NAME

       btrfs-show-super - show btrfs superblock information stored in devices

SYNOPSIS

       btrfs-show-super [options] <dev> [<dev>...]

DESCRIPTION

       btrfs-show-super  is  used  to  print the information of superblock, you can specify which
       mirror to print out. In default, every device's first superblock will be printed out.

       Options

       -a   print all the superblock information, if this option is given, '-i'  option  will  be
            ignored.

       -i <super_mirror>
            specify  which mirror to print out. <super_mirror> is between 0 and 2. if several '-i
            <super_mirror>' are given, only the last one is valid.

EXIT CODE

       btrfs-show-super will return 0 exit code if no error happened.  If any problems  happened,
       1 will be returned.

AUTHOR

       Written by Shilong Wang and Wenruo Qu.

COPYRIGHT

       Copyright    ©    2013    Fujitsu,    Inc.     License    GPLv2:   GNU   GPL   version   2
       <http://gnu.org/licenses/gpl.html>.
       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-SHOW-SUPER(8)