diff options
| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2022-03-03 20:43:37 +0100 |
|---|---|---|
| committer | Hanna Reitz <hreitz@redhat.com> | 2022-03-07 09:33:30 +0100 |
| commit | 5f3a3cd7f03aa82ea3a35019f0e5419bbfd0a194 (patch) | |
| tree | ad89076c8d9c4b53964df60b15c4e476766b1539 /qapi | |
| parent | 1f7252e868a72f1455f4c061e2105269fc3caf40 (diff) | |
block/copy-before-write: add bitmap open parameter
This brings "incremental" mode to copy-before-write filter: user can
specify bitmap so that filter will copy only "dirty" areas.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20220303194349.2304213-5-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/block-core.json | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index 9a5a3641d0..ffb7aea2a5 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -4171,11 +4171,19 @@ # # @target: The target for copy-before-write operations. # +# @bitmap: If specified, copy-before-write filter will do +# copy-before-write operations only for dirty regions of the +# bitmap. Bitmap size must be equal to length of file and +# target child of the filter. Note also, that bitmap is used +# only to initialize internal bitmap of the process, so further +# modifications (or removing) of specified bitmap doesn't +# influence the filter. (Since 7.0) +# # Since: 6.2 ## { 'struct': 'BlockdevOptionsCbw', 'base': 'BlockdevOptionsGenericFormat', - 'data': { 'target': 'BlockdevRef' } } + 'data': { 'target': 'BlockdevRef', '*bitmap': 'BlockDirtyBitmap' } } ## # @BlockdevOptions: |