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.
AUTHOR¶
Joe Thornber <ejt@redhat.com>, Heinz Mauelshagen <HeinzM@RedHat.com>
