SIMPLE SOLUTIONS

CACHE_DUMP(8) - Linux man page online | Administration and privileged commands

Dump cache metadata from device or file to standard output.

Chapter
Device Mapper Tools
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 for‐ matted 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 for‐ mat: $ cache_dump /dev/vg/metadata Dumps the cache metadata on logical volume /dev/vg/metadata whilst repairing it to stan‐ dard 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 <@redhat.com>, Heinz Mauelshagen <@RedHat.com>
System Manager's Manual Device Mapper Tools cache_dump(8)
This manual Reference Other manuals
cache_dump(8) referred by cache_check(8) | cache_metadata_size(8) | cache_repair(8) | cache_restore(8) | cache_writeback(8) | lvconvert(8)
refer to cache_check(8) | cache_repair(8) | cache_restore(8)
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