NVD(4) FreeBSD Kernel Interfaces Manual NVD(4)
NAME
nvd - NVM Express disk driver
SYNOPSIS
To compile this driver into your kernel, place the following lines in
your kernel configuration file:
device nvme
device nvd
Or, to load the driver as a module at boot, place the following lines in
loader.conf(5):
nvme_load="YES"
nvd_load="YES"
DESCRIPTION
The nvd driver exposes NVM Express (NVMe) namespaces as disks to the
kernel disk storage API. It depends on the nvme(4) driver for
notification of existing NVMe namespaces and submission of NVM I/O
commands.
Device nodes from the nvd driver will have the format /dev/nvdX and are
GEOM(4) disks which can be partitioned by geom(8). Note that device
nodes from the nvme(4) driver are not GEOM(4) disks and cannot be
partitioned.
CONFIGURATION
The nvd driver defines a system-wide maximum delete size for NVMe
devices. The default is 1GB. To select a different value, set the
following tunable in loader.conf(5):
hw.nvd.delete_max=<delete size in bytes>
SEE ALSO
GEOM(4), nda(4), nvme(4), geom(8), nvmecontrol(8), disk(9)
HISTORY
The nvd driver first appeared in FreeBSD 9.2.
AUTHORS
The nvd driver was developed by Intel and originally written by Jim
Harris <
[email protected]>, with contributions from Joe Golio at EMC.
This man page was written by Jim Harris <
[email protected]>.
FreeBSD 14.1-RELEASE-p8 May 18, 2019 FreeBSD 14.1-RELEASE-p8