NAME

       thin_delta - Print the differences in the mappings between two thin devices.

SYNOPSIS

       thin_delta [options] {device|file}

DESCRIPTION

       thin_delta  allows you to compare the mappings in two thin volumes (snapshots allow common
       blocks between thin volumes).

       This tool cannot be run on live metadata unless the --metadata-snap option is used.

OPTIONS

       --thin1, --snap1
              The numeric identifier for the first thin volume to diff.

       --thin1, --snap1
              The numeric identifier for the second thin volume to diff.

       -m, --metadata-snap [block#]

              If you want to get information out of a live pool then you  will  need  to  take  a
              metadata  snapshot  and  use  this  switch.   In  order  for  the information to be
              meaningful you need to ensure the thin volumes you're examining  are  not  changing
              (eg, do not activate those thins).

       --verbose
              Provide extra information on the mappings.

       -h, --help
              Print help and exit.

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

SEE ALSO

       thin_dump(8)       thin_repair(8)      thin_restore(8)      thin_rmap(8)      thin_trim(8)
       thin_metadata_size(8)

AUTHOR

       Joe Thornber <ejt@redhat.com>