Subscribe to this informationLog entries
Logging is a function of Licensed Internal Code and starts during Licensed Internal Code initialization.
Logging is a function of Licensed Internal Code and starts during Licensed Internal Code initialization. Licensed Internal Code parts (see Licensed Internal Code) send log records to the product activity log. Licensed Internal Code input/output managers do much of the error machine check controlling.
The IOPs also have the ability to send data into the product activity log. Log records from the IOPs are processed by the Reliability Availability Serviceability (RAS) Focal Point Common Class I/O Manager Task in Licensed Internal Code. The following are the types of log entries from the IOP:
Asynchronous log report
This is a bus-level record that is used when the I/O processor has detected a critical failure. The asynchronous log report is used when the IOP cannot communicate with Licensed Internal Code or the service processor.
Log notification record
This is a log record that is reported to the system from the IOP after the RAS connections have been set up.
Log information record
This is an information-only record that is reported to the system after the RAS connections have been set up. The information records (statistics) are logged as product activity log information.
- Permanent errors that do not stop the system
- Machine check data when available on the next IPL (if power was not switched off before doing the next IPL)
- Any temporary errors necessary for problem analysis
- Data in multiple formats
- RAS error information and bus level asynchronous log report
- Device driver reported records
- Some dumps and trace data
- Volume information (statistics) data records
A formatted printout of the product activity log records is available by using the Product activity log option from the Start a Service Tool display under dedicated service tools (DST).
