International Business Machines Corporation

Michelle Parks Dais, Legal Representative

Matthew J Kalos

Harry M Yudenfriend

Peter Grimm Sutton

Richard Anthony Ripberger

John Glenn Thompson

Wayne Erwin Rhoten

Ronald E Bretschneider

Lyle LeRoy Merithew, Jr

William Stuart Edwards

James B Cammarata

Marc Kenneth Duquette

Ruth Leslie Ferziger

Peter Verl Gibson

Josephine M Edwards, Legal Representative

The invention provides an apparatus, system, and method for cluster-wide peer recovery in the event of a computer failure. A failure of a first computer is detected and a recovery module is registered as the first computer. In one embodiment, the recovery module is a peer computer. The recovery module retrieves a privately held undo log data through the authorized assumption of the failure identity associated with the failed first computer, backs out in-flight transaction updates of the first computer, and frees up data resources locked by the first computer.

Apparatus, system, and method for transactional peer recovery in a data sharing clustering computer system

Provided is a method, system, and article of manufacture for providing an address format compatible with different addressing formats used for addressing different sized address spaces. An address format is used in an operating system to address storage space in a storage device comprising a first region and a second region of storage space. A first group of applications uses the address format to only address the storage space in the first region and is not coded to use the address format to access the second region and a second group of applications uses the address format to address the storage space in the first and second regions.

Method for providing an address format compatible with different addressing formats used for addressing different sized address spaces

Growing community of inventors

Santa Cruz, CA, United States of America

Michelle Parks Dais, Legal Representative