Managing program access to data storage resources

Patent metadata

Field	Value
Publication number	US-10019175-B2
Application number	US-201615252441-A
Country	US
Kind code	B2
Filing date	Aug 31, 2016
Priority date	Aug 31, 2016
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A computer-implemented method comprises identifying a storage subsystem comprising one or more storage address units and associated with one or more access interfaces; identifying an address-interface correlation conclusion; and identifying a target address unit identification associated with at least of the one or more storage address units. The computer-implemented method further comprises determining a target interface conclusion associated with at least one of the one or more access interfaces based on the address-interface correlation guideline and the target address unit identification. A corresponding computer program product and computer system are also disclosed.

First claim

What is claimed is:

1. A computer-implemented method comprising:
identifying a storage subsystem, said storage subsystem comprising one or more storage address units and being associated with one or more access interfaces;
identifying an address-interface correlation guideline, wherein said address-interface correlation guideline is determined based on a hash function consisting of the following function:
Hash(storage_address)=(storage_address/storage_interface_count)modulus(storage_interface_count);

receiving a target address unit identification, said target address unit identification being associated with at least one of said one or more storage address units; and
determining a target interface conclusion based on said address-interface correlation guideline and said target address unit identification, said target interface correlation conclusion being associated with at least one of said one or more access interfaces.

2. The computer-implemented method of claim 1 , wherein said hash function is determined based on said target address unit identification and a count of said one or more access interfaces.

3. The computer-implemented method of claim 1 , further comprising:
determining an access path based on said target interface conclusion, said access path being associated with said target address unit identification.

4. The computer-implemented method of claim 1 , wherein each of said one or more access interfaces is associated with a cache component.

5. The computer-implemented method of claim 1 , wherein said address-interface correlation guideline is determined based on one-to-one correlations between said one or more storage address units and said one or more access interfaces.

6. A computer program product, comprising one or more computer readable storage media and program instructions stored on said one or more computer readable storage media, said program instructions comprising instructions to:
identify a storage subsystem, said storage subsystem comprising one or more storage address units and being associated with one or more access interfaces;
identify an address-interface correlation guideline, wherein said address-interface correlation guideline is determined based on a hash function consisting of the following function:
Hash(storage_address)=(storage_address/storage_interface_count)modulus(storage_interface_count);

receive a target address unit identification, said target address unit identification being associated with at least one of said one or more storage address units; and
determine a target interface conclusion based on said address-interface correlation guideline and said target address unit identification, said target interface correlation conclusion being associated with at least one of said one or more access interfaces.

7. The computer program product of claim 6 , wherein said hash function is determined based on said target address unit identification and a count of said one or more access interfaces.

8. The computer program product of claim 6 , wherein program instructions further comprise instructions to:
determine an access path based on said target interface conclusion, said access path being associated with said target address unit identification.

9. The computer program product of claim 6 , wherein each of said one or more access interfaces is associated with a cache component.

10. The computer program product of claim 6 , wherein said address-interface correlation guideline is determined based on one-to-one correlations between said one or more storage address units and said one or more access interfaces.

11. A computer system comprising:
a processor;
one or more computer readable storage media;
computer program instructions;
said computer program instructions being stored on said one or more computer readable storage media; and
said computer program instructions comprising instructions to:
identify a storage subsystem, said storage subsystem comprising one or more storage address units and being associated with one or more access interfaces;
identify an address-interface correlation guideline, wherein said address-interface correlation guideline is determined based on a hash function consisting of the following function:
Hash(storage_address)=(storage_address/storage_interface_count)modulus(storage_interface_count);

receive a target address unit identification, said target address unit identification being associated with at least one of said one or more storage address units; and
determine a target interface conclusion based on said address-interface correlation guideline and said target address unit identification, said target interface correlation conclusion being associated with at least one of said one or more access interfaces.

12. The computer system of claim 11 , wherein said hash function is determined based on said target address unit identification and a count of said one or more access interfaces.

13. The computer system of claim 11 , wherein computer program instructions further comprise instructions to:
determine an access path based on said target interface conclusion, said access path being associated with said target address unit identification.

14. The computer system of claim 11 , wherein each of said one or more access interfaces is associated with a cache component.

Assignees

• IBM

Inventors

• Reyes Sergio
• Twichell Brian C

Classifications

• G06F3/0673

  Single storage device · CPC title

• G06F3/0635

  by changing the path, e.g. traffic rerouting, path reconfiguration · CPC title

• G06F3/0611 Primary

  in relation to response time · CPC title

• G06F3/0659

  Command handling arrangements, e.g. command buffers, queues, command scheduling · CPC title

• G06F3/0683

  Plurality of storage devices · CPC title