07840718 is referenced by 45 patents and cites 125 patents.

A computer program product, an apparatus, and a method for processing communications between a control unit and a channel subsystem in an input/output 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: sending a Process Log-out (PRLO) message from the control unit to the channel subsystem, the message requesting suspension of input/output operations between the control unit and the channel subsystem for a period of time, the period of time being defined by the PRLO message; responsive to the PRLO message, suspending by the channel all input/output operation messages for the period of time, wherein suspending comprises stopping input/output operation messages during the period of time; and responsive to an expiration of the period of time, sending a Process Log-in (PRLI) message from the channel subsystem to the control unit to re-initiate an operating environment between the channel subsystem and the control unit.

Title
Processing of data to suspend operations in an input/output processing log-out system
Application Number
12/31021
Publication Number
7840718 (B2)
Application Date
February 14, 2008
Publication Date
November 23, 2010
Inventor
Harry M Yudenfriend
Poughkeepsie
NY, US
Gustav E Sittmann
Webster Groves
MO, US
Matthew J Kalos
Tucson
AZ, US
Catherine C Huang
Poughkeepsie
NY, US
Roger G Hathorn
Tucson
AZ, US
John R Flanagan
Poughkeepsie
NY, US
Daniel F Casper
Poughkeepsie
NY, US
Scott M Carlson
Tucson
AZ, US
Mark P Bendyk
Hyde Park
NY, US
Louis W Ricci
Hyde Park
NY, US
Agent
John Campbell
Cantor Colburn
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 3/00
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