btrfsck (8)

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NAME

btrfsck - check and repair of a Btrfs filesystem

SYNOPSIS

btrfsck [options] <device>

DESCRIPTION

btrfsck is used to check and optionally repair of a Btrfs filesystem. Now, it can only be run on an unmounted FS. Considering it is not well-tested in real-life situations yet. if you have a broken Btrfs filesystem, btrfsck may not repair but cause aditional damages. <device> is the device file where the filesystem is stored.

Options

-s,--super <superblock>

specify which superblock copy that you want to use.

--repair

try to repair the filesystem.

--init-csum-tree

create a new CRC tree.

--init-extent-tree

create a new extent tree.

EXIT CODE

btrfsck will return 0 exit code if no error happened. Other exit code means some problems happened.

This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

mkfs.btrfs(8), btrfs(8)

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