From nobody Sat Nov 1 22:23:28 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1509094882124402.4506405389228; Fri, 27 Oct 2017 02:01:22 -0700 (PDT) Received: from localhost ([::1]:56315 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e80Vw-0005sb-B9 for importer@patchew.org; Fri, 27 Oct 2017 05:01:16 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59315) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e80T2-0003v2-9I for qemu-devel@nongnu.org; Fri, 27 Oct 2017 04:58:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e80T1-0001gj-Bv for qemu-devel@nongnu.org; Fri, 27 Oct 2017 04:58:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58158) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e80Sv-0001c7-F2; Fri, 27 Oct 2017 04:58:09 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5BB4061D09; Fri, 27 Oct 2017 08:58:08 +0000 (UTC) Received: from localhost (ovpn-204-81.brq.redhat.com [10.40.204.81]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B8F8F5FCA2; Fri, 27 Oct 2017 08:58:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 5BB4061D09 Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=jcody@redhat.com From: Jeff Cody To: qemu-block@nongnu.org Date: Fri, 27 Oct 2017 04:57:53 -0400 Message-Id: <8d958396d786b6777c71de1a2138e92ef2915649.1509094209.git.jcody@redhat.com> In-Reply-To: References: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Fri, 27 Oct 2017 08:58:08 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 1/4] block/vhdx.c: Don't blindly update the header X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, aik@ozlabs.ru, qemu-devel@nongnu.org, mreitz@redhat.com, stefanha@redhat.com, den@openvz.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The VHDX specification requires that before user data modification of the vhdx image, the VHDX header file and data GUIDs need to be updated. In vhdx_open(), if the image is set to RDWR, we go ahead and update the header. However, just because the image is set to RDWR does not mean we can go ahead and write at this point - specifically, if the QEMU run state is INMIGRATE, the underlying file BS may be set to inactive via the BDS open flag of BDRV_O_INACTIVE. Attempting to write under this condition will cause an assert in bdrv_co_pwritev(). We can alternatively latch the first time the image is written. And lo and behold, we do just that, via vhdx_user_visible_write() in vhdx_co_writev(). This means the call to vhdx_update_headers() in vhdx_open() is likely just vestigial, and can be removed. Reported-by: Alexey Kardashevskiy Signed-off-by: Jeff Cody --- block/vhdx.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/block/vhdx.c b/block/vhdx.c index 7ae4589879..9956933da6 100644 --- a/block/vhdx.c +++ b/block/vhdx.c @@ -1008,13 +1008,6 @@ static int vhdx_open(BlockDriverState *bs, QDict *op= tions, int flags, goto fail; } =20 - if (flags & BDRV_O_RDWR) { - ret =3D vhdx_update_headers(bs, s, false, NULL); - if (ret < 0) { - goto fail; - } - } - /* TODO: differencing files */ =20 return 0; --=20 2.13.6 From nobody Sat Nov 1 22:23:28 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1509094790133901.8230419281062; Fri, 27 Oct 2017 01:59:50 -0700 (PDT) Received: from localhost ([::1]:56304 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e80UJ-0004ij-Vi for importer@patchew.org; Fri, 27 Oct 2017 04:59:36 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59326) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e80T3-0003vh-1h for qemu-devel@nongnu.org; Fri, 27 Oct 2017 04:58:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e80T2-0001hk-BI for qemu-devel@nongnu.org; Fri, 27 Oct 2017 04:58:17 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56832) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e80Sz-0001ex-RA; Fri, 27 Oct 2017 04:58:13 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id BED8985540; Fri, 27 Oct 2017 08:58:12 +0000 (UTC) Received: from localhost (ovpn-204-81.brq.redhat.com [10.40.204.81]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 76D535EE0B; Fri, 27 Oct 2017 08:58:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com BED8985540 Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=jcody@redhat.com From: Jeff Cody To: qemu-block@nongnu.org Date: Fri, 27 Oct 2017 04:57:54 -0400 Message-Id: In-Reply-To: References: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Fri, 27 Oct 2017 08:58:12 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 2/4] block/parallels: code movement X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, aik@ozlabs.ru, qemu-devel@nongnu.org, mreitz@redhat.com, stefanha@redhat.com, den@openvz.