount width but 16 bits we need compat=1.1, # and external data files do not support compressed clusters. diff --git a/tests/qemu-iotests/221 b/tests/qemu-iotests/221 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/221 +++ b/tests/qemu-iotests/221 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt raw -_supported_proto file +_supported_proto file fuse _supported_os Linux _default_cache_mode writeback diff --git a/tests/qemu-iotests/229 b/tests/qemu-iotests/229 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/229 +++ b/tests/qemu-iotests/229 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # Needs backing file and backing format support _supported_fmt qcow2 qed -_supported_proto file +_supported_proto file fuse _supported_os Linux # blkdebug can only inject errors on bs->file, so external data files # do not work with this test diff --git a/tests/qemu-iotests/247 b/tests/qemu-iotests/247 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/247 +++ b/tests/qemu-iotests/247 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # Requires backing files and .bdrv_change_backing_file support _supported_fmt qcow2 qed -_supported_proto file +_supported_proto file fuse size=128M diff --git a/tests/qemu-iotests/249 b/tests/qemu-iotests/249 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/249 +++ b/tests/qemu-iotests/249 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # Any format implementing BlockDriver.bdrv_change_backing_file _supported_fmt qcow2 qed -_supported_proto file +_supported_proto file fuse _supported_os Linux IMG_SIZE=1M diff --git a/tests/qemu-iotests/250 b/tests/qemu-iotests/250 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/250 +++ b/tests/qemu-iotests/250 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # This test does not make much sense with external data files _unsupported_imgopts data_file diff --git a/tests/qemu-iotests/252 b/tests/qemu-iotests/252 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/252 +++ b/tests/qemu-iotests/252 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # zero cluster support _supported_fmt qcow2 _unsupported_imgopts 'compat=0.10' -_supported_proto file +_supported_proto file fuse _supported_os Linux CLUSTER_SIZE=65536 diff --git a/tests/qemu-iotests/265 b/tests/qemu-iotests/265 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/265 +++ b/tests/qemu-iotests/265 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # qcow2-specific test _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux echo '--- Writing to the image ---' diff --git a/tests/qemu-iotests/268 b/tests/qemu-iotests/268 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/268 +++ b/tests/qemu-iotests/268 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse echo echo "== Required alignment larger than cluster size ==" diff --git a/tests/qemu-iotests/272 b/tests/qemu-iotests/272 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/272 +++ b/tests/qemu-iotests/272 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # This is a qcow2 regression test _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # External data files do not support compression; # We need an exact cluster size (2M) and refcount width (2) so we can diff --git a/tests/qemu-iotests/273 b/tests/qemu-iotests/273 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/273 +++ b/tests/qemu-iotests/273 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # This is a qcow2 regression test _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # External data files would add nodes to the block graph, so it would # not match the reference output diff --git a/tests/qemu-iotests/279 b/tests/qemu-iotests/279 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/279 +++ b/tests/qemu-iotests/279 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 # Backing files are required... _supported_fmt qcow qcow2 vmdk qed -_supported_proto file +_supported_proto file fuse _supported_os Linux _unsupported_imgopts "subformat=monolithicFlat" \ "subformat=twoGbMaxExtentFlat" \ diff --git a/tests/qemu-iotests/286 b/tests/qemu-iotests/286 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/286 +++ b/tests/qemu-iotests/286 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.qemu _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # Internal snapshots are (currently) impossible with refcount_bits=1, # and generally impossible with external data files _unsupported_imgopts 'refcount_bits=1[^0-9]' data_file diff --git a/tests/qemu-iotests/287 b/tests/qemu-iotests/287 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/287 +++ b/tests/qemu-iotests/287 @@ -XXX,XX +XXX,XX @@ status=1 # failure is the default! # This tests qocw2-specific low-level functionality _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux _unsupported_imgopts 'compat=0.10' data_file diff --git a/tests/qemu-iotests/289 b/tests/qemu-iotests/289 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/289 +++ b/tests/qemu-iotests/289 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.pattern _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse # This is a v3-exclusive test; # As for data_file, error paths often very much depend on whether # there is an external data file or not; so we create one exactly when diff --git a/tests/qemu-iotests/290 b/tests/qemu-iotests/290 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/290 +++ b/tests/qemu-iotests/290 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux _unsupported_imgopts 'compat=0.10' refcount_bits data_file diff --git a/tests/qemu-iotests/291 b/tests/qemu-iotests/291 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/291 +++ b/tests/qemu-iotests/291 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.nbd _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux _require_command QEMU_NBD # compat=0.10 does not support bitmaps diff --git a/tests/qemu-iotests/292 b/tests/qemu-iotests/292 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/292 +++ b/tests/qemu-iotests/292 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux # We need qemu-img map to show the file where the data is allocated, # but with an external data file, it will show that instead of the diff --git a/tests/qemu-iotests/293 