nvme-get-property − Reads and shows the defined NVMe controller property for NVMe over Fabric
nvme
get−property <device>
[−−offset=<offset> | −o
<offset>]
[−−human−readable | −H ]
Reads and shows the defined NVMe controller property for NVMe over Fabric.
−o, −−offset
The offset of the property. One of CAP=0x0, VS=0x8, CC=0x14, CSTS=0x1c, NSSR=0x20
−H
−−human−readable: Show the fields packed in the property
• The following will run the get−property command with offset 0
# nvme get−property /dev/nvme0 −−offset=0x0 −−human−readable
Currently the CAP value is truncated to 32 bits due to a limitation in the ioctl interface.
In a recent enough kernel, the 64 bit value is shown in kernel traces.
• First enable traces by this command
# echo 1 > /sys/kernel/debug/tracing/events/nvme/enable
• Then look for NVMe Fabrics command (0x7f) at trace
/sys/kernel/debug/tracing/trace
Part of the nvme−user suite