-1374929331 drwxr-xr-x 1 root root 4096 Jun 19 06:41 foo
...
2920037965 drwxr-xr-x 2 root root 4096 Jun 19 15:41 foo
Ouch!
-1374929331 == (int32_t) 2920037965
'uname -m' from the ESXi host please! Is it a 32bit OS? Can you try 'gluster volume set bar nfs.enable-ino32 on' and retry?
Avati
