NVME-LIST-SUBSYS(1) NVMe Manual NVME-LIST-SUBSYS(1)

# [NAME](#NAME)

nvme-list-subsys - List all NVMe subsystems

# [SYNOPSIS](#SYNOPSIS)

```
nvme [<global-options>] list-subsys <device>
```

# [DESCRIPTION](#DESCRIPTION)

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.

# [OPTIONS](#OPTIONS)

# [GLOBAL OPTIONS](#GLOBAL_OPTIONS)

The following options are defined at the top-level nvme command and are available to this subcommand:

--dry-run

Print the command that would be executed, but do not actually execute it.

--no-ioctl-probing

Disable probing for 64-bit IOCTL support.

--no-retries

Disable retry logic on transient errors.

-o &lt;fmt&gt;, --output-format=&lt;fmt&gt;

Set the reporting format to *normal*, *tabular, 'json*, or *binary*. Only one output format may be used at a time.

--output-format-version=&lt;version&gt;

Select the output format version. Version *1* uses the original field naming, while version *2* (default) provides more consistent and script-friendly field names. Other versions are rejected.

--quiet

Suppress informational messages. Errors are still reported, and --quiet cancels any --verbose for the library log level.

--set-options=&lt;key=value&gt;\[,&lt;key=value&gt;...]

Set libnvme library options for this invocation. Supported keys are *force-4k*, *mi-probe-enabled*, *test-base-dir* and *test-sysfs-dir*.

--timeout=&lt;ms&gt;

Set the timeout for the command in milliseconds. *infinite* or *-1* waits without a time limit (0xffffffff).

-v, --verbose

Increase the level of detail in the output. May be specified multiple times to further increase verbosity.

These options can also be set as machine-wide defaults in [nvme-cli.conf(5)](/man/os/nvme-cli/nvme-cli.conf.5). A command-line flag always overrides the file.

# [EXAMPLES](#EXAMPLES)

```
root@host[1]# 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
```

```
root@host[1]# 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",


          "AddressDetails" : {


            "traddr" : "1.1.1.3",


            "host_traddr" : "1.1.1.1",


            "trsvcid" : "4420"


          }


        },


        {


          "Name" : "nvme1",


          "Transport" : "rdma",


          "Address" : "traddr=1.1.1.3,trsvcid=4420,host_traddr=1.1.1.2",


          "AddressDetails" : {


            "traddr" : "1.1.1.3",


            "host_traddr" : "1.1.1.2",


            "trsvcid" : "4420"


          }


        }


      ]


    },


    {


      "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",


          "AddressDetails" : {


            "traddr" : "1.1.1.3",


            "host_traddr" : "1.1.1.2",


            "trsvcid" : "4420"


          }


        },


        {


          "Name" : "nvme3",


          "Transport" : "rdma",


          "Address" : "traddr=1.1.1.3,trsvcid=4420,host_traddr=1.1.1.1",


          "AddressDetails" : {


            "traddr" : "1.1.1.3",


            "host_traddr" : "1.1.1.1",


            "trsvcid" : "4420"


          }


        }


      ]


    }


  ]
}
```

# [NVME](#NVME)

Part of the nvme-user suite

# [NOTES](#NOTES)

1\.

root@host

mailto:root@host

10/30/2026 NVMe

---

Document: nvme-list-subsys(1) from nvme-cli 3.2-r0 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli