btrfs-select-super (8)

Leading comments

    Title: btrfs-select-super
   Author: [FIXME: author] [see http://docbook.sf.net/el/author]
Generator: DocBook XSL Stylesheets v1.79.0 <http://docbook.sf.net/>
     Date: 07/28/2017
   Manual: Btrfs Manual
   Source: Btrfs v4.12
 Language: English

NAME

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)