thin_rmap
Section: Maintenance Commands (8)
Updated: Device Mapper Tools
Page Index
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.
SEE ALSO
thin_check(8),
thin_dump(8),
thin_repair(8),
thin_restore(8),
thin_metadata_size(8)
AUTHOR
Joe Thornber <
ejt@redhat.com>, Heinz Mauelshagen <
HeinzM@RedHat.com>