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.

Debian                                            June 24, 2012                                   VIRTIO_SCSI(4)