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This selection restores all of the settings for the hardware management policies from
the contents of the /etc/lpp/diagnostics/data/hmpolicies file:
You can access this service aid directly from the AIX command line by entering:
/usr/lpp/diagnostics/bin/uspchrp -a
SCSI BUS Analyzer
This service aid enables you to diagnose a SCSI Bus problem in a free-lance mode.
To use this service aid, the user should understand how a SCSI bus works. Use this
service aid when the diagnostics cannot communicate with anything on the SCSI bus
and cannot isolate the problem. Normally the procedure for finding a problem on the
SCSI bus with this service aid is to start with a single device attached, ensure that it is
working, then start adding additional devices and cables to the bus, ensuring that each
one works. This service aid works with any valid SCSI bus configuration.
The SCSI Bus Analyzer Service Aid transmits a SCSI Inquiry command to a selectable
SCSI Address. The service aid then waits for a response. If no response is received
within a defined amount of time, the service aid displays a timeout message. If an error
occurs or a response is received, the service aid then displays one of the following
messages:
v The exerciser transmitted a SCSI Inquiry command and received a valid
response back without any errors being detected.
v The exerciser transmitted a SCSI Inquiry command and did not receive any
response or error status back. Check that the address is valid, then retry.
v The exerciser transmitted a SCSI Inquiry command and the adapter indicated a
SCSI bus error.
v The exerciser transmitted a SCSI Inquiry command and an adapter error
occurred.
v The exerciser transmitted a SCSI Inquiry command and an unrecoverable I/O
error occurred.
When the SCSI Bus Service Aid is started, a description of the service aid displays.
Press the Enter key to display the Adapter Selection menu. Use this menu to enter
which address to transmit the SCSI Inquiry Command.
When the adapter is selected, the SCSI Bus Address Selection menu displays. Use this
menu to enter which address to transmit the SCSI Inquiry Command.
After the address is selected, the SCSI Bus Test Run menu displays. Use this menu to
transmit the SCSI Inquiry Command by pressing the Enter key. The service aid then
indicates the status of the transmission. When the transmission is completed, the
results of the transmission display.
Notes:
1. A Check Condition can be returned when the bus or device is working properly.
Chapter 6. Introducing Tasks and Service Aids
133
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