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Diffstat (limited to 'Documentation/nvme-wdc-namespace-resize.txt')
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diff --git a/Documentation/nvme-wdc-namespace-resize.txt b/Documentation/nvme-wdc-namespace-resize.txt new file mode 100644 index 0000000..288430f --- /dev/null +++ b/Documentation/nvme-wdc-namespace-resize.txt @@ -0,0 +1,56 @@ +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 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 +------------ + +NVME +---- +Part of the nvme-user suite. |