| scsi.4 (117011) | scsi.4 (131026) |
|---|---|
| 1.\" Copyright (c) 1996 2.\" Julian Elischer <julian@FreeBSD.org>. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 9 unchanged lines hidden (view full) --- 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" | 1.\" Copyright (c) 1996 2.\" Julian Elischer <julian@FreeBSD.org>. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 9 unchanged lines hidden (view full) --- 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" |
| 26.\" $FreeBSD: head/share/man/man4/scsi.4 117011 2003-06-28 23:53:39Z ru $ | 26.\" $FreeBSD: head/share/man/man4/scsi.4 131026 2004-06-24 04:05:08Z scottl $ |
| 27.Dd October 15, 1998 28.Dt SCSI 4 29.Os 30.Sh NAME 31.Nm SCSI , 32.Nm CAM 33.Nd CAM SCSI subsystem 34.Sh SYNOPSIS --- 119 unchanged lines hidden (view full) --- 154will suffice for any number of disk drivers. 155.Pp 156The devices are either 157.Em wired 158so they appear as a particular device unit or 159.Em counted 160so that they appear as the next available unused unit. 161.Pp | 27.Dd October 15, 1998 28.Dt SCSI 4 29.Os 30.Sh NAME 31.Nm SCSI , 32.Nm CAM 33.Nd CAM SCSI subsystem 34.Sh SYNOPSIS --- 119 unchanged lines hidden (view full) --- 154will suffice for any number of disk drivers. 155.Pp 156The devices are either 157.Em wired 158so they appear as a particular device unit or 159.Em counted 160so that they appear as the next available unused unit. 161.Pp |
| 162To configure a driver in the kernel without wiring down the device use a 163config line similar to 164.Cd "device ch0" 165to include the changer driver. | 162Units are wired down by setting kernel environment hints. 163This is usually done either interactively from the loader, or automatically via the 164.Pa /boot/device.hints 165file. The basic syntax is: 166.Bd -literal -offset indent 167hint.device.unit.property="value" 168.Ed |
| 166.Pp | 169.Pp |
| 167To wire down a unit use a config line similar to 168.Cd "device ch1 at scbus0 target 4 unit 0" 169to assign changer 1 as the changer with SCSI ID 4, 170SCSI logical unit 0 on SCSI bus 0. 171Individual scbuses can be wired down to specific controllers with 172a config line similar to 173.Cd "device scbus0 at ahc0" 174which assigns scsi bus 0 to the first unit using the ahc driver. 175For controllers supporting more than one bus, 176the particular bus can be specified as in 177.Cd "device scbus3 at ahc1 bus 1" 178which assigns scbus 1 to the second bus probed on the ahc1 device. | 170Individual scsi bus numbers can be wired down to specific controllers with 171a config line similar to the following: 172.Bd -literal -offset indent 173hint.scbus.0.at="ahd1" 174.Ed |
| 179.Pp | 175.Pp |
| 176This assigns scsi bus number 0 to the 177.Em ahd1 178driver instance. 179For controllers supporting more than one bus, a particular bus can be assigned 180as follows: 181.Bd -literal -offset indent 182hint.scbus.0.at="ahc1" 183hint.scbus.0.bus="1" 184.Ed 185.Pp 186This assigns scsi bus 0 to the bus 1 instance on 187.Em ahc0 . 188Peripheral drivers can be wired to a specific bus, target, and lun as so: 189.Bd -literal -offset indent 190hint.da.0.at="scbus0" 191hint.da.0.target="0" 192hint.da.0.unit="0" 193.Ed 194.Pp 195This assigns 196.Em da0 197to target 0, unit (lun) 0 of scbus 0. 198Omitting the target or unit hints will instruct CAM to treat them as wildcards 199and use the first respective counted instances. 200These examples can be combined together to allow a peripheral device to be 201wired to any particular controller, bus, target, and/or unit instance. 202.Pp |
|
| 180When you have a mixture of wired down and counted devices then the 181counting begins with the first non-wired down unit for a particular 182type. 183That is, if you have a disk wired down as 184.Em "device da1" , 185then the first non-wired disk shall come on line as 186.Em da2 . 187.Sh ADAPTERS --- 116 unchanged lines hidden --- | 203When you have a mixture of wired down and counted devices then the 204counting begins with the first non-wired down unit for a particular 205type. 206That is, if you have a disk wired down as 207.Em "device da1" , 208then the first non-wired disk shall come on line as 209.Em da2 . 210.Sh ADAPTERS --- 116 unchanged lines hidden --- |