snapshot: Fix parent volinfo corruption in snapshot restore

    Backport of http://review.gluster.org/#/c/13282/

Remove parent_volinfo irrespective of success or failure
of glusterd_lvm_snapshot_remove(). This prevents the
duplication of the volinfo after the execution of
glusterd_snapshot_restore().

When commit fails on originator node, we don't perform
commit on the other nodes, as a result we don't have a
backup of /var/lib/glusterd/vols/<volname> in the
GLUSTERD_TRASH in other nodes. But in the postvalidate
we try to restore from GLUSTED_TRASH and end up cleaning
up /var/lib/glusterd/vols/<volname>. Hence moved
glusterd_snapshot_backup_vol() from commit to prevalidate,
so that the backup is always available when a cleanup is
needed.

Change-Id: Icd471b23faf02bad680b9a1aadc4a0175f7cce8b
BUG: 1301030
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/13282
Smoke: Gluster Build System <jenkins@build.gluster.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
(cherry picked from commit 3f78b6b3dc6376945a1b1a7c4af16103901ab746)
Reviewed-on: http://review.gluster.org/13548

0 files changed, 0 insertions, 0 deletions