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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 19:41:32 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 19:41:32 +0000 |
| commit | f26f66d866ba1a9f3204e6fdfe2b07e67b5492ad (patch) | |
| tree | c953c007cbe4f60a147ab62f97937d58abb2e9ca /Documentation/nvme-get-property.txt | |
| parent | Initial commit. (diff) | |
| download | nvme-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>
Diffstat (limited to 'Documentation/nvme-get-property.txt')
| -rw-r--r-- | Documentation/nvme-get-property.txt | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/Documentation/nvme-get-property.txt b/Documentation/nvme-get-property.txt new file mode 100644 index 0000000..601b8a4 --- /dev/null +++ b/Documentation/nvme-get-property.txt @@ -0,0 +1,68 @@ +nvme-get-property(1) +==================== + +NAME +---- +nvme-get-property - Reads and shows the defined NVMe controller property +for NVMe over Fabric + +SYNOPSIS +-------- +[verse] +'nvme get-property' <device> [--offset=<offset> | -O <offset>] + [--human-readable | -H] + [--output-format=<fmt> | -o <fmt>] [--verbose | -v] + +DESCRIPTION +----------- +Reads and shows the defined NVMe controller property for NVMe over Fabric. + +OPTIONS +------- +-O:: +--offset:: + The offset of the property. One of CAP=0x0, VS=0x8, CC=0x14, CSTS=0x1c, NSSR=0x20 + +-H:: +--human-readable: + Show the fields packed in the property + +-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 +-------- +* The following will run the get-property command with offset 0 ++ +------------ +# nvme get-property /dev/nvme0 --offset=0x0 --human-readable +------------ + +BUGS +---- +Currently the CAP value is truncated to 32 bits due to a limitation in +the ioctl interface. + +In a recent enough kernel, the 64 bit value is shown in kernel traces. + +* First enable traces by this command ++ +------------ +# echo 1 > /sys/kernel/debug/tracing/events/nvme/enable +------------ + +* Then look for NVMe Fabrics command (0x7f) at trace ++ +------------ +/sys/kernel/debug/tracing/trace +------------ + +NVME +---- +Part of the nvme-user suite |