file block dir network [0-9]+(\.[0-9]{0,9})? none auto ext2 ext3 ext4 ufs iso9660 udf gfs gfs2 vfat hfs+ xfs ocfs2 unknown raw dir bochs cloop cow dmg iso qcow qcow2 qed vmdk vpc none linux fat16 fat32 linux-swap linux-lvm linux-raid extended