Overview :
Gluster Platform was Composed of 3 Gluster Server Nodes and 20 Clients.
Add A Fourth Server Node And remonuted al cclients for changes to take effect.

After That, Trying TO access A file via it's full path results in "no such file or directory".Only After I Access The File Manually by CD'ing to the dirs one by one , the file becomes accessible via it's full path on all clients

In Order To Temporary Resolve This , I Did ls -lR on the Directory Tree Mount-Point.

Steps to Reproduce:
1) Create A  Directory Tree with some files and subdirs , ( no more then 3 levels)
on top of 2 GlusterFs Server Nodes.
2) Add a 3rd Server Node.Make Changes to the config file and unmount and mount on The Client To see the Extra Space Added.
3) Try to stat ( ls -l ) a leaf file that existed previous to the storage expansion.

Expected Results :
File Info

Actual Results :
No Such File or Directory . Accessing The File by Cd'ing to the dirs , each level at a time will give proper results  and make the file available to stat() via it's full path on all clients

This Happend on Glusterfs 3.0.3 on Linux x86_64 , CentOS 5.2 , 2.6.18-92