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Code movement, to make subsequent patches simpler. Signed-off-by: Jeff Cody --- block/parallels.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/block/parallels.c b/block/parallels.c index 2b6c6e5709..fed199eccd 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -159,6 +159,18 @@ static int cluster_remainder(BDRVParallelsState *s, in= t64_t sector_num, return MIN(nb_sectors, ret); } =20 +static int parallels_update_header(BlockDriverState *bs) +{ + BDRVParallelsState *s =3D bs->opaque; + unsigned size =3D MAX(bdrv_opt_mem_align(bs->file->bs), + sizeof(ParallelsHeader)); + + if (size > s->header_size) { + size =3D s->header_size; + } + return bdrv_pwrite_sync(bs->file, 0, s->header, size); +} + static int64_t block_status(BDRVParallelsState *s, int64_t sector_num, int nb_sectors, int *pnum) { @@ -575,18 +587,6 @@ static int parallels_probe(const uint8_t *buf, int buf= _size, return 0; } =20 -static int parallels_update_header(BlockDriverState *bs) -{ - BDRVParallelsState *s =3D bs->opaque; - unsigned size =3D MAX(bdrv_opt_mem_align(bs->file->bs), - sizeof(ParallelsHeader)); - - if (size > s->header_size) { - size =3D s->header_size; - } - return bdrv_pwrite_sync(bs->file, 0, s->header, size); -} - static int parallels_open(BlockDriverState *bs, QDict *options, int flags, Error **errp) { --=20 2.13.6 From nobody Sat Nov 1 22:23:28 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1509094889246981.1557755300252; Fri, 27 Oct 2017 02:01:29 -0700 (PDT) Received: from localhost ([::1]:56316 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e80Vy-0005tx-DN for importer@patchew.org; Fri, 27 Oct 2017 05:01:18 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59394) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e80TC-00044e-QT for qemu-devel@nongnu.org; Fri, 27 Oct 2017 04:58:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e80T7-0001lW-2T for qemu-devel@nongnu.org; Fri, 27 Oct 2017 04:58:26 -0400 Received: from mx1.redhat.com ([209.132.183.28]:37666) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e80T4-0001jC-4s; Fri, 27 Oct 2017 04:58:18 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 21C16B0AA6; Fri, 27 Oct 2017 08:58:17 +0000 (UTC) Received: from localhost (ovpn-204-81.brq.redhat.com [10.40.204.81]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7313D60619; Fri, 27 Oct 2017 08:58:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 21C16B0AA6 Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=jcody@redhat.com From: Jeff Cody To: qemu-block@nongnu.org Date: Fri, 27 Oct 2017 04:57:55 -0400 Message-Id: <2f0114c773e8fb917a7a54acccfd2e2adfb6e066.1509094209.git.jcody@redhat.com> In-Reply-To: References: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Fri, 27 Oct 2017 08:58:17 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 3/4] block/parallels: Don't update header until the first actual write X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, aik@ozlabs.ru, qemu-devel@nongnu.org, mreitz@redhat.com, stefanha@redhat.com, den@openvz.