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 <jimharris@FreeBSD.org>,  with
       contributions from Joe Golio at EMC.

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

Debian                                            May 18, 2019                                            NVD(4)