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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 19:41:32 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 19:41:32 +0000
commitf26f66d866ba1a9f3204e6fdfe2b07e67b5492ad (patch)
treec953c007cbe4f60a147ab62f97937d58abb2e9ca /Documentation/nvme-dir-receive.txt
parentInitial commit. (diff)
downloadnvme-cli-f26f66d866ba1a9f3204e6fdfe2b07e67b5492ad.tar.xz
nvme-cli-f26f66d866ba1a9f3204e6fdfe2b07e67b5492ad.zip
Adding upstream version 2.8.upstream/2.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+nvme-dir-receive(1)
+===================
+
+NAME
+----
+nvme-dir-receive - Send a directive receive command, returns applicable results
+
+SYNOPSIS
+--------
+[verse]
+'nvme dir-receive' <device> [--namespace-id=<nsid> | -n <nsid>]
+ [--data-len=<data-len> | -l <data-len>]
+ [--dir-type=<dtype> | -D <dtype>]
+ [--dir-spec=<dspec> | -S <dspec>]
+ [--dir-oper=<doper> | -O <doper>]
+ [--req-resource=<nsr> | -r <nsr>]
+ [--human-readable | -H] [--raw-binary | -b]
+ [--output-format=<fmt> | -o <fmt>] [--verbose | -v]
+
+DESCRIPTION
+-----------
+Submits an NVMe Directive Receive admin command and returns the applicable
+results. This may be the combination of directive type, and operation, as
+well as number of requested resource if specific operation needs it.
+
+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 returned directive's parameter structure (if applicable) is
+returned in one of several ways depending on the option flags; the
+structure may parsed by the program and printed in a readable format
+if it is a known structure, displayed in hex, or the raw buffer may be
+printed to stdout for another program to parse.
+
+OPTIONS
+-------
+-n <nsid>::
+--namespace-id=<nsid>::
+ Retrieve the feature for the given nsid. This is optional and
+ most features do not use this value.
+
+-D <dtype>::
+--dir-type=<dtype>::
+ Directive type
+
+-S <dspec>::
+--dir-spec=<dspec>::
+ Directive specific
+
+-O <doper>::
+--dir-oper=<doper>::
+ Directive operation
+
+-r <nsr>::
+--req-resource=<nsr>::
+ Directive requested resource count
++
+[]
+|==================
+|Select|Description
+|0|Current
+|1|Default
+|2|Saved
+|3|Supported capabilities
+|4–7|Reserved
+|==================
+
+-l <data-len>::
+--data-len=<data-len>::
+ The data length for the buffer returned for this feature. Most
+ known features do not use this value. The exception is LBA
+ Range Type
+
+-b::
+--raw-binary::
+ Print the raw receive buffer to stdout if the command returns
+ a structure.
+
+-H::
+--human-readable::
+ Print the decoded receive buffer to stdout if the command returns
+ a structure.
+
+-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
+--------
+* Identify directive type supported :
++
+------------
+# nvme dir-receive /dev/nvme0 --dir-type 0 --dir-oper 1 --human-readable
+------------
++
+
+* Get stream directive parameters :
++
+------------
+# nvme dir-receive /dev/nvme0 --dir-type 1 --dir-oper 1 --human-readable
+------------
++
+
+* Allocate 3 streams for namespace 1
++
+------------
+# nvme dir-receive /dev/nvme0n1 --dir-type 1 --dir-oper 3 --req-resource 3 --human-readable
+------------
++
+
+* Get streams directive status :
++
+------------
+# nvme dir-receive /dev/nvme0 --dir-type 1 --dir-oper 2 --human-readable
+------------
++
+It is probably a bad idea to not redirect stdout when using this mode.
+
+NVME
+----
+Part of the nvme-user suite