diff options
| author | Denis V. Lunev <den@openvz.org> | 2015-11-19 09:42:03 +0300 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2015-11-19 11:50:00 +0100 |
| commit | 9b00ea376d42e543feb12d7ce5435366d01aab1b (patch) | |
| tree | 13e31dd2967caec0bca0b7d05a8c7e7ea2e3ee0f /block/snapshot.c | |
| parent | 25af925fffc29f2e4c05aee10c61c823c4cdf398 (diff) | |
| download | qemu-9b00ea376d42e543feb12d7ce5435366d01aab1b.tar.gz qemu-9b00ea376d42e543feb12d7ce5435366d01aab1b.tar.bz2 qemu-9b00ea376d42e543feb12d7ce5435366d01aab1b.zip | |
snapshot: create bdrv_all_delete_snapshot helper
to delete snapshots from all loaded block drivers.
The patch also ensures proper locking.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Tested-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'block/snapshot.c')
| -rw-r--r-- | block/snapshot.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/block/snapshot.c b/block/snapshot.c index ed0422df9f..61a6ad12dc 100644 --- a/block/snapshot.c +++ b/block/snapshot.c @@ -381,3 +381,25 @@ bool bdrv_all_can_snapshot(BlockDriverState **first_bad_bs) *first_bad_bs = bs; return ok; } + +int bdrv_all_delete_snapshot(const char *name, BlockDriverState **first_bad_bs, + Error **err) +{ + int ret = 0; + BlockDriverState *bs = NULL; + QEMUSnapshotInfo sn1, *snapshot = &sn1; + + while (ret == 0 && (bs = bdrv_next(bs))) { + AioContext *ctx = bdrv_get_aio_context(bs); + + aio_context_acquire(ctx); + if (bdrv_can_snapshot(bs) && + bdrv_snapshot_find(bs, snapshot, name) >= 0) { + ret = bdrv_snapshot_delete_by_id_or_name(bs, name, err); + } + aio_context_release(ctx); + } + + *first_bad_bs = bs; + return ret; +} |