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

nvme-list-subsys - List all NVMe subsystems

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

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.

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

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

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"
}
]
}
] }

Part of the nvme-user suite

1.
root@host
mailto:root@host
04/08/2022 NVMe