virtio_scsi
—
VirtIO SCSI driver
To compile this driver into the kernel, place the following lines in your kernel
configuration file:
device
virtio_scsi
Alternatively, to load the driver as a module at boot time, place the following
line in
loader.conf(5):
The
virtio_scsi
device driver provides
support for VirtIO SCSI devices.
Tunables can be set at the
loader(8)
prompt before booting the kernel or stored in
loader.conf(5).
- hw.vtscsi.bus_reset_disable
- In the initial QEMU release with VirtIO SCSI support, in-flight operations
were not aborted when stopping the device, rendering bus reset
ineffective. This tunable disables attempts to issue reset bus commands.
The default value is 1.
To enable debugging prints from the
virtio_scsi
driver, set the
variable, where X is the adapter number, either in
loader.conf(5)
or via
sysctl(8).
The following bits have the described effects:
- 0x01
- Enable informational prints.
- 0x02
- Enable prints for driver errors.
- 0x04
- Enable tracing prints.
virtio(4)
The
virtio_scsi
driver was written by
Bryan Venteicher
<
bryanv@FreeBSD.org>.
It first appeared in
FreeBSD 10.0.