'\" t

.\"     Title: nvme-wdc-namespace-resize

.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]

.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>

.\"      Date: 04/24/2020

.\"    Manual: NVMe Manual

.\"    Source: NVMe

.\"  Language: English

.\"

.TH "NVME\-WDC\-NAMESPACE" "1" "04/24/2020" "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-wdc-namespace-resize \- Resizes the device\*(Aqs namespace\&.

.SH "SYNOPSIS"

.sp

.nf

\fInvme wdc namespace\-resize\fR <device> [\-\-nsid=<NAMSPACE ID>, \-n <NAMSPACE ID>] [\-\-op_option=<OP OPTION>, \-o <OP OPTION>]

.fi

.SH "DESCRIPTION"

.sp

For the NVMe device given, sends the WDC Vendor Specific Command that modifies the namespace size reported by the device\&.

.sp

The <device> parameter is mandatory NVMe character device (ex: /dev/nvme0)\&.

.sp

This will only work on WDC devices supporting this feature\&. Results for any other device are undefined\&.

.SH "OPTIONS"

.PP

\-n <NAMSPACE ID>, \-\-namespace\-id=<NAMSPACE_ID>

.RS 4

Namespace ID; ID of the namespace to resize

.RE

.PP

\-o <OP OPTION>, \-\-op\-option=<OP OPTION>

.RS 4

Overprovisioning Option; defaults to 0xF

.sp

.if n \{\

.RS 4

.\}

.nf

Valid Values:

0x1 \- 7% of Original TNVMCAP reported value

0x2 \- 28% of Original TNVMCAP reported value

0x3 \- 50% of Original TNVMCAP reported value

0xF \- 0% of Original TNVMCAP reported value (original config)

All other values \- reserved

.fi

.if n \{\

.RE

.\}

.RE

.SH "EXAMPLES"

.sp

.RS 4

.ie n \{\

\h'-04'\(bu\h'+03'\c

.\}

.el \{\

.sp -1

.IP \(bu 2.3

.\}

Resizes namespace 1 to 50% of the orginal TNVMCAP reported value:

.sp

.if n \{\

.RS 4

.\}

.nf

# nvme wdc namespace\-resize /dev/nvme0 \-n 1 \-o 3

.fi

.if n \{\

.RE

.\}

.RE

.sp

.RS 4

.ie n \{\

\h'-04'\(bu\h'+03'\c

.\}

.el \{\

.sp -1

.IP \(bu 2.3

.\}

Resizes namespace 2 to 7% of the orginal TNVMCAP reported value:

.sp

.if n \{\

.RS 4

.\}

.nf

# nvme wdc namespace\-resize /dev/nvme0 \-\-namespace\-id=2 \-\-op\-option=1

.fi

.if n \{\

.RE

.\}

.RE

.SH "NVME"

.sp

Part of the nvme\-user suite\&.