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View File Name : nvme-list-subsys.html

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<body class="manpage">
<div id="header">
<h1>
nvme-list-subsys(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>nvme-list-subsys -
   List all NVMe subsystems
</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 list-subsys</em> <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>Scan the sysfs tree for NVM Express subsystems and return the controllers
for those subsystems as well as some pertinent information about them.
If a device is given, print out only the values for the controllers
and subsystems leading to the device.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_options">OPTIONS</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<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="verseblock">
<pre class="content"><a href="mailto:root@host">root@host</a># nvme list-subsys
nvme-subsys0 - NQN=nvmf-test
\
 +- nvme0 rdma traddr=1.1.1.3,trsvcid=4420,host_traddr=1.1.1.1
 +- nvme1 rdma traddr=1.1.1.3,trsvcid=4420,host_traddr=1.1.1.2
nvme-subsys1 - NQN=nvmf-test2
\
 +- nvme2 rdma traddr=1.1.1.3,trsvcid=4420,host_traddr=1.1.1.2
 +- nvme3 rdma traddr=1.1.1.3,trsvcid=4420,host_traddr=1.1.1.1</pre>
<div class="attribution">
</div></div>
<div class="verseblock">
<pre class="content"><a href="mailto:root@host">root@host</a># nvme list-subsys -o json
{
  "Subsystems" : [
    {
      "Name" : "nvme-subsys0",
      "NQN" : "nvmf-test"
    },
    {
      "Paths" : [
        {
          "Name" : "nvme0",
          "Transport" : "rdma",
          "Address" : "traddr=1.1.1.3,trsvcid=4420,host_traddr=1.1.1.1"
        },
        {
          "Name" : "nvme1",
          "Transport" : "rdma",
          "Address" : "traddr=1.1.1.3,trsvcid=4420,host_traddr=1.1.1.2"
        }
      ]
    },
    {
      "Name" : "nvme-subsys1",
      "NQN" : "nvmf-test2"
    },
    {
      "Paths" : [
        {
          "Name" : "nvme2",
          "Transport" : "rdma",
          "Address" : "traddr=1.1.1.3,trsvcid=4420,host_traddr=1.1.1.2"
        },
        {
          "Name" : "nvme3",
          "Transport" : "rdma",
          "Address" : "traddr=1.1.1.3,trsvcid=4420,host_traddr=1.1.1.1"
        }
      ]
    }
  ]
}</pre>
<div class="attribution">
</div></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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