virtio_scsi4
Virtio scsi driver
Usage
device virtio_scsi
In loader.conf(5): hw.vtscsi.bus_reset_disable virtio_scsi_load="YES"
In loader.conf(5) or sysctl.conf(5): hw.vtscsi.%d.debug_level
Hardware
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.
Sysctl variables
The following variables can be entered at the loader(8) prompt, set in loader.conf(5), sysctl.conf(5), or changed at runtime with sysctl(8):
- hw.vtscsi.%d.debug_level
-
Enable debugging prints. The following bits have the described effects:
- 0x01
-
Enable informational prints.
- 0x02
-
Enable prints for driver errors.
- 0x04
-
Enable tracing prints.
Releases
33 releases since FreeBSD 8.4-RELEASE; the text changed 20 times.