---
name: "nvme-list-subsys"
section: "1"
platform: "linux"
package: "nvme-cli"
version: "3.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/nvme-list-subsys"
---

# nvme-list-subsys(1)

List all NVMe subsystems

## NAME

nvme-list-subsys - List all NVMe subsystems

## SYNOPSIS

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

## 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

## 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 \<fmt\>, --output-format=\<fmt\>

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

- \--output-format-version=\<version\>

  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=\<key=value\>\[,\<key=value\>...\]

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

- \--timeout=\<ms\>

  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)](/nvme-cli.conf/5.md). A command-line flag always overrides the file.

## 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

Part of the nvme-user suite

## NOTES

- 1\.

  root@host

  mailto:root@host