Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2011-03-29
2011-03-29
McCarthy, Christopher S (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S052000, C714S043000, C714S758000
Reexamination Certificate
active
07917813
ABSTRACT:
A computer program product, apparatus, and method for providing exception condition feedback at a control unit to a channel subsystem in an I/O processing system are provided. The computer program product includes a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method. The method includes receiving a command message at the control unit from the channel subsystem, and detecting an exception condition in response to unsuccessful execution of at least one command in the command message. The method further includes identifying a termination reason code associated with the exception condition, writing the termination reason code to a response message, and sending the response message to the channel subsystem.
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Carlson Scott M.
Casper Daniel F.
Flanagan John R.
Gainey Charles W.
Hathorn Roger G.
Campbell John
Cantor & Colburn LLP
International Business Machines - Corporation
McCarthy Christopher S
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