International Business Machines Corporation

Globalfoundries Inc.

Michael Koester

Kevin L Miner

Gavin Stuart Johnson

Carrie J Van Noorden

John Richard Paveza

Trinh Huy Nguyen

Richard Alan Schaeffer

Matthew J Kalos

Clint Alan Hardy

Susan Kay Candelaria

Jaya Srikrishnan

Lisa Joan Gundy

Gerard Maclean Dearing

Harold Steven Huber

Cecilia Carranza Lewis

James B Cammarata

Thao Bich Bui

Stephen Merritt Branch

Raymond Eugene Garcia

Camvu Pham

Leslie A Barton

Jeanne Vangsness

Steven Huntington

Thomas E Litty

Provided are a computer program product, system, and method for applying a code update to a target system from a personal communication device. A code update command is received from a messaging application, executing on the personal communication device of the user, indicating a code update to install on the target system a code update maintained in the target system. The code update command is processed to extract indication of the code update to install and a target system user identifier of the target system on which to install the code update. At least one job is generated to install the code update on the target system. The at least one job is transmitted to the target system to cause the target system to process the at least one job to install the code update.

Applying a code update to a target system from a personal communication device

Provided are a computer program product, system, and method for deleted data restoration in accordance with one embodiment of the present description, in which in response to a search request having specified search parameters, data of a deleted data unit is located as a function of specified search parameters. In addition, metadata erased as a result of the deletion operation, is restored as a function of the located data. Accordingly, the previously deleted data unit is undeleted and access to the previously deleted data unit is restored via the restored metadata. Other aspects of deleted data restoration in accordance with the present description are described.

Deleted data restoration

A method for safely sharing access to a volume is disclosed. In one embodiment, such a method includes notifying a storage system that a volume on the storage system is in use by a first host system. The method stores, on the storage system, a first indicator indicating the volume is in use by the first host system. When the storage system receives an I/O request from a second host system to access data on the volume, the storage system reads the first indicator to determine that the volume is in use by the first host system. The storage system may then reject the I/O request from the second host system as a result of the first indicator. A corresponding system and computer program product are also disclosed.

Safe shared volume access

In one aspect of storage device status management in accordance with the present description, a host can determine not only whether a particular volume maintained by a storage unit controlled by a storage controller is on-line with respect to another host, but also whether that volume is actually in use by another host. Accordingly, should one host determine that a volume is in use by another host, the one host can defer its use of the volume until the volume is no longer in use by another host. In this manner, conflicts which may lead to loss of data integrity may be reduced or eliminated, providing a significant improvement in computer technology. Other features and aspects may be realized, depending upon the particular application.

Storage device status management for conflict avoidance in a data storage system

A computer-implemented method according to one embodiment includes receiving a first command to inhibit one or more tracks within a volume of a storage system, in response to the first command, identifying the one or more tracks within the volume of the storage system, utilizing the first command or a previous command, and inhibiting the one or more tracks within the volume of the storage system, receiving a second command to copy data to the one or more tracks within the volume of the storage system, identifying the one or more tracks within the volume of the storage system as inhibited, and rejecting the second command, in response to the identifying.

Inhibiting tracks within a volume of a storage system

A storage controller receives a command to delete a dataset stored in a first set of storage volumes controlled by the storage controller. In response to receiving the command, a determination is made as to whether an indicator has been enabled to protect the dataset against an accidental deletion. In response to determining that the indicator has been enabled, the dataset is copied from the first set of storage volumes to a second set of storage volumes controlled by the storage controller. In response to completion of the copying of the dataset from the first set of storage volumes to the second set of storage volumes, the command to delete the dataset stored in the first set of storage volumes is executed.

System managed facilitation of backup of dataset before deletion

A computer-implemented method according to one embodiment includes receiving a request to initialize a storage device, the request including a volume serial number associated with the storage device, identifying a size of the storage device, where the size is indicated within the request, determining a size of a table of contents and a location for the table of contents within the storage device, based on the identified size of the storage device, selecting a type of the table of contents from a plurality of different types, based on the identified size of the storage device, and automatically initializing the storage device, including creating the table of contents, reserving a physical area of the storage device for the table of contents using a physical extent, and inserting the table of contents into the storage device, where the table of contents has the determined size of the table of contents, the determined location for the table of contents, and the selected type of the table of contents.

