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|
nvme-dir-send(1)
================
NAME
----
nvme-dir-send - Issue a directive send command, returns applicable results
SYNOPSIS
--------
[verse]
'nvme dir-send' <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>]
[--endir=<endir> | -e <endir>]
[--target-dir=<tdir> | -T <tdir>]
[--human-readable | -H] [--raw-binary | -b]
[--output-format=<fmt> | -o <fmt>] [--verbose | -v]
[--timeout=<timeout> | -t <timeout>]
DESCRIPTION
-----------
Submits an NVMe Directive Send admin command and returns the applicable
results. This may be the combination of directive type, and operation, as
well as target directive and its enable/disable status of the operation,
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
-T <tdir>::
--target-dir=<nsr>::
Target directive of the operation
-e <endir>::
--endir=<endir>::
Target directive enable(1) or disable (0) operation
+
[]
|==================
|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.
-t <timeout>::
--timeout=<timeout>::
Override default timeout value. In milliseconds.
EXAMPLES
--------
* Enable streams directive :
+
------------
# nvme dir-send /dev/nvme0n1 --dir-type 0 --dir-oper 1 --target-dir 1 --endir 1
------------
+
* Disable streams directive :
+
------------
# nvme dir-send /dev/nvme0n1 --dir-type 0 --dir-oper 1 --target-dir 1 --endir 0
------------
+
* Release all allocated streams resource :
+
------------
# nvme dir-send /dev/nvme0n1 --dir-type 1 --dir-oper 2
------------
+
* Release stream ID 3 :
+
------------
# nvme dir-send /dev/nvme0 --dir-type 1 --dir-oper 1 --dir-spec 3
------------
+
It is probably a bad idea to not redirect stdout when using this mode.
NVME
----
Part of the nvme-user suite
|
