KZPCM
6.3Setting the Host Adapter SCSI ID (UNIX)
By default the Host Adapter target ID is set to 7. The ID can be changed using the following procedures.
6.3.1 Setting the Host Adapter ID at the System Console
At the SRM console (indicated by a >>> or P0>>> prompt at the system’s console) storage controllers are identified by the port class prefix PK. The command >>>show dev pk displays all known disk adapters. When you have identified the location of the adapter whose ID you wish to change, issue the following command:
>>>set pkb0_host_id 6
(this example changes the PKB host adapter ID to 6 from the default of 7.)
Verify the change with:
>>>show pkb0_host_id
Be certain you do not pick an ID that conflicts with other devices on the bus.
6.3.2 Setting the Adapter ID Under the UNIX Operating System
After you have changed the adapter SCSI ID at the SRM console, you must change the UNIX SCSI ID for the adapter. Boot UNIX and follow this procedure.
1.Login as root.
2.Run the itsetid.sh utility to change an adapter ID. The syntax of the itsetid.sh command is:
#/usr/opt/ITPSA100/conf/itsetid.sh ADAPTER_NUMBER ID
where ADAPTER_NUMBER is the adapter’s SCSI bus number and the ID is the desired SCSI host ID for the adapter. Consult the system startup messages to determine an adapter’s SCSI bus number. Valid SCSI target IDs are from 0 to 7.
Note that itsetid.sh should be run once for each adapter ID that is to be changed.
3.Run the doconfig command to build a new kernel. In the example that follows $SYSCFGNAME is the name of your computer system configuration file. This filename is usually the system host name written in capital letters.
#cd /sys/conf
#doconfig –c $SYSCFGNAME
(answer n to the question about editing the configuration file)
