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VIRTIO_SCSI(4)	       FreeBSD Kernel Interfaces Manual		VIRTIO_SCSI(4)

NAME
     virtio_scsi -- VirtIO SCSI	driver

SYNOPSIS
     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):

	   virtio_scsi_load="YES"

DESCRIPTION
     The virtio_scsi device driver provides support for	VirtIO SCSI devices.

LOADER TUNABLES
     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.

DEBUGGING
     To	enable debugging prints	from the virtio_scsi driver, set the

	   hw.vtscsi.X.debug_level

     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.

SEE ALSO
     virtio(4)

HISTORY
     The virtio_scsi driver was	written	by Bryan Venteicher
     <bryanv@FreeBSD.org>.  It first appeared in FreeBSD 10.0.

FreeBSD	10.1			 June 24, 2012			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | LOADER TUNABLES | DEBUGGING | SEE ALSO | HISTORY

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