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v The sub-test level tests a portion of a resource while the remaining part of the
resource is being used in normal operation. For example, this test could test one port
of a multiport device while the other ports are being used in normal operation.
v The full-test level requires the device not be assigned to or used by any other
operation. This level of testing on a disk drive might require the use of the varyoff
command. The diagnostics display menus to allow you to vary off the needed
resource.
Error log analysis is done in concurrent mode when you select the Problem
Determination option on the DIAGNOSTIC MODE SELECTION menu.
To run the Online diagnostics in concurrent mode you must be logged onto the AIX
operating system and have proper authority to issue the commands (if needed, get
help).
The diag command loads the diagnostic controller and displays the Online diagnostic
menus.
To run Online diagnostics in concurrent mode, use the following steps:
v Log on to the AIX operating system as root or use CE login.
v Enter the diag command.
v When the DIAGNOSTIC OPERATING INSTRUCTIONS display, follow the
instructions to test the desired resources.
v When testing is complete, use the F3 key to return to the DIAGNOSTIC OPERATING
INSTRUCTIONS. Press the F3 key again to return to the operating system prompt.
Be sure to vary on any resource you had varied to off.
v Press the Ctrl-D key sequence to log off from root or superuser.
Running the Online Diagnostics in 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 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 -m command is used to stop all activity on the AIX operating system
and put the operating system into maintenance mode. The diag command is then used
to invoke the diagnostic controller so you can run the diagnostics. After the diagnostic
controller is loaded, follow the normal diagnostic instructions.
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 or superuser and use the
shutdown -m and diag commands. Use the following steps to run the Online
diagnostics in maintenance mode:
Chapter 5. Using the Standalone and Online Diagnostics
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