Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/system-oneiric
                      39059456   4870364  30775380  14% /
udev                   1537124         4   1537120   1% /dev
tmpfs                   618144      1128    617016   1% /run
none                      5120         0      5120   0% /run/lock
none                   1545356       188   1545168   1% /run/shm
/dev/sdb1               233191     24047    196703  11% /boot
/dev/mapper/system-home
                      19223252    267612  17979156   2% /home
/dev/mapper/data-backup
                     480717520    202664 456095736   1% /media/backup