DOKK / manpages / debian 11 / nvme-cli / nvme-wdc-namespace-resize.1.en
NVME-WDC-NAMESPACE(1) NVMe Manual NVME-WDC-NAMESPACE(1)

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

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

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.

-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

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

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

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

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

Part of the nvme-user suite.

04/24/2020 NVMe