International Business Machines Corporation

Ruth A Allen

Jeffrey Mark Nick

David Harold Surman

Kelly B Pushong

Mark A Brooks

David Arlen Elko

Michael J Jordan

Michael D Swanson

Georgette L Kurdt

Dennis J Dahlen

Douglas W Westcott

Lisa M Goetze

James C Kleewein

Wendell W Wilkinson

Catherine Mary Moxey

Jaime F Anaya

Ronald Elliott Parrish

William Charles Neiman

Steven Bruce Jones

Joseph S Insalaco

Roger L Brockmeyer

Michael Burrill Phillips

Roger L Brookmeyer

System-managed duplexing of coupling facility structures. A plurality of instances of coupling facility structures are maintained in a plurality of coupling facilities. Duplexing processing associated with the plurality of instances is managed by one or more operating systems, making many of the steps associated with duplexing transparent to the exploiters of the coupling facility structures. System-managed duplexing provides high availability for coupling facility structure data via a robust recovery mechanism (i.e., duplexing failover).

Monitoring processing modes of coupling facility structures

Managing processing associated with coupling facility Structures

Managing connections to coupling facility structures

System-managed duplexing of coupling facility structures

Storage structures of a shared storage processor of a computing environment are copied. A copy operation for a storage structure of the shared storage processor is initiated. Although the storage structure is owned by an exploiter of the storage structure, at least a portion of the contents of the storage structure is copied via an operating system of the computing environment. The at least a portion of the contents are copied from the storage structure to another storage structure of the computing environment. Both storage structures may be located within the same shared storage processor or within different shared storage processors.

Method, system and program products for copying coupling facility structures

Cache structures of a shared storage processor of a computing environment are copied. A copy operation for a cache structure of the shared storage processor is initiated. Although the cache structure is owned by an exploiter of the cache structure, one or more objects of the cache structure are copied via an operating system of the computing environment. The one or more objects are copied from the cache structure to another cache structure of the computing environment. Both cache structures may be located within the same shared storage processor or within different shared storage processors.

Method, system and program products for copying coupling facility cache structures

Lock structures of a shared storage processor of a computing environment are copied. A copy operation for a lock structure of the shared storage processor is initiated. Although the lock structure is owned by an exploiter of the lock structure, one or more objects of the lock structure are copied via an operating system of the computing environment. The one or more objects are copied from the lock structure to another lock structure of the computing environment. Both lock structures may be located within the same shared storage processor or within different shared storage processors.

Method, system and program products for copying coupling facility lock structures

List structures of a shared storage processor of a computing environment are copied. A copy operation for a list structure of the shared storage processor is initiated. Although the list structure is owned by an exploiter of the list structure, one or more objects of the list structure are copied via an operating system of the computing environment. The one or more objects are copied from the list structure to another list structure of the computing environment. Both list structures may be located within the same shared storage processor or within different shared storage processors.

Method, system and program products for copying coupling facility list structures

Rebuilding of storage structures within a shared storage processor of a computing environment. A rebuild of a storage structure, which is owned by an exploiter of the storage structure, is initiated. Thereafter, the storage structure is rebuilt via an operating system of the computing environment. The operating system is distinct from the exploiter owning the storage structure and lacks knowledge of the contents of the storage structure.

System-managed rebuild of coupling facility structures

A method and system for managing one or more coupling facilities in a data processing system. An active policy is used to control resources located in the coupling facilities. The active policy can be changed such that control of the resources can be altered. Compatible changes are made immediately and incompatible changes are made at a subsequent time. Recorded in the active policy and in the coupling facilities is information regarding the resources. When the information in the active policy is not in synchronization with the information in the coupling facilities, a reconciliation technique is performed. The resources in the coupling facilities can be modified but prior to the modification, the intended modifications are stored in the active policy.

Method of managing resources in one or more coupling facilities coupled

A method for coordinating phases of program execution within a data processing system. One or more program defined synchronization events are established. Each synchronization event is responded to by one or more programs to coordinate phases of execution. The operating system notifies the one or more programs when all responses are received. A next program defined synchronization event may be established after a response is received for a previous synchronization event.

Method for coordinating executing programs in a data processing system

A method and system for rebuilding storage structures located within one or more structure processing facilities of a data processing system. A connection is made to a first storage structure having a name and one or more predefined characteristics. Thereafter, a second storage structure is allocated having the same name as the first structure, however, one or more of the predefined characteristics of the second structure are different than the predefined characteristics of the first structure. The second structure may be used for planned system reconfigurations or for recovery from system failures. During the rebuilding process, notification of phases of the rebuilding process are given to the active users. Further, a capability is provided for terminating the rebuilding process. In addition, a method and system for coordinating phases of user defined processing is provided.

Method and system for reconfiguring a storage structure within a

A method and system for managing information in a data processing system is provided. The data processing system includes one or more operating systems coupled to a coupling facility. Stored within the coupling facility is data, which is accessed by one or more users. The status of those users are also stored in the coupling facility. A number of operating system services are provided for recording the users' status and managing the data and the users of the data. The data may include cache, list and/or lock structures.

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Springfield, OR, United States of America

Ruth A Allen