NVME-GET-FEATURE(1) | NVMe Manual | NVME-GET-FEATURE(1) |
nvme-get-feature - Gets an NVMe feature, returns applicable results
nvme get-feature <device> [--namespace-id=<nsid> | -n <nsid>]
[--feature-id=<fid> | -f <fid>] [--cdw11=<cdw11>]
[--data-len=<data-len> | -l <data-len>]
[--sel=<select> | -s <select>]
[--raw-binary | -b]
[--human-readable | -H]
Submits an NVMe Get Feature admin command and returns the applicable results. This may be the feature’s value, or may also include a feature structure if the feature requires it (ex: LBA Range Type).
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 feature’s structure (if applicable) may be 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.
-n <nsid>, --namespace-id=<nsid>
-f <fid>, --feature-id=<fid>
-s <select>, --sel=<select>
Select | Description |
0 | Current |
1 | Default |
2 | Saved |
3 | Supported capabilities |
4–7 | Reserved |
-l <data-len>, --data-len=<data-len>
--cdw11=<cdw11>
-b, --raw-binary
-H, --human-readable
# nvme get-feature /dev/nvme0 -f 7
# nvme get-feature /dev/nvme0 -f 3
# nvme get-feature /dev/nvme0 -f 0xc0 -l 512
# nvme get-feature /dev/nvme0 -f 3 --raw-binary > lba_range.raw
It is probably a bad idea to not redirect stdout when using this mode.
Part of the nvme-user suite
01/08/2019 | NVMe |