[Qemu-devel] [PATCH v6 00/29] qcow2: persistent dirty bitmaps

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

v6:
https://src.openvz.org/users/vsementsov/repos/qemu/browse?at=refs%2Ftags%2Fqcow2-bitmap-v6
based on block-next (https://github.com/XanClic/qemu/commits/block-next)

There are a lot of changes, reorderings and additions in comparement with v5.
One principal thing: now bitmaps are removed from image after loading instead
of marking them in_use. It is simpler and we do not need to store superfluous data.
Also, we are no more interested in command line interface to dirty bitmaps.
So it is dropped.  If someone needs it I can add it later.

Vladimir Sementsov-Ogievskiy (29):
  hbitmap: fix dirty iter
  tests: add hbitmap iter test
  block: fix bdrv_dirty_bitmap_granularity signature
  block/dirty-bitmap: add deserialize_ones func
  qcow2-bitmap: structs and consts
  qcow2-bitmap: add qcow2_read_bitmaps()
  qcow2-bitmap: add qcow2_bitmap_load()
  qcow2-bitmap: delete bitmap from qcow2 after load
  qcow2-bitmap: add qcow2_bitmap_store()
  qcow2-bitmap: add IN_USE flag
  qcow2-bitmap: check constraints
  qcow2: add qcow2_delete_bitmaps
  qcow2: add dirty bitmaps extension
  qcow2-bitmap: add qcow2_bitmap_load_check()
  block/dirty-bitmap: introduce persistent bitmaps
  block: add bdrv_load_dirty_bitmap()
  qcow2-bitmap: add autoclear bit
  qcow2-bitmap: disallow storing bitmap to other bs
  block/dirty-bitmap: add autoload field to BdrvDirtyBitmap
  qcow2-bitmap: add AUTO flag
  qcow2-bitmap: add EXTRA_DATA_COMPATIBLE flag
  qmp: add persistent flag to block-dirty-bitmap-add
  qmp: add autoload parameter to block-dirty-bitmap-add
  qcow2-bitmap: maintian BlockDirtyBitmap.autoload
  qapi: add md5 checksum of last dirty bitmap level to query-block
  iotests: test qcow2 persistent dirty bitmap
  qcow2-bitmap: delete in_use bitmaps on image load
  qcow2-bitmap: do not try reloading bitmaps
  qcow2-dirty-bitmap: refcounts

 block.c                       |    2 +
 block/Makefile.objs           |    2 +-
 block/dirty-bitmap.c          |  109 +++-
 block/qcow2-bitmap.c          | 1148 +++++++++++++++++++++++++++++++++++++++++
 block/qcow2-refcount.c        |   14 +-
 block/qcow2.c                 |  109 +++-
 block/qcow2.h                 |   59 +++
 blockdev.c                    |   30 +-
 include/block/block_int.h     |    9 +
 include/block/dirty-bitmap.h  |   18 +-
 include/qemu/hbitmap.h        |   23 +
 qapi/block-core.json          |    8 +-
 qmp-commands.hx               |    7 +-
 tests/qemu-iotests/160        |   87 ++++
 tests/qemu-iotests/160.out    |    5 +
 tests/qemu-iotests/group      |    1 +
 tests/qemu-iotests/iotests.py |    6 +
 tests/test-hbitmap.c          |   19 +
 util/hbitmap.c                |   28 +-
 19 files changed, 1669 insertions(+), 15 deletions(-)
 create mode 100644 block/qcow2-bitmap.c
 create mode 100755 tests/qemu-iotests/160
 create mode 100644 tests/qemu-iotests/160.out

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1.8.3.1