Optimized process for balancing load for data mirroring

• US 20040006622A1
• Filed: 07/03/2002
• Published: 01/08/2004
• Est. Priority Date: 07/03/2002
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Burkes, Don L., Sarkar, Soumitra, Kaminsky, David L., Wolfe, David M.
• Application Number:
  US10/189,270
• Publication Number:
  US 20040006622A1
• Time in Patent Office: Days
• US Class Current: 709/225
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/1008 based on parameters of servers, e.g. available memory or workload monitoring of computer activity G06F11/30
• CPC Class Codes: H04L 67/1023 based on a hash applied to IP addresses or costs
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066

Abstract

A method, system, and computer program product for facilitating data transfers from a source node group to a target node group. In one embodiment of the invention, a source node selection request is sent to the source node group. The node selection request includes a data transfer session identifier. A source master node belonging to the source node group is configured to route the node selection request to a sending node using a predefined source node selection policy. A target node selection request is sent from the data sending node to the target node group. A target master node belonging to the target node group is configured to route the request to a receiving node using a predefined target node selection policy. The selection policies may include choosing the least loaded node in the data receiving node group.

Claims

1. A computer program product embodied in a tangible media comprising:

computer readable program codes coupled to the tangible media for facilitating data transfers from a source node group to a target node group, the computer readable program codes configured to cause the program to;

send from the target node group an initial selection request; and

select a data receiving node using a predefined target node selection policy, wherein the data receiving node belongs to the target node group.

2. The computer program product of claim 1, wherein the initial selection request is adapted to be sent from the target node group to the source node group.

3. The computer program product of claim 2, wherein the computer readable program codes are further configured to cause the program to receive at the target node group a second selection request from the source node group, the second selection request adapted to identify a data sending node belonging to the source node group.

4. The computer program product of claim 3, wherein the computer readable program codes are further configured to cause the program to select the data sending node using a predefined source node selection policy.

5. The computer program product of claim 1, wherein the initial selection request is adapted to be sent from the target node group to the target node group.

6. The computer program product of claim 5, wherein the computer readable program codes are further configured to cause the program to send from the data receiving node a second selection request to the source node group, the second selection request adapted to identify the data receiving node.

7. The computer program product of claim 6, wherein the computer readable program codes are further configured to cause the program to select a data sending node using a predefined source node selection policy, the data sending node belonging to the source node group.

8. A computer program product embodied in a tangible media comprising:

computer readable program codes coupled to the tangible media for facilitating data transfers from a source node group to a target node group, the computer readable program codes configured to cause the program to;

send from the source node group an initial selection request; and

select a data sending node using a predefined source node selection policy, wherein the data sending node belongs to the source node group.

9. The computer program product of claim 8, wherein the initial selection request is adapted to be sent from the source node group to the target node group.

10. The computer program product of claim 9, wherein the computer readable program codes are further configured to cause the program to receive at the source node group a second selection request from the target node group, the second selection request adapted to identify a data receiving node belonging to the target node group.

11. The computer program product of claim 10, wherein the computer readable program codes are further configured to cause the program to select the data receiving node using a predefined target node selection policy.

12. The computer program product of claim 8, wherein the initial selection request is adapted to be sent from the source node group to the source node group.

13. The computer program product of claim 12, wherein the computer readable program codes are further configured to cause the program to send from the data sending node a second selection request to the target node group, the second selection request adapted to identify the data sending node.

14. The computer program product of claim 13, wherein the computer readable program codes are further configured to cause the program to select a data receiving node using a predefined target node selection policy, the data receiving node belonging to the target node group.

15. A method for facilitating data transfers from a source node group to a target node group, the method comprising:

sending from the target node group an initial selection request; and

selecting a data receiving node using a predefined target node selection policy, wherein the data receiving node belongs to the target node group.

16. The method of claim 15, wherein sending from the target node group the initial selection request includes sending the initial selection request to the source node group.

