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<body class="manpage">
<div id="header">
<h1>
nvme-dim(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>nvme-dim -
   Send Discovery Information Management command to one or more Discovery Controllers.
</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 dim</em> [--task=<task> | -t <task>] [--nqn=<nqn> | -n <nqn>]
                        [--device=<device> | -d <device>]
                        [--output-format=<fmt> | -o <fmt>] [--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>Send Discovery Information Management (DIM) command to one or more Discovery
Controllers. The DIM command allows performing two types of tasks: register or
deregister.</p></div>
<div class="paragraph"><p>The DIM command is used to explicitly register with Discovery Controllers (DC),
especially with Central Discovery Controllers (CDC). CDCs maintain a database (DB)
of all the Hosts and Storage Subsystems in a network. The register task is used
to add a host to the CDC’s DB. The deregister task is used to remove a host from
the CDC’s DB.</p></div>
<div class="paragraph"><p>During a register operation the host will send mandatory information such as the
Host’s NQN and ID, as well as the Host’s hostname and the Operating System’s
version that it is running on. There is also an optional Host Symbolic Name
that can be registered with the CDC.</p></div>
<div class="paragraph"><p>This command can only be applied to existing DC connections previously created
with the nvme-discover(1) command using the --persistent option.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_options">OPTIONS</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<dt class="hdlist1">
-t <task>
</dt>
<dt class="hdlist1">
--task <task>
</dt>
<dd>
<p>
        The task to perform: "register" or "deregister".
</p>
</dd>
<dt class="hdlist1">
-n <subnqn>
</dt>
<dt class="hdlist1">
--nqn <nqn>
</dt>
<dd>
<p>
        The DIM command will be sent to the Discovery Controller (DC) matching this
        NQN. A list of comma-separated NQNs can be supplied to apply the command to
        more than one DC.
</p>
</dd>
<dt class="hdlist1">
-d <device>
</dt>
<dt class="hdlist1">
--device <device>
</dt>
<dd>
<p>
        The DIM command will be sent to the Discovery Controllers (DC) associated
        with this NVMe device handle. A list of comma-separated device handles can
        be supplied to apply the command to more than one DC.
</p>
</dd>
<dt class="hdlist1">
-o <fmt>
</dt>
<dt class="hdlist1">
--output-format=<fmt>
</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>
Register with the Central Discovery Controller (CDC) named
nqn.1988-11.com.dell:SFSS:1:20220118125153e8:
</p>
<div class="listingblock">
<div class="content">
<pre><code># nvme dim --task=register --nqn=nqn.1988-11.com.dell:SFSS:1:20220118125153e8</code></pre>
</div></div>
</li>
<li>
<p>
Deregister from Central Discovery Controller (CDC) associated with nvme4
</p>
<div class="listingblock">
<div class="content">
<pre><code># nvme dim --task=deregister --device=nvme4</code></pre>
</div></div>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph"><p>nvme-discover(1)</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
 2025-02-13 00:00:00 UTC
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