era_check(8)

era_check8

Validate era metadata on device or file.

Usage

era_check [options] {device | file}

Overview

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.

Examples

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.

Releases

6 releases since Debian 9 (Stretch); the text changed 3 times.

  1. 9
  2. 10
  3. 11–12
  4. 13–Arch

Author

Joe Thornber <[email protected]>

From thin-provisioning-tools 1.3.4-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.