---
name: "thin_rmap"
section: "8"
platform: "linux"
package: "thin-provisioning-tools"
version: "1.3.4-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/thin_rmap"
---

# thin\_rmap(8)

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

## 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_check/8.md), [thin\_dump(8)](/thin_dump/8.md), [thin\_repair(8)](/thin_repair/8.md), [thin\_restore(8)](/thin_restore/8.md), [thin\_metadata\_size(8)](/thin_metadata_size/8.md)**

## AUTHOR

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