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THIN_DUMP


Section: Maintenance Commands (8)
Updated: Thin Provisioning Tools
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NAME

thin_dump – dump thin provisioning metadata from device or file to standard output


 

SYNOPSIS

thin_dump

[options]

{device|file}


 

DESCRIPTION

thin_dump

dumps binary thin provisioning metadata (optionally from alternate block;
see option –metadata-snap) created by the device-mapper
thin provisioning target on a
device

or
file

to standard output for
analysis or postprocessing in either XML or human readable format.
XML formated metadata can be fed into thin_restore (see
thin_restore(8))

in order to put it back onto a metadata
device

(to process by the device-mapper target) or
file.



-f, –format {xml|human_readable}.

Print output in XML or human readable format.


-r, –repair.

Repair the metadata whilst dumping it.


-m, –metadata_snap [block#].

Dump metadata snapshot created by device-mapper thin provisioning target.
If block is not provided, access the default metadata snapshot created by
the thin provisioning device-mapper target, else try the one at block#.
See the thin provisioning target documentation on how to create or release
a metadata snapshot and retrieve the block number from the kernel.


-h, –help.

Print help and exit.


-V, –version.

Output version information and exit.



 

EXAMPLES

Dumps the thin provisioning metadata on logical volume /dev/vg/metadata
to standard output in human readable format:


thin_dump -f human_redable /dev/vg/metadata


Dumps the thin provisioning metadata on logical volume /dev/vg/metadata
to standard output in XML format:


thin_dump /dev/vg/metadata


Dumps the thin provisioning metadata snapshot on logical volume /dev/vg/metadata
to standard output in human readable format (not processable by
thin_restore(8)

):


thin_dump –format human_readable –metadata-snap /dev/vg/metadata


 

DIAGNOSTICS

thin_dump

returns an exit code of 0 for success or 1 for error.


 

SEE ALSO

thin_check(8)

thin_repair(8)

thin_restore(8)

thin_rmap(8)

thin_metadata_size(8)

 

AUTHOR

Joe Thornber <[email protected]>

Heinz Mauelshagen <[email protected]>



 

Index



NAME

SYNOPSIS

DESCRIPTION

EXAMPLES

DIAGNOSTICS

SEE ALSO

AUTHOR



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