Setting up Ubuntu 10.04 server, the / disk space shows full under df, however the du does not show any of the space used. This has several mounts to Gluster FS'.

I have tried a forced FSCK and to no avail.

~# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md0              141G  132G     0 100% /
none                  3.0G  224K  3.0G   1% /dev
none                  3.0G     0  3.0G   0% /dev/shm
none                  3.0G   76K  3.0G   1% /var/run
none                  3.0G     0  3.0G   0% /var/lock
none                  3.0G     0  3.0G   0% /lib/init/rw
/dev/sdb1             9.0T  7.1T  1.9T  80% /brick1
/dev/sdb2             9.0T  7.9T  1.1T  88% /brick2
localhost:/sanvol09   385T  330T   56T  86% /mnt/sanvol09 <- Gluster FS uses local software to contact the DFS

I've attempted a tune2fs and same issue arises

# du -h --max-depth=1 --one-file-system /
4.0K    /selinux
0   /proc
47M /boot
31M /mnt
8.0K    /brick1
8.0K    /brick2
391M    /lib
4.0K    /opt
7.4M    /bin
0   /sys
379M    /var
5.6M    /etc
16K /lost+found
43M /root
4.0K    /srv
5.7M    /home
4.0K    /media
7.0M    /sbin
0   /dev
4.0K    /tmp
4.0K    /cdrom
631M    /usr
1.6G    /

more info

# df -ih
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/md0                9.0M     91K    8.9M    1% /
none                    746K     770    745K    1% /dev
none                    747K       1    747K    1% /dev/shm
none                    747K      32    747K    1% /var/run
none                    747K       1    747K    1% /var/lock
none                    747K       3    747K    1% /lib/init/rw
/dev/sdb1               583M    1.8M    581M    1% /brick1
/dev/sdb2               583M    1.9M    581M    1% /brick2
localhost:/sanvol09      25G     76M     25G    1% /mnt/sanvol09

The final question: df show's 100% used, and its not, any other known fixes?