[glusterd/snapshot]: snapshot create CLI msg correction

Uniformity in cli output while creating snapshots

Change-Id: Ic0fd09bbde9a1f55c441e1745f93c588d2e4c1a1
BUG: 1090041
Signed-off-by: Joseph Fernandes <josferna@redhat.com>
Reviewed-on: http://review.gluster.org/7518
Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
glusterd/snapshot : Fix for snapshot delete failure

Problem : snapshot delete used to fail when executed in loop,
as there was race between process kill and umount.

Solution : Before an umount is issued check if the process
is still running, If so then issue for process termination.
Give three tries for doing umount operation

Change-Id: I7f4315e5d7d4a156dd513ec77443ead6ccd37b2e
BUG: 1090449
Signed-off-by: Vijaikumar M <vmallika@redhat.com>
Signed-off-by: Sachin Pandit <spandit@redhat.com>
Reviewed-on: http://review.gluster.org/7532
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
[glusterd/snapshot] snapshot create force option

Implement force option in snapshot create i.e

1) Creation of snapshot fails if the original volume
bricks are down
2) With a force option creation of snapshot will continue
even if the original volume bricks are down.

This was the fix for bugs 1089527 and 1083502

Change-Id: I8de0242adf8ee0af00db9fa8701d86fabc12e7fc
BUG: 1090042
Signed-off-by: Joseph Fernandes <josferna@redhat.com>
Reviewed-on: http://review.gluster.org/7520
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>