samba - May 2010 - Samba reporting only ~4G on a much larger filesystem

I tried this on the IRC channel and got not response...

I have a 2.2TB filesystem.  The filesystem itself is a stornext (Quantum)
filesystem, which in the /etc/fstab is type cvfs.

When a client mounts the samba share, it only reports ~4GB (3.9 or 3.7 GB) total
space.  We have a third party app, which will/can not be updated which checks
the disk space available and fails if it's not enough.  Consequently, the
third party app is failing since 3.7 or 3.9 GB is not enough.  This is happening
on both windows and Linux clients.

I've searched the FAQ, I've searched the list archives and I've
searched the web and I've come up with two potential suspects, but I believe
I've ruled those out.  One is a 32 bit limit (4GB).  These are 64 bit boxes
(both the server and the clients).  The other was a limit with FAT32.  These are
not FAT32 filesystems, they are cvfs filesystem which most definitely do not
have a 4GB limit.

Samba Server specs
=================OS: CentOS or RHEL 5.2
    2.6.18-92.el5 #1 SMP Tue Apr 29 13:16:15 EDT 2008 x86_64 x86_64 x86_64
GNU/Linux
Samba RPMs
    samba-3.0.28-0.el5.8
    samba-client-3.0.28-0.el5.8
    system-config-samba-1.2.39-1.el5
    samba-common-3.0.28-0.el5.8

Any idea of what's amiss here?

-- 
John (Doc) Soliday
CNN Best Server Ops