centos man page for btrfsck

BTRFSCK(8)						      System Manager's Manual							BTRFSCK(8)

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)