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Fault Detection

Initialization-system-for-input-output-processing-units

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Initialization system for input/output processing units

Details

Inventors: Fujioka, Shuntaro;
Assignee: Fujitsu Limited (Kawasaki, JP)
Primary Examiner: Baker; Stephen M.
Assistant Examiner:
Attorney, Agent or Firm: Staas & Halsey

A computer system includes a central processing unit, a computer maintenance unit and an input/output processing section having a plurality of input/output processing units each of which is associated with a respective input/output device. When a failure occurs in an input/output processing unit, the input/output processing unit control section detects the occurrence of a failure, reports it to the central processing unit and requests the computer maintenance unit to acquire failure information from a failed input/output processing unit and to initialize the input/output processing unit. After acquisition of the failure information, the computer maintenance unit initializes the failed input/output processing unit and reports the termination of the initialization to the input/output processing unit control section. Afterward, the input/output processing unit control section informs the central processing unit of the termination of the initialization of the failed input/output processing unit.

DETAILED DESCRIPTION It is therefore an object of the present invention to acquire correct failure information by positively initializing an input/output processing unit after the acquisition of failure information.
A feature of the present invention resides in a computer system including a central processing unit, a computer maintenance unit and an input/output processing section having a plurality of input/output processing units each of which is associated with a respective input/output device, a method of initializing said input/output processing units comprising the steps of causing, when a failure occurs in an input/output processing unit in said input/output processing section, said input/output processing section to make a request to said computer maintenance unit to acquire failure information and initialize said failing input/output processing unit, causing said computer maintenance unit to initialize said failing input/output processing unit after the acquisition of the failure information, and causing said input/output processing section to report to said central processing unit the termination of initialization of said failing input/output processing unit.

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