'\" t
.\"     Title: nvme-resv-acquire
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 01/16/2026
.\"    Manual: NVMe Manual
.\"    Source: NVMe
.\"  Language: English
.\"
.TH "NVME\-RESV\-ACQUIRE" "1" "01/16/2026" "NVMe" "NVMe Manual"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
nvme-resv-acquire \- Acquire an nvme reservation
.SH "SYNOPSIS"
.sp
.nf
\fInvme resv\-acquire\fR <device> [\-\-namespace\-id=<nsid> | \-n <nsid>]
                        [\-\-crkey=<crkey> | \-c <crkey>]
                        [\-\-prkey=<prkey> | \-p <prkey>]
                        [\-\-rtype=<rtype> | \-t <rtype>]
                        [\-\-racqa=<racqa> | \-a <racqa>] [\-\-iekey | \-i]
                        [\-\-output\-format=<fmt> | \-o <fmt>] [\-\-verbose | \-v]
                        [\-\-timeout=<timeout>]
.fi
.SH "DESCRIPTION"
.sp
The Reservation Acquire command is used to acquire a reservation on a namespace, preempt a reservation held on a namespace, and abort a reservation held on a namespace\&.
.SH "OPTIONS"
.PP
\-n <nsid>, \-\-namespace\-id=<nsid>
.RS 4
Override the nsid field\&. If using the admin character device, this parameter is required\&.
.RE
.PP
\-c <crkey>, \-\-crkey=<crkey>
.RS 4
Current Reservation Key: The field specifies the current reservation key associated with the host\&. If the IEKEY bit is set to \(oq1\(cq in the command, then the CRKEY check succeeds regardless of the value in this field\&.
.RE
.PP
\-p <prkey>, \-\-prkey=<prkey>
.RS 4
Preempt Reservation Key: If the Reservation Acquire Action is set to 001b (i\&.e\&., Preempt) or 010b (i\&.e\&., Preempt and Abort), then this field specifies the reservation key to be unregistered from the namespace\&. For all other Reservation Acquire Action values, this field is reserved\&.
.RE
.PP
\-t <rtype>, \-\-rtype=<rtype>
.RS 4
Reservation Type: This field specifies the type of reservation to be created\&.
.TS
allbox tab(:);
lt lt
lt lt
lt lt
lt lt
lt lt
lt lt
lt lt
lt lt
lt lt.
T{
Value
T}:T{
Definition
T}
T{
0h
T}:T{
Reserved
T}
T{
1h
T}:T{
Write Exclusive Reservation
T}
T{
2h
T}:T{
Exclusive Access Reservation
T}
T{
3h
T}:T{
Write Exclusive \- Registrants Only Reservation
T}
T{
4h
T}:T{
Exclusive Access \- Registrants Only Reservation
T}
T{
5h
T}:T{
Write Exclusive \- All Registrants Reservation
T}
T{
6h
T}:T{
Exclusive Access \- All Registrants Reservation
T}
T{
07h\-FFh
T}:T{
Reserved
T}
.TE
.sp 1
.RE
.PP
\-a <racqa>, \-\-racqa=<racqa>
.RS 4
Reservation Acquire Action: This field specifies the action that is performed by the command\&.
.TS
allbox tab(:);
lt lt
lt lt
lt lt
lt lt
lt lt.
T{
Value
T}:T{
Definition
T}
T{
0
T}:T{
Acquire
T}
T{
1
T}:T{
Preempt
T}
T{
2
T}:T{
Preempt and Abort
T}
T{
3\-7
T}:T{
Reserved
T}
.TE
.sp 1
.RE
.PP
\-i, \-\-iekey
.RS 4
Ignore Existing Key: If this bit is set to a
\fI1\fR, then the Current Reservation Key (CRKEY) check is disabled and the command shall succeed regardless of the CRKEY field value\&.
.sp
Indicator option, defaults to
\fI0\fR\&.
.RE
.PP
\-o <fmt>, \-\-output\-format=<fmt>
.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
.PP
\-v, \-\-verbose
.RS 4
Increase the information detail in the output\&.
.RE
.PP
\-\-timeout=<timeout>
.RS 4
Override default timeout value\&. In milliseconds\&.
.RE
.SH "EXAMPLES"
.sp
No examples yet
.SH "NVME"
.sp
Part of the nvme\-user suite
