nvme-primary-ctrl-caps − Send identify Primary Controller Caps, return result and structure
nvme primary−ctrl−caps <device> [−o <format> | −−output−format=<format>]
For the NVMe device given, sends an identify primary Controller caps command and provides the result and returned structure.
The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).
On success, the structure may be returned in one of several ways depending on the option flags; the structure may be parsed by the program or the raw buffer may be printed to stdout.
−o <format>, −−output−format=<format>
Set the reporting format to normal, json, or binary. Only one output format can be used at a time.
−H, −−human−readable
This option will parse and format many of the bit fields into human−readable formats.
• Get Primary Ctrl Caps of the device in default format
# nvme primary−ctrl−caps /dev/nvme0
• Has the program interpret the returned buffer and display the known fields in a human readable format:
# nvme
primary−ctrl−caps /dev/nvme0
−−human−readable
# nvme primary−ctrl−caps /dev/nvme0 −H
Part of the nvme−user suite