Dynamically managing a table of contents

In one embodiment, a computer program product for managing a reserve command includes a computer readable storage medium having program code embodied therewith, the program code readable and/or executable by a processor to receive, by the processor, a request to access a data set on one or more volumes of at least one direct access storage device (DASD), the request including a reserve command, and each of the one or more volumes including a consecutive set of one or more tracks of the at least one DASD, and reserve one or more extents of the at least one DASD while reserving less than a volume of the at least one DASD and not allowing any other entity than an entity which requested the reserve to access the one or more extents of the at least one DASD that have been reserved.

Extent-level reserve and release for a direct access storage device (DASD) volumes

In one general embodiment, a computer-implemented method includes initializing a storage volume, receiving a request to secure unallocated data within the storage volume, sending a bit map to a hardware portion of the storage volume, in response to receiving the request, identifying unallocated data within the hardware portion of the storage volume utilizing the bit map, and marking the unallocated data as read inhibited within the hardware portion of the storage volume.

Protecting unallocated data within a storage volume

In one embodiment, a computer-implemented method includes: receiving a request to establish a Peer-to-Peer Remote Copy (PPRC) relationship between a primary storage system and a secondary storage system; and copying one or more data tracks of a primary storage device in the primary storage system to the secondary storage system without copying at least one other data track of the primary storage device to the secondary storage system. The one or more data tracks of the primary storage device comprise one or more data tracks of a first characteristic. Other portions of the primary storage device comprise one or more other data tracks of a second characteristic. Tracks of the first characteristic may include valid data records, while tracks of the second characteristic may include invalid data records and/or empty tracks. Corresponding systems and computer program products are also disclosed.

Selective copying of track data through peer-to-peer remote copy

A computer-implemented method according to one embodiment includes receiving a request to initialize a storage device, identifying a size of the storage device to be initialized, determining a size of a table of contents and a location for the table of contents within the storage device, based on the identified size of the storage device to be initialized, determining a type of the table of contents; and initializing the storage device, utilizing the determined size of the table of contents, the determined location for the table of contents, and the determined type of the table of contents.

In one embodiment, a method includes receiving a request to establish a Peer-to-Peer Remote Copy (PPRC) relationship between a primary storage system and a secondary storage system, and copying one or more data tracks of a primary storage device in the primary storage system to the secondary storage system without copying at least one other data track of the primary storage device to the secondary storage system. The one or more data tracks of the primary storage device comprise one or more data tracks of a first characteristic. Other portions of the primary storage device comprise one or more other data tracks of a second characteristic.

Selective copying of track data based on track data characteristics through map-mediated peer-to-peer remote copy

Various embodiments of accidental shared volume erasure prevention include systems, methods, and/or computer program products for receiving a request to access a volume from a requesting system, determining whether the volume is associated with any system other than the requesting system, and preventing accidental erasure of the volume based on the determination.

Accidental shared volume erasure prevention

In one embodiment, a primary storage system, includes: logic integrated with and/or executable by at least one controller, the logic being adapted to: receive a request to establish a Peer-to-Peer Remote Copy (PPRC) relationship between a primary storage system and a secondary storage system; set a path between the primary storage system and the secondary storage system via a hardwire connection in response to receiving the request; receive a memory map; establish the PPRC relationship between the primary storage system and the secondary storage system in response to receiving the memory map; and copy, based at least in part on the memory map, one or more data tracks of a primary storage device to the secondary storage system without copying at least one other data track of the primary storage device to the secondary storage system.

Systems, methods and computer program products for selective copying of track data through peer-to-peer remote copy

A method, system and computer-program product for re-initializing a storage volume with an previously created volume map being preserved to allow access to previously stored data sets. The invention includes creating a new volume map in an unused volume area where the new volume map has pointers to new data sets. One of the new data sets contains the previously created volume map that points to previously created data sets. Each volume map is referenced by a volume label and includes a VTOC and an optional VTOC index. The pointers in the VTOC are data set control block (DSCB) records.

Growing community of inventors

Hollister, CA, United States of America

Michael Koester