Max R Smith

US Patent:

8443228, May 14, 2013

Filed:

Jun 29, 2011

Appl. No.:

13/171992

Inventors:

Douglas Lee Lehr - Austin TX, US
Franklin Emmert McCune - Tucson AZ, US
David Charles Reed - Tucson AZ, US
Max Douglas Smith - Tucson AZ, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 11/00

US Classification:

714 412, 714 11

Abstract:

A central hub is coupled to a plurality of computational devices. The central hub stores a data structure that grants locks for accessing common data stored at the central hub, wherein the common data is shared by the plurality of computational devices. Each computational device maintains locally those locks that are held by the computational device in the data structure stored at the central hub. In response to a failure of the data structure stored at the central hub, a selected computational device of the plurality of computational devices is determined to be a manager system. Other computational devices besides the manager system communicate to the manager system all locks held by the other computational devices in the data structure stored at the central hub. The data structure and the common data are generated and stored at the manager system. Transactions are performed with respect to the data structure stored at the manager system, until the data structure stored at the central hub is operational.

US Patent:

8495029, Jul 23, 2013

Filed:

Apr 17, 2012

Appl. No.:

13/448979

Inventors:

Douglas Lee Lehr - Austin TX, US
Franklin Emmert McCune - Tucson AZ, US
David Charles Reed - Tucson AZ, US
Max Douglas Smith - Tucson AZ, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 7/00
G06F 17/00

US Classification:

707687, 707781, 707812

Abstract:

A plurality of catalogs are maintained, and wherein each catalog of the plurality of catalogs includes data sets and attributes of the data sets. An indication that a new data set is to be defined is received. A selected catalog is determined from the plurality of catalogs, wherein the selected catalog is suitable for including the new data set and attributes of the new data set. An entry that indicates a data set name corresponding to the new data set and an index to the selected catalog is inserted in a group table.

US Patent:

8516009, Aug 20, 2013

Filed:

Jun 26, 2012

Appl. No.:

13/533650

Inventors:

Douglas Lee Lehr - Austin TX, US
Franklin Emmert McCune - Tucson AZ, US
David Charles Reed - Tucson AZ, US
Max Douglas Smith - Tucson AZ, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 17/30

US Classification:

707802

Abstract:

A data structure maintained in a computational device stores how many control areas splits have occurred to store a data set, wherein each control area split causes an addition of a single new control area. A command is received to add a new data record to the data set. A determination is made as to whether adding the new data record to the data set will result in a threshold for control area splits to be exceeded. In response to determining that adding the new data record to the data set will result in the threshold for control area splits to be exceeded, creating at least two new control areas in addition to continuing to use one existing control area for storing the data set.

US Patent:

8516010, Aug 20, 2013

Filed:

Jun 26, 2012

Appl. No.:

13/533672

Inventors:

Douglas Lee Lehr - Austin TX, US
Franklin Emmert McCune - Tucson AZ, US
David Charles Reed - Tucson AZ, US
Max Douglas Smith - Tucson AZ, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 17/30

US Classification:

707802

Abstract:

A data structure maintained in a computational device stores how many control areas splits have occurred to store a data set, wherein each control area split causes an addition of a single new control area. A command is received to add a new data record to the data set. A determination is made as to whether adding the new data record to the data set will result in a threshold for control area splits to be exceeded. In response to determining that adding the new data record to the data set will result in the threshold for control area splits to be exceeded, creating at least two new control areas in addition to continuing to use one existing control area for storing the data set.

US Patent:

8527551, Sep 3, 2013

Filed:

Jun 26, 2012

Appl. No.:

13/533641

Inventors:

Douglas Lee Lehr - Austin TX, US
Franklin Emmert McCune - Tucson AZ, US
David Charles Reed - Tucson AZ, US
Max Douglas Smith - Tucson AZ, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 17/30

US Classification:

707802

Abstract:

A data structure maintained in a computational device stores how many control areas splits have occurred to store a data set, wherein each control area split causes an addition of a single new control area. A command is received to add a new data record to the data set. A determination is made as to whether adding the new data record to the data set will result in a threshold for control area splits to be exceeded. In response to determining that adding the new data record to the data set will result in the threshold for control area splits to be exceeded, creating at least two new control areas in addition to continuing to use one existing control area for storing the data set.

US Patent:

20120284474, Nov 8, 2012

Filed:

May 6, 2011

Appl. No.:

13/102882

Inventors:

DOUGLAS L. LEHR - AUSTIN TX, US
FRANKLIN E. McCUNE - TUCSON AZ, US
DAVID C. REED - TUCSON AZ, US
MAX D. SMITH - TUCSON AZ, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - ARMONK NY

International Classification:

G06F 12/02

US Classification:

711165, 711E12002

Abstract:

In defragmentation of data of a data storage system, the data storage system having at least one storage control and data storage, allowing defragmentation of data with respect to the data storage, the defragmentation comprising analysis and data movement. During the defragmentation and before completion of the defragmentation, in response to the data movement reaching a stable state, further defragmentation analysis and data movement is interrupted; making a point-in-time copy of the data subject to the defragmentation; and resuming the defragmentation analysis and data movement. At a further stable state where a new point-in-time copy is made, an earlier point-in-time copy is withdrawn. Should the defragmentation process end prematurely, a backup of the data subject to defragmentation may be recovered from a most recent point-in-time copy.

US Patent:

20130007397, Jan 3, 2013

Filed:

Jun 28, 2011

Appl. No.:

13/171378

Inventors:

Douglas L. Lehr - Austin TX, US
Franklin E. McCune - Tucson AZ, US
David C. Reed - Tucson AZ, US
Max D. Smith - Tucson AZ, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

International Classification:

G06F 12/00
G06F 12/02

US Classification:

711165, 711E12002

Abstract:

A method for addressing an out-of-space condition for a VSAM Volume Data Set (VVDS) includes detecting an out-of-space condition in a VVDS on a volume. The method creates, in response to the out-of-space condition, a new VVDS on the volume without adding a record to the old VVDS (e.g., by bypassing “catalog services”). The new VVDS is assigned a temporary name. The method then copies records from the old VVDS to the new VVDS. The method may then rename the old VVDS to a temporary name and rename the new VVDS to the original name of the old VVDS. The old VVDS may then be deleted. Alternatively, instead of renaming the old VVDS to a temporary name, the old VVDS may be deleted. The new VVDS may then be renamed to the original name of the old VVDS. A corresponding apparatus and computer program product are also described.

US Patent:

20130019070, Jan 17, 2013

Filed:

Jul 12, 2011

Appl. No.:

13/181383

Inventors:

Douglas L. Lehr - Austin TX, US
Franklin E. McCune - Tucson AZ, US
David C. Reed - Tucson AZ, US
Max D. Smith - Tucson AZ, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

International Classification:

G06F 12/00

US Classification:

711154, 711E12001

Abstract:

A detection module selects logically adjacent first and second control areas of a cluster. The detection module further determines that the first and second control areas satisfy a migration test wherein the first control area has free space exceeding a free threshold, the free space is at least equal to a space requirement for each second control area control interval, and the second control area has fewer control intervals than a control interval threshold. In addition, a copy module copies each second control area control interval to the first control area in response to determining that the first and second control areas satisfy the migration test.