nvme-get-property

NVME-GET-PROPERTY(1) NVMe Manual NVME-GET-PROPERTY(1)

NAME

   nvme-get-property - Reads and shows the defined NVMe controller property for NVMe over Fabric

SYNOPSIS

   nvme get-property <device> [--offset=<offset> | -O <offset>]
                           [--human-readable | -H]
                           [--output-format=<fmt> | -o <fmt>] [--verbose | -v]
                           [--timeout=<timeout> | -t <timeout>]

DESCRIPTION

   Reads and shows the defined NVMe controller property for NVMe over Fabric.

OPTIONS

   -O <offset>, --offset=<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.

   -t <timeout>, --timeout=<timeout>
       Override default timeout value. In milliseconds.

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

NVMe 05/02/2025 NVME-GET-PROPERTY(1)