# phpman > man > era_check(8)

[era_check(8)](https://www.chedong.com/phpMan.php/man/eracheck/8/markdown)                           System Manager's Manual                          [era_check(8)](https://www.chedong.com/phpMan.php/man/eracheck/8/markdown)



## 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)](https://www.chedong.com/phpMan.php/man/dump/8/markdown), **era**___**[restore**(8)](https://www.chedong.com/phpMan.php/man/restore/8/markdown), **era**___**[invalidate**(8)](https://www.chedong.com/phpMan.php/man/invalidate/8/markdown)

## AUTHOR
       Joe Thornber <<ejt@redhat.com>>



System Manager's Manual                  Device Mapper Tools                            [era_check(8)](https://www.chedong.com/phpMan.php/man/eracheck/8/markdown)