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

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

cache_dump [options] {device|file}

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.

-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.

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

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

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

Joe Thornber <ejt@redhat.com>, Heinz Mauelshagen <HeinzM@RedHat.com>
Device Mapper Tools System Manager's Manual