Adding upstream version 1.12.

Signed-off-by: Daniel Baumann <daniel@debian.org>

Documentation/nvme-ns-descs.txt

@@ -0,0 +1,74 @@
+nvme-ns-descs(1)
+================
+
+NAME
+----
+nvme-ns-descs - Send NVMe Identify for a list of Namespace Identification
+		Descriptor structure, return result and structure
+
+SYNOPSIS
+--------
+[verse]
+'nvme ns-descs' <device> [--namespace-id=<nsid> | -n <nsid>]
+			[--raw-binary | -b]
+			[--output-format=<fmt> | -o <fmt>]
+
+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.
+
+-b::
+--raw-binary::
+	Print the raw buffer to stdout. Structure is not parsed by
+	program.
+
+-o <format>::
+--output-format=<format>::
+	Set the reporting format to 'normal', 'json', or 'binary'.
+	Only one output format can be used at a time.
+
+
+EXAMPLES
+--------
+* If using the character device or overriding namespace #2:
++
+------------
+# nvme ns-descs /dev/nvme0 -n 1
+# nvme ns-descs /dev/nvme0n1 -n 2
+# nvme ns-descs /dev/nvme0 --namespace-id=1
+------------
++
+
+* Have the program return the raw structure in binary:
++
+------------
+# nvme ns-descs /dev/nvme0n1 --raw-binary > ns_descs.raw
+# nvme 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