Filesystem     1K-blocks    Used Available Use% Mounted on
udev             4019644       0   4019644   0% /dev
tmpfs             806508    9896    796612   2% /run
/dev/sdb1        7659536 5871696   1787840  77% /cdrom
/dev/loop0       1104256 1104256         0 100% /rofs
/cow             4032528  533892   3498636  14% /
tmpfs            4032528      80   4032448   1% /dev/shm
tmpfs               5120       4      5116   1% /run/lock
tmpfs            4032528       0   4032528   0% /sys/fs/cgroup
tmpfs            4032528    2952   4029576   1% /tmp
cgmfs                100       0       100   0% /run/cgmanager/fs
tmpfs             806508      84    806424   1% /run/user/999