International Business Machines Corporation

Peter Grimm Sutton

Harry M Yudenfriend

Kenneth J Oakes

Peter Dana Driever

Steven G Glassen

Peter Kenneth Szwed

David F Craddock

Elpida Tzortzatos

Dale Francis Riedy, Jr

Beth A Glendening

Matthew J Kalos

Matthias Klein

Anthony Thomas Sofia

Charles W Gainey, Jr

Thomas B Mathias

Scott B Tuttle

Scott Brady Compton

Robert O Dryfoos

Mark A Boonie

Dimitrios Pendarakis

Richard Harold Boivie

Phil C Yeh

Donna N Dillenberger

Kenneth Alan Goldman

John C Dayka

James Alan Ruddy

Robert Miller, Jr

Mohit Kapur

Charles E Mari

Wendell W Wilkinson

Shawfu Chen

Alfred F Foster

Mei-Hui Wang

Allan Feldman

Jason A Keenaghan

Alyson Comer

David Y Hu

Dan F Greiner

Jeffrey Mark Nick

Craig Raymond Walters

Jane Helen Bartik

Enriquillo Valdez

Anthony F Coneski

Jonathan D Bradbury

Roger Gregory Hathorn

John R Flanagan

Susan Kay Candelaria

John Glenn Thompson

David Harold Surman

Wayne Erwin Rhoten

Michael Gary Spiegel

Matthew J Mauriello

Mariama Ndoye

Christian Jacobi

Glen Alan Jaquette

Mark S Farrell

Beth Ann Peterson

Charles Franklin Webb

Richard Anthony Ripberger

William J Rooney

David Arlen Elko

Eric N Lais

Christopher J Colonna

Patricia G Driever

Erika Dawson

Dennis J Dahlen

Steven M Partlow

Richard Mark Sczepczenski

Harris M Morgenstern

George Kuch

Michael James Kelly

Brenton F Belmar

Thomas F Rankin

Ronald E Bretschneider

Walter W Otto

Robert A Blackburn

James B Cammarata

Duane C Hughes

Glenn W Sears, Jr

Nicolas Marc Clayton

John Richard Paveza

Bernd Nerz

Gavin Stuart Johnson

Matthew D Whitbourne

John S Trotter

Wayne Charles Carlson

Klaus Meissner

Jacob Lee Sheppard

Eberhard Engler

Jon Arthur Lynds

Gerard Maclean Dearing

Phil Chi-Chung Yeh

Richard Henry Guski

David Hom

Purvi Sharadchandra Patel

David Jon Lee

Keith N Langston

Andrew M Sica

Francis Gassert

Kenneth Michael Kapulka

A computer-implemented method for capturing system memory dumps includes receiving, by a diagnostic data component, an instruction to capture a system memory dump associated with a computer process being executed by a computing system comprising one or more processing units, the system memory dump comprising data from a plurality of memory locations associated with the computer process. In response to determining that the system memory dump satisfies a predetermined criterion, the diagnostic data component sends a request for a computing resource boost from the computing system. Further, in response to the request for the computing resource boost being granted, the diagnostic data component uses additional computing resources from the one or more processing units to store the data from the plurality of memory locations in the system memory dump and executing the backlogged operations that were halted due to the system memory dump capture.

Minimizing impact of first failure data capture on computing system using recovery process boost

Embodiments of dynamically increasing the resources for a partition to compensate for an input/output (I/O) recovery event are provided. An aspect includes allocating a first set of resources to a partition that is hosted on a data processing system. Another aspect includes operating the partition on the data processing system using the first set of resources. Another aspect includes, based on detection of an input/output (I/O) recovery event associated with operation of the partition, determining a compensation for the I/O recovery event. Another aspect includes allocating a second set of resources in addition to the first set of resources to the partition, the second set of resources corresponding to the compensation for the I/O recovery event. Another aspect includes operating the partition on the data processing system using the first set of resources and the second set of resources.

Increasing resources for partition to compensate for input/output (I/O) recovery event

An abstraction for storage class memory is provided that hides the details of the implementation of storage class memory from a program, and provides a standard channel programming interface for performing certain actions, such as controlling movement of data between main storage and storage class memory or managing storage class memory.

Configure storage class memory command

Embodiments include method, systems and computer program products for validating an event record. The method includes securing, by a processor, a log of one or more events being performed a computer by adding tamper detection to the log. Securing includes generating, by the processor, a first event record in response to an event being performed by the computer and generating, by the processor, a second event record in response to the first event record being generated. The second event record includes a first signature and a second signature corresponding to the first event record. The processor, in response to a request to detect tampering of the first event record, validates the first event record based on the first signature and the second signature in the second event record.

Using multiple signatures on a signed log

An embodiment of restricted command set management permits a storage controller to execute commands of a restricted command set if authorized. A command determined to be within the restricted command set is encrypted by a host prior to sending the encrypted command to a storage controller for execution. The command may be encrypted using a key shared between the host and the storage controller. The shared key may be generated by the host and encrypted by the host using a public key of a public-private key maintained by the storage controller. The encrypted shared key may be decrypted by the storage controller using the private key of the public-private key maintained by the storage controller. Execution of commands of the restricted command set is prevented absent proper decryption of the commands sent by the host. Other features and aspects may be realized, depending upon the particular application.

