---
name: "era_check"
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/era_check"
---

# era\_check(8)

validate era metadata on device or file.

## NAME

**era\_check** - validate era metadata on device or file.

## SYNOPSIS

```
era_check [options] {device|file}
```

## DESCRIPTION

**era\_check checks era metadata created by the device-mapper era target on a** **device or file.**

**This tool cannot be run on live metadata.**

## OPTIONS

- **-h, --help**

  **Print help and exit.**

- **-V, --version**

  **Print version information and exit.**

- **-q, --quiet**

  **Suppress output messages, return only exit code.**

- **--super-block-only**

  **Only check the superblock is present.**

## EXAMPLE

**Analyse thin provisioning metadata on logical volume /dev/vg/metadata:**

```
    $ era_check /dev/vg/metadata
```

**The device may not be actively used by the target when running.**

## DIAGNOSTICS

**era\_check returns an exit code of 0 for success or 1 for error.**

## SEE ALSO

**[era\_dump(8)](/era_dump/8.md), [era\_restore(8)](/era_restore/8.md), [era\_invalidate(8)](/era_invalidate/8.md)**

## AUTHOR

**Joe Thornber \<ejt@redhat.com\>**