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.