Provided by: btrfs-tools_0.19+20100601-3ubuntu2_i386
btrfsck - check a btrfs filesystem
btrfsck is used to check a btrfs filesystem. device is the device file
where the filesystem is stored.
btrfsck is part of btrfs-progs. Btrfs is currently under heavy
development, and not suitable for any uses other than benchmarking and
review. Please refer to the btrfs wiki http://btrfs.wiki.kernel.org
for further details.