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block: package rollback code in qmp_transaction()

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Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Wenchao Xia 2013-05-08 18:25:15 +08:00 • committed by Stefan Hajnoczi
parent 3b0047e86a
commit 96b86bf72d
1 changed files with 8 additions and 3 deletions
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11
blockdev.c
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@ -882,6 +882,13 @@ static void external_snapshot_commit(BlkTransactionStates *states)
NULL); NULL);
} }
static void external_snapshot_abort(BlkTransactionStates *states)
{
if (states->new_bs) {
bdrv_delete(states->new_bs);
}
}
/* /*
* 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail
* then we do not pivot any of the devices in the group, and abandon the * then we do not pivot any of the devices in the group, and abandon the
@ -939,9 +946,7 @@ delete_and_fail:
* the original bs for all images * the original bs for all images
*/ */
QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) { QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) {
if (states->new_bs) { external_snapshot_abort(states);
bdrv_delete(states->new_bs);
}
} }
exit: exit:
QSIMPLEQ_FOREACH_SAFE(states, &snap_bdrv_states, entry, next) { QSIMPLEQ_FOREACH_SAFE(states, &snap_bdrv_states, entry, next) {