Method and apparatus for recovering logical partition configuration data

• US 20040210792A1
• Filed: 04/17/2003
• Published: 10/21/2004
• Est. Priority Date: 04/17/2003
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: International Business Machines Corporation
• Inventors: Wang, Christine, McLaughlin, Charles Andrew, Foster, Robert Kimberlin, Underhill, Joy Mei-Jen
• Granted Patent: US 7,120,823 B2
• Time in Patent Office: Days
• US Class Current: 714/5
• CPC Class Codes: G06F 11/142 Reconfiguring to eliminate the error group management mechanisms in a peer-to-peer network H04L67/1044
• CPC Class Codes: G06F 11/1446 Point-in-time backing up or restoration of persistent data

Abstract

The present invention provides a method, apparatus, and computer instructions for recovering an image of partition configuration information data for a set of partitions having at least one affinity partition in a logical partition data processing system. (Damage to an image of partition configuration data is detected. Current partition data is compared with a backup partition data. A merger of the current partition configuration data is made with the backup logical partition data if a conflict is present between the current partition configuration data and the backup partition data. The merger is performed in a manner avoiding stopping an operation on a running partition in the set of partitions.

Claims

1. A method in a data processing system for recovering an image of partition configuration information data for a set of partitions having at least one affinity partition, the method comprising:

detecting damage to an image of partition configuration data;

comparing current partition data with a backup partition data; and

performing a merger of the current partition configuration data with the backup logical partition data if a conflict is present between the current partition configuration data and the backup partition data, wherein merger is performed in a manner avoiding stopping an operation on a running partition in the set of partitions.

2. The method of claim 1, wherein the performing step comprises:

using current partition configuration data for a partition in the set of partitions to restore the image of configuration data if the partition is defined as an affinity partition in the current logical partition data; and

using backup partition configuration data to restore the image of configuration information for the partition if the partition in defined as a normal partition in the current partition configuration data and in the backup partition configuration data; and

using the backup partition configuration data to restore the image of configuration information of the partition if the partition defined as normal in the backup partition configuration data is undefined or defined as normal in the current partition configuration data.

3. The method of claim 1 wherein the current logical partition data is stored in a non-volatile memory.

4. The method of claim 1, wherein the backup logical partition data is stored in a backup image created by a user previously storing logical partition data.

5. The method of claim 1, wherein the current logical partition data is stored in a mirror image.

6. The method of claim 1 further comprising:

using the backup partition configuration data if a conflict is absent.

7. A method in a data processing system for recovering an image of partition configuration information for a set of partitions, the method comprising:

comparing current partition configuration data with a backup partition configuration data to determine if a conflict is present;

using current partition configuration data to restore configuration data for a partition in the set of partitions if a conflict is present and data if the partition is defined as an affinity partition in the current partition configuration data; and

using backup partition configuration data to restore the image of configuration information for the partition if a conflict is present and if the partition in defined as a normal partition in the current partition configuration data and in the backup partition configuration data; and

using the backup partition configuration data to restore the image of configuration information of the partition if a conflict is present and if the partition defined as normal in the backup partition configuration data is undefined or defined as normal in the current partition configuration data.

8. A data processing system for recovering an image of partition configuration information data for a set of partitions having at least one affinity partition, the data processing system comprising:

detecting means for detecting damage to an image of partition configuration data;

comparing means for comparing current partition data with a backup partition data; and

performing means for performing a merger of the current partition configuration data with the backup logical partition data if a conflict is present between the current partition configuration data and the backup partition data, wherein merger is performed in a manner avoiding stopping an operation on a running partition in the set of partitions.

9. The data processing system of claim 8, wherein the performing means comprises:

first using means for using current partition configuration data for a partition in the set of partitions to restore the image of configuration data if the partition is defined as an affinity partition in the current logical partition data; and

second using means for using backup partition configuration data to restore the image of configuration information for the partition if the partition in defined as a normal partition in the current partition configuration data and in the backup partition configuration data; and

third using means for using the backup partition configuration data to restore the image of configuration information of the partition if the partition defined as normal in the backup partition configuration data is undefined or defined as normal in the current partition configuration data.

