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<body class="manpage">
<div id="header">
<h1>
nvme-verify(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>nvme-verify -
   Send an NVMe Verify command, return results
</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-verify</em> &lt;device&gt; [--namespace-id=&lt;nsid&gt; | -n &lt;nsid&gt;]
                        [--start-block=&lt;slba&gt; | -s &lt;slba&gt;]
                        [--block-count=&lt;nlb&gt; | -c &lt;nlb&gt;] [--limited-retry | -l]
                        [--force-unit-access | -f]
                        [--prinfo=&lt;prinfo&gt; | -p &lt;prinfo&gt;]
                        [--ref-tag=&lt;reftag&gt; | -r &lt;reftag&gt;]
                        [--app-tag-mask=&lt;appmask&gt; | -m &lt;appmask&gt;]
                        [--app-tag=&lt;apptag&gt; | -a &lt;apptag&gt;]
                        [--storage-tag&lt;storage-tag&gt; | -S &lt;storage-tag&gt;]
                        [--storage-tag-check | -C]
                        [--output-format=&lt;fmt&gt; | -o &lt;fmt&gt;] [--verbose | -v]
                        [--timeout=&lt;timeout&gt; | -t &lt;timeout&gt;]</pre>
<div class="attribution">
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>The Verify command verifies the integrity of the stored information by
reading data and metadata.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_options">OPTIONS</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<dt class="hdlist1">
-n &lt;nsid&gt;
</dt>
<dt class="hdlist1">
--namespace-id=&lt;nsid&gt;
</dt>
<dd>
<p>
        Namespace ID use in the command.
</p>
</dd>
<dt class="hdlist1">
-s &lt;slba&gt;
</dt>
<dt class="hdlist1">
--start-block=&lt;slba&gt;
</dt>
<dd>
<p>
        Start block address.
</p>
</dd>
<dt class="hdlist1">
-c &lt;nlb&gt;
</dt>
<dt class="hdlist1">
--block-count=&lt;nlb&gt;
</dt>
<dd>
<p>
        Number of logical blocks to Verify.
</p>
</dd>
<dt class="hdlist1">
-l
</dt>
<dt class="hdlist1">
--limited-retry
</dt>
<dd>
<p>
        Sets the limited retry flag.
</p>
</dd>
<dt class="hdlist1">
-f
</dt>
<dt class="hdlist1">
--force-unit-access
</dt>
<dd>
<p>
        Set the force-unit access flag.
</p>
</dd>
<dt class="hdlist1">
-p &lt;prinfo&gt;
</dt>
<dt class="hdlist1">
--prinfo=&lt;prinfo&gt;
</dt>
<dd>
<p>
        Protection Information field definition.
</p>
<div class="tableblock">
<table rules="all"
width="100%"
frame="border"
cellspacing="0" cellpadding="4">
<col width="50%" />
<col width="50%" />
<tbody>
<tr>
<td align="left" valign="top"><p class="table">Bit</p></td>
<td align="left" valign="top"><p class="table">Description</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">3</p></td>
<td align="left" valign="top"><p class="table">PRACT: Protection Information Action. When set to 1, PI is stripped/inserted
on read/write when the block format&#8217;s metadata size is 8. When set to 0,
metadata is passes.</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">2:0</p></td>
<td align="left" valign="top"><p class="table">PRCHK: Protection Information Check:</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">2</p></td>
<td align="left" valign="top"><p class="table">Set to 1 enables checking the guard tag</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">1</p></td>
<td align="left" valign="top"><p class="table">Set to 1 enables checking the application tag</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0</p></td>
<td align="left" valign="top"><p class="table">Set to 1 enables checking the reference tag</p></td>
</tr>
</tbody>
</table>
</div>
</dd>
<dt class="hdlist1">
-r &lt;reftag&gt;
</dt>
<dt class="hdlist1">
--ref-tag=&lt;reftag&gt;
</dt>
<dd>
<p>
        Optional reftag when used with protection information.
</p>
</dd>
<dt class="hdlist1">
-m &lt;appmask&gt;
</dt>
<dt class="hdlist1">
--app-tag-mask=&lt;appmask&gt;
</dt>
<dd>
<p>
        Optional application tag mask when used with protection information.
</p>
</dd>
<dt class="hdlist1">
-a &lt;apptag&gt;
</dt>
<dt class="hdlist1">
--app-tag=&lt;apptag&gt;
</dt>
<dd>
<p>
        Optional application tag when used with protection information.
</p>
</dd>
<dt class="hdlist1">
-S &lt;storage-tag&gt;
</dt>
<dt class="hdlist1">
--storage-tag=&lt;storage-tag&gt;
</dt>
<dd>
<p>
        Variable Sized Expected Logical Block Storage Tag(ELBST).
</p>
</dd>
<dt class="hdlist1">
-C
</dt>
<dt class="hdlist1">
--storage-tag-check
</dt>
<dd>
<p>
        This flag enables Storage Tag field checking as part of Verify operation.
</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>
<dt class="hdlist1">
-t &lt;timeout&gt;
</dt>
<dt class="hdlist1">
--timeout=&lt;timeout&gt;
</dt>
<dd>
<p>
        Override default timeout value. In milliseconds.
</p>
</dd>
</dl></div>
</div>
</div>
<div class="sect1">
<h2 id="_examples">EXAMPLES</h2>
<div class="sectionbody">
<div class="paragraph"><p>No examples yet.</p></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
 2025-11-19 00:00:00 UTC
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