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| author | Adam Borowski <kilobyte@angband.pl> | 2015-09-02 05:00:46 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2015-09-02 18:56:54 +0200 |
| commit | 13be89d82ee9a233a30e7ed1ef09dff242dfcaa6 (patch) | |
| tree | d133189f5394ceceaf9631e7052c43e46a80b776 /Documentation/btrfs-select-super.asciidoc | |
| parent | 11b81f475f2c5fa0368ea1297daed1537e4f9816 (diff) | |
btrfs-progs: doc: document btrfs-select-super(8)
Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'Documentation/btrfs-select-super.asciidoc')
| -rw-r--r-- | Documentation/btrfs-select-super.asciidoc | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/btrfs-select-super.asciidoc b/Documentation/btrfs-select-super.asciidoc new file mode 100644 index 00000000..a8d7ef00 --- /dev/null +++ b/Documentation/btrfs-select-super.asciidoc @@ -0,0 +1,29 @@ +btrfs-select-super(8) +===================== + +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) |