It might be a result of running the zfs filesystem on the disks that the storage domain is using.  Any guidance is greatly appreciated. [root@jmini08 ~]# mount | grep data-pool data-pool on /data type zfs (rw,xattr) [root@jmini08 ~]# df -h /data Filesystem      Size  Used Avail Use% Mounted on data-pool       914G   51G  864G   6% /data [root@jmini08 ~]# du -h /data 17K /data/54ba461d-fbec-422e-9300-2f51640e5b2a/images 2.1M /data/54ba461d-fbec-422e-9300-2f51640e5b2a/dom_md 2.1M /data/54ba461d-fbec-422e-9300-2f51640e5b2a 2.2M /data [root@jmini08 ~]# zpool status   pool: data-pool  state: ONLINE   scan: none requested config: NAME        STATE     READ WRITE CKSUM data-pool   ONLINE       0     0     0  mirror-0  ONLINE       0     0     0    sda     ONLINE       0     0     0    sdb     ONLINE       0     0     0 errors: No known data errors --  urthmover On July 15, 2014 at 12:29:12 PM, urthmover (urthmover@gmail.com) wrote: All, I have a storage domain that reports having 863G free.  The Total Space is 913G.  Currently, there are no virtual machines using this storage domain.  When I ssh into the host there is 2.2M on the top level of that mount according to du.  How do I account for and reclaim the mysterious space usage?   --  urthmover