Manpage/btrfs-check

btrfs-check(8) Manual Page

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NAME

btrfs-check - check or repair a btrfs filesystem offline

SYNOPSIS

btrfs check [options] <device>

DESCRIPTION

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:
https://btrfs.wiki.kernel.org/index.php/Btrfsck

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

OPTIONS

-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.

EXIT STATUS

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

AVAILABILITY

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

SEE ALSO

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