v3: Rebase on master, small qapi docs improvements suggested by Markus
There several improvements to fleecing scheme:
1. support bitmap in copy-before-write filter
2. introduce fleecing block driver, which opens the door for a lot of
image fleecing improvements.
See "block: introduce fleecing block driver" commit message for
details.
3. support "push backup with fleecing" scheme, when backup job is a
client of common fleecing scheme. That helps when writes to final
backup target are slow and we don't want guest writes hang waiting
for copy-before-write operations to final target.
Vladimir Sementsov-Ogievskiy (19):
block/block-copy: move copy_bitmap initialization to
block_copy_state_new()
block/dirty-bitmap: bdrv_merge_dirty_bitmap(): add return value
block/block-copy: block_copy_state_new(): add bitmap parameter
block/copy-before-write: add bitmap open parameter
block/block-copy: add block_copy_reset()
block: intoduce reqlist
block/dirty-bitmap: introduce bdrv_dirty_bitmap_status()
block/reqlist: add reqlist_wait_all()
block: introduce FleecingState class
block: introduce fleecing block driver
block/copy-before-write: support fleecing block driver
block/block-copy: add write-unchanged mode
block/copy-before-write: use write-unchanged in fleecing mode
iotests/image-fleecing: add test-case for fleecing format node
iotests.py: add qemu_io_pipe_and_status()
iotests/image-fleecing: add test case with bitmap
block: blk_root(): return non-const pointer
qapi: backup: add immutable-source parameter
iotests/image-fleecing: test push backup with fleecing
qapi/block-core.json | 58 ++++-
block/fleecing.h | 151 +++++++++++
include/block/block-copy.h | 4 +-
include/block/block_int.h | 1 +
include/block/dirty-bitmap.h | 4 +-
include/block/reqlist.h | 75 ++++++
include/qemu/hbitmap.h | 11 +
include/sysemu/block-backend.h | 2 +-
block/backup.c | 61 ++++-
block/block-backend.c | 2 +-
block/block-copy.c | 157 +++++-------
block/copy-before-write.c | 70 +++++-
block/dirty-bitmap.c | 15 +-
block/fleecing-drv.c | 261 ++++++++++++++++++++
block/fleecing.c | 182 ++++++++++++++
block/monitor/bitmap-qmp-cmds.c | 5 +-
block/replication.c | 2 +-
block/reqlist.c | 84 +++++++
blockdev.c | 1 +
util/hbitmap.c | 36 +++
MAINTAINERS | 7 +-
block/meson.build | 3 +
tests/qemu-iotests/iotests.py | 4 +
tests/qemu-iotests/tests/image-fleecing | 178 ++++++++++---
tests/qemu-iotests/tests/image-fleecing.out | 223 ++++++++++++++++-
25 files changed, 1441 insertions(+), 156 deletions(-)
create mode 100644 block/fleecing.h
create mode 100644 include/block/reqlist.h
create mode 100644 block/fleecing-drv.c
create mode 100644 block/fleecing.c
create mode 100644 block/reqlist.c
--
2.31.1
