root@backup-host:/storage# du -sh .
4.8G	.
root@backup-host:/storage# df -h
Filesystem                     Size  Used Avail Use% Mounted on
/dev/mapper/backup--host-root  6.8G  1.3G  5.5G  19% /
udev                           489M  4.0K  489M   1% /dev
tmpfs                          199M  240K  199M   1% /run
none                           5.0M     0  5.0M   0% /run/lock
none                           498M     0  498M   0% /run/shm
/dev/vda1                      228M   50M  167M  23% /boot
demo1.backend:/home             96G   12G   84G  12% /storage