btrfs-progs: show-super: Add option to print superblock at given bytenr

[platform/upstream/btrfs-progs.git] / Documentation / btrfs-show-super.asciidoc

diff --git a/Documentation/btrfs-show-super.asciidoc b/Documentation/btrfs-show-super.asciidoc
index 1646be3..8866c94 100644 (file)
--- 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.
 
 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.
 EXIT STATUS
 -----------
 *btrfs-show-super* will return 0 if no error happened.