Btrfs

Btrfs (B-tree file system, variously pronounced: "Butter F S", "Butterface",[7] "Better F S",[5] "B-tree F S""

https://wiki.archlinux.org/index.php/Btrfs

DUP

• http://permalink.gmane.org/gmane.comp.file-systems.btrfs/36295

COMMANDS

btrfs scrub start /dev/dev
btrfs scrub show /dev/dev