We have a problem where used space on our aggregate does not equal the total sum of used space for all volumes.
Filer1> df -Ag
Aggregate total used avail capacity
aggr0 9699GB 6042GB 3657GB 62%
aggr0/.snapshot 0GB 0GB 0GB ---%
Filter1> df -sg
Filesystem used saved %saved
/vol/vol0/ 5GB 0GB 0%
/vol/vol_vmware_nfs/ 8456GB 2058GB 20%
As you can see there is approx 8.4TB of space used by all (thin provisioned) volumes, but only 6TB used on the aggregate.
Even taking away the 2TB of de-dupe savings, there is still nearly 500GB that appears to have gone "missing". Can anyone explain what might be going on here?
I have checked and there are no snapshots currently on the volume.