b/tests/qemu-iotests/293 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/293 +++ b/tests/qemu-iotests/293 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 luks -_supported_proto file #TODO +_supported_proto file fuse #TODO _require_working_luks QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT diff --git a/tests/qemu-iotests/294 b/tests/qemu-iotests/294 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/294 +++ b/tests/qemu-iotests/294 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt luks -_supported_proto file #TODO +_supported_proto file fuse #TODO QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT diff --git a/tests/qemu-iotests/305 b/tests/qemu-iotests/305 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/305 +++ b/tests/qemu-iotests/305 @@ -XXX,XX +XXX,XX @@ trap "_cleanup; exit \$status" 0 1 2 3 15 . ./common.filter _supported_fmt qcow2 -_supported_proto file +_supported_proto file fuse _supported_os Linux _unsupported_imgopts cluster_size refcount_bits extended_l2 compat=0.10 data_file -- 2.29.2 From: Max Reitz <mreitz@redhat.com> We have good coverage of the normal I/O paths now, but what remains is a test that tests some more special cases: Exporting an image on itself (thus turning a formatted image into a raw one), some error cases, and non-writable and non-growable exports. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-21-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/308 | 339 +++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/308.out | 97 +++++++++++ tests/qemu-iotests/group | 1 + 3 files changed, 437 insertions(+) create mode 100755 tests/qemu-iotests/308 create mode 100644 tests/qemu-iotests/308.out diff --git a/tests/qemu-iotests/308 b/tests/qemu-iotests/308 new file mode 100755 index XXXXXXX..XXXXXXX --- /dev/null +++ b/tests/qemu-iotests/308 @@ -XXX,XX +XXX,XX @@ +#!/usr/bin/env bash +# +# Test FUSE exports (in ways that are not captured by the generic +# tests) +# +# Copyright (C) 2020 Red Hat, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# + +seq=$(basename "$0") +echo "QA output created by $seq" + +status=1 # failure is the default! + +_cleanup() +{ + _cleanup_qemu + _cleanup_test_img + rmdir "$EXT_MP" 2>/dev/null + rm -f "$EXT_MP" + rm -f "$COPIED_IMG" +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common.rc +. ./common.filter +. ./common.qemu + +# Generic format, but needs a plain filename +_supported_fmt generic +if [ "$IMGOPTSSYNTAX" = "true" ]; then + _unsupported_fmt $IMGFMT +fi +# We need the image to have exactly the specified size, and VPC does +# not allow that by default +_unsupported_fmt vpc + +_supported_proto file # We create the FUSE export manually +_supported_os Linux # We need /dev/urandom + +# $1: Export ID +# $2: Options (beyond the node-name and ID) +# $3: Expected return value (defaults to 'return') +# $4: Node to export (defaults to 'node-format') +fuse_export_add() +{ + _send_qemu_cmd $QEMU_HANDLE \ + "{'execute': 'block-export-add', + 'arguments': { + 'type': 'fuse', + 'id': '$1', + 'node-name': '${4:-node-format}', + $2 + } }" \ + "${3:-return}" \ + | _filter_imgfmt +} + +# $1: Export ID +fuse_export_del() +{ + _send_qemu_cmd $QEMU_HANDLE \ + "{'execute': 'block-export-del', + 'arguments': { + 'id': '$1' + } }" \ + 'return' + + _send_qemu_cmd $QEMU_HANDLE \ + '' \ + 'BLOCK_EXPORT_DELETED' +} + +# Return the length of the protocol file +# $1: Protocol node export mount point +# $2: Original file (to compare) +get_proto_len() +{ + len1=$(stat -c '%s' "$1") + len2=$(stat -c '%s' "$2") + + if [ "$len1" != "$len2" ]; then + echo 'ERROR: Length of export and original differ:' >&2 + echo "$len1 != $len2" >&2 + else + echo '(OK: Lengths of export and original are the same)' >&2 + fi + + echo "$len1" +} + +COPIED_IMG="$TEST_IMG.copy" +EXT_MP="$TEST_IMG.fuse" + +echo '=== Set up ===' + +# Create image with random data +_make_test_img 64M +$QEMU_IO -c 'write -s /dev/urandom 0 64M' "$TEST_IMG" | _filter_qemu_io + +_launch_qemu +_send_qemu_cmd $QEMU_HANDLE \ + "{'execute': 'qmp_capabilities'}" \ + 'return' + +# Separate blockdev-add calls for format and protocol so we can remove +# the format layer later on +_send_qemu_cmd $QEMU_HANDLE \ + "{'execute': 'blockdev-add', + 'arguments': { + 'driver': 'file', + 'node-name': 'node-protocol', + 'filename': '$TEST_IMG' + } }" \ + 'return' + +_send_qemu_cmd $QEMU_HANDLE \ + "{'execute': 'blockdev-add', + 'arguments': { + 'driver': '$IMGFMT', + 'node-name': 'node-format', + 'file': 'node-protocol' + } }" \ + 'return' + +echo +echo '=== Mountpoint not present ===' + +rmdir "$EXT_MP" 2>/dev/null +rm -f "$EXT_MP" +output=$(fuse_export_add 'export-err' "'mountpoint': '$EXT_MP'" error) + +if echo "$output" | grep -q "Invalid parameter 'fuse'"; then + _notrun 'No FUSE support' +fi + +echo "$output" + +echo +echo '=== Mountpoint is a directory ===' + +mkdir "$EXT_MP" +fuse_export_add 'export-err' "'mountpoint': '$EXT_MP'" error +rmdir "$EXT_MP" + +echo +echo '=== Mountpoint is a regular file ===' + +touch "$EXT_MP" +fuse_export_add 'export-mp' "'mountpoint': '$EXT_MP'" + +# Check that the export presents the same data as the original image +$QEMU_IMG compare -f raw -F $IMGFMT -U "$EXT_MP" "$TEST_IMG" + +echo +echo '=== Mount over existing file ===' + +# This is the coolest feature of FUSE exports: You can transparently +# make images in any format appear as raw images +fuse_export_add 'export-img' "'mountpoint': '$TEST_IMG'" + +# Accesses both exports at the same time, so we get a concurrency test +$QEMU_IMG compare -f raw -F raw -U "$EXT_MP" "$TEST_IMG" + +# Just to be sure, we later want to compare the data offline. Also, +# this allows us to see that cp works without complaining. +# (This is not a given, because cp will expect a short read at EOF. +# Internally, qemu does not allow short reads, so we have to check +# whether the FUSE export driver lets them work.) +cp "$TEST_IMG" "$COPIED_IMG" + +# $TEST_IMG will be in mode 0400 because it is read-only; we are going +# to write to the copy, so make it writable +chmod 0600 "$COPIED_IMG" + +echo +echo '=== Double export ===' + +# We have already seen that exporting a node twice works fine, but you +# cannot export anything twice on the same mount point. The