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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 notification of ex- isting 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. HARDWARE The nvd driver supports NVMe storage devices using NVMe namespaces. 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>. FreeBSD ports 15.quarterly October 2, 2025 NVD(4)
NAME | SYNOPSIS | DESCRIPTION | HARDWARE | CONFIGURATION | SEE ALSO | HISTORY | AUTHORS
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