Cluster configuration systems and methods

• US 9,146,822 B2
• Filed: 06/30/2010
• Issued: 09/29/2015
• 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
• Primary Examiner(s): Ly, Cheyne D
• Application Number:
  US12/827,911
• Publication Number:
  US 20120005164A1
• Time in Patent Office: 1,917 Days
• Field of Search: 707/638, 707/695, 707/737
• US Class Current: 1/1
• 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, wherein cluster configuration version information associated with said first node includes a first configuration version indication and cluster configuration version information associated with said second node includes a second configuration version indication;

evaluating said first node as a potential configuration update node for said second node, including evaluating an indication of potential update availability of a partial snapshot, wherein evaluating said first node comprises subtracting said first configuration version indication from said second configuration version indication;

performing an update type selection when said subtraction of said first configuration version indication from said second configuration version indication indicates the first configuration version indication is more recent than the second configuration version indication, 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, wherein said performing an update includes performing a partial upload of snapshot information from said first node.

2. The cluster configuration method of claim 1 wherein 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 performing an update for said second node includes performing a full upload of snapshot information from said first node if said subtraction results in a negative number, further comprising selecting an error update type indication.

4. The cluster configuration method of claim 1 wherein said update is performed when the absolute value of the result of said subtracting of said first configuration version indication from said second configuration version indication 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 performing an update 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 evaluating said first node further comprises determining ability of said first node to respond to a second node joining said cluster, including 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 non-transitory 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, wherein said cluster configuration version information associated with said first node includes a first configuration version indication and said cluster configuration version information associated with said second node includes a second configuration version indication;

evaluating said first node as a potential configuration update node for said second node, including evaluating an indication of potential update availability of a partial snapshot, wherein evaluating said first node comprises subtracting said first configuration version indication from said second configuration version indication;

performing an update type selection when said subtraction of said first configuration version indication from said second configuration version indication indicates the first configuration version indication is more recent than the second configuration version indication, 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, wherein said performing an update includes performing a partial upload of snapshot information from said first node.

9. The non-transitory computer readable storage medium of claim 8 wherein 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 non-transitory computer readable storage medium of claim 8 wherein performing an update for said second node includes performing a full upload of snapshot information from said first node if said subtraction results in a negative number, further comprising selecting an error update type indication.

11. The non-transitory computer readable storage medium of claim 8 wherein said update is performed when the absolute value of the result of said subtracting of said first configuration version indication from said second configuration version indication is less than or equal to a number of gab messages that are store on the first node.

12. The non-transitory computer readable storage medium of claim 11 wherein performing an update 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 non-transitory computer readable storage medium of claim 8 wherein evaluating said first node further comprises 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 non-transitory 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, wherein said cluster configuration version information associated with said first node includes a first configuration version indication and said cluster configuration version information associated with said second node includes a second configuration version indication;

evaluating said first node as a potential configuration update node for said second node, including evaluating an indication of potential update availability of a partial snapshot, wherein evaluating said first node comprises subtracting said first configuration version indication from said second configuration version indication;

performing an update type selection when said subtraction of said first configuration version indication from said second configuration version indication indicates the first configuration version indication is more recent than the second configuration version indication, 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, wherein said performing an update includes performing a partial upload of snapshot information from said first node.

16. The computer system of claim 15 wherein 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 performing an update for said second node includes performing a full upload of snapshot information from said first node if said subtraction results in a negative number, further comprising selecting an error update type indication.

18. The computer system of claim 15 wherein said update is performed when the absolute value of the result of said subtracting of said first configuration version indication from said second configuration information is less than or equal to a number of gab messages that are stored on the first node.

19. The computer system of claim 18 wherein performing an update 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 evaluating said first node further comprises determining ability of said first node to respond to a second node cluster join request includes analyzing update responsiveness of said first node.