era\_check(8) System Manager's Manual era\_check(8)

# [NAME](#NAME)

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

# [SYNOPSIS](#SYNOPSIS)

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

# [DESCRIPTION](#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](#OPTIONS)

[**-h, --help**](#h)

Print help and exit.

[**-V, --version**](#V)

Print version information and exit.

[**-q, --quiet**](#q)

Suppress output messages, return only exit code.

[**--super-block-only**](#super_block_only)

Only check the superblock is present.

# [EXAMPLE](#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](#DIAGNOSTICS)

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

# [SEE ALSO](#SEE_ALSO)

[**era\_dump**(8)](/man/enterprise-packages/thin-provisioning-tools/era_dump.8), [**era\_restore**(8)](/man/enterprise-packages/thin-provisioning-tools/era_restore.8), [**era\_invalidate**(8)](/man/enterprise-packages/thin-provisioning-tools/era_invalidate.8)

# [AUTHOR](#AUTHOR)

Joe Thornber <ejt@redhat.com>

Device Mapper Tools System Manager's Manual

---

Document: era_check(8) from thin-provisioning-tools 1.3.4-r3 (Chainguard OS)