nvme-cli/Documentation/nvme-wdc-namespace-resize.txt

nvme-wdc-namespace-resize(1)
============================

NAME
----
nvme-wdc-namespace-resize - Resizes the device's namespace.

SYNOPSIS
--------
[verse]
'nvme wdc namespace-resize' <device> [--nsid=<NAMSPACE ID>, -n <NAMSPACE ID>] [--op_option=<OP OPTION>, -o <OP OPTION>] 

DESCRIPTION
-----------

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

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

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

OPTIONS
-------
-n <NAMSPACE ID>::
--namespace-id=<NAMSPACE_ID>::
	Namespace ID; ID of the namespace to resize

-o <OP OPTION>::
--op-option=<OP OPTION>::
    Overprovisioning Option; defaults to 0xF
    
    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

EXAMPLES
--------
* Resizes namespace 1 to 50% of the original TNVMCAP reported value:
+
------------
# nvme wdc namespace-resize /dev/nvme0 -n 1 -o 3
------------
* Resizes namespace 2 to 7% of the original TNVMCAP reported value:
+
------------
# nvme wdc namespace-resize /dev/nvme0 --namespace-id=2 --op-option=1
------------

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