cache_dump

Section: Maintenance Commands (8)
Updated: Device Mapper Tools
Page Index
 

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@redhat.com>, Heinz Mauelshagen <HeinzM@RedHat.com>


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLES
DIAGNOSTICS
SEE ALSO
AUTHOR
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