Recovery of local resource

• US 10,733,065 B2
• Filed: 05/10/2018
• Issued: 08/04/2020
• Est. Priority Date: 12/22/2014
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Bohm, Fraser P., Li, Guo Q., Mitchell, Ian J., Wharmby, Andrew D.
• Primary Examiner(s): McCarthy, Christopher S
• Application Number:
  US15/976,372
• Publication Number:
  US 20180260288A1
• Time in Patent Office: 817 Days
• CPC Class Codes: G06F 11/1441 Resetting or repowering
• CPC Class Codes: G06F 11/1471 involving logging of persistent data for recovery
• CPC Class Codes: G06F 11/1474 in transactions G06F16/20 takes precedence
• CPC Class Codes: G06F 2201/86 Event-based monitoring
• CPC Class Codes: G06F 2201/87 Monitoring of transactions

Abstract

A method, system, and computer program product that includes a processor cataloging a current resource definition and a current transaction state for the resource. The processor recovers the resource and a transaction state for the resource after an emergency restart, by utilizing the current resource definition and the current transaction state, wherein the recovering comprises recovering transactions of the resource. The processor completes or backs out of the transactions. The processor closes the resource and the processor recovers the resource by utilizing a global catalog.

Claims

1. A computer-implemented method comprising:

locally cataloging, by a processor, a current resource definition and a current transaction state for a resource;

recovering, by the processor, by utilizing a local catalog of the resource, the resource and a transaction state for the resource after an emergency restart subsequent to one of an immediate shutdown or an abnormal shutdown of the resource, by utilizing the local current resource definition and the current local transaction state, wherein the recovering comprises recovering transactions of the resource;

based on the recovering, completing or backing out of, by the processor, the transactions;

closing, by the processor, the resource;

recovering, by the processor, the resource by utilizing a global catalog, wherein the recovering comprises obtaining a global current resource definition from the global catalog; and

replacing, by the processor, the local current resource definition with the global current resource definition.

2. The computer-implemented method of claim 1, wherein the transaction state is any type of resource data state that may be recovered by the processor.

3. The computer-implemented method of claim 1, further comprising:

indicating, by the processor, to a global controller that the resource is being recovered utilizing the current transaction state.

4. The computer-implemented method of claim 1, further comprising:

indicating, by the processor, to a global controller that the resource has been recovered utilizing the current transaction state.

5. The computer-implemented method of claim 1, further comprising:

indicating, by the processor, to a global controller that the transactions have been completed or backed out of.

6. The computer-implemented method of claim 1, wherein the recovering the resource by utilizing a global catalog comprises:

obtaining, by the processor, an indication that the resource has closed; and

based on the obtaining, recovering, by the processor, the resource by utilizing a global catalog.

7. The computer-implemented method of claim 1, further comprising:

recovering, by the processor, an additional resource by utilizing the global catalog in parallel with the recovering the resource and the transaction state by utilizing the current resource definition and the current transaction state.

8. The computer-implemented method of claim 1, the recovering the resource by utilizing a global catalog comprising:

obtaining, by the processor, an indicator associated with the resource; and

based on obtaining the indicator, recovering the resource by utilizing a global catalog.

9. The computer-implemented method of claim 1, wherein the closing the resource comprises:

verifying, by the processor, that the resource and the transaction state were recovered by utilizing the current resource definition and the current transaction state; and

based on the verifying, closing the resource.

10. The computer-implemented method of claim 1, further comprising:

obtaining, by the processor, an indication that the recovering the resource by utilizing the global catalog is complete; and

generating, by the processor, a message.

11. A computer program product comprising:

a computer readable storage medium readable by a processor and storing instructions for execution by the processor for performing a method comprising;

locally cataloging, by the processor, a current resource definition and a current transaction state for a resource;

recovering, by the processor, by utilizing a local catalog of the resource, the resource and a transaction state for the resource after an emergency restart subsequent to one of an immediate shutdown or an abnormal shutdown of the resource, by utilizing the local current resource definition and the local current transaction state, wherein the recovering comprises recovering transactions of the resource;

based on the recovering, completing or backing out of, by the processor, the transactions;

closing, by the processor, the resource;

recovering, by the processor, the resource by utilizing a global catalog, wherein the recovering comprises obtaining a global current resource definition from the global catalog; and

replacing, by the processor, the local current resource definition with the global current resource definition.

12. The computer program product of claim 11, wherein the transaction state is any type of resource data state that may be recovered by the processor.

13. The computer program product of claim 11, the method further comprising:

indicating, by the processor, to a global controller that the resource is being recovered utilizing the current transaction state.

14. The computer program product of claim 11, the method further comprising:

indicating, by the processor, to a global controller that the resource has been recovered utilizing the current transaction state.

15. The computer program product of claim 11, the method further comprising:

indicating, by the processor, to a global controller that the transactions have been completed or backed out of.

16. The computer program product of claim 11, wherein the recovering the resource by utilizing a global catalog comprises:

obtaining, by the processor, an indication that the resource has closed; and

based on the obtaining, recovering, by the processor, the resource by utilizing a global catalog.

17. The computer program product of claim 11, the method further comprising:

recovering, by the processor, an additional resource by utilizing the global catalog in parallel with the recovering the resource and the transaction state by utilizing the current resource definition and the current transaction state.

18. The computer program product of claim 11, the recovering the resource by utilizing a global catalog comprising:

obtaining, by the processor, an indicator associated with the resource; and

based on obtaining the indicator, recovering the resource by utilizing a global catalog.

19. A system comprising:

a memory;

a processor in communication with the memory; and

program instructions executable by the processor via the memory to perform a method, the method comprising;

locally cataloging, by a processor, a current resource definition and a current transaction state for a resource;

recovering, by the processor, by utilizing a local catalog of the resource, the resource and a transaction state for the resource after an emergency restart subsequent to one of an immediate shutdown or an abnormal shutdown of the resource, by utilizing the local current resource definition and the local current transaction state, wherein the recovering comprises recovering transactions of the resource;

based on the recovering, completing or backing out of, by the processor, the transactions;

closing, by the processor, the resource;

recovering, by the processor, the resource by utilizing a global catalog, wherein the recovering comprises obtaining a global current resource definition from the global catalog; and

replacing, by the processor, the local current resource definition with the global current resource definition.

20. The system of claim 19, wherein the transaction state is any type of resource data state that may be recovered by the processor.