nvd4
Nvm express disk driver
Usage
device nvme device nvd
Overview
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.
Hardware
The nvd driver supports NVMe storage devices using NVMe namespaces.
Loader tunables
The following settings can be configured at the loader(8) prompt, or set in loader.conf(5):
- hw.nvd.delete_max
-
System-wide maximum delete size for NVMe devices in bytes. The default is 1GB.
Releases
32 releases since FreeBSD 9.2-RELEASE; the text changed 20 times.