snapshot: Fix restore rollback to reassign snap volume ids to bricks

Added further checks to ensure we do not go beyond prevalidate
when trying to restore a snapshot which has a nfs-gansha conf
file, in a cluster when nfs-ganesha is not enabled

The error message for the particular scenario is:
"Snapshot(<snapname>) has a nfs-ganesha export conf
file. cluster.enable-shared-storage and nfs-ganesha
should be enabled before restoring this snapshot."

> Reviewed-on: http://review.gluster.org/16116
> Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
> Smoke: Gluster Build System <jenkins@build.gluster.org>
> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>

Change-Id: I1b87e9907e0a5e162f26ef1ca89fe76e8da8610f
BUG: 1405909
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: https://review.gluster.org/16195
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: jiffin tony Thottan <jthottan@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Aravinda VK <avishwan@redhat.com>

0 files changed, 0 insertions, 0 deletions