08166206 cites 179 patents.

The state of an input/output (I/O) operation is determined in an I/O processing system. A command is received from an I/O operating system at a channel subsystem for initiating the I/O operation, a time period is for completion of the I/O operation, and the command for initiating the I/O operation is sent from the channel subsystem to the control unit. Responsive to the time period nearing elapsing without the I/O operation completing, a cancel instruction is received from the I/O operating system at the channel subsystem. Responsive to a determination by the I/O operating system to interrogate the control unit, an instruction to interrogate the control unit is received with the cancel instruction from the I/O operating system.

Title
Cancel instruction and command for determining the state of an I/O operation
Application Number
12/30993
Publication Number
8166206 (B2)
Application Date
February 14, 2008
Publication Date
April 24, 2012
Inventor
Scott M Carlson
Tucson
AZ, US
Catherine C Huang
Poughkeepsie
NY, US
Ugochukwu C Njoku
Yonkers
NY, US
Gustav E Sittmann
Tucson
AZ, US
Roger G Hathorn
Tucson
AZ, US
Louis W Ricci
Hyde Park
NY, US
Dale F Riedy
Poughkeepsie
NY, US
Matthew J Kalos
Tucson
AZ, US
John R Flanagan
Poughkeepsie
NY, US
Daniel F Casper
Poughkeepsie
NY, US
Harry M Yudenfriend
Poughkeepsie
NY, US
Agent
Steven Chiu
Cantor Colburn
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 3/00
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