Operating system migration with minimal storage area network reconfiguration

• US 20060130052A1
• Filed: 12/14/2004
• Published: 06/15/2006
• Est. Priority Date: 12/14/2004
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Eisenhauer, Daniel G., Allen, James P., Kovacs, Robert George, Frazier, Giles Roger, Sharma, Satya Prakesh
• Granted Patent: US 8,924,499 B2
• Time in Patent Office: Days
• US Class Current: 717/172
• CPC Class Codes: G06F 8/63 Image based installation; Cloning; Build to order
• CPC Class Codes: H04L 41/0846 based on copy from other elements
• CPC Class Codes: H04L 41/40 using virtualisation of network functions or resources, e.g. SDN or NFV entities

Abstract

Methods, systems, and computer program products are provided for migrating an operating system from a source computer to a destination computer. Some embodiments include identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer, logging off a virtual port name of the source adapter from the login manager, deregistering the virtual port name from the source adapter, registering the virtual port name with the destination adapter, and logging on the destination adapter to the login manager with the virtual port name. Typical embodiments also include transferring the operating system from the source computer to the destination computer.

Claims

1. A method for migrating an operating system from a source computer to a destination computer, the method comprising:

identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer;

logging off a virtual port name of the source adapter from a login manager;

deregistering the virtual port name from the source adapter;

registering the virtual port name with the destination adapter; and

logging on the destination adapter to the login manager with the virtual port name.

2. The method of claim 1 further comprising transferring the operating system from the source computer to the destination computer.

3. The method of claim 1 wherein identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises querying a server for a world-wide port name of destination adapter.

4. The method of claim 1 wherein identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises querying a server for the destination computer of the destination adapter.

5. The method of claim 1 wherein logging off a virtual port name of the source adapter from the login manager further comprises disassociating an N_Port ID from the virtual port name.

6. The method of claim 1 wherein logging on the destination adapter to the login manager with the virtual port name further comprises associating an N_Port ID with the virtual port name.

7. A method for migrating an operating system from a source computer to a destination computer, the method comprising:

identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer;

removing the source adapter from a zone;

adding the destination adapter to the zone;

logging off the source adapter from a login manager; and

logging on the destination adapter to the login manager.

8. The method of claim 7 further comprising transferring the operating system from the source computer to the destination computer.

9. The method of claim 7 wherein removing the source adapter from a zone further comprises:

identifying a zone associated with the source adapter;

identifying targets associated with the source adapter;

disassociating the source adapter from the targets; and

deleting the source adapter from the zone.

10. The method of claim 7 wherein adding the destination adapter to the zone further comprises:

identifying a zone associated with the source adapter;

including the destination adapter in the zone;

identifying targets associated with the source adapter; and

associating the destination adapter with the targets.

11. The method of claim 7 wherein identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises querying a name server for a world-wide port name of destination adapter.

12. The method of claim 7 wherein identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises querying a server for the destination computer of the destination adapter.

13. The method of claim 7 wherein logging on the destination adapter to the login manager further comprises associating an N_Port ID with a port name.

14. The method of claim 7 wherein logging off the source adapter from the login manager further comprises disassociating an N_Port ID from a port name.

15. A system for migrating an operating system from a source computer to a destination computer, the system comprising:

means for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer;

means for logging off a virtual port name of the source adapter from a login manager;

means for deregistering the virtual port name from the source adapter;

means for registering the virtual port name with the destination adapter; and

means for logging on the destination adapter to the login manager with the virtual port name.

16. The system of claim 15 further comprising means for transferring the operating system from the source computer to the destination computer.

17. The system of claim 15 wherein means for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises means for querying a server for a world-wide port name of destination adapter.

18. The system of claim 15 wherein means for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises means for querying a server for the destination computer of the destination adapter.

19. The system of claim 15 wherein means for logging off a virtual port name of the source adapter from the login manager further comprises means for disassociating an N_Port ID from the virtual port name.

20. The system of claim 15 wherein means for logging on the destination adapter to the login manager with the virtual port name further comprises means for associating an N_Port ID with the virtual port name.

21. A system for migrating an operating system from a source computer to a destination computer, the system comprising:

means for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer;

means for removing the source adapter from a zone;

means for adding the destination adapter to the zone;

means for logging off the source adapter from a login manager; and

means for logging on the destination adapter to the login manager.

22. The system of claim 21 further comprising means for transferring the operating system from the source computer to the destination computer.

