Description of problem: After adding a new node to master cluster, snap restore fails due to missing geo-replication folder in the snap directory of the new brick.


Version-Release number of selected component (if applicable):
glusterfs-3.6.0.42


How reproducible:Always


Steps to Reproduce:
1. Create and start a master slave geo-rep session
2. Stop the session.
3. Take a snapshot.
4. Add a node to the master cluster.
5. Try to perform restore to the snapshot.


Actual results:

Restore fails because geo-replication folder in snap folder is not copied to the new node.

Expected results:

Restore should not fail. 

Additional info:

# gluster vol stop test_vol && gluster snap restore
snap1 && gluster vol start test_vol
Stopping volume will make its data inaccessible. Do you want to
continue? (y/n) y
volume stop: test_vol: success
Restore operation will replace the original volume with the snapshotted
volume. Do you still want to continue? (y/n) y
snapshot restore: failed: Commit failed on 10.70.42.33. Please check log
file for details.
Snapshot command failed



Source logs
##################
[2015-01-09 12:17:52.190749] D
[glusterd-utils.c:1246:glusterd_volume_brickinfo_get] 0-management:
Returning 0
[2015-01-09 12:17:52.191195] D
[glusterd-utils.c:1335:glusterd_volinfo_find] 0-management: Volume
test_vol found
[2015-01-09 12:17:52.191207] D
[glusterd-utils.c:1342:glusterd_volinfo_find] 0-management: Returning 0
[2015-01-09 12:17:52.191289] E
[glusterd-snapshot-utils.c:2899:glusterd_copy_folder] 0-management:
Unable to open
/var/lib/glusterd/snaps/snap1/geo-replication/test_vol_10.x.x.x_slave_vol
[2015-01-09 12:17:52.191309] E
[glusterd-snapshot-utils.c:3178:glusterd_restore_geo_rep_files]
0-management: Could not copy
/var/lib/glusterd/snaps/snap1/geo-replication/test_vol_10.x.x.x_slave_vol
to /var/l
ib/glusterd/geo-replication/test_vol_10.x.x.x_slave_vol
[2015-01-09 12:17:52.191324] E
[glusterd-snapshot.c:8221:gd_restore_snap_volume] 0-management: Failed
to restore geo-rep files for snap snap1
[2015-01-09 12:17:52.191338] D
[glusterd-utils.c:732:glusterd_volume_brickinfos_delete] 0-management:
Returning 0
[2015-01-09 12:17:52.191348] D [store.c:458:gf_store_handle_destroy] 0-:
Returning 0
[2015-01-09 12:17:52.191355] D
[glusterd-utils.c:776:glusterd_volinfo_delete] 0-management: Returning 0
[2015-01-09 12:17:52.191362] E
[glusterd-snapshot.c:836:glusterd_snapshot_restore] 0-management: Failed
to restore snap for snap1
[2015-01-09 12:17:52.191368] W
[glusterd-snapshot.c:6900:glusterd_snapshot] 0-management: Failed to
restore snapshot
[2015-01-09 12:17:52.191375] W
[glusterd-mgmt.c:224:gd_mgmt_v3_commit_fn] 0-management: Snapshot Commit
Failed
[2015-01-09 12:17:52.191381] D
[glusterd-mgmt.c:235:gd_mgmt_v3_commit_fn] 0-management: OP = 28.
Returning -1
[2015-01-09 12:17:52.191388] E
[glusterd-mgmt-handler.c:567:glusterd_handle_commit_fn] 0-management:
commit failed on operation Snapshot