man 8 cache_repair

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

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

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

DESCRIPTION
       cache_repair reads binary cache metadata created by the respective  de-
       vice-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.

OPTIONS
       -h, --help
              Print help and exit.

       -V, --version
              Print version information and exit.

       -i, --input {device|file}
              Input file or device containing binary metadata.

       -o, --output {device|file}
              Output file or device for repaired binary metadata.

           If a file is then it must be preallocated, and large enough to hold the
           metadata.

EXAMPLE
       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

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

SEE ALSO
       cache_dump(8), cache_check(8), cache_restore(8)

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

System Manager's Manual       Device Mapper Tools              cache_repair(8)