Description of problem:
Could not access the directory.

> ls -l dir 
??????????? ? ?        ?         ?            ? dir

How reproducible:
Setup a simple volume on your system.

Steps to Reproduce:
1.Mount the volume at mnt1
2.Mount the volume at another directory named mnt2
3.Open a console at mnt1, then 'mkdir dir; cd dir', stay there.
4.Open another console at mnt2, then 'rm -r dir; mkdir dir'(rebuild the dir)
5.Open third console at mnt1, then 'ls -l dir', you will see many '?'.
  
Actual results:


Expected results:


Additional info:
some error messages in log file:

[2012-08-23 08:41:10.613511] W [client-rpc-fops.c:2604:client3_3_lookup_cbk] 0-qe-client-0: remote operation failed: Stale NFS file handle. Path: /dir (92bb196c-6cb5-41af-a90f-2850f8d7ead6)
[2012-08-23 08:41:10.615441] W [client-rpc-fops.c:525:client3_3_stat_cbk] 0-qe-client-0: remote operation failed: No such file or directory
[2012-08-23 08:41:10.615468] W [fuse-bridge.c:590:fuse_attr_cbk] 0-glusterfs-fuse: 59: STAT() <gfid:92bb196c-6cb5-41af-a90f-2850f8d7ead6> => -1 (No such file or directory)
[2012-08-23 08:41:13.065630] W [client-rpc-fops.c:525:client3_3_stat_cbk] 0-qe-client-0: remote operation failed: No such file or directory