Provided by: btrfs-tools_4.4-1_amd64 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)