reason is +# that qemu has to stat the given mount point, and this would have to +# be answered by the same qemu instance if it already has an export +# there. However, it cannot answer the stat because it is itself +# caught up in that same stat. +fuse_export_add 'export-err' "'mountpoint': '$EXT_MP'" error + +echo +echo '=== Remove export ===' + +# Double-check that $EXT_MP appears as a non-empty file (the raw image) +$QEMU_IMG info -f raw "$EXT_MP" | grep 'virtual size' + +fuse_export_del 'export-mp' + +# See that the file appears empty again +$QEMU_IMG info -f raw "$EXT_MP" | grep 'virtual size' + +echo +echo '=== Writable export ===' + +fuse_export_add 'export-mp' "'mountpoint': '$EXT_MP', 'writable': true" + +# Check that writing to the read-only export fails +$QEMU_IO -f raw -c 'write -P 42 1M 64k' "$TEST_IMG" | _filter_qemu_io + +# But here it should work +$QEMU_IO -f raw -c 'write -P 42 1M 64k' "$EXT_MP" | _filter_qemu_io + +# (Adjust the copy, too) +$QEMU_IO -f raw -c 'write -P 42 1M 64k' "$COPIED_IMG" | _filter_qemu_io + +echo +echo '=== Resizing exports ===' + +# Here, we need to export the protocol node -- the format layer may +# not be growable, simply because the format does not support it. + +# Remove all exports and the format node first so permissions will not +# get in the way +fuse_export_del 'export-mp' +fuse_export_del 'export-img' + +_send_qemu_cmd $QEMU_HANDLE \ + "{'execute': 'blockdev-del', + 'arguments': { + 'node-name': 'node-format' + } }" \ + 'return' + +# Now export the protocol node +fuse_export_add \ + 'export-mp' \ + "'mountpoint': '$EXT_MP', 'writable': true" \ + 'return' \ + 'node-protocol' + +echo +echo '--- Try growing non-growable export ---' + +# Get the current size so we can write beyond the EOF +orig_len=$(get_proto_len "$EXT_MP" "$TEST_IMG") +orig_disk_usage=$(stat -c '%b' "$TEST_IMG") + +# Should fail (exports are non-growable by default) +# (Note that qemu-io can never write beyond the EOF, so we have to use +# dd here) +dd if=/dev/zero of="$EXT_MP" bs=1 count=64k seek=$orig_len 2>&1 \ + | _filter_testdir | _filter_imgfmt + +echo +echo '--- Resize export ---' + +# But we can truncate it explicitly; even with fallocate +fallocate -o "$orig_len" -l 64k "$EXT_MP" + +new_len=$(get_proto_len "$EXT_MP" "$TEST_IMG") +if [ "$new_len" != "$((orig_len + 65536))" ]; then + echo 'ERROR: Unexpected post-truncate image size:' + echo "$new_len != $((orig_len + 65536))" +else + echo 'OK: Post-truncate image size is as expected' +fi + +new_disk_usage=$(stat -c '%b' "$TEST_IMG") +if [ "$new_disk_usage" -gt "$orig_disk_usage" ]; then + echo 'OK: Disk usage grew with fallocate' +else + echo 'ERROR: Disk usage did not grow despite fallocate:' + echo "$orig_disk_usage => $new_disk_usage" +fi + +echo +echo '--- Try growing growable export ---' + +# Now export as growable +fuse_export_del 'export-mp' +fuse_export_add \ + 'export-mp' \ + "'mountpoint': '$EXT_MP', 'writable': true, 'growable': true" \ + 'return' \ + 'node-protocol' + +# Now we should be able to write beyond the EOF +dd if=/dev/zero of="$EXT_MP" bs=1 count=64k seek=$new_len 2>&1 \ + | _filter_testdir | _filter_imgfmt + +new_len=$(get_proto_len "$EXT_MP" "$TEST_IMG") +if [ "$new_len" != "$((orig_len + 131072))" ]; then + echo 'ERROR: Unexpected post-grow image size:' + echo "$new_len != $((orig_len + 131072))" +else + echo 'OK: Post-grow image size is as expected' +fi + +echo +echo '--- Shrink export ---' + +# Now go back to the original size +truncate -s "$orig_len" "$EXT_MP" + +new_len=$(get_proto_len "$EXT_MP" "$TEST_IMG") +if [ "$new_len" != "$orig_len" ]; then + echo 'ERROR: Unexpected post-truncate image size:' + echo "$new_len != $orig_len" +else + echo 'OK: Post-truncate image size is as expected' +fi + +echo +echo '=== Tear down ===' + +_send_qemu_cmd $QEMU_HANDLE \ + "{'execute': 'quit'}" \ + 'return' + +wait=yes _cleanup_qemu + +echo +echo '=== Compare copy with original ===' + +$QEMU_IMG compare -f raw -F $IMGFMT "$COPIED_IMG" "$TEST_IMG" + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 diff --git a/tests/qemu-iotests/308.out b/tests/qemu-iotests/308.out new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/tests/qemu-iotests/308.out @@ -XXX,XX +XXX,XX @@ +QA output created by 308 +=== Set up === +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 +wrote 67108864/67108864 bytes at offset 0 +64 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +{'execute': 'qmp_capabilities'} +{"return": {}} +{'execute': 'blockdev-add', 'arguments': { 'driver': 'file', 'node-name': 'node-protocol', 'filename': 'TEST_DIR/t.IMGFMT' } } +{"return": {}} +{'execute': 'blockdev-add', 'arguments': { 'driver': 'IMGFMT', 'node-name': 'node-format', 'file': 'node-protocol' } } +{"return": {}} + +=== Mountpoint not present === +{'execute': 'block-export-add', 'arguments': { 'type': 'fuse', 'id': 'export-err', 'node-name': 'node-format', 'mountpoint': 'TEST_DIR/t.IMGFMT.fuse' } } +{"error": {"class": "GenericError", "desc": "Failed to stat 'TEST_DIR/t.IMGFMT.fuse': No such file or directory"}} + +=== Mountpoint is a directory === +{'execute': 'block-export-add', 'arguments': { 'type': 'fuse', 'id': 'export-err', 'node-name': 'node-format', 'mountpoint': 'TEST_DIR/t.IMGFMT.fuse' } } +{"error": {"class": "GenericError", "desc": "'TEST_DIR/t.IMGFMT.fuse' is not a regular file"}} + +=== Mountpoint is a regular file === +{'execute': 'block-export-add', 'arguments': { 'type': 'fuse', 'id': 'export-mp', 'node-name': 'node-format', 'mountpoint': 'TEST_DIR/t.IMGFMT.fuse' } } +{"return": {}} +Images are identical. + +=== Mount over existing file === +{'execute': 'block-export-add', 'arguments': { 'type': 'fuse', 'id': 'export-img', 'node-name': 'node-format', 'mountpoint': 'TEST_DIR/t.IMGFMT' } } +{"return": {}} +Images are identical. + +=== Double export === +{'execute': 'block-export-add', 'arguments': { 'type': 'fuse', 'id': 'export-err', 'node-name': 'node-format', 'mountpoint': 'TEST_DIR/t.IMGFMT.fuse' } } +{"error": {"class": "GenericError", "desc": "There already is a FUSE export on 'TEST_DIR/t.IMGFMT.fuse'"}} + +=== Remove export === +virtual size: 64 MiB (67108864 bytes) +{'execute': 'block-export-del', 'arguments': { 'id': 