Description of problem:
-----------------------
Sharded-Gluster volume is used as a backend for RHEV data domain.
This domain was providing additional disks to the app vms.
This disk was formatted with XFS and contained 308 files.

This gluster volume is geo-replicated and storage (data) domain is re-created at the slave location.

When this disk was attached to the VM, there were no filesystems available on it

Version-Release number of selected component (if applicable):
-------------------------------------------------------------
RHGS 3.1.3 nightly ( glusterfs-3.7.1-3.el7rhgs )
RHEV 3.6.5.3-0.1.el6

How reproducible:
-----------------
Always/Consistent

Steps to Reproduce:
-------------------
1. Create a RHEV Data domain backed by sharded-gluster volume 
2. Create disks from this domain and attach it to the app vm
3. Format the disk with XFS, mount it and add some files to the mount
4. Create geo-rep checkpoint & Geo-replicate the sharded-gluster volume
5. Restore the data domain on the slave location and attach the disks to the VM

Actual results:
---------------
No filesystem found on the disks those are attached to the VM

Expected results:
-----------------
The filesystems and files should be intact