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block/mirror: don't install backing chain on abort 

In cases where we abort the block/mirror job, there's no point in
installing the new backing chain before we finish aborting.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 20180906130225.5118-6-jsnow@redhat.com
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
John Snow 2018-09-06 09:02:14 -04:00 committed by Max Reitz
parent 22dffcbec6
commit c2924ceaa7
1 changed files with 1 additions and 1 deletions
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2
block/mirror.c
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@ -642,7 +642,7 @@ static void mirror_exit(Job *job)
* required before it could become a backing file of target_bs. */
bdrv_child_try_set_perm(mirror_top_bs->backing, 0, BLK_PERM_ALL,
&error_abort);
if (s->backing_mode == MIRROR_SOURCE_BACKING_CHAIN) {
if (ret == 0 && s->backing_mode == MIRROR_SOURCE_BACKING_CHAIN) {
BlockDriverState *backing = s->is_none_mode ? src : s->base;
if (backing_bs(target_bs) != backing) {
bdrv_set_backing_hd(target_bs, backing, &local_err);