10. The data processing system of claim 8, wherein the current logical partition data is stored in a non-volatile memory.

11. The data processing system of claim 8, wherein the backup logical partition data is stored in a backup image created by a user previously storing logical partition data.

12. The data processing system of claim 8, wherein the current logical partition data is stored in a mirror image.

13. The data processing system of claim 8 further comprising:

using means for using the backup partition configuration data if a conflict is absent.

14. A data processing system for recovering an image of partition configuration information for a set of partitions, the data processing system comprising:

comparing means for comparing current partition configuration data with a backup partition configuration data to determine if a conflict is present;

first using means for using current partition configuration data to restore configuration data for a partition in the set of partitions if a conflict is present and data if the partition is defined as an affinity partition in the current partition configuration data; and

second using means for using backup partition configuration data to restore the image of configuration information for the partition if a conflict is present and if the partition in defined as a normal partition in the current partition configuration data and in the backup partition configuration data; and

third using means for using the backup partition configuration data to restore the image of configuration information of the partition if a conflict is present and if the partition defined as normal in the backup partition configuration data is undefined or defined as normal in the current partition configuration data.

15. A data processing system for recovering an image of partition configuration information data for a set of partitions having at least one affinity partition, the data processing system comprising:

a bus system;

a memory connected to the bus system, wherein the memory includes a set of instructions;

a processing unit connected to the bus system, wherein the bus system executes the set of instructions to detect damage to an image of partition configuration data;

compare current partition data with a backup partition data when the damage is detected; and

perform a merger of the current partition configuration data with the backup logical partition data if a conflict is present between the current partition configuration data and the backup partition data, wherein merger is performed in a manner avoiding stopping an operation on a running partition in the set of partitions.

16. A data processing system for recovering an image of partition configuration information for a set of partitions, the data processing system comprising:

a bus system;

a memory connected to the bus system, wherein the memory includes a set of instructions;

a processing unit connected to the bus system, wherein the bus system executes the set of instructions to compare current partition configuration data with a backup partition configuration data to determine if a conflict is present;

use current partition configuration data to restore configuration data for a partition in the set of partitions if a conflict is present and data if the partition is defined as an affinity partition in the current partition configuration data; and

use backup partition configuration data to restore the image of configuration information for the partition if a conflict is present and if the partition in defined as a normal partition in the current partition configuration data and in the backup partition configuration data; and

use the backup partition configuration data to restore the image of configuration information of the partition if a conflict is present and if the partition defined as normal in the backup partition configuration data is undefined or defined as normal in the current partition configuration data.

17. A computer program product in a computer readable medium for recovering an image of partition configuration information data for a set of partitions having at least one affinity partition, the computer program product comprising:

first instructions for detecting damage to an image of partition configuration data;

second instructions for comparing current partition data with a backup partition data; and

third instructions for performing a merger of the current partition configuration data with the backup logical partition data if a conflict is present between the current partition configuration data and the backup partition data, wherein merger is performed in a manner avoiding stopping an operation on a running partition in the set of partitions.

18. A computer program product in a computer readable medium for recovering an image of partition configuration information for a set of partitions, the method comprising:

first instructions for comparing current partition configuration data with a backup partition configuration data to determine if a conflict is present;

second instructions for using current partition configuration data to restore configuration data for a partition in the set of partitions if a conflict is present and data if the partition is defined as an affinity partition in the current partition configuration data; and

third instructions for using backup partition configuration data to restore the image of configuration information for the partition if a conflict is present and if the partition in defined as a normal partition in the current partition configuration data and in the backup partition configuration data; and

fourth instructions for using the backup partition configuration data to restore the image of configuration information of the partition if a conflict is present and if the partition defined as normal in the backup partition configuration data is undefined or defined as normal in the current partition configuration data.