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Configuring Robotic Controls

3. Use the following commands to create the device file for the SCSI robotic control:

mkdir /dev/spt

mknod /dev/spt/

Name

Major

IITL

Where:

◆ Name is the device name as defined in the format:

cCONTROLLERtTARGETlUNIT

◆ Major is the character major number (from the lsdev command).

◆ II is two hexadecimal digits identifying the controlling bus interface card by its

Instance number.

◆ T is one hexadecimal digit representing the SCSI ID of robotic control.

◆ L is one hexadecimal digit representing the SCSI LUN of the robotic control.

Example of Creating a Device File

If the robotic control for an HP Optical Disk Library (ODL) is on a secondary SCSI bus at

SCSI ID 3, LUN 0, use the following steps to create the device file.

1. Use the ioscan -f command to get information on the SCSI bus and the robotic

control.

Class I H/W Path Driver S/W State H/W Type Description

===============================================================

bc 0 root CLAIMED BUS_NEXUS

bc 1 56 bc CLAIMED BUS_NEXUS Bus Converter

ext_bus 1 56/16 scsi1 CLAIMED INTERFACE HP 28655A - SCSI

Interface

target 4 56/16.3 target CLAIMED DEVICE

spt 0 56/16.3.0 spt CLAIMED DEVICE HP C1700T

The Instance number for the robot’s SCSI bus is 1. It also confirms that the spt driver is

attached to the optical robotic control at H/W Path 56/16.3.0.

2. Use lsdev to get the character major number for the spt driver.

lsdev -d spt

The output from this command shows that the character major number for the spt

driver is 137.

Character Block Driver Class

137 -1 spt spt

3. Create the /dev/spt directory, if it has not already been created.

mkdir /dev/spt

Chapter 4, Hewlett-Packard HP-UX 61

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Seagate ST11200N Technical Information Seite 75