IBM RS/6000 44P manual Running the Online Diagnostics in Concurrent Mode, Maintenance Mode

Error-log analysis is done in concurrent mode when you select theProblem

Determination option on the DIAGNOSTIC MODE SELECTION menu.

To run the Online diagnostics in concurrent mode, you must be logged in to the AIX operating system and have the appropriate proper authority to issue the commands.

The diag command loads the diagnostic controller and displays the Online diagnostic menus.

Running the Online Diagnostics in Concurrent Mode

To run Online diagnostics in concurrent mode, use the following steps:

1.Log in to the AIX operating system as root user.

2.Enter the diag command.

3.When the DIAGNOSTIC OPERATING INSTRUCTIONS displays, follow the instructions to check out the desired resources.

4.When testing is complete, use the F3 key to return to the DIAGNOSTIC OPERATING INSTRUCTIONS. Then press the F3 key again to return to the AIX operating system prompt. Be sure to vary on any resource you had varied to off.

5.Press the Ctrl-D key sequence to log off from root user.

Maintenance Mode

Maintenance mode runs the Online diagnostics using the customer's version of the AIX operating system. This mode requires that all activity on the AIX operating system be stopped so the Online diagnostics have most of the resources available to check. All of the system resources except the SCSI adapters, memory, processor, and the disk drive used for paging can be checked.

Error-log analysis is done in maintenance mode when you select the Problem

Determination option on the DIAGNOSTIC MODE SELECTION menu.

The shutdown -mcommand is used to stop all activity on the AIX operating system and put the AIX operating system into maintenance mode. The diag command is used to invoke the diagnostic controller so you can run the diagnostics. After the diagnostic controller is then loaded, follow the normal diagnostic instructions.

Running the Online Diagnostics in Maintenance Mode

To run the Online diagnostics in maintenance mode, you must be logged in to the customer's version of the AIX operating system as root user and use the shutdown -mand diag commands. Use the following steps to run the Online diagnostics in maintenance mode:

1.Stop all programs except the AIX operating system.

2.Log in to the AIX operating system as root user.

3.Enter the shutdown -mcommand.

4.When a message indicates system is in single-user mode, enter the diag command.

Note: It may be necessary to set TERM type again.

Chapter 5. Using the Standalone and Online Diagnostics 111