2014-04-02 08:29:33 +00:00
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btrfs-show-super(8)
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====================
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NAME
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----
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btrfs-show-super - show btrfs superblock information stored in devices
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SYNOPSIS
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--------
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2014-05-19 15:49:35 +00:00
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*btrfs-show-super* [options] <dev> [<dev>...]
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2014-04-02 08:29:33 +00:00
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DESCRIPTION
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-----------
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2014-05-19 15:49:35 +00:00
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*btrfs-show-super* is used to print the information of superblock,
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2014-04-02 08:29:33 +00:00
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you can specify which mirror to print out.
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By default, every device's first superblock will be printed out.
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Mainly used for debug purpose.
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OPTIONS
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-------
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2014-05-08 03:03:58 +00:00
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-f::
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Print full superblock information.
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+
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Including the system chunk array and backup roots.
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2014-04-02 08:29:33 +00:00
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-a::
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2014-05-08 03:03:58 +00:00
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Print information of all superblocks.
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2014-04-02 08:29:33 +00:00
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+
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If this option is given, '-i' option will be ignored.
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-i <super_mirror>::
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Specify which mirror to print out.
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+
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<super_mirror> is between 0 and 2.
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If several '-i <super_mirror>' are given, only the last one is valid.
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2014-05-14 02:03:04 +00:00
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-F::
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Attempt to print the superblock even if no superblock magic is found. May end
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badly.
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2014-04-02 08:29:33 +00:00
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EXIT STATUS
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-----------
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2014-05-19 15:49:35 +00:00
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*btrfs-show-super* will return 0 if no error happened.
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2014-04-02 08:29:33 +00:00
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If any problems happened, 1 will be returned.
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SEE ALSO
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--------
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`mkfs.btrfs`(8)
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