INHIBITING TRACKS WITHIN A VOLUME OF A STORAGE CONTROLLER

• US 20180239544A1
• Filed: 02/22/2017
• Published: 08/23/2018
• Est. Priority Date: 02/22/2017
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Gundy, Lisa J., Koester, Michael J., Miner, Kevin L.
• Granted Patent: US 10,782,893 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 3/0619 in relation to data integrity, e.g. data losses, bit errors
• CPC Class Codes: G06F 3/0647 Migration mechanisms
• CPC Class Codes: G06F 3/065 Replication mechanisms
• CPC Class Codes: G06F 3/0685 Hybrid storage combining heterogeneous device types, e.g. hierarchical storage, hybrid arrays

Abstract

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.

Claims

1. A computer-implemented method, comprising:

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.

2. The computer-implemented method of claim 1, wherein the storage system includes a direct access storage device (DASD).

3. The computer-implemented method of claim 1, wherein the first command includes a channel program (CCW) that specifies the one or more tracks.

4. The computer-implemented method of claim 1, wherein the one or more tracks are identified utilizing the first command, where the first command includes a command to create the one or more tracks within the volume of the storage system.

5. The computer-implemented method of claim 1, wherein the one or more tracks are identified utilizing the previous command, where the previous command includes a command to create the one or more tracks within the volume of the storage system that is sent prior to the first command.

6. The computer-implemented method of claim 1, wherein inhibiting the one or more tracks includes preventing outboard copying to the track.

7. The computer-implemented method of claim 1, wherein the second command includes a copy services command.

8. The computer-implemented method of claim 1, wherein the second command is issued during data migration.

9. The computer-implemented method of claim 1, further comprising receiving a third command to uninhibit the one or more tracks within the volume of the storage system.

10. The computer-implemented method of claim 9, further comprising uninhibiting the one or more tracks within the volume of the storage system in response to the third command.

11. A computer program product for inhibiting one or more tracks within a volume of a storage system, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a transitory signal per se, the program instructions executable by a processor to cause the processor to perform a method comprising:

receiving a first command to inhibit one or more tracks within a volume of a storage system, utilizing the processor;

in response to the first command;

identifying, utilizing the processor, 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, utilizing the processor;

receiving a second command to copy data to the one or more tracks within the volume of the storage system, utilizing the processor;

identifying the one or more tracks within the volume of the storage system as inhibited, utilizing the processor; and

rejecting the second command, in response to the identifying, utilizing the processor.

12. The computer program product of claim 11, wherein the storage system includes a direct access storage device (DASD).

13. The computer program product of claim 11, wherein the first command includes a channel program (CCW) that specifies the one or more tracks.

14. The computer program product of claim 11, wherein the one or more tracks are identified utilizing the first command, where the first command includes a command to create the one or more tracks within the volume of the storage system.

15. The computer program product of claim 11, wherein the one or more tracks are identified utilizing the previous command, where the previous command includes a command to create the one or more tracks within the volume of the storage system that is sent prior to the first command.

16. The computer program product of claim 11, wherein inhibiting the one or more tracks includes preventing outboard copying to the track.

17. The computer program product of claim 11, wherein the second command includes a copy services command.

18. The computer program product of claim 11, wherein the second command is issued during data migration.

19. The computer program product of claim 11, further comprising receiving a third command to uninhibit the one or more tracks within the volume of the storage system.

20. A system, comprising:

a processor; and

logic integrated with the processor, executable by the processor, or integrated with and executable by the processor, the logic being configured to;

receive a first command to inhibit one or more tracks within a volume of a storage system;

in response to the first command;

identify the one or more tracks within the volume of the storage system, utilizing the first command or a previous command, and

inhibit the one or more tracks within the volume of the storage system;

receive a second command to copy data to the one or more tracks within the volume of the storage system;

identify the one or more tracks within the volume of the storage system as inhibited; and

reject the second command, in response to the identification.