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CACHE_DUMP

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 formated metadata can be fed into cache_restore (see cache_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.
−r, −−repair

Repair the metadata whilst dumping it.
−h, −−help

Print help and exit.
−V, −−version

Output version information and exit.

EXAMPLES

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

cache_dump /dev/vg/metadata

EXAMPLES

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 DOT com>
Heinz Mauelshagen <HeinzM AT RedHat DOT com>

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