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 nvdOr, to load the driver as a module at boot, place the following lines in loader.conf(5):
nvme_load="YES" nvd_load="YES"
DESCRIPTION
Thenvd 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
HISTORY
The nvd driver first appeared in
FreeBSD 9.2.
AUTHORS
The nvd driver was developed by Intel and
originally written by Jim Harris
<jimharris@FreeBSD.org>,
with contributions from Joe Golio at EMC.
This man page was written by Jim Harris <jimharris@FreeBSD.org>.