Restricted command set management in a data storage system

A method for accelerating transaction execution across geographically dispersed clusters is disclosed. In one embodiment, such a method includes receiving a request to read data in a data replication system comprising a primary storage system and a secondary storage system in a synchronous mirroring relationship with the primary storage system. The method determines whether at least one of the following conditions is true: (1) the secondary storage system is closer from a communication standpoint; and (2) a high speed communication technology is available to communicate with the secondary storage system that is not available to communicate with the primary storage system. In the event either of the conditions is true, the method directs the request to the secondary storage system. In the event neither of the conditions is true, the method directs the request to the primary storage system. A corresponding system and computer program product are also disclosed.

Accelerating transaction execution across geographically dispersed clusters

Provided are a computer program product, system, and method for managing access requests from a host to tracks in storage. A cursor is set to point to a track in a range of tracks established for sequential accesses. Cache resources are accessed for the cache for tracks in the range of tracks in advance of processing access requests to the range of tracks. Indication is received of a subset of tracks in the range of tracks for subsequent access transactions and a determination is made whether the cursor points to a track in the subset of tracks. The cursor is set to point to a track in the subset of tracks and cache resources are accessed for tracks in the subset of tracks for anticipation of access transactions to tracks in the subset of tracks.

Pre-allocating cache resources for a range of tracks in anticipation of access requests to the range of tracks

A method for suppressing data mirroring between a primary storage system and a secondary storage system is disclosed. In one embodiment, such a method includes defining a data class with an attribute designed to suppress mirroring of data from a primary storage system to a secondary storage system. The method assigns a data set to the data class, thereby causing the data set to inherit the attribute. In certain embodiments, assigning the data set to the data class includes recording the attribute in one or more of a volume-table-of-contents (VTOC) and a catalog used to reference the data set. The method automatically suppresses mirroring of the data set from the primary storage system to the secondary storage system in accordance with the assigned attribute. A corresponding system and computer program product are also disclosed.

Fine-grain asynchronous mirroring suppression

Identifying computer program execution characteristics for determine relevance of pattern instruction executions to determine characteristics of a computer program. Filters are utilized to determine which subsequent occurrences of execution of at least one computer instruction are relevant to a counter based on execution characteristics of the at least one computer instruction where the counter counts the subsequent occurrences of execution of at least one computer instruction following prior executions of the same at least one computer instruction.

Filtering based on instruction execution characteristics for assessing program performance

Authentication is performed on a plurality of links coupling one node of the computing environment and another node of the computing environment. The performing authentication includes obtaining by the one node a shared key from a key server coupled to the one node and another node of the computing environment. A message encrypted with the shared key is sent from the one node to the other node via one link of the plurality of links. An indication that the other node decrypted the message using the shared key obtained by the other node is received from the other node via the one link. The sending and the receiving are repeated on one or more other links of the plurality of links using the shared key previously obtained.

Securing a storage network using key server authentication

A computer system includes a plurality of hardware processors, and a hardware accelerator. A first processor among the plurality of processor runs an application that issues a data compression request to compress or decompress a data stream. The hardware accelerator selectively operates in different modes to compresses or decompresses the data stream. Based on a selected mode, the hardware accelerator can utilize a different number of processors among the plurality of hardware to compress or decompress the data stream.

Multi-mode compression acceleration

A system and related method provides within a data processing system (DPS), a first set of computing resources comprising a set of processor units that comprises a first core in an active state, and a second core that is initially in an inactive state. The processor allocates, for a partition that is hosted on the DPS, the first set of computing resources. The partition is operated using the first core before the second core has been activated. A resource manager determines whether to increase processing capacity based on an abnormal event. The processor then activates the second core from the inactive state to the active state. The partition is then operated using both the first and second (activated). In response to a predefined criterion, the second core is deactivated from the active state to the inactive state.

Increasing processing capacity of virtual machines for an abnormal event

An aspect includes hardware accelerator access. An application executing on a core of a multi-core processor triggers an interface code routine to acquire ownership of a hardware accelerator that is shared by a plurality of cores. The interface code routine partitions an input work package of the application into a plurality of pages in one or more input queues. The input work package is provided to the hardware accelerator in groups of one or more pages through the one or more input queues based on acquiring ownership of the hardware accelerator.

Virtualized and synchronous access to hardware accelerators

According to one or more embodiments of the present invention, a computer-implemented method includes allocating a set of computing resources to a first partition from a plurality of partitions in a computer server, and monitoring a usage duration of the set of computing resources by the first partition. The method further includes generating a billing statement based on the usage duration of the computing resources by the first partition. The method further includes detecting an abnormal event in operation of the first partition and adjusting one or more settings of the set of computing resources to increase processing capacity associated with the first partition to complete the abnormal event. The method further includes monitoring a first usage duration of the computing resources during completion of the abnormal event and adjusting the usage duration of based on the first usage duration, and adjusting the billing statement using the adjusted usage duration.

Increasing processing capacity of processor cores during initial program load processing

A computer-implemented method, according to one approach, includes: receiving a first request to perform a write operation from a host, and performing the write operation. Metadata corresponding to the first request is sent to the secondary data storage device, and metadata corresponding to a second request to perform the write operation is received from the secondary data storage device, where the second request was received at the secondary data storage device from the host. The metadata corresponding to the first and second requests is used to determine whether the write operation has been mirrored across the primary and secondary data storage devices. In response to determining that the write operation has been mirrored across the primary and secondary data storage devices, a response is sent to the secondary data storage device which indicates that the write operation has been reconciled across the primary and secondary data storage devices.

Mirroring write operations across data storage devices

Growing community of inventors

Lagrangeville, NY, United States of America

Peter Grimm Sutton