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thin_dump(8)                System Manager's Manual               thin_dump(8)

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  al-
       ternate 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.

       This tool cannot be run on live metadata unless the --metadata-snap op-
       tion is used.

OPTIONS
       -h, --help
              Print help and exit.

       -V, --version
              Print version information and exit.

       -f, --format {xml|human_readable|custom}
              Choose output format.

           Custom formats are supported via shared library plugins.  They should be
           specified as in this example:

             $ thin_dump --format custom=mylib.so /dev/sda

       -r, --repair
              Repair the metadata whilst dumping it.

       -m, --metadata-snap{=<block nr>}
              Dump metadata snapshot.

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

       --dev-id {natural}
              Dump the specified device.

           This option may be specified multiple times to select more than one thin
           device.

       --skip-mappings
              Do not dump the mappings.

       -o {xml file}
              Specify a file for the output rather than writing to stdout.

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

           $ thin_dump -f human_readable /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  pro-
       cessable 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 <ejt@redhat.com>, Heinz Mauelshagen <HeinzM@RedHat.com>

System Manager's Manual       Device Mapper Tools                 thin_dump(8)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | DIAGNOSTICS | SEE ALSO | AUTHOR