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Functional Diskette 1 Logouts
Four basic types of processor-dependent error logouts are written to the 4381
Processor functional diskette 1: support processor, instruction processing function,
reference code history, and power. Power logouts are discussed under "Power
System" in this subsection. The support processor logouts consist of one support
processor summary record and up to eight support processor detail records. The
summary record contains summary data about the existing detail records, which
contain status data about the support processor and its adapters for the last nine
support processor errors.
The instruction processing function logouts consist of one processing unit summary
record, one processing unit directory record, and two status (checks-in-system and
scan rings) log records for each logout (up to nine) listed in the directory record.
For the 4381 Model Group 14 or 3, up to nine logouts are saved for each
instruction processing function.
The processing unit directory record identifies the processor-dependent logout data
currently recorded on functional diskette 1. Logout data for the last three
correctable errors and the last uncorrectable error is maintained in the status log
records. The processing unit directory record contains the following for each
logout: the logout identification number of the log, the reference code, the date
and time of the error, and the error type (recoverable or nonrecoverable).
The checks-in-system and scan-rings-log records for a given error contain detailed
processor-dependent information about the status of the processor at the time of
the failure and the logout identification number of the error.
The reference code history record contains the last 31 reference codes generated
by the support processor and each is time stamped.
The IBM customer engineer can display the contents of each type of support
processor and instruction processing function log record and the reference code
history record on the display console using the general selection display when CE
mode is in effect. The IBM customer engineer can also print the contents of log
records on a natively attached 3287 or 3268 Printer (via the copy key) and purge
log records using the console. If a 3287 or 3268 Printer is not installed, log records
can be printed on a channel-attached printer by configuring the copy key for the
channel-attached printer.
Section 60: Reliability, Availability, and Serviceability (RAS)
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