diff options
| author | Alberto Garcia <berto@igalia.com> | 2021-06-10 15:05:36 +0300 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2021-06-29 16:51:00 +0200 |
| commit | ecd30d2d978493f2280798f4c48f674d6290efa4 (patch) | |
| tree | 9e2475195a43d4b017c466d605e87b8d652b1ce3 /include | |
| parent | 3d0e8743f0fca85e2d9b98924dcedaa5ab79db4d (diff) | |
block: Allow changing bs->file on reopen
When the x-blockdev-reopen was added it allowed reconfiguring the
graph by replacing backing files, but changing the 'file' option was
forbidden. Because of this restriction some operations are not
possible, notably inserting and removing block filters.
This patch adds support for replacing the 'file' option. This is
similar to replacing the backing file and the user is likewise
responsible for the correctness of the resulting graph, otherwise this
can lead to data corruption.
Signed-off-by: Alberto Garcia <berto@igalia.com>
[vsementsov: bdrv_reopen_parse_file_or_backing() is modified a lot]
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-9-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/block/block.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/block/block.h b/include/block/block.h index d28022e761..7ec77ecb1a 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -209,6 +209,7 @@ typedef struct BDRVReopenState { BlockdevDetectZeroesOptions detect_zeroes; bool backing_missing; BlockDriverState *old_backing_bs; /* keep pointer for permissions update */ + BlockDriverState *old_file_bs; /* keep pointer for permissions update */ QDict *options; QDict *explicit_options; void *opaque; |