nvme-list-subsys - Man Page

List all NVMe subsystems

Synopsis

nvme list-subsys [-o <fmt> | --output-format=<fmt>] <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

-o <format>, --output-format=<format>

Set the reporting format to normal or json. Only one output format can be used at a time.

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"
        },
        {
          "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"
        }
      ]
    }
  ]
}

Nvme

Part of the nvme-user suite

Notes

1.

root@host
mailto:root@host

Info

04/24/2020 NVMe Manual