'export-mp' } } +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "export-mp"}} +virtual size: 0 B (0 bytes) + +=== Writable export === +{'execute': 'block-export-add', 'arguments': { 'type': 'fuse', 'id': 'export-mp', 'node-name': 'node-format', 'mountpoint': 'TEST_DIR/t.IMGFMT.fuse', 'writable': true } } +{"return": {}} +write failed: Permission denied +wrote 65536/65536 bytes at offset 1048576 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 65536/65536 bytes at offset 1048576 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +=== Resizing exports === +{'execute': 'block-export-del', 'arguments': { 'id': 'export-mp' } } +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "export-mp"}} +{'execute': 'block-export-del', 'arguments': { 'id': 'export-img' } } +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "export-img"}} +{'execute': 'blockdev-del', 'arguments': { 'node-name': 'node-format' } } +{"return": {}} +{'execute': 'block-export-add', 'arguments': { 'type': 'fuse', 'id': 'export-mp', 'node-name': 'node-protocol', 'mountpoint': 'TEST_DIR/t.IMGFMT.fuse', 'writable': true } } +{"return": {}} + +--- Try growing non-growable export --- +(OK: Lengths of export and original are the same) +dd: error writing 'TEST_DIR/t.IMGFMT.fuse': Input/output error +1+0 records in +0+0 records out + +--- Resize export --- +(OK: Lengths of export and original are the same) +OK: Post-truncate image size is as expected +OK: Disk usage grew with fallocate + +--- Try growing growable export --- +{'execute': 'block-export-del', 'arguments': { 'id': 'export-mp' } } +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "export-mp"}} +{'execute': 'block-export-add', 'arguments': { 'type': 'fuse', 'id': 'export-mp', 'node-name': 'node-protocol', 'mountpoint': 'TEST_DIR/t.IMGFMT.fuse', 'writable': true, 'growable': true } } +{"return": {}} +65536+0 records in +65536+0 records out +(OK: Lengths of export and original are the same) +OK: Post-grow image size is as expected + +--- Shrink export --- +(OK: Lengths of export and original are the same) +OK: Post-truncate image size is as expected + +=== Tear down === +{'execute': 'quit'} +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "export-mp"}} + +=== Compare copy with original === +Images are identical. +*** done diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -XXX,XX +XXX,XX @@ 304 rw quick 305 rw quick 307 rw quick export +308 rw 309 rw auto quick -- 2.29.2 From: Li Feng <fengli@smartx.com> The scenario is that when accessing a volume on an NFS filesystem without supporting the file lock, Qemu will complain "Failed to lock byte 100", even when setting the file.locking = off. We should do file lock related operations only when the file.locking is enabled, otherwise, the syscall of 'fcntl' will return non-zero. Signed-off-by: Li Feng <fengli@smartx.com> Message-Id: <1607341446-85506-1-git-send-email-fengli@smartx.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/file-posix.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/file-posix.c b/block/file-posix.c index XXXXXXX..XXXXXXX 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -XXX,XX +XXX,XX @@ static int raw_check_perm(BlockDriverState *bs, uint64_t perm, uint64_t shared, } /* Copy locks to the new fd */ - if (s->perm_change_fd) { + if (s->perm_change_fd && s->use_lock) { ret = raw_apply_lock_bytes(NULL, s->perm_change_fd, perm, ~shared, false, errp); if (ret < 0) { -- 2.29.2 From: Max Reitz <mreitz@redhat.com> See the new comment for why this should be done. I do not have a reproducer on master, but when using FUSE block exports, this test breaks depending on the underlying filesystem (for me, it works on tmpfs, but fails on xfs, because the block allocated by file-posix has 16 kB there instead of 4 kB). Suggested-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201207152245.66987-1-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- tests/qemu-iotests/221 | 7 +++++++ tests/qemu-iotests/221.out | 14 ++++++-------- 2 files changed, 13 insertions(+), 8 deletions(-) diff --git a/tests/qemu-iotests/221 b/tests/qemu-iotests/221 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/221 +++ b/tests/qemu-iotests/221 @@ -XXX,XX +XXX,XX @@ echo "=== Check mapping of unaligned raw image ===" echo _make_test_img 65537 # qemu-img create rounds size up + +# file-posix allocates the first block of any images when it is created; +# the size of this block depends on the host page size and the file +# system block size, none of which are constant. Discard the whole +# image so we will not see this allocation in qemu-img map's output. +$QEMU_IO -c 'discard 0 65537' "$TEST_IMG" | _filter_qemu_io + $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map truncate --size=65537 "$TEST_IMG" # so we resize it and check again diff --git a/tests/qemu-iotests/221.out b/tests/qemu-iotests/221.out index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/221.out +++ b/tests/qemu-iotests/221.out @@ -XXX,XX +XXX,XX @@ QA output created by 221 === Check mapping of unaligned raw image === Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=65537 -[{ "start": 0, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 61952, "depth": 0, "zero": true, "data": false, "offset": OFFSET}] -[{ "start": 0, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 61952, "depth": 0, "zero": true, "data": false, "offset": OFFSET}] +discard 65537/65537 bytes at offset 0 +64.001 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +[{ "start": 0, "length": 66048, "depth": 0, "zero": true, "data": false, "offset": OFFSET}] +[{ "start": 0, "length": 66048, "depth": 0, "zero": true, "data": false, "offset": OFFSET}] wrote 1/1 bytes at offset 65536 1 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 61440, "depth": 0, "zero": true, "data": false, "offset": OFFSET}, +[{ "start": 0, "length": 65536, "depth": 0, "zero": true, "data": false, "offset": OFFSET}, { "start": 65536, "length": 1, "depth": 0, "zero": false, "data": true, "offset": OFFSET}, { "start": 65537, "length": 511, "depth": 0, "zero": true, "data": false, "offset": OFFSET}] -[{ "start": 0, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 61440, "depth": 0, "zero": true, "data": false, "offset": OFFSET}, +[{ "start": 0, "length": 65536, "depth": 0, "zero": true, "data": false, "offset": OFFSET}, { "start": 65536, "length": 1, "depth": 0, "zero": false, "data": true, "offset": OFFSET}, { "start": 65537, "length": 511, "depth": 0, "zero": true, "data": false, "offset": OFFSET}] *** done -- 2.29.2 Providing the 'if' property, but not 'canbus' segfaults like this: #0 0x0000555555b0f14d in can_bus_insert_client (bus=0x0, client=0x555556aa9af0) at ../net/can/can_core.c:88 #1 0x00005555559c3803 in can_host_connect (ch=0x555556aa9ac0, errp=0x7fffffffd568) at ../net/can/can_host.c:62 #2 0x00005555559c386a in can_host_complete (uc=0x555556aa9ac0, errp=0x7fffffffd568) at ../net/can/can_host.c:72 #3 0x0000555555d52de9 in user_creatable_complete (uc=0x555556aa9ac0, errp=0x7fffffffd5c8) at ../qom/object_interfaces.c:23 Add the missing NULL check. