[Qemu-devel] [PATCH V6 0/3] Implement sync modes for drive-backup.

[Ian Main]

This patch adds sync modes on top of the work that Stefan Hajnoczi has done.

These patches apply on kevin/block.

Hopefully all is in order as this is my first QEMU patch.  Many thanks to
Stephan and Fam Zheng for their help.

V2:

- No longer poll, instead use qemu_coroutine_yield().
- Use bdrv_co_is_allocated().
- Much better SYNC_MODE_NONE test.

V3:

- A few style fixes.
- Better commit message explaining how TOP and NONE operate.
- Verified using checkpatch.pl.

V4:

- Add patch to use the source as a backing hd during backup.
- Add patch to default sync mode none to qcow2.

V5:

- Fix qcow2 patch.  Forgot to git add final version.

V6:

- Default to requiring 'format' when mode is absolute-paths.
- Removed one bad hunk that was misapplying.
- Fixed docs, examples and tests to match changes.
- Added tests for format bad/missing.
- Added bdrv_set_in_use() to target.
- Default to qcow2 patch not required.

Ian Main (3):
  Implement sync modes for drive-backup.
  Add tests for sync modes 'TOP' and 'NONE'
  Add backing drive while performing backup.

 block/backup.c                | 107 +++++++++++++++++++++++++++++------------
 blockdev.c                    |  36 +++++++++-----
 include/block/block_int.h     |   4 +-
 qapi-schema.json              |   4 +-
 qmp-commands.hx               |   2 +
 tests/qemu-iotests/055        | 108 +++++++++++++++++++++++++++++++++++++-----
 tests/qemu-iotests/055.out    |   4 +-
 tests/qemu-iotests/group      |   2 +-
 tests/qemu-iotests/iotests.py |   5 ++
 9 files changed, 211 insertions(+), 61 deletions(-)

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1.8.1.4