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nvme-cli/Documentation/nvme-list-subsys.txt
Daniel Baumann 965e6654c3
Merging upstream version 2.2.1.
Signed-off-by: Daniel Baumann <daniel@debian.org>
2025-02-16 12:18:36 +01:00

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nvme-list-subsys(1)
===================
NAME
----
nvme-list-subsys - List all NVMe subsystems
SYNOPSIS
--------
[verse]
'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
--------
[verse]
root@host# 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
[verse]
root@host# 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