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201130105615.21799-5-kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- net/can/can_host.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/can/can_host.c b/net/can/can_host.c index XXXXXXX..XXXXXXX 100644 --- a/net/can/can_host.c +++ b/net/can/can_host.c @@ -XXX,XX +XXX,XX @@ static void can_host_connect(CanHostState *ch, Error **errp) CanHostClass *chc = CAN_HOST_GET_CLASS(ch); Error *local_err = NULL; + if (ch->bus == NULL) { + error_setg(errp, "'canbus' property not set"); + return; + } + chc->connect(ch, &local_err); if (local_err) { error_propagate(errp, local_err); -- 2.29.2 From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> We should not set overlap_bytes: 1. Don't worry: it is calculated by bdrv_mark_request_serialising() and will be equal to or greater than bytes anyway. 2. If the request was already aligned up to some greater alignment, than we may break things: we reduce overlap_bytes, and further bdrv_mark_request_serialising() may not help, as it will not restore old bigger alignment. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20201203222713.13507-2-vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/file-posix.c | 1 - 1 file changed, 1 deletion(-) diff --git a/block/file-posix.c b/block/file-posix.c index XXXXXXX..XXXXXXX 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -XXX,XX +XXX,XX @@ raw_do_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int bytes, end = INT64_MAX & -(uint64_t)bs->bl.request_alignment; req->bytes = end - req->offset; - req->overlap_bytes = req->bytes; bdrv_mark_request_serialising(req, bs->bl.request_alignment); } -- 2.29.2 From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> This simplifies following commit. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20201203222713.13507-3-vsementsov@virtuozzo.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/io.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/block/io.c b/block/io.c index XXXXXXX..XXXXXXX 100644 --- a/block/io.c +++ b/block/io.c @@ -XXX,XX +XXX,XX @@ static void bdrv_merge_limits(BlockLimits *dst, const BlockLimits *src) void bdrv_refresh_limits(BlockDriverState *bs, Error **errp) { + ERRP_GUARD(); BlockDriver *drv = bs->drv; BdrvChild *c; bool have_limits; - Error *local_err = NULL; memset(&bs->bl, 0, sizeof(bs->bl)); @@ -XXX,XX +XXX,XX @@ void bdrv_refresh_limits(BlockDriverState *bs, Error **errp) QLIST_FOREACH(c, &bs->children, next) { if (c->role & (BDRV_CHILD_DATA | BDRV_CHILD_FILTERED | BDRV_CHILD_COW)) { - bdrv_refresh_limits(c->bs, &local_err); - if (local_err) { - error_propagate(errp, local_err); + bdrv_refresh_limits(c->bs, errp); + if (*errp) { return; } bdrv_merge_limits(&bs->bl, &c->bs->bl); -- 2.29.2 From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Move bdrv_is_inserted() calls into callers. We are going to make bdrv_check_byte_request() a clean thing. bdrv_is_inserted() is not about checking the request, it's about checking the bs. So, it should be separate. With this patch we probably change error path for some failure scenarios. But depending on the fact that querying too big request on empty cdrom (or corrupted qcow2 node with no drv) will result in EIO and not ENOMEDIUM would be very strange. More over, we are going to move to 64bit requests, so larger requests will be allowed anyway. More over, keeping in mind that cdrom is the only driver that has .bdrv_is_inserted() handler it's strange that we should care so much about it in generic block layer, intuitively we should just do read and write, and cdrom driver should return correct errors if it is not inserted. But it's a work for another series. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20201203222713.13507-4-vsementsov@virtuozzo.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/io.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/block/io.c b/block/io.c index XXXXXXX..XXXXXXX 100644 --- a/block/io.c +++ b/block/io.c @@ -XXX,XX +XXX,XX @@ static bool coroutine_fn bdrv_wait_serialising_requests(BdrvTrackedRequest *self return waited; } -static int bdrv_check_byte_request(BlockDriverState *bs, int64_t offset, - size_t size) +static int bdrv_check_byte_request(int64_t offset, size_t size) { if (size > BDRV_REQUEST_MAX_BYTES) { return -EIO; } - if (!bdrv_is_inserted(bs)) { - return -ENOMEDIUM; - } - if (offset < 0) { return -EIO; } @@ -XXX,XX +XXX,XX @@ int coroutine_fn bdrv_co_preadv_part(BdrvChild *child, trace_bdrv_co_preadv(bs, offset, bytes, flags); - ret = bdrv_check_byte_request(bs, offset, bytes); + if (!bdrv_is_inserted(bs)) { + return -ENOMEDIUM; + } + + ret = bdrv_check_byte_request(offset, bytes); if (ret < 0) { return ret; } @@ -XXX,XX +XXX,XX @@ int coroutine_fn bdrv_co_pwritev_part(BdrvChild *child, trace_bdrv_co_pwritev(child->bs, offset, bytes, flags); - if (!bs->drv) { + if (!bdrv_is_inserted(bs)) { return -ENOMEDIUM; } - ret = bdrv_check_byte_request(bs, offset, bytes); + ret = bdrv_check_byte_request(offset, bytes); if (ret < 0) { return ret; } @@ -XXX,XX +XXX,XX @@ static int coroutine_fn bdrv_co_copy_range_internal( assert(!(read_flags & BDRV_REQ_NO_FALLBACK)); assert(!