CLUSTER CONFIGURATION SYSTEMS AND METHODS

• US 20120005164A1
• Filed: 06/30/2010
• Published: 01/05/2012
• Est. Priority Date: 06/30/2010
• Status: Active Grant

• Current Assignee: Veritas Technologies, LLC (Whitehouse Group Ltd.)
• Original Assignee: Symantec Corporation (NortonLifeLock Inc.)
• Inventors: Patankar, Swapnil Dilip, Tyagi, Prabhat Alok, Rach, Hetal Dhiren, Martis, Rodney Peter
• Granted Patent: US 9,146,822 B2
• Time in Patent Office: Days
• US Class Current: 707/649
• CPC Class Codes: G06F 11/202 where processing functionality is redundant redundant communication control functionality G06F11/2005, redundant storage control functionality G06F11/2089
• CPC Class Codes: G06F 11/2097 maintaining the standby controller/processing unit updated initialisation or re-synchronisation thereof G06F11/1658 and subgroups

Abstract

Systems and methods for cluster maintenance are presented. In one embodiment a cluster configuration method includes: maintaining configuration information associated with a first node and a second node, including cluster configuration version information; evaluating the first node as a potential configuration update node for the second node, including evaluating an indication of potential partial snapshot update availability based upon the configuration information associated with the first node and configuration information associated with the second node; performing an update type selection, including continued analysis of partial snapshot update availability; and performing an update for the second node in accordance with results of the update type selection. Evaluating the first node as a potential configuration update node can include comparing an available configuration version indication associated with the first node to the available cluster configuration version indication associated with the second node.

Claims

1. A cluster configuration method comprising:

maintaining configuration information associated with a first node and a second node, including cluster configuration version information;

evaluating said first node as a potential configuration update node for said second node, including evaluating an indication of potential partial snapshot update availability based upon said configuration information associated with said first node and configuration information associated with said second node;

performing an update type selection, including determining whether to select a partial snapshot update information indication; and

performing an update for said second node in accordance with results of said update type selection.

2. The cluster configuration method of claim 1 wherein said evaluating said first node as a potential configuration update node includes comparing an earliest available configuration version indication associated with the first node to the latest available cluster configuration version indication associated with the second node.

3. The cluster configuration method of claim 1 wherein:

said cluster configuration version information on said first node includes a first configuration version indication and said cluster configuration version information on said second node includes a second configuration version indication; and

said determining ability of said first node to respond to a second node joining said cluster includes subtracting said first configuration version indication from said second configuration version indication.

4. The cluster configuration method of claim 3 wherein said performing a cluster join for said second node includes a partial upload of snapshot information from said first node if said subtracting of said second configuration version indication from said first configuration version indication results in a positive number and the result is less than or equal to a number of gab messages that are stored on the first node.

5. The cluster configuration method of claim 4 wherein said performing a cluster join for said second node includes a full upload of snapshot information from said first node if said subtracting of said second configuration version indication from said first configuration version indication result is greater than the number of gab messages that are stored on the first node.

6. The cluster configuration method of claim 1 wherein said determining ability of said first node to respond to a second node joining said cluster includes analyzing update responsiveness of said first node.

7. The cluster configuration method of claim 6 wherein snapshot information is uploaded from said first node if said first node is the first to respond to said second node cluster joining said cluster.

8. A computer readable storage medium having stored thereon, computer executable instructions that, if executed by a computer system cause the computer system to perform a method comprising:

maintaining configuration information associated with a first node and a second node, including cluster configuration version information;

evaluating said first node as a potential configuration update node for said second node, including evaluating an indication of potential partial snapshot update availability based upon said configuration information associated with said first node and configuration information associated with said second node;

performing an update type selection, including determining whether to select a partial snapshot update information indication; and

performing an update for said second node in accordance with results of said update type selection.

9. The computer readable storage medium of claim 8 wherein said evaluating said first node as a potential configuration update node includes comparing an earliest available configuration version indication associated with the first node to the latest available cluster configuration version indication associated with the second node.

10. The computer readable storage medium of claim 8 wherein:

said cluster configuration version information on said first node includes a first configuration version indication and said cluster configuration version information on said second node includes a second configuration version indication; and

said determining ability of said first node to respond to a second node cluster join request includes subtracting said first configuration version indication from said second configuration version indication.

11. The computer readable storage medium of claim 10 wherein said performing a cluster join for said second node includes a partial upload of snapshot information from said first node if said subtracting of said second configuration version indication from said first configuration version indication results in a positive number and the result is less than or equal to a number of gab messages that are store on the first node.

12. The computer readable storage medium of claim 11 wherein said performing a cluster join for said second node includes a full upload of snapshot information from said first node if said subtracting of said second configuration version indication from said first configuration version indication result is greater than the number of gab messages that are stored on the first node.

13. The computer readable storage medium of claim 8 wherein said determining ability of said first node to respond to a second node cluster join request includes analyzing update responsiveness of said first node.

14. The computer readable storage medium of claim 13 wherein snapshot information is uploaded from said first node if said first node is the first to respond to said second node cluster join request

15. A computer system, comprising:

a computer system having a processor coupled to a computer readable storage media and executing computer readable code which causes the computer system to perform operations including;

maintaining configuration information associated with a first node and a second node, including cluster configuration version information;

evaluating said first node as a potential configuration update node for said second node, including evaluating an indication of potential partial snapshot update availability based upon said configuration information associated with said first node and configuration information associated with said second node;

performing an update type selection, including determining whether to select a partial snapshot update information indication; and

performing an update for said second node in accordance with results of said update type selection.

16. The computer system of claim 15 wherein said evaluating said first node as a potential configuration update node includes comparing an earliest available configuration version indication associated with the first node to the latest available cluster configuration version indication associated with the second node.

17. The computer system of claim 15 wherein:

said cluster configuration version information on said first node includes a first configuration version indication and said cluster configuration version information on said second node includes a second configuration version indication; and

said determining ability of said first node to respond to a second node cluster join request includes subtracting said first configuration version indication from said second configuration version indication.

18. The computer system of claim 17 wherein said performing a cluster join for said second node includes a partial upload of snapshot information from said first node if said subtracting of said second configuration version indication from said first configuration version indication results in a positive number and the result is less than or equal to a number of gab messages that are store on the first node.

19. The computer system of claim 18 wherein said performing a cluster join for said second node includes a full upload of snapshot information from said first node if said subtracting of said second configuration version indication from said first configuration version indication result is greater than the number of gab messages that are stored on the first node.

20. The computer system of claim 15 wherein said determining ability of said first node to respond to a second node cluster join request includes analyzing update responsiveness of said first node.