thin_rmap (8) - Linux Manuals

thin_rmap: output reverse map of a thin provisioned region of blocks from

NAME

thin_rmap - output reverse map of a thin provisioned region of blocks from metadata device or file.

SYNOPSIS

thin_rmap [options] {device|file}

DESCRIPTION

thin_rmap outputs the reverse mapping stored in the metadata on a device or file between a region of thin provisioned pool blocks and the associated thin provisioned devices.

This tool cannot be run on live metadata.

OPTIONS

-h, --help

Print help and exit.

-V, --version

Print version information and exit.

--region {block range}

Specify range of blocks on the data device.

    At least one region must be specified.  Multiple regions may be specified.

    The range takes the format <begin>..<one past the end>.  For example,
    "5..45" specifies data blocks 5 to 44 inclusive, but not 45.

EXAMPLES

$ thin_rmap --region 5..45 /dev/pool-metadata

DIAGNOSTICS

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

AUTHOR

Joe Thornber <ejt [at] redhat.com>, Heinz Mauelshagen <HeinzM [at] RedHat.com>