17. The method of claim 16, further comprising receiving at the target node group a second selection request from the source node group, the second selection request identifying a data sending node, wherein the data sending node belongs to the source node group.

18. The method of claim 17, further comprising selecting the data sending node using a predefined source node selection policy.

19. The method of claim 15, wherein sending from the target node group the initial selection request includes sending the initial selection request to the target node group.

20. The method of claim 19, further comprising sending from the data receiving node a second selection request to the source node group, the second selection request identifying the data receiving node.

21. The method of claim 20, further comprising selecting a data sending node using a predefined source node selection policy, the data sending node belonging to the source node group.

22. A method for facilitating data transfers from a source node group to a target node group, the method comprising:

sending from the source node group an initial selection request; and

selecting a data sending node using a predefined source node selection policy, wherein the data sending node belongs to the source node group.

23. The method of claim 22, wherein sending from the source node group the initial selection request includes sending the initial selection request to the target node group.

24. The method of claim 23, further comprising receiving at the source node group a second selection request from the target node group, the second selection request identifying a data receiving node, wherein the data receiving node belongs to the target node group.

25. The method of claim 24, further comprising selecting the data receiving node using a predefined target node selection policy.

26. The method of claim 22, wherein sending from the source node group the initial selection request includes sending the initial selection request to the source node group.

27. The method of claim 26, further comprising sending from the data sending node a second selection request to the target node group, the second selection request identifying the data sending node.

28. The method of claim 27, further comprising selecting a data receiving node using a predefined target node selection policy, the data receiving node belonging to the target node group.

29. A system for facilitating data transfers between node groups, the system comprising:

a target node group including a data receiving node; and

tangible media coupled to computer readable program codes, the computer readable program codes configured to;

send from the target node group an initial selection request; and

select the data receiving node using a predefined target node selection policy.

30. The system of claim 29, wherein the initial selection request is adapted to be sent from the target node group to a source node group.

31. The system of claim 30, wherein the computer readable program codes are further configured to receive at the target node group a second selection request from the source node group, the second selection request adapted to identify a data sending node belonging to the source node group.

32. The system of claim 31, wherein the computer readable program codes are further configured to select the data sending node using a predefined source node selection policy.

33. The system of claim 29, wherein the initial selection request is adapted to be sent from the target node group to the target node group.

34. The system of claim 33, wherein the computer readable program codes are further configured to send from the data receiving node a second selection request to a source node group, the second selection request adapted to identify the data receiving node.

35. The system of claim 34, wherein the computer readable program codes are further configured to select a data sending node using a predefined source node selection policy, the data sending node belonging to the source node group.

36. A system for facilitating data transfers between node groups, the system comprising:

a source node group including a data sending node; and

tangible media coupled to computer readable program codes, the computer readable program codes configured to;

send from the source node group an initial selection request; and

select the data sending node using a predefined source node selection policy.

37. The system of claim 36, wherein the initial selection request is adapted to be sent from the source node group to a target node group.

38. The system of claim 37, wherein the computer readable program codes are further configured to receive at the source node group a second selection request from the target node group, the second selection request adapted to identify a data receiving node belonging to the target node group.

39. The system of claim 38, wherein the computer readable program codes are further configured to select the data receiving node using a predefined target node selection policy.

40. The system of claim 36, wherein the initial selection request is adapted to be sent from the source node group to the source node group.

41. The system of claim 40, wherein the computer readable program codes are further configured to send from the data sending node a second selection request to a target node group, the second selection request adapted to identify the data sending node.

42. The system of claim 41, wherein the computer readable program codes are further configured to select a data receiving node using a predefined target node selection policy, the data receiving node belonging to the target node group.

43. A system for facilitating data transfers between node groups, the system comprising:

a first node group initiating a data transfer with a second node group; and

means for selecting a node in the first group for the data transfer using a predefined node selection policy.