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<body class="manpage">
<div id="header">
<h1>
nvme-telemetry-log(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>nvme-telemetry-log -
   Retrieves a Telemetry Host-Initiated log page from an NVMe device
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="verseblock">
<pre class="content"><em>nvme telemetry-log</em> &lt;device&gt; [--output-file=&lt;file&gt; | -O &lt;file&gt;]
                        [--host-generate=&lt;gen&gt; | -g &lt;gen&gt;]
                        [--output-format=&lt;fmt&gt; | -o &lt;fmt&gt;] [--verbose | -v]</pre>
<div class="attribution">
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>Retrieves an Telemetry Host-Initiated log page from an NVMe device and provides
the returned structure.</p></div>
<div class="paragraph"><p>The &lt;device&gt; parameter is mandatory and may be either the NVMe character
device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).</p></div>
<div class="paragraph"><p>On success, the returned log structure will be in raw binary format <em>only</em> with
--output-file option which is mandatory.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_options">OPTIONS</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<dt class="hdlist1">
-O &lt;file&gt;
</dt>
<dt class="hdlist1">
--output-file=&lt;file&gt;
</dt>
<dd>
<p>
        File name to which raw binary data will be saved to.
</p>
</dd>
<dt class="hdlist1">
-g &lt;gen&gt;
</dt>
<dt class="hdlist1">
--host-generate=&lt;gen&gt;
</dt>
<dd>
<p>
        If set to 1, controller shall capture the Telemetry Host-Initiated data
        representing the internal state of the controller at the time the
        associated Get Log Page command is processed.
        If cleated to 0, controller shall <em>not</em> update this data.
</p>
</dd>
<dt class="hdlist1">
-d &lt;da&gt;
</dt>
<dt class="hdlist1">
--data-area=&lt;da&gt;
</dt>
<dd>
<p>
        Retrieves the specific data area requested. Valid inputs are 1,2,3,4. If
        this option is not specified, the default value is 3, since data area
        4 may not be supported.
</p>
</dd>
<dt class="hdlist1">
-o &lt;fmt&gt;
</dt>
<dt class="hdlist1">
--output-format=&lt;fmt&gt;
</dt>
<dd>
<p>
        Set the reporting format to <em>normal</em>, <em>json</em> or <em>binary</em>. Only one
        output format can be used at a time.
</p>
</dd>
<dt class="hdlist1">
-v
</dt>
<dt class="hdlist1">
--verbose
</dt>
<dd>
<p>
        Increase the information detail in the output.
</p>
</dd>
</dl></div>
</div>
</div>
<div class="sect1">
<h2 id="_examples">EXAMPLES</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
Retrieve Telemetry Host-Initiated data to telemetry_log.bin
</p>
<div class="listingblock">
<div class="content">
<pre><code># nvme telemetry-log /dev/nvme0 --output-file=telemetry_log.bin</code></pre>
</div></div>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_nvme">NVME</h2>
<div class="sectionbody">
<div class="paragraph"><p>Part of the nvme-user suite</p></div>
</div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Last updated
 2025-02-13 00:00:00 UTC
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