nvme-get-property(1)

# nvme-get-property(1) Manual Page

## NAME

nvme-get-property - Reads and shows the defined NVMe controller property for NVMe over Fabric

## SYNOPSIS

    nvme get-property <device> [--offset=<offset> | -o <offset>]
                                    [--human-readable | -H ]

## DESCRIPTION

Reads and shows the defined NVMe controller property for NVMe over Fabric.

## OPTIONS

-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

## EXAMPLES

- The following will run the get-property command with offset 0

      # nvme get-property /dev/nvme0 --offset=0x0 --human-readable

## BUGS

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

## NVME

Part of the nvme-user suite