NVME-DIR-SEND(1) | NVMe Manual | NVME-DIR-SEND(1) |
NAME¶
nvme-dir-send - Issue a directive send command, returns applicable results
SYNOPSIS¶
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>
-D <dtype>, --dir-type=<dtype>
-S <dspec>, --dir-spec=<dspec>
-O <doper>, --dir-oper=<doper>
-T <tdir>, --target-dir=<nsr>
-e <endir>, --endir=<endir>
Select | Description |
0 | Current |
1 | Default |
2 | Saved |
3 | Supported capabilities |
4–7 | Reserved |
-l <data-len>, --data-len=<data-len>
-b, --raw-binary
-H, --human-readable
-o <fmt>, --output-format=<fmt>
-v, --verbose
-t <timeout>, --timeout=<timeout>
EXAMPLES¶
# nvme dir-send /dev/nvme0n1 --dir-type 0 --dir-oper 1 --target-dir 1 --endir 1
# nvme dir-send /dev/nvme0n1 --dir-type 0 --dir-oper 1 --target-dir 1 --endir 0
# nvme dir-send /dev/nvme0n1 --dir-type 1 --dir-oper 2
# 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
10/31/2024 | NVMe |