23. The system of claim 21 wherein means for removing the source adapter from a zone further comprises:

means for identifying a zone associated with the source adapter;

means for identifying targets associated with the source adapter;

means for disassociating the source adapter from the targets; and

means for deleting the source adapter from the zone.

24. The system of claim 21 wherein means for adding the destination adapter to the zone further comprises:

means for identifying a zone associated with the source adapter;

means for including the destination adapter in the zone;

means for identifying targets associated with the source adapter; and

means for associating the destination adapter with the targets.

25. The system of claim 21 wherein means for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises means for querying a name server for a world-wide port name of destination adapter.

26. The system of claim 21 wherein means for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises means for querying a server for the destination computer of the destination adapter.

27. The system of claim 21 wherein means for logging on the destination adapter to the login manager further comprises means for associating an N_Port ID with a port name.

28. The system of claim 21 wherein means for logging off the source adapter from the login manager further comprises means for disassociating an N_Port ID from a port name.

29. A computer program product for migrating an operating computer program product from a source computer to a destination computer, the computer program product comprising:

a recording medium;

means, recorded on the recording medium, for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer;

means, recorded on the recording medium, for logging off a virtual port name of the source adapter from a login manager;

means, recorded on the recording medium, for deregistering the virtual port name from the source adapter;

means, recorded on the recording medium, for registering the virtual port name with the destination adapter; and

means, recorded on the recording medium, for logging on the destination adapter to the login manager with the virtual port name.

30. The computer program product of claim 29 further comprising means, recorded on the recording medium, for transferring the operating computer program product from the source computer to the destination computer.

31. The computer program product of claim 29 wherein means, recorded on the recording medium, for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises means, recorded on the recording medium, for querying a server for a world-wide port name of destination adapter.

32. The computer program product of claim 29 wherein means, recorded on the recording medium, for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises means, recorded on the recording medium, for querying a server for the destination computer of the destination adapter.

33. The computer program product of claim 29 wherein means, recorded on the recording medium, for logging off a virtual port name of the source adapter from the login manager further comprises means, recorded on the recording medium, for disassociating an N_Port ID from the virtual port name.

34. The computer program product of claim 29 wherein means, recorded on the recording medium, for logging on the destination adapter to the login manager with the virtual port name further comprises means, recorded on the recording medium, for associating an N_Port ID with the virtual port name.

35. A computer program product for migrating an operating computer program product from a source computer to a destination computer, the computer program product comprising:

a recording medium;

means, recorded on the recording medium, for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer;

means, recorded on the recording medium, for removing the source adapter from a zone;

means, recorded on the recording medium, for adding the destination adapter to the zone;

means, recorded on the recording medium, for logging off the source adapter from a login manager; and

means, recorded on the recording medium, for logging on the destination adapter to the login manager.

36. The computer program product of claim 35 further comprising means, recorded on the recording medium, for transferring the operating computer program product from the source computer to the destination computer.

37. The computer program product of claim 35 wherein means, recorded on the recording medium, for removing the source adapter from a zone further comprises:

means, recorded on the recording medium, for identifying a zone associated with the source adapter;

means, recorded on the recording medium, for identifying targets associated with the source adapter;

means, recorded on the recording medium, for disassociating the source adapter from the targets; and

means, recorded on the recording medium, for deleting the source adapter from the zone.

38. The computer program product of claim 35 wherein means, recorded on the recording medium, for adding the destination adapter to the zone further comprises:

means, recorded on the recording medium, for identifying a zone associated with the source adapter;

means, recorded on the recording medium, for including the destination adapter in the zone;

means, recorded on the recording medium, for identifying targets associated with the source adapter; and

means, recorded on the recording medium, for associating the destination adapter with the targets.

39. The computer program product of claim 35 wherein means, recorded on the recording medium, for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises means, recorded on the recording medium, for querying a name server for a world-wide port name of destination adapter.

40. The computer program product of claim 35 wherein means, recorded on the recording medium for identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer further comprises means, recorded on the recording medium, for querying a server for the destination computer of the destination adapter.

41. The computer program product of claim 35 wherein means, recorded on the recording medium, for logging on the destination adapter to the login manager further comprises means, recorded on the recording medium, for associating an N_Port ID with a port name.

42. The computer program product of claim 35 wherein means, recorded on the recording medium, for logging off the source adapter from the login manager further comprises means, recorded on the recording medium, for disassociating an N_Port ID from a port name.