From dc597ce8df5ae6efd2728a2d7ba7d92486028f79 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 2 Jul 2021 22:40:30 +0200 Subject: Adding upstream version 1.12. Signed-off-by: Daniel Baumann --- Documentation/nvme-dir-send.txt | 124 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 Documentation/nvme-dir-send.txt (limited to 'Documentation/nvme-dir-send.txt') diff --git a/Documentation/nvme-dir-send.txt b/Documentation/nvme-dir-send.txt new file mode 100644 index 0000000..eb5dad0 --- /dev/null +++ b/Documentation/nvme-dir-send.txt @@ -0,0 +1,124 @@ +nvme-dir-send(1) +================ + +NAME +---- +nvme-dir-send - Issue a directive send command, returns applicable results + +SYNOPSIS +-------- +[verse] +'nvme dir-send' [--namespace-id= | -n ] + [--data-len= | -l ] + [--dir-type= | -D ] + [--dir-spec= | -S ] + [--dir-oper= | -O ] + [--endir= | -e ] + [--target-dir= | -T ] + [--human-readable | -H] + [--raw-binary | -b] + +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 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 :: +--namespace-id=:: + Retrieve the feature for the given nsid. This is optional and + most features do not use this value. + +-D :: +--dir-type=:: + Directive type + +-S :: +--dir-spec=:: + Directive specific + +-O :: +--dir-oper=:: + Directive operation + +-T :: +--target-dir=:: + Target directive of the operation + +-e :: +--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=:: + 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. + +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 -- cgit v1.2.3