Device-Independent IOP Maintenance Package Control Flow for Iop-Detected Device Failures
Original Publication Date: 1988-May-01
Included in the Prior Art Database: 2005-Feb-15
By defining device pseudo-System Reference Codes (SRCs) for each device failure syndrome that can be detected by an I/O Processor (IOP) and using the data associated with those SRCs as entry points into the appropriate device's maintenance package when such failures occur, an IOP maintenance package can be made device-independent. This concept can also be used for system/IOP maintenance package control flow. The IBM 9370 system supports the surfacing of system problems via error logs. Each error log contains one or more SRCs. When analyzed, these codes cause Problem Source Identification (PSI) procedures to be invoked which are used to isolate the source of the problem. In certain cases, error logs containing only an IOP SRC will be surfaced when in actuality, a device FRU is failing.