nvme-id-ns-descs(1)
===================

NAME
----
nvme-id-ns-descs - Send NVMe Identify for a list of Namespace Identification
		Descriptor structure, return result and structure

SYNOPSIS
--------
[verse]
'nvme' [<global-options>] 'id ns-descs' <device>
			[--namespace-id=<nsid> | -n <nsid>]
			[--raw-binary | -b]

DESCRIPTION
-----------
For the NVMe device given, sends an identify for a list of namespace
identification descriptor structures 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).
If the character device is given, the `'--namespace-id'` option is
mandatory, otherwise it will use the ns-id of the namespace for the block
device you opened. For block devices, the ns-id used can be overridden
with the same option.

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.

OPTIONS
-------
-n <nsid>::
--namespace-id=<nsid>::
	Retrieve the identify namespace identification descriptor structure
	for the given nsid. This is required for the character devices, or
	overrides the block nsid if given.
	The broadcast value 0xffffffff can also be given as 'all' or '-1'.

-b::
--raw-binary::
	Print the raw buffer to stdout. Structure is not parsed by
	program.

include::global-options.txt[]

EXAMPLES
--------
* If using the character device or overriding namespace #2:
+
------------
# nvme id ns-descs /dev/nvme0 -n 1
# nvme id ns-descs /dev/nvme0n1 -n 2
# nvme id ns-descs /dev/nvme0 --namespace-id=1
------------
+

* Have the program return the raw structure in binary:
+
------------
# nvme id ns-descs /dev/nvme0n1 --raw-binary > ns_descs.raw
# nvme id ns-descs /dev/nvme0n1 -b > ns_descs.raw
------------
+
It is probably a bad idea to not redirect stdout when using this mode.

NVME
----
Part of the nvme-user suite
