man > cache_dump(8)

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



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  meta‐
       data 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 AT redhat.com>, Heinz Mauelshagen <HeinzM AT RedHat.com>



System Manager's Manual                  Device Mapper Tools                           cache_dump(8)