Signed-off-by: Alexander Fougner <fougner89@xxxxxxxxx>
---
Documentation/btrfs-inspect-internal.asciidoc | 38 +++++++++++++++++++++++++++
btrfs-completion | 2 +-
2 files changed, 39 insertions(+), 1 deletion(-)
diff --git a/Documentation/btrfs-inspect-internal.asciidoc b/Documentation/btrfs-inspect-internal.asciidoc
index 25e6b8b..a151471 100644
--- a/Documentation/btrfs-inspect-internal.asciidoc
+++ b/Documentation/btrfs-inspect-internal.asciidoc
@@ -92,6 +92,44 @@ Print info of the specified block only.
-t <tree_id>::::
Print only the tree with the specified ID.
+*show-super* [options] <device> [device...]::
+(needs root privileges)
++
+Show btrfs superblock information stored in devices.
+It is used to print the information of superblock,
+you can specify which mirror to print out.
++
+By default, every device's first superblock will be printed out.
++
+Mainly used for debug purpose.
++
+`Options`
++
+
+-f::::
+Print full superblock information.
++
+Including the system chunk array and backup roots.
+
+-a::::
+Print information of all superblocks.
++
+If this option is given, '-i' option will be ignored.
+
+-i <super_mirror>::::
+Specify which mirror to print out.
++
+<super_mirror> is between 0 and 2.
+If several '-i <super_mirror>' are given, only the last one is valid.
+
+-F::::
+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
-----------
diff --git a/btrfs-completion b/btrfs-completion
index 7631911..db0dd97 100644
--- a/btrfs-completion
+++ b/btrfs-completion
@@ -36,7 +36,7 @@ _btrfs()
commands_device='scan add delete remove ready stats usage'
commands_scrub='start cancel resume status'
commands_rescue='chunk-recover super-recover'
- commands_inspect_internal='inode-resolve logical-resolve subvolid-resolve rootid min-dev-size dump-tree'
+ commands_inspect_internal='inode-resolve logical-resolve subvolid-resolve rootid min-dev-size dump-tree dump-super'
commands_property='get set list'
commands_quota='enable disable rescan'
commands_qgroup='assign remove create destroy show limit'
--
2.7.1
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