Provided by: btrfs-tools_4.4-1_i386 bug

NAME

       btrfs-select-super - overwrite superblock with a backup

SYNOPSIS

       btrfs-select-super -s number dev

DESCRIPTION

       btrfs-select-super destructively overwrites all copies of the
       superblock with a specified copy. This helps with certain cases of
       damage, especially when barriers were disabled during a power failure.
       You can find a valid copy of the superblock with btrfs check -s.

       The filesystem specified by dev must not be mounted.

OPTIONS

       -s|--super <superblock>
           use <superblock>th superblock copy, valid values are 0 up to 2 if
           the respective superblock offset is within the filesystem

SEE ALSO

       btrfsck check(8)