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AssigneeInternational Business Machines Corporation
InventorsJames Fields, Michael Floyd, Benjiman Goodman, Paul Lecocq, Praveen Reddy
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A method, apparatus, and computer instructions are provided by the present invention to automatically recover from a failed node concurrent maintenance operation. A control logic is provided to send a first test command to processors of a new node. If the first test command is successful, a second test command is sent to all processors or to the remaining nodes if nodes are removed. If the second command is successful, system operation is resumed with the newly configured topology with either nodes added or removed. If the response is incorrect or a timeout has occurred, the control logic restores values to the current mode register and sends a third test command to check for an error. A fatal system attention is sent to a service processor or system software if an error is encountered. If no error, system operation is resumed with previously configured topology.
A method in a data processing system for automatic recovery from a failed node concurrent maintenance add operation, the method comprising:
A method in a data processing system for automatic recovery from a failed node concurrent maintenance remove operation, the method comprising:
A data processing system for automatic recovery from a failed node concurrent maintenance operation, the data processing system comprising:
Dependencies are inferred from the claim text.