btrfs-check (8)

btrfs check [options] <device>

btrfs check is used to check or repair a btrfs filesystem offline.

Note

Since btrfs is under heavy development especially the btrfs check command, it is highly recommended to read the following btrfs wiki before executing btrfs check with --repair option: \m[blue]https://btrfs.wiki.kernel.org/index.php/Btrfsck\m[]

btrfsck is an alias of btrfs check command and is now deprecated.

-s|--super <superblock>

use '<superblock>'th superblock copy.

--repair

try to repair the filesystem.

--init-csum-tree

create a new CRC tree.

--init-extent-tree

create a new extent tree.

--check-data-csum

verify checkums of data blocks.

btrfs check returns a zero exit status if it succeeds. Non zero is returned in case of failure.

btrfs is part of btrfs-progs. Please refer to the btrfs wiki \m[blue]http://btrfs.wiki.kernel.org\m[] for further details.

mkfs.btrfs(8), btrfs-scrub(8), btrfs-rescue(8)