5374ebe042
>From: http://man7.org/linux/man-pages/man7/man-pages.7.html ... AUTHORS lists authors of the documentation or program.Use of an AUTHORS section is strongly discouraged. Generally, it is better not to clutter every page with a list of (over time potentially numerous) authors; if you write or significantly amend a page, add a copyright notice as a comment in the source file. If you are the author of a device driver and want to include an address for reporting bugs, place this under the BUGS section. ... Suggested-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com> Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz>
51 lines
1 KiB
Plaintext
51 lines
1 KiB
Plaintext
btrfs-show-super(8)
|
|
====================
|
|
|
|
NAME
|
|
----
|
|
btrfs-show-super - show btrfs superblock information stored in devices
|
|
|
|
SYNOPSIS
|
|
--------
|
|
*btrfs-show-super* [options] <dev> [<dev>...]
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
*btrfs-show-super* 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.
|
|
|
|
EXIT STATUS
|
|
-----------
|
|
*btrfs-show-super* will return 0 if no error happened.
|
|
If any problems happened, 1 will be returned.
|
|
|
|
SEE ALSO
|
|
--------
|
|
`mkfs.btrfs`(8)
|