Bug 1115951

Description of problem:
========================
In a distribute-replicate setup, after enabling "uss" and from tried to "cd .snaps" from fuse and nfs mount. 

On nfs , "ls -l" returned "Remote I/O Error" . Hence performed "strace ls -l" . 

disabled "uss" and once again enabled "uss". 

One of the snaps log file was completely filled with the following message:

[2014-07-02 13:15:12.669649] W [glfs-handleops.c:1079:glfs_h_create_from_handle] 0-meta-autoload: inode refresh of 56878e92-e104-48e9-97ef-e21e775627ec failed: No such file or directory

[2014-07-02 13:15:12.669687] E [snapview-server.c:1172:svs_lookup_gfid] 0-rep-snapview-server: failed to do lookup and get the handle on the snapshot (null) (path: <gfid:56878e92-e104-48e9-97ef-e21e775627ec>, gfid: 56878e92-e104-48e9-97ef-e21e775627ec)


Version-Release number of selected component (if applicable):
=============================================================
glusterfs 3.6.0.22 built on Jun 23 2014 10:33:07

How reproducible:
=================
Tried once

Steps to Reproduce:
====================
1.Create a distribute-replicate volume. Start the volume. set the "features.uss" option to "enable"

2. Create nfs mount. Create few files/dirs. 

3. Create a snapshot .

4. set the "features.uss" option to "enable"

5. From nfs mount, cd ".snaps" directory.

6. ls -l ".snaps"

7. cd mount

8. disable "features.uss"

9. Create files/dirs. 

10. set the "features.uss" option to "enable"

11. ls -l ".snaps"


Actual results:
====================
root@mia [Jul-03-2014-17:05:09] >grep -e "0-rep-snapview-server: failed to do lookup and get the handle on the snapshot (null) " /var/log/glusterfs/snap2-8b4330e3-5a71-4b1a-84bf-455924345d98.log | wc
14752232 309796886 3732314859

Additional Info:
=====================
SOS Reports: http://rhsqe-repo.lab.eng.blr.redhat.com/bugs_necessary_info/1115944/

Log file : http://rhsqe-repo.lab.eng.blr.redhat.com/bugs_necessary_info/1115944/mia_mgmt_node/snap2-8b4330e3-5a71-4b1a-84bf-455924345d98.log