International Business Machines Corporation

Tan Q Nguyen

John Richard Paveza

Gerard Maclean Dearing

Harry M Yudenfriend

Peter Grimm Sutton

Trinh Huy Nguyen

Andrew B Trinh

Tony Xu

Wilson Yang

Jwu-Shyan Tarng

Romell Williams

Source code routines are generated for storage management in a storage code development management tool. A script that includes the source code routines is generated. The storage code development management tool receives indications based on an execution of an object code generated via execution of the script. The storage code development management tool modifies the source code routines based on the received indications.

Source code development interface for storage management

A computer-implemented method according to one embodiment includes receiving a request to add a generic volume entry to a generic volume element list, storing the generic volume entry in the generic volume element list in a SMS configuration in a SCDS, and building a volume list definition of the SMS configuration. A unit control block chain is parsed for determining additional specific volumes. It is determined whether a specific volume found in the parsing was not used in the building. In response to a determination that the specific volume found in the parsing was not used in the building, it is determined, for the specific volume found in the parsing, whether at least one predetermined condition is met. The specific volume found in the parsing is added to the volume list definition in response to a determination that the at least one predetermined condition is met.

Using generic volume entries to add specific volumes managed by a storage management subsystem (SMS) to a volume list definition

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

A computer-implemented method of storing I/O statistics of a data set during initialization of a system. The computer-implemented method includes receiving during system initialization, by a processor, a data extent block associated with the data set. Next, the method identifies during system initialization, by the processor, a data set statistics block linked to an identified data set block, and stores, by the processor, the I/O statistics in the data set statistics block.

Making available input/output statistics for data sets opened during initial program load

A computer-implemented method according to one embodiment includes receiving a request for a creation or expansion of a file within a predetermined volume of a system, determining that a first amount of available space within the predetermined volume is insufficient to allow the creation or expansion of the file within the predetermined volume of the system, expanding the first amount of available space within the predetermined volume to create a second amount of available space that is greater than the first amount of available space, in response to determining that the first amount of available space is insufficient, and implementing the creation or expansion of the file within the predetermined volume of the system, utilizing the second amount of available space within the predetermined volume.

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San Jose, CA, United States of America

Tan Q Nguyen