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[PATCH 0/6] block: add block-dirty-bitmap-populate job
From: |
John Snow |
Subject: |
[PATCH 0/6] block: add block-dirty-bitmap-populate job |
Date: |
Mon, 24 Feb 2020 19:56:35 -0500 |
Hi,
This is a new (very small) block job that writes a pattern into a
bitmap. The only pattern implemented is the top allocation information.
This can be used to "recover" an incremental bitmap chain if an external
snapshot was taken without creating a new bitmap first: any writes made
to the image will be reflected by the allocation status and can be
written back into a bitmap.
This is useful for e.g. libvirt managing backup chains if a user creates
an external snapshot outside of libvirt.
Patches 1-2: The new job.
Patch 3: iotest prerequisite
Patch 4-5: completely optional cleanup.
Patch 6: Test.
John Snow (6):
block: add bitmap-populate job
qmp: expose block-dirty-bitmap-populate
iotests: move bitmap helpers into their own file
iotests: add hmp helper with logging
qmp.py: change event_wait to use a dict
iotests: add 287 for block-dirty-bitmap-populate
qapi/block-core.json | 66 +
qapi/job.json | 2 +-
qapi/transaction.json | 2 +
include/block/block_int.h | 21 +
block/bitmap-alloc.c | 207 ++
blockdev.c | 78 +
blockjob.c | 3 +-
block/Makefile.objs | 1 +
python/qemu/machine.py | 10 +-
tests/qemu-iotests/040 | 12 +-
tests/qemu-iotests/257 | 110 +-
tests/qemu-iotests/260 | 5 +-
tests/qemu-iotests/287 | 233 ++
tests/qemu-iotests/287.out | 4544 +++++++++++++++++++++++++++++++++
tests/qemu-iotests/bitmaps.py | 131 +
tests/qemu-iotests/group | 1 +
tests/qemu-iotests/iotests.py | 34 +-
17 files changed, 5321 insertions(+), 139 deletions(-)
create mode 100644 block/bitmap-alloc.c
create mode 100755 tests/qemu-iotests/287
create mode 100644 tests/qemu-iotests/287.out
create mode 100644 tests/qemu-iotests/bitmaps.py
--
2.21.1
- [PATCH 0/6] block: add block-dirty-bitmap-populate job,
John Snow <=