Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
NVD(4)			    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  notifi-
       cation 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  par-
       titioned.

CONFIGURATION
       The  nvd	 driver	defines	a system-wide maximum delete size for NVMe de-
       vices.  The default is 1GB.  To select a	different value, set the  fol-
       lowing 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 <jimharris@FreeBSD.org>, with contributions from	Joe  Golio  at
       EMC.

       This man	page was written by Jim	Harris <jimharris@FreeBSD.org>.

FreeBSD	13.2			 May 18, 2019				NVD(4)

NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION | SEE ALSO | HISTORY | AUTHORS

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=nvd&sektion=4&manpath=FreeBSD+14.1-RELEASE+and+Ports>

home | help