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 [AT] redhat.com>, Heinz Mauelshagen <HeinzM [AT] RedHat.com>