[lustre-discuss] Quota problem after upgrade from 2.1.6 to 2.5.3

[Götz Waschk]

Dear Lustre experts,

I have upgraded a lustre file system from 2.1.6 to 2.5.3. It went
smoothly, but there's a quota problem. It seems the kbytes used are by
a pretty large value:

du /lustre/fs17/someuser gives me 1695469716. The output of lfs quota
-v -u someuser /lustre/fs17 is:
Disk quotas for user someuser (uid 17300):
     Filesystem  kbytes   quota   limit   grace   files   quota   limit   grace
/lustre/fs17/
                2558638436       0       0       -  224494       0
  0       -
fs17-MDT0000_UUID
                  46948       -       0       -  224494       -       0       -
fs17-OST0000_UUID
                494111600       -       0       -       -       -
 -       -
fs17-OST0001_UUID
                457182260       -       0       -       -       -
 -       -
fs17-OST0002_UUID
                402034508       -       0       -       -       -
 -       -
fs17-OST0003_UUID
                277070248       -       0       -       -       -
 -       -
fs17-OST0004_UUID
                392850908       -       0       -       -       -
 -       -
fs17-OST0005_UUID
                535341964       -       0       -       -       -
 -       -
Total allocated inode limit: 0, total allocated block limit: 0

The number of files matches exactly the output of find -type f, but
the kbytes are wrong. I have checked the obvious, the user doesn't own
any files outside of his directory. Any idea on what to check?

Regards,Götz Waschk