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-rw-r--r-- | Documentation/nvme-dsm.txt | 92 |
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diff --git a/Documentation/nvme-dsm.txt b/Documentation/nvme-dsm.txt new file mode 100644 index 0000000..6a2e61a --- /dev/null +++ b/Documentation/nvme-dsm.txt @@ -0,0 +1,92 @@ +nvme-dsm(1) +=========== + +NAME +---- +nvme-dsm - Send NVMe Data Set Management, return results + +SYNOPSIS +-------- +[verse] +'nvme dsm' <device> [--namespace-id=<nsid> | -n <nsid>] + [--ctx-attrs=<attribute-list,> | -a <attribute-list,>] + [--blocks=<nlb-list,> | -b <nlb-list,>] + [--slbs=<slba-list,> | -s <slba-list,>] + [--ad=<deallocate> | -d <deallocate>] + [--idw=<write> | -w <write>] [--idr=<read> | -r <read>] + [--cdw11=<cdw11> | -c <cdw11>] + [--output-format=<fmt> | -o <fmt>] [--verbose | -v] + +DESCRIPTION +----------- +For the NVMe device given, sends a Data Set Management command and +provides the result and returned structure. + +The <device> parameter is mandatory and may be either the NVMe character +device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1). +If the character device is given, the `'--namespace-id'` option is +mandatory, otherwise it will use the ns-id of the namespace for the block +device you opened. For block devices, the ns-id used can be overridden +with the same option. + +You must specify at least one of the values for range list. If the range +lists provided do not list the same number of elements, the default +values for the remaining in the range will be set to 0. + +The command dword 11 may be provided at the command line. For convenience, +the current defined attributes (discard, integral read/write) for a +data-set management have flags. If cdw11 is specified, this will override +any settings from the flags may have provided. + +OPTIONS +------- +-n <nsid>:: +--namespace-id=<nsid>:: + Sends the command with the requested nsid. This is required for the + character devices, or overrides the block nsid if given. + +-a <attribute-list,>:: +--ctx-attrs=<attribute-list>:: + Comma separated list of the context attributes in each range + +-b <nlb-list,>:: +--blocks=<nlb-list,>:: + Comma separated list of the number of blocks in each range + +-s <slba-list,>:: +--slbs=<slba-list,>:: + Comma separated list of the starting block in each range + +-d <deallocate>:: +--ad=<deallocate>:: + Attribute Deallocate. + +-w <write>:: +--idw=<write>:: + Attribute Integral Dataset for Write. + +-r <read>:: +--idr=<read>:: + Attribute Integral Dataset for Read. + +-c <cdw11>:: +--cdw11=<cdw11>:: + All the command command dword 11 attributes. Use exclusive from + specifying individual attributes + +-o <fmt>:: +--output-format=<fmt>:: + Set the reporting format to 'normal', 'json' or 'binary'. Only one + output format can be used at a time. + +-v:: +--verbose:: + Increase the information detail in the output. + +EXAMPLES +-------- +No examples yet + +NVME +---- +Part of the nvme-user suite |