Distributed notification and action mechanism for mirroring-related events

• US 20040133670A1
• Filed: 01/04/2003
• Published: 07/08/2004
• Est. Priority Date: 01/04/2003
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Kaminsky, David L., Ogle, David M.
• Granted Patent: US 8,250,202 B2
• Time in Patent Office: Days
• US Class Current: 709/224
• CPC Class Codes: G06F 11/2069 Management of state, configuration or failover

Abstract

A method, system, and computer code for administrating a data mirroring relationship between a first node and a second node. The invention includes an event coordinator configured to receive a notification from the first node when an event that may potentially affect the mirroring relationship has occurred, and to perform a predetermined task in response to the notification. The predetermined task may include logging the event that occurred at the first node, notifying the second node that the event occurred at the first node, and notifying a system administrator that the event occurred at the first node.

Claims

1. A method for administrating a data mirroring relationship between a first node and a second node, the method comprising:

receiving a notification when an event has occurred at the first node;

determining whether the event may potentially affect the mirroring relationship; and

performing a predetermined task in response to the notification if the event potentially affects the mirroring relationship.

2. The method of claim 1, wherein the predetermined task performed is based on the event that occurred at the first node.

3. The method of claim 1, wherein performing the predetermined task further comprises logging the event that occurred at the first node.

4. The method of claim 1, wherein performing the predetermined task further comprises notifying the second node that the event occurred at the first node.

5. The method of claim 4, wherein notifying the second node further comprises searching a mirroring list for the second node in the mirroring relationship with the first node.

6. The method of claim 1, wherein performing the predetermined task further comprises notifying a system administrator that the event occurred at the first node.

7. The method of claim 1, wherein determining whether the event may potentially affect the mirroring relationship includes comparing the event against a list of events.

8. A system for administrating a mirroring relationship between a first node and a second node, the system comprising:

an event coordinator configured to;

receive notification from the first node when an event that may potentially affect the mirroring relationship has occurred; and

perform a task in response to the notification if the event potentially affects the mirroring relationship.

9. The system of claim 8, further comprising a mirroring list coupled to the event coordinator, the mirroring list describing the mirroring relationship between the first node and the second node.

10. The system of claim 8, further comprising an event list identifying a plurality of system events that, if occurring at the first node, may cause the mirroring relationship to fail.

11. The system of claim 10, further comprising an operating system coupled with the first node, the operating system configured to notify the event coordinator when a listed event in the event list has occurred at first node.

12. The system of claim 8, further comprising an operating system coupled with the second node, the operating system configured to receive notification when the event that may potentially affect the mirroring relationship has occurred.

13. The system of claim 8, wherein the event coordinator is further configured to notify a system administrator that the event has occurred at the first node.

14. The system of claim 8, wherein the event coordinator is further configured to log the occurrence of the event in a log document.

15. The system of claim 8, wherein the event coordinator is further configured to notify the second node that the event has occurred at the first node.

16. The system of claim 15, further comprising a mirroring list coupled to the event coordinator, the mirroring list indicating the mirroring relationship between the first node and second node.

17. The system of claim 8, wherein the event coordinator is further configured to compare the event against a list of events.

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

computer readable program codes coupled to the tangible media for administrating a data mirroring relationship between a first node and a second node, the computer readable program codes configured to cause the program to;

receive a notification when an event has occurred at the first node;

determine whether the event may potentially affect the mirroring relationship; and

perform a task in response to the notification if the event potentially affects the mirroring relationship.

19. The computer program product of claim 18, wherein the computer readable program code to perform a task in response to the notification further comprises computer readable program code configured to cause the program to log the event that occurred at the first node.

20. The computer program product of claim 18, wherein the computer readable program code to perform a task in response to the notification further comprises computer readable program code configured to cause the program to notify the second node that the event occurred at the first node.

21. The computer program product of claim 20, wherein the computer readable program code to notify the second node that the event occurred at the first node further comprises computer readable program code configured to cause the program to search a mirroring list for the second node in the mirroring relationship with the first node.

22. The computer program product of claim 18, wherein the computer readable program code to perform a task in response to the notification further comprises computer readable program code configured to cause the program to notify a system administrator that the event occurred at the first node.

23. The computer program product of claim 18, wherein the computer readable program code to determine whether the event may potentially affect the mirroring relationship further comprises computer readable program code configured to cause the program to compare the event against a list of events.

24. A system for administrating a data mirroring relationship between a first node and a second node, the system comprising:

means for receiving a notification when an event has occurred at the first node;

means for determining whether the event may potentially affect the mirroring relationship; and

means for performing a predetermined task in response to the notification if the event potentially affects the mirroring relationship.