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The on disk image format 'inuse' header field is updated blindly if the image is opened RDWR. This can cause problems if the QEMU runstate is set to INMIGRATE, at which point the underlying file is set to INACTIVE. This causes an assert in bdrv_co_pwritev(). Do something similar to what is done in VHDX; latch the first write, and update the header the first time we modify the file. Signed-off-by: Jeff Cody Reviewed-by: Denis V. Lunev --- block/parallels.c | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/block/parallels.c b/block/parallels.c index fed199eccd..c560e2fcf2 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -100,6 +100,8 @@ typedef struct BDRVParallelsState { unsigned int tracks; =20 unsigned int off_multiplier; + + bool first_write_latch; } BDRVParallelsState; =20 =20 @@ -317,6 +319,16 @@ static coroutine_fn int parallels_co_writev(BlockDrive= rState *bs, QEMUIOVector hd_qiov; int ret =3D 0; =20 + if (s->first_write_latch) { + s->first_write_latch =3D false; + qemu_co_mutex_lock(&s->lock); + ret =3D parallels_update_header(bs); + qemu_co_mutex_unlock(&s->lock); + } + if (ret < 0) { + return ret; + } + qemu_iovec_init(&hd_qiov, qiov->niov); =20 while (nb_sectors > 0) { @@ -416,6 +428,9 @@ static int parallels_check(BlockDriverState *bs, BdrvCh= eckResult *res, /* parallels_close will do the job right */ res->corruptions_fixed++; s->header_unclean =3D false; + /* set that a write has occurred, so that parallels_close() wi= ll + * update the inuse field in the header */ + s->first_write_latch =3D false; } } =20 @@ -597,6 +612,8 @@ static int parallels_open(BlockDriverState *bs, QDict *= options, int flags, Error *local_err =3D NULL; char *buf; =20 + s->first_write_latch =3D true; + bs->file =3D bdrv_open_child(NULL, options, "file", bs, &child_file, false, errp); if (!bs->file) { @@ -710,10 +727,6 @@ static int parallels_open(BlockDriverState *bs, QDict = *options, int flags, =20 if (flags & BDRV_O_RDWR) { s->header->inuse =3D cpu_to_le32(HEADER_INUSE_MAGIC); - ret =3D parallels_update_header(bs); - if (ret < 0) { - goto fail; - } } =20 s->bat_dirty_block =3D 4 * getpagesize(); @@ -741,7 +754,9 @@ static void parallels_close(BlockDriverState *bs) { BDRVParallelsState *s =3D bs->opaque; =20 - if (bs->open_flags & BDRV_O_RDWR) { + /* Only need to update the header, if we ever actually wrote to the + * image at all */ + if ((bs->open_flags & BDRV_O_RDWR) && !s->first_write_latch) { s->header->inuse =3D 0; parallels_update_header(bs); } --=20 2.13.6 From nobody Sat Nov 1 22:23:28 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1509094962802218.93324969363755; Fri, 27 Oct 2017 02:02:42 -0700 (PDT) Received: from localhost ([::1]:56319 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e80XF-0006mm-P1 for importer@patchew.org; Fri, 27 Oct 2017 05:02:37 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59395) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e80TC-00044h-RB for qemu-devel@nongnu.org; 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spf=fail smtp.mailfrom=jcody@redhat.com From: Jeff Cody To: qemu-block@nongnu.org Date: Fri, 27 Oct 2017 04:57:56 -0400 Message-Id: In-Reply-To: References: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Fri, 27 Oct 2017 08:58:19 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 4/4] qemu-iotests: update unsupported image formats in 194 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, aik@ozlabs.ru, qemu-devel@nongnu.org, mreitz@redhat.com, stefanha@redhat.com, den@openvz.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Test 194 checks for 'luks' to exclude as an unsupported format, However, most formats are unsupported, due to migration blockers. Rather than specifying a blacklist of unsupported formats, whitelist supported formats (specifically, qcow2, qed, raw, dmg). Signed-off-by: Jeff Cody --- tests/qemu-iotests/194 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/qemu-iotests/194 b/tests/qemu-iotests/194 index 8d973b440f..1d4214aca3 100755 --- a/tests/qemu-iotests/194 +++ b/tests/qemu-iotests/194 @@ -21,7 +21,7 @@ =20 import iotests =20 -iotests.verify_image_format(unsupported_fmts=3D['luks']) +iotests.verify_image_format(supported_fmts=3D['qcow2', 'qed', 'raw', 'dmg'= ]) iotests.verify_platform(['linux']) =20 with iotests.FilePath('source.img') as source_img_path, \ --=20 2.13.6