Storage unit priority based on configuration information

• US 9,948,525 B2
• Filed: 07/28/2014
• Issued: 04/17/2018
• Est. Priority Date: 07/28/2014
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Inventors: Stark, David, Nazari, Siamak
• Primary Examiner(s): KATSIKIS, KOSTAS J
• Application Number:
  US14/444,742
• Publication Number:
  US 20160028582A1
• Time in Patent Office: 1,359 Days
• Field of Search: 709214, 709215
• CPC Class Codes: G06F 3/06 Digital input from, or digital output to, record carriers , e.g. RAID, emulated record carriers or networked record carriers
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0631 by allocating resources to storage systems
• CPC Class Codes: G06F 3/0665 at area level, e.g. provisioning of virtual or logical volumes
• CPC Class Codes: G06F 3/0683 Plurality of storage devices
• CPC Class Codes: H04L 41/5022 by giving priorities, e.g. assigning classes of service

Abstract

Storage unit priority based on configuration information may be determined, for example, by a processor analyzing configuration information associated with the storage units to create a priority order associated with the storage units. The configuration information associated with each storage unit may be standardized for comparison to the configuration information associated with the other storage units. The processor may perform an action related to the storage units according to the priority order.

Claims

1. A storage system, comprising:

a processor; and

a non-transitory machine readable medium storing instructions that are executable by the processor to cause the processor to;

determine that configuration information associated with one storage unit of a set of storage units is not set, wherein the set of storage units comprises the one storage unit and other storage units;

set the configuration information associated with the one storage unit by assigning a mean value of the configuration information associated with the other storage units to the configuration information associated with the one storage unit;

analyze the configuration information associated with the set of storage units to create a priority order associated with the set of storage units; and

perform an action related to the set of storage units according to the priority order, the action comprising any of;

recovering failed storage units of the set of storage units in an order based on the priority order;

presenting storage units of the set of storage units to hosts in an order based on the priority order; and

in rebalancing the set of storage units, selecting which storage units to move to a new node based on the priority order.

2. The storage system of claim 1, wherein the instructions are further to cause the processor to prioritize the storage units according to a grouping of storage units.

3. The storage system of claim 2, wherein the grouping comprises at least one of:

a grouping based on application and a grouping based on host exportation.

4. The storage system of claim 1, wherein the configuration information comprises at least one of:

export information and quality of service information.

5. The storage system of claim 4, wherein the instructions are further to cause the processor to:

analyze storage unit usage information and

use the storage unit usage information to create the priority order.

6. The storage system of claim 4, wherein the instructions are further to cause the processor to:

determine, for each storage unit of the set of storage units, a standardized configuration value for the respective storage unit by adjusting a value of the configuration information associated with the respective storage unit based on summary information derived from the configuration information of the set of storage units;

determine, for each storage unit of the set of storage units, a priority value for the respective storage unit based on the standardized configuration value of the respective storage unit, and

position the set of storage units in the priority order based on their respective priority values.

7. A method, comprising:

determining an export priority value to associate with one storage unit of a set of storage units based on host export information associated with the one storage unit;

standardizing quality of service information associated with the one storage unit by adjusting at least one quality of service parameter associated with the one storage unit based on quality of service summary information derived from the set of storage units;

determining a quality of service priority value to associate with the one storage unit based on the standardized quality of service information associated with the one storage unit;

determining an aggregated priority value for the one storage unit based on the export priority value and the quality of service priority value; and

positioning the storage unit in a priority list based on the aggregated priority value.

8. The method of claim 7, further comprising, in response to the one storage unit not having a value set for a given quality of service parameter, setting the value of the given quality of service parameter for the one storage unit based on a summary value derived from quality of service information associated with other storage units of the set of storage units.

9. The method of claim 7, wherein the export priority value comprises a first value associated with whether the one storage unit is exported and a second value associated with at least one of how many hosts and host adapters the one storage unit is exported to.

10. The method of claim 7, further comprising:

determining a group aggregated priority value for a grouping that includes the one storage unit based on the aggregated priority value of the one storage unit;

wherein positioning the one storage unit in the priority list based on the aggregated priority value comprises positioning the one storage unit according to the group aggregated priority value.

11. The method of claim 7, further comprising, in response to the one storage unit not having a value set for a given quality of service parameter, setting a system default as the value of the given quality of service parameter for the one storage unit.

12. The method of claim 7,

wherein the priority list is a recovery priority list that indicates an order in which the plurality of storage units are to be recovered during a recovery operation.

13. A non-transitory machine-readable storage medium comprising instructions executable by a processor to:

determine, for each storage unit of a plurality of storage units, at least one standardized quality of service value for the respective storage unit by adjusting a value of a quality of service parameter associated with the respective storage unit based on quality of service summary information derived from the plurality of storage units;

determine, for each storage unit of the plurality of storage units, a quality of service priority value for the respective storage unit based on the at least one standardized quality of service value of the respective storage unit; and

position the plurality of storage units in a priority list based on their respective quality of service priority values.

14. The non-transitory machine-readable storage medium of claim 13, further comprising instructions to:

associate each storage unit of the plurality of storage units with a grouping of at least one groupings;

determine, for each of the at least one groupings, a group aggregated priority value based on the quality of service priority values of the storage units associated with the respective grouping; and

wherein the instructions to position the plurality of storage units in the priority list based on their respective quality of service priority values comprise instructions to position the plurality of storage units according to the group aggregated priority values.

15. The non-transitory machine-readable storage medium of claim 13,

wherein, for each storage unit of a plurality of storage units, the at least one standardized quality of service value is determined for the respective storage unit by:

determining a difference between a value of a quality of service parameter associated with the respective storage unit and a summary value of the quality of service parameter derived from the plurality of storage units and

dividing the difference by a variability value that indicates a variability of values of the quality of service parameter among the plurality of storage units.

16. The non-transitory machine-readable storage medium of claim 13,

wherein the priority list is a recovery priority list that indicates an order in which the plurality of storage units are to be recovered during a recovery operation.

17. The non-transitory machine-readable storage medium of claim 13,

wherein, for each storage unit of the plurality of storage units, the quality of service priority value of the respective storage unit is a summary value of the at least one standardized quality of service value of the respective storage unit.

18. The non-transitory machine-readable storage medium of claim 13, further comprising instructions to:

determine, for each storage unit of the plurality of storage units, an export priority value for the respective storage unit based on host export information associated with the respective storage unit; and

determine, for each storage unit of the plurality of storage units, an aggregate priority value for the respective storage unit based on the export priority value of the respective storage unit and the quality of service priority value of the respective storage unit,

wherein the instructions to position the plurality of storage units in the priority list based on their respective quality of service priority values include instructions to position the plurality of storage units in the recovery priority list based on their respective aggregate priority values.

19. The non-transitory machine-readable storage medium of claim 13, further comprising instructions to:

for each storage unit of the plurality of storage units, if the respective storage unit does not have a value set for a given quality of service parameter, set the value of the given quality of service parameter for the respective storage unit based on a summary value derived from quality of service information associated with other storage units of the plurality of storage units.

20. The non-transitory machine-readable storage medium of claim 13, further comprising instructions to:

for each storage unit of the plurality of storage units, if the respective storage unit does not have a value set for a given quality of service parameter, set the value of the given quality of service parameter for the respective storage unit to a specified default value.