diff options
| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-11-02 16:34:19 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2015-11-02 15:45:52 +0100 |
| commit | c328e0db4a6759941d6c44e08aa78e5b1cd16bef (patch) | |
| tree | 07193928228adfba7cfdbe01027d21e42aff31b3 /Documentation/btrfs-show-super.asciidoc | |
| parent | b1c222321e096f1dd1284699d9366b10cbfcb636 (diff) | |
btrfs-progs: show-super: Add option to print superblock at given bytenr
Add '-s <sb_bytenr>' option to show superblock at given bytenr.
This is very useful to debug non-standard btrfs, like debuging the
1st stage btrfs of btrfs-convert.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
[ minor updates in docs ]
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'Documentation/btrfs-show-super.asciidoc')
| -rw-r--r-- | Documentation/btrfs-show-super.asciidoc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/btrfs-show-super.asciidoc b/Documentation/btrfs-show-super.asciidoc index 1646be3b..8866c940 100644 --- a/Documentation/btrfs-show-super.asciidoc +++ b/Documentation/btrfs-show-super.asciidoc @@ -40,6 +40,10 @@ If several '-i <super_mirror>' are given, only the last one is valid. Attempt to print the superblock even if no superblock magic is found. May end badly. +-s <bytenr>:: +specifiy offset to a superblock in a non-standard location at 'bytenr', useful +for debugging (disables the '-f' option) + EXIT STATUS ----------- *btrfs-show-super* will return 0 if no error happened. |