cache_repair(8) System Manager's Manual cache_repair(8)

cache_repair - repair cache binary metadata from device/file to device/file.

cache_repair [options] -i {device|file} -o {device|file}

cache_repair reads binary cache metadata created by the respective device-mapper target from one device or file, repairs it and writes it to another device or file. If written to a metadata device, the metadata can be processed by the device-mapper target.

This tool cannot be run on live metadata.

Print help and exit.
Print version information and exit.
Input file or device containing binary metadata.
Output file or device for repaired binary metadata.
    If a file is then it must be preallocated, and large enough to hold the

Reads the binary cache metadata from file metadata, repairs it and writes it to logical volume /dev/vg/metadata for further processing by the respective device-mapper target:

    $ cache_repair -i metadata -o /dev/vg/metadata

cache_repair returns an exit code of 0 for success or 1 for error.

cache_dump(8), cache_check(8), cache_restore(8)

Joe Thornber <>, Heinz Mauelshagen <>

Device Mapper Tools System Manager's Manual