NVME-PRIMARY-CTRL() NVME-PRIMARY-CTRL()

nvme-primary-ctrl-caps - Send identify Primary Controller Caps, return result and structure

nvme primary-ctrl-caps <device> [--output-format=<fmt> | -o <fmt>] [--verbose | -v]

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.

-H, --human-readable

This option will parse and format many of the bit fields into human-readable formats.

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

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

-v, --verbose

Increase the information detail in the output.

•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