(write_flags & BDRV_REQ_NO_FALLBACK)); - if (!dst || !dst->bs) { + if (!dst || !dst->bs || !bdrv_is_inserted(dst->bs)) { return -ENOMEDIUM; } - ret = bdrv_check_byte_request(dst->bs, dst_offset, bytes); + ret = bdrv_check_byte_request(dst_offset, bytes); if (ret) { return ret; } @@ -XXX,XX +XXX,XX @@ static int coroutine_fn bdrv_co_copy_range_internal( return bdrv_co_pwrite_zeroes(dst, dst_offset, bytes, write_flags); } - if (!src || !src->bs) { + if (!src || !src->bs || !bdrv_is_inserted(src->bs)) { return -ENOMEDIUM; } - ret = bdrv_check_byte_request(src->bs, src_offset, bytes); + ret = bdrv_check_byte_request(src_offset, bytes); if (ret) { return ret; } -- 2.29.2 From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> We are going to modify block layer to work with 64bit requests. And first step is moving to int64_t type for both offset and bytes arguments in all block request related functions. It's mostly safe (when widening signed or unsigned int to int64_t), but switching from uint64_t is questionable. So, let's first establish the set of requests we want to work with. First signed int64_t should be enough, as off_t is signed anyway. Then, obviously offset + bytes should not overflow. And most interesting: (offset + bytes) being aligned up should not overflow as well. Aligned to what alignment? First thing that comes in mind is bs->bl.request_alignment, as we align up request to this alignment. But there is another thing: look at bdrv_mark_request_serialising(). It aligns request up to some given alignment. And this parameter may be bdrv_get_cluster_size(), which is often a lot greater than bs->bl.request_alignment. Note also, that bdrv_mark_request_serialising() uses signed int64_t for calculations. So, actually, we already depend on some restrictions. Happily, bdrv_get_cluster_size() returns int and bs->bl.request_alignment has 32bit unsigned type, but defined to be a power of 2 less than INT_MAX. So, we may establish, that INT_MAX is absolute maximum for any kind of alignment that may occur with the request. Note, that bdrv_get_cluster_size() is not documented to return power of 2, still bdrv_mark_request_serialising() behaves like it is. Also, backup uses bdi.cluster_size and is not prepared to it not being power of 2. So, let's establish that Qemu supports only power-of-2 clusters and alignments. So, alignment can't be greater than 2^30. Finally to be safe with calculations, to not calculate different maximums for different nodes (depending on cluster size and request_alignment), let's simply set QEMU_ALIGN_DOWN(INT64_MAX, 2^30) as absolute maximum bytes length for Qemu. Actually, it's not much less than INT64_MAX. OK, then, let's apply it to block/io. Let's consider all block/io entry points of offset/bytes: 4 bytes/offset interface functions: bdrv_co_preadv_part(), bdrv_co_pwritev_part(), bdrv_co_copy_range_internal() and bdrv_co_pdiscard() and we check them all with bdrv_check_request(). We also have one entry point with only offset: bdrv_co_truncate(). Check the offset. And one public structure: BdrvTrackedRequest. Happily, it has only three external users: file-posix.c: adopted by this patch write-threshold.c: only read fields test-write-threshold.c: sets obviously small constant values Better is to make the structure private and add corresponding interfaces.. Still it's not obvious what kind of interface is needed for file-posix.c. Let's keep it public but add corresponding assertions. After this patch we'll convert functions in block/io.c to int64_t bytes and offset parameters. We can assume that offset/bytes pair always satisfy new restrictions, and make corresponding assertions where needed. If we reach some offset/bytes point in block/io.c missing bdrv_check_request() it is considered a bug. As well, if block/io.c modifies a offset/bytes request, expanding it more then aligning up to request_alignment, it's a bug too. For all io requests except for discard we keep for now old restriction of 32bit request length. iotest 206 output error message changed, as now test disk size is larger than new limit. Add one more test case with new maximum disk size to cover too-big-L1 case. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20201203222713.13507-5-vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- include/block/block.h | 10 +++++++ include/block/block_int.h | 8 ++++++ block.c | 17 +++++++++++- block/file-posix.c | 6 ++--- block/io.c | 51 +++++++++++++++++++++++++++++------- tests/test-write-threshold.c | 4 +++ tests/qemu-iotests/206 | 2 +- tests/qemu-iotests/206.out | 6 +++++ 8 files changed, 90 insertions(+), 14 deletions(-) diff --git a/include/block/block.h b/include/block/block.h index XXXXXXX..XXXXXXX 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -XXX,XX +XXX,XX @@ typedef struct HDGeometry { INT_MAX >> BDRV_SECTOR_BITS) #define BDRV_REQUEST_MAX_BYTES (BDRV_REQUEST_MAX_SECTORS << BDRV_SECTOR_BITS) +/* + * We want allow aligning requests and disk length up to any 32bit alignment + * and don't afraid of overflow. + * To achieve it, and in the same time use some pretty number as maximum disk + * size, let's define maximum "length" (a limit for any offset/bytes request and + * for disk size) to be the greatest power of 2 less than INT64_MAX. + */ +#define BDRV_MAX_ALIGNMENT (1L << 30) +#define BDRV_MAX_LENGTH (QEMU_ALIGN_DOWN(INT64_MAX, BDRV_MAX_ALIGNMENT)) + /* * Allocation status flags for bdrv_block_status() and friends. * diff --git a/include/block/block_int.h b/include/block/block_int.h index XXXXXXX..XXXXXXX 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -XXX,XX +XXX,XX @@ enum BdrvTrackedRequestType { BDRV_TRACKED_TRUNCATE, }; +/* + * That is not quite good that BdrvTrackedRequest structure is public, + * as block/io.c is very careful about incoming offset/bytes being + * correct. Be sure to assert bdrv_check_request() succeeded after any + * modification of BdrvTrackedRequest object out of block/io.c + */ typedef struct BdrvTrackedRequest { BlockDriverState *bs; int64_t offset; @@ -XXX,XX +XXX,XX @@ typedef struct BdrvTrackedRequest { struct BdrvTrackedRequest *waiting_for; } BdrvTrackedRequest; +int bdrv_check_request(int64_t offset, int64_t bytes); + struct BlockDriver { const char *format_name; int instance_size; diff --git a/block.c b/block.c index XXXXXXX..XXXXXXX 100644 --- a/block.c +++ b/block.c @@ -XXX,XX +XXX,XX @@ int refresh_total_sectors(BlockDriverState *bs, int64_t hint) } bs->total_sectors = hint; + + if (bs->total_sectors * BDRV_SECTOR_SIZE > BDRV_MAX_LENGTH) { + return -EFBIG; + } + return 0; } @@ -XXX,XX +XXX,XX @@ void bdrv_get_backing_filename(BlockDriverState *bs, int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) { + int ret; BlockDriver *drv = bs->drv; /* if bs->drv == NULL, bs is closed, so there's nothing to do here */ if (!drv) { @@ -XXX,XX +XXX,XX @@ int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) return -ENOTSUP; } memset(bdi, 0, sizeof(*bdi)); - return drv->bdrv_get_info(bs, bdi); + ret = drv->bdrv_get_info(bs, bdi); + if (ret < 0) { + return ret; + } + + if (bdi->cluster_size > BDRV_MAX_ALIGNMENT) { + return -EINVAL; + } + + return 0; } ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs, diff --git a/block/file-posix.c b/block/file-posix.c index XXXXXXX..XXXXXXX 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -XXX,XX +XXX,XX @@ raw_do_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int bytes, #ifdef CONFIG_FALLOCATE if (offset + bytes > bs->total_sectors * BDRV_SECTOR_SIZE) { BdrvTrackedRequest *req; - uint64_t end; /* * This is a workaround for a bug in the Linux XFS driver, @@ -XXX,XX +XXX,XX @@ raw_do_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int bytes, assert(req->offset <= offset); assert(req->offset + req->bytes >= offset + bytes); - end = INT64_MAX & -(uint64_t)bs->bl.request_alignment; - req->bytes = end - req->offset; + req->bytes = BDRV_MAX_LENGTH - req->offset; + + assert(bdrv_check_request(req->offset, req->bytes) == 0); bdrv_mark_request_serialising(req, bs->bl.request_alignment); } diff --git a/block/io.c b/block/io.c index XXXXXXX..XXXXXXX 100644 --- a/block/io.c +++ b/block/io.c @@ -XXX,XX +XXX,XX @@ void bdrv_refresh_limits(BlockDriverState *bs, Error **errp) /* Then let the driver override it */ if (drv->bdrv_refresh_limits) { drv->bdrv_refresh_limits(bs, errp); + if (*errp) { + return; + } + } + + if (bs->bl.request_alignment > BDRV_MAX_ALIGNMENT) { + error_setg(errp, "Driver requires too large request alignment"); } } @@ -XXX,XX +XXX,XX @@ static bool coroutine_fn bdrv_wait_serialising_requests(BdrvTrackedRequest *self return waited; } -static int bdrv_check_byte_request(int64_t offset, size_t size) +int bdrv_check_request(int64_t offset, int64_t bytes) { - if (size > BDRV_REQUEST_MAX_BYTES) { + if (offset < 0 || bytes < 0) { return -EIO; } - if (offset < 0) { + if (bytes > BDRV_MAX_LENGTH) { + return -EIO; + } + + if (offset > BDRV_MAX_LENGTH - bytes) { + return -EIO; + } + + return 0; +} + +static int bdrv_check_request32(int64_t offset, int64_t bytes) +{ + int ret = bdrv_check_request(offset, bytes); + if (ret < 0) { + return ret; + } + + if (bytes > BDRV_REQUEST_MAX_BYTES) { return -EIO; } @@ -XXX,XX +XXX,XX @@ int coroutine_fn bdrv_co_preadv_part(BdrvChild *child, return -ENOMEDIUM; } - ret = bdrv_check_byte_request(offset, bytes); + ret = bdrv_check_request32(offset, bytes); if (ret < 0) { return ret; } @@ -XXX,XX +XXX,XX @@ int coroutine_fn bdrv_co_pwritev_part(BdrvChild *child, return -ENOMEDIUM; } - ret = bdrv_check_byte_request(offset, bytes); + ret = bdrv_check_request32(offset, bytes); if (ret < 0) { return ret; } @@ -XXX,XX +XXX,XX @@ int coroutine_fn bdrv_co_pdiscard(BdrvChild *child, int64_t offset, return -EPERM; } - if (offset < 0 || bytes < 0 || bytes > INT64_MAX - offset) { - return -EIO; + ret = bdrv_check_request(offset, bytes); + if (ret < 0) { + return ret; } /* Do nothing if disabled. */ @@ -XXX,XX +XXX,XX @@ static int coroutine_fn bdrv_co_copy_range_internal( if (!dst || !dst->bs || !bdrv_is_inserted(dst->bs)) { return -ENOMEDIUM; } - ret = bdrv_check_byte_request(dst_offset, bytes); + ret = bdrv_check_request32(dst_offset, bytes); if (ret) { return ret; } @@ -XXX,XX +XXX,XX @@ static int coroutine_fn bdrv_co_copy_range_internal( if (!src || !src->bs || !bdrv_is_inserted(src->bs)) { return -ENOMEDIUM; } - ret = bdrv_check_byte_request(src_offset, bytes); + ret = bdrv_check_request32(src_offset, bytes); if (ret) { return ret; } @@ -XXX,XX +XXX,XX @@ int coroutine_fn bdrv_co_truncate(BdrvChild *child, int64_t offset, bool exact, return -EINVAL; } + ret = bdrv_check_request(offset, 0); + if (ret < 0) { + error_setg(errp, "Required too big image size, it must be not greater " + "than %" PRId64, BDRV_MAX_LENGTH); + return ret; + } + old_size = bdrv_getlength(bs); if (old_size < 0) { error_setg_errno(errp, -old_size, "Failed to get old image size"); diff --git a/tests/test-write-threshold.c b/tests/test-write-threshold.c index XXXXXXX..XXXXXXX 100644 --- a/tests/test-write-threshold.c +++ b/tests/test-write-threshold.c @@ -XXX,XX +XXX,XX @@ static void test_threshold_not_trigger(void) req.offset = 1024; req.bytes = 1024; + assert(bdrv_check_request(req.offset, req.bytes) == 0); + bdrv_write_threshold_set(&bs, threshold); amount = bdrv_write_threshold_exceeded(&bs, &req); g_assert_cmpuint(amount, ==, 0); @@ -XXX,XX +XXX,XX @@ static void test_threshold_trigger(void) req.offset = (4 * 1024 * 1024) - 1024; req.bytes = 2 * 1024; + assert(bdrv_check_request(req.offset, req.bytes) == 0); + bdrv_write_threshold_set(&bs, threshold); amount = bdrv_write_threshold_exceeded(&bs, &req); g_assert_cmpuint(amount, >=, 1024); diff --git a/tests/qemu-iotests/206 b/tests/qemu-iotests/206 index XXXXXXX..XXXXXXX 100755 --- a/tests/qemu-iotests/206 +++ b/tests/qemu-iotests/206 @@ -XXX,XX +XXX,XX @@ with iotests.FilePath('t.qcow2') as disk_path, \ vm.launch() for size in [ 1234, 18446744073709551104, 9223372036854775808, - 9223372036854775296 ]: + 9223372036854775296, 9223372035781033984 ]: vm.blockdev_create({ 'driver': imgfmt, 'file': 'node0', 'size': size }) diff --git a/tests/qemu-iotests/206.out b/tests/qemu-iotests/206.out index XXXXXXX..XXXXXXX 100644 --- a/tests/qemu-iotests/206.out +++ b/tests/qemu-iotests/206.out @@ -XXX,XX +XXX,XX @@ Job failed: Could not resize image: Image size cannot be negative {"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "qcow2", "file": "node0", "size": 9223372036854775296}}} {"return": {}} +Job failed: Could not resize image: Required too big image size, it must be not greater than 9223372035781033984 +{"execute": "job-dismiss", "arguments": {"id": "job0"}} +{"return": {}} + +{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "qcow2", "file": "node0", "size": 9223372035781033984}}} +{"return": {}} Job failed: Could not resize image: Failed to grow the L1 table: File too large {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} -- 2.29.2 The only thing that happens after the 'out:' label is blk_unref(blk). However, blk = NULL in all of the error cases, so instead of jumping to 'out:', we can just return directly. Cc: qemu-stable@nongnu.org Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201203172311.68232-2-kwolf@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- blockdev.