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

# [NAME](#NAME)

**era\_dump** - dump era metadata from device or file to standard output.

# [SYNOPSIS](#SYNOPSIS)

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

# [DESCRIPTION](#DESCRIPTION)

**era\_dump** dumps binary era metadata created by the device-mapper era target on a device or file to standard output for analysis or postprocessing in XML format. XML formatted metadata can be fed into era\_restore (see [**era\_restore**(8)](/man/enterprise-packages/thin-provisioning-tools/era_restore.8)) in order to put it back onto a metadata device (to process by the device-mapper target) 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.

[**--repair**](#repair)

Repair the metadata whilst dumping it.

[**--logical**](#logical)

Fold any unprocessed write sets into the final era array.

```


    You probably want to do this if you're intending to process the results as


    it simplifies the XML.
```

[**-o {xml file}**](#o)

Specify a file for the output rather than writing to stdout.

# [EXAMPLES](#EXAMPLES)

Dumps era metadata on logical volume /dev/vg/metadata to standard output in XML format:

```


    $ era_dump /dev/vg/metadata
```

# [DIAGNOSTICS](#DIAGNOSTICS)

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

# [SEE ALSO](#SEE_ALSO)

[**era\_check**(8)](/man/enterprise-packages/thin-provisioning-tools/era_check.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

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Document: era_dump(8) from thin-provisioning-tools 1.3.4-r5 (Chainguard OS)