[PATCH v3 0/8] qemu-img: rebase: add compression support

[Andrey Drobyshev]

v2 --> v3:
 * Patch 3/8: fixed logic in the if statement, so that we align on blk
   when blk_old_backing == NULL;
 * Patch 4/8: comment fix;
 * Patch 5/8: comment fix; dropped redundant "if (blk_new_backing)"
   statements.

v2: https://lists.nongnu.org/archive/html/qemu-block/2023-09/msg00448.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, 752 insertions(+), 37 deletions(-)
 create mode 100755 tests/qemu-iotests/314
 create mode 100644 tests/qemu-iotests/314.out

-- 
2.39.3