nvme-cli/Documentation/nvme-cmdset-ind-id-ns.1

'\" t
.\"     Title: nvme-cmdset-ind-id-ns
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 03/31/2023
.\"    Manual: NVMe Manual
.\"    Source: NVMe
.\"  Language: English
.\"
.TH "NVME\-CMDSET\-IND\-I" "1" "03/31/2023" "NVMe" "NVMe Manual"
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.el       .ds Aq '
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.nh
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.SH "NAME"
nvme-cmdset-ind-id-ns \- Send NVMe I/O Command Set Independent Identify Namespace, return result and structure\&.
.SH "SYNOPSIS"
.sp
.nf
\fInvme cmdset\-ind\-id\-ns\fR <device> [\-\-namespace\-id=<nsid> | \-n <nsid>]
                        [\-b | \-\-raw\-binary]
                    [\-\-human\-readable | \-H]
                    [\-\-output\-format=<fmt> | \-o <fmt>]
.fi
.SH "DESCRIPTION"
.sp
For the NVMe device given, sends an I/O Command Set Independent identify namespace command and provides the result and returned structure\&.
.sp
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 \*(Aq\-\-namespace\-id\*(Aq 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\&.
.sp
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\&.
.SH "OPTIONS"
.PP
\-n <nsid>, \-\-namespace\-id=<nsid>
.RS 4
Retrieve the identify namespace structure for the given nsid\&. This is required for the character devices, or overrides the block nsid if given\&.
.RE
.PP
\-b, \-\-raw\-binary
.RS 4
Print the raw buffer to stdout\&. Structure is not parsed by program\&. This overrides the vendor specific and human readable options\&.
.RE
.PP
\-H, \-\-human\-readable
.RS 4
This option will parse and format many of the bit fields into human\-readable formats\&.
.RE
.PP
\-o <format>, \-\-output\-format=<format>
.RS 4
Set the reporting format to
\fInormal\fR,
\fIjson\fR, or
\fIbinary\fR\&. Only one output format can be used at a time\&.
.RE
.SH "EXAMPLES"
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Has the program interpret the returned buffer and display the known fields in a human readable format:
.sp
.if n \{\
.RS 4
.\}
.nf
# nvme cmdset\-ind\-id\-ns /dev/nvme0n1
.fi
.if n \{\
.RE
.\}
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
If using the character device or overriding namespace id:
.sp
.if n \{\
.RS 4
.\}
.nf
# nvme cmdset\-ind\-id\-ns /dev/nvme0 \-n 1
# nvme cmdset\-ind\-id\-ns /dev/nvme0n1 \-n 1
# nvme cmdset\-ind\-id\-ns /dev/nvme0 \-\-namespace\-id=1
.fi
.if n \{\
.RE
.\}
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Have the program return the raw structure in binary:
.sp
.if n \{\
.RS 4
.\}
.nf
# nvme cmdset\-ind\-id\-ns /dev/nvme0n1 \-\-raw\-binary > id_ns\&.raw
# nvme cmdset\-ind\-id\-ns /dev/nvme0n1 \-b > id_ns\&.raw
.fi
.if n \{\
.RE
.\}
.sp
It is probably a bad idea to not redirect stdout when using this mode\&.
.RE
.SH "NVME"
.sp
Part of the nvme\-user suite