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| -rw-r--r-- | Documentation/nvme-set-feature.txt | 79 |
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diff --git a/Documentation/nvme-set-feature.txt b/Documentation/nvme-set-feature.txt new file mode 100644 index 0000000..ca1874d --- /dev/null +++ b/Documentation/nvme-set-feature.txt @@ -0,0 +1,79 @@ +nvme-set-feature(1) +=================== + +NAME +---- +nvme-set-feature - Sets an NVMe feature, returns applicable results + +SYNOPSIS +-------- +[verse] +'nvme set-feature' <device> [--namespace-id=<nsid> | -n <nsid>] + [--feature-id=<fid> | -f <fid>] [--value=<value> | -v <value>] + [--data-len=<data-len> | -l <data-len>] + [--data=<data-file> | -d <data-file>] + [--save| -s] + +DESCRIPTION +----------- +Submits an NVMe Set Feature admin command and returns the applicable +results. This may be the feature's value, or may also include a feature +structure if the feature requires it (ex: LBA Range Type). + +The <device> parameter is mandatory and may be either the NVMe character +device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1). + +On success, the value sent to the device is displayed + +OPTIONS +------- +-n <nsid>:: +--namespace-id=<nsid>:: + Sets the feature for the given nsid. This is optional and + most features do not use this value. + +-f <fid>:: +--feature-id=<fid>:: + The feature id to send with the command. Value provided should + be in hex. + +-l <data-len>:: +--data-len=<data-len>:: + The data length for the buffer submitted for this feature. Most + known features do not use this value. The exceptions are LBA + Range Type and host identifier. + +-d <data-file>:: +--data=<data-file>:: + The data file for the buffer submitted for this feature. Most + known features do not use this value. The exceptions is LBA + Range Type and host identifier. This defaults to STDIN so files + and echo can be piped. + +-v <value>:: +--value=<value>:: + The value for command dword 11, the value you want to set the + feature to. + +-s:: +--save:: + Save the attribute so that it persists through all power states and resets. + +EXAMPLES +-------- +* Sets the Power State (PS) to 1 in feature id 2: ++ +------------ +# nvme set-feature /dev/nvme0 -f 2 /dev/nvme0n1 -v 0x1 +------------ ++ + +* Sets the host id to the ascii string. ++ +------------ +# echo "abcdefgh" | nvme set-feature /dev/nvme0 -f 0x81 -l 8 +------------ + +NVME +---- +Part of the nvme-user suite |