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

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

thin_rmap [options] {device|file}

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.

Print help and exit.
Print version information and exit.
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.

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

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

thin_check(8), thin_dump(8), thin_repair(8), thin_restore(8), thin_metadata_size(8)

Joe Thornber <>, Heinz Mauelshagen <>

Device Mapper Tools System Manager's Manual