v1 --> v2:
* Choose proper BlockBackend when aligning buf_old;
* Add new patch ("qemu-img: add chunk size parameter to
compare_buffers()");
* Rework write alignment logic; now writes are aligned to either
subcluster or cluster size, depending on whether compressionis enabled;
* Add new patch ("iotests/{024, 271}: add testcases for qemu-img
rebase");
* Add another compressed rebase testcase for images having subclusters.
v1: https://lists.nongnu.org/archive/html/qemu-block/2023-06/msg00068.html
NOTE: compressed rebase testcase for subclusters assume "compressed"
field in "qemu-img map" output. This series is currently in the block
branch and is likely to be merged into master soon:
https://lists.nongnu.org/archive/html/qemu-devel/2023-09/msg01489.html
Andrey Drobyshev (8):
qemu-img: rebase: stop when reaching EOF of old backing file
qemu-iotests: 024: add rebasing test case for overlay_size >
backing_size
qemu-img: rebase: use backing files' BlockBackend for buffer alignment
qemu-img: add chunk size parameter to compare_buffers()
qemu-img: rebase: avoid unnecessary COW operations
iotests/{024, 271}: add testcases for qemu-img rebase
qemu-img: add compression option to rebase subcommand
iotests: add tests for "qemu-img rebase" with compression
docs/tools/qemu-img.rst | 6 +-
qemu-img-cmds.hx | 4 +-
qemu-img.c | 136 +++++++++++++++++++++++-------
tests/qemu-iotests/024 | 117 ++++++++++++++++++++++++++
tests/qemu-iotests/024.out | 73 ++++++++++++++++
tests/qemu-iotests/271 | 131 +++++++++++++++++++++++++++++
tests/qemu-iotests/271.out | 82 ++++++++++++++++++
tests/qemu-iotests/314 | 165 +++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/314.out | 75 +++++++++++++++++
9 files changed, 753 insertions(+), 36 deletions(-)
create mode 100755 tests/qemu-iotests/314
create mode 100644 tests/qemu-iotests/314.out
--
2.39.3