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/blockdev.c b/blockdev.c index XXXXXXX..XXXXXXX 100644 --- a/blockdev.c +++ b/blockdev.c @@ -XXX,XX +XXX,XX @@ void coroutine_fn qmp_block_resize(bool has_device, const char *device, int64_t size, Error **errp) { Error *local_err = NULL; - BlockBackend *blk = NULL; + BlockBackend *blk; BlockDriverState *bs; AioContext *old_ctx; @@ -XXX,XX +XXX,XX @@ void coroutine_fn qmp_block_resize(bool has_device, const char *device, if (size < 0) { error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); - goto out; + return; } if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { error_setg(errp, QERR_DEVICE_IN_USE, device); - goto out; + return; } blk = blk_new_with_bs(bs, BLK_PERM_RESIZE, BLK_PERM_ALL, errp); if (!blk) { - goto out; + return; } bdrv_drained_begin(bs); @@ -XXX,XX +XXX,XX @@ void coroutine_fn qmp_block_resize(bool has_device, const char *device, bdrv_co_leave(bs, old_ctx); bdrv_drained_end(bs); -out: bdrv_co_lock(bs); blk_unref(blk); bdrv_co_unlock(bs); -- 2.29.2 The drain functions assume that we hold the AioContext lock of the drained block node. Make sure to actually take the lock. Cc: qemu-stable@nongnu.org Fixes: eb94b81a94bce112e6b206df846c1551aaf6cab6 Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201203172311.68232-3-kwolf@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- blockdev.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/blockdev.c b/blockdev.c index XXXXXXX..XXXXXXX 100644 --- a/blockdev.c +++ b/blockdev.c @@ -XXX,XX +XXX,XX @@ void coroutine_fn qmp_block_resize(bool has_device, const char *device, return; } + bdrv_co_lock(bs); bdrv_drained_begin(bs); + bdrv_co_unlock(bs); + old_ctx = bdrv_co_enter(bs); blk_truncate(blk, size, false, PREALLOC_MODE_OFF, 0, errp); bdrv_co_leave(bs, old_ctx); - bdrv_drained_end(bs); bdrv_co_lock(bs); + bdrv_drained_end(bs); blk_unref(blk); bdrv_co_unlock(bs); } -- 2.29.2 If bdrv_co_yield_to_drain() is called for draining a block node that runs in a different AioContext, it keeps that AioContext locked while it yields and schedules a BH in the AioContext to do the actual drain. As long as executing the BH is the very next thing that the event loop of the node's AioContext does, this actually happens to work, but when it tries to execute something else that wants to take the AioContext lock, it will deadlock. (In the bug report, this other thing is a virtio-scsi device running virtio_scsi_data_plane_handle_cmd().) Instead, always drop the AioContext lock across the yield and reacquire it only when the coroutine is reentered. The BH needs to unconditionally take the lock for itself now. This fixes the 'block_resize' QMP command on a block node that runs in an iothread. Cc: qemu-stable@nongnu.org Fixes: eb94b81a94bce112e6b206df846c1551aaf6cab6 Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1903511 Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201203172311.68232-4-kwolf@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- block/io.c | 41 ++++++++++++++++++++++++----------------- 1 file changed, 24 insertions(+), 17 deletions(-) diff --git a/block/io.c b/block/io.c index XXXXXXX..XXXXXXX 100644 --- a/block/io.c +++ b/block/io.c @@ -XXX,XX +XXX,XX @@ static void bdrv_co_drain_bh_cb(void *opaque) if (bs) { AioContext *ctx = bdrv_get_aio_context(bs); - AioContext *co_ctx = qemu_coroutine_get_aio_context(co); - - /* - * When the coroutine yielded, the lock for its home context was - * released, so we need to re-acquire it here. If it explicitly - * acquired a different context, the lock is still held and we don't - * want to lock it a second time (or AIO_WAIT_WHILE() would hang). - */ - if (ctx == co_ctx) { - aio_context_acquire(ctx); - } + aio_context_acquire(ctx); bdrv_dec_in_flight(bs); if (data->begin) { assert(!data->drained_end_counter); @@ -XXX,XX +XXX,XX @@ static void bdrv_co_drain_bh_cb(void *opaque) data->ignore_bds_parents, data->drained_end_counter); } - if (ctx == co_ctx) { - aio_context_release(ctx); - } + aio_context_release(ctx); } else { assert(data->begin); bdrv_drain_all_begin(); @@ -XXX,XX +XXX,XX @@ static void coroutine_fn bdrv_co_yield_to_drain(BlockDriverState *bs, int *drained_end_counter) { BdrvCoDrainData data; + Coroutine *self = qemu_coroutine_self(); + AioContext *ctx = bdrv_get_aio_context(bs); + AioContext *co_ctx = qemu_coroutine_get_aio_context(self); /* Calling bdrv_drain() from a BH ensures the current coroutine yields and * other coroutines run if they were queued by aio_co_enter(). */ assert(qemu_in_coroutine()); data = (BdrvCoDrainData) { - .co = qemu_coroutine_self(), + .co = self, .bs = bs, .done = false, .begin = begin, @@ -XXX,XX +XXX,XX @@ static void coroutine_fn bdrv_co_yield_to_drain(BlockDriverState *bs, if (bs) { bdrv_inc_in_flight(bs); } - replay_bh_schedule_oneshot_event(bdrv_get_aio_context(bs), - bdrv_co_drain_bh_cb, &data); + + /* + * Temporarily drop the lock across yield or we would get deadlocks. + * bdrv_co_drain_bh_cb() reaquires the lock as needed. + * + * When we yield below, the lock for the current context will be + * released, so if this is actually the lock that protects bs, don't drop + * it a second time. + */ + if (ctx != co_ctx) { + aio_context_release(ctx); + } + replay_bh_schedule_oneshot_event(ctx, bdrv_co_drain_bh_cb, &data); qemu_coroutine_yield(); /* If we are resumed from some other event (such as an aio completion or a * timer callback), it is a bug in the caller that should be fixed. */ assert(data.done); + + /* Reaquire the AioContext of bs if we dropped it */ + if (ctx != co_ctx) { + aio_context_acquire(ctx); + } } void bdrv_do_drained_begin_quiesce(BlockDriverState *bs, -- 2.29.2