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)

                                                                                       BTRFSCK(8)