NAME

       cache_dump - dump cache metadata from device or file to standard output.

SYNOPSIS

       cache_dump [options] {device|file}

DESCRIPTION

       cache_dump  dumps  binary  cache  metadata  created by the device-mapper cache target on a
       device or file to standard output for  analysis  or  postprocessing  in  XML  format.  XML
       formatted  metadata  can be fed into cache_restore 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.

OPTIONS

       -h, --help
              Print help and exit.

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

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

       -o {xml file}
              Specify an output file for the xml, rather than printing to stdout.

EXAMPLES

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

           $ cache_dump /dev/vg/metadata

       Dumps  the  cache  metadata  on  logical  volume  /dev/vg/metadata  whilst repairing it to
       standard output in XML format:

           $ cache_dump --repair /dev/vg/metadata

DIAGNOSTICS

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

SEE ALSO

       cache_check(8), cache_repair(8), cache_restore(8)

AUTHOR

       Joe Thornber <ejt@redhat.com>, Heinz Mauelshagen <HeinzM@RedHat.com>