FAULT RECOVERY ROUTINE GENERATING DEVICE, FAULT RECOVERY ROUTINE GENERATING METHOD, AND RECORDING MEDIUM

• US 20160062857A1
• Filed: 01/23/2014
• Published: 03/03/2016
• Est. Priority Date: 04/17/2013
• Status: Abandoned Application

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: TADANO, KUMIKO
• Application Number:
  US14/779,389
• Publication Number:
  US 20160062857A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 11/0706 the processing taking place on a specific hardware platform or in a specific software environment
• CPC Class Codes: G06F 11/0793 Remedial or corrective actions recovery from an exception in an instruction pipeline G06F9/3861; by retry G06F11/1402; for recovering from a failure of a protocol instance or entity H04L69/40
• CPC Class Codes: G06F 11/2033 switching over of hardware resources
• CPC Class Codes: G06F 2201/805 Real-time

Abstract

A fault recovery routine generating device includes a subroutine storage unit which stores subroutines, a precondition storage unit which sores a precondition, a fault combination acceptance unit which accepts a combination of faults that have occurred in components of an information system, a subroutine specification unit which identifies subroutines required for recovery of the components, a fault recovery routine generating unit which acquires the identified subroutines from the subroutine storage unit and links the subroutines to generate a candidate fault recovery routine which is a routine for recovering the information system, a fault recovery time estimation unit which estimates the time required for fault recovery by the candidate fault recovery routine, and a fault recovery routine output unit which outputs the candidate fault recovery routine whose fault recovery time is less than or equal to predetermined time as a fault recovery routine.

Claims

1-8. -8. (canceled)

9. A fault recovery routine generating device comprising circuitry configured to:

store subroutines which are routines for recovering failed components;

store a precondition representing a condition required for executing the subroutines;

accept a combination of faults that have occurred in components of an information system;

identify subroutines required for recovering the components on the basis of the precondition and the combination of faults that have occurred in the components;

acquire the identified subroutines from the stored subroutine and links the identified subroutines to generate a candidate fault recovery routine which is a routine for recovering the information system;

estimate the time required for fault recovery by the candidate fault recovery routine; and

output the candidate fault recovery routine whose fault recovery time is less than or equal to predetermined time as a fault recovery routine.

10. The fault recovery routine generating device according to claim 9, wherein the precondition comprises a prerequisite subroutine which is a subroutine that needs to be executed before execution of a subroutine, and

in the identifying subroutines, the circuitry is further configured to

identify a subroutine for recovering the failed components;

and

use the prerequisite subroutine to identify a subroutine that needs to be executed before execution of the identified subroutines.

11. The fault recovery routine generating device according to claim 10,

wherein the precondition comprises a prerequisite state which is a component state required for executing the subroutines;

and

in the identifying subroutines, the circuitry is configured to use the prerequisite state to identify a component state required for executing the identified subroutines.

12. The fault recovery routine generating device according to claim 11,

wherein the precondition comprises a produced state which is a component state produced as a result of execution of each of the subroutines;

and

in the identifying subroutines, the circuitry is configured to use the produced state to identify a subroutine required for producing the identified component state.

13. The fault recovery routine generating device according to claim 9, the circuitry is further configured to:

accept an available resource among resources included in the information system; and

identify a component to be recovered from a combination of faults that have occurred in components on the basis of the available resource and predetermined priorities.

14. The fault recovery routine generating device according to claim 10, the circuitry is further configured to:

accept an available resource among resources included in the information system; and

identify a component to be recovered from a combination of faults that have occurred in components on the basis of the available resource and predetermined priorities.

15. The fault recovery routine generating device according to claim 11, the circuitry is further configured to:

accept an available resource among resources included in the information system; and

identify a component to be recovered from a combination of faults that have occurred in components on the basis of the available resource and predetermined priorities.

16. The fault recovery routine generating device according to claim 12, the circuitry is further configured to:

accept an available resource among resources included in the information system; and

identify a component to be recovered from a combination of faults that have occurred in components on the basis of the available resource and predetermined priorities.

17. The fault recovery routine generating device according claim 9, the circuitry is further configured to

accept the number of available operators,

in the generating a candidate fault recovery routine, generate the candidate fault recovery routine in which a number of subroutines executed in parallel is less than or equal to the number of the operators.

18. The fault recovery routine generating device according to claim 10, the circuitry further configured to

accept the number of available operators,

in the generating a candidate fault recovery routine, generate the candidate fault recovery routine in which a number of subroutines executed in parallel is less than or equal to the number of the operators.

19. The fault recovery routine generating device according to claim 11, the circuitry further configured to

accept the number of available operators,

in the generating a candidate fault recovery routine, generate the candidate fault recovery routine in which a number of subroutines executed in parallel is less than or equal to the number of the operators.

20. The fault recovery routine generating device according to claim 12, the circuitry further configured to

accept the number of available operators,

in the generating a candidate fault recovery routine, generate the candidate fault recovery routine in which a number of subroutines executed in parallel is less than or equal to the number of the operators.

21. The fault recovery routine generating device according to claim 13, the circuitry further configured to

accept the number of available operators,

in the generating a candidate fault recovery routine, generate the candidate fault recovery routine in which a number of subroutines executed in parallel is less than or equal to the number of the operators.

22. A fault recovery routine generating method comprises processing of:

storing subroutines which are routines for recovering components;

storing a precondition representing a condition required for executing the subroutines;

accepting a combination of faults that have occurred in components of an information system;

identifying subroutines required for recovering the components on the basis of the precondition and the combination of faults that have occurred in the components;

acquiring the identified subroutines from among the stored subroutines and linking the identified subroutines to generate a candidate fault recovery routine which is a routine for recovering the information system;

estimating the time required for fault recovery by the candidate fault recovery routine; and

outputting the candidate fault recovery routine whose fault recovery time is less than or equal to predetermined time as a fault recovery routine.

23. A non-transitory computer readable medium that stores therein a program causing a computer to execute processes of:

storing subroutines which are routines for recovering components;

storing a precondition representing a condition required for executing the subroutines;

accepting a combination of faults that have occurred in components of an information system;

identifying subroutines required for recovering the components on the basis of the precondition and the combination of faults that have occurred in the components;

acquiring the identified subroutines from among the stored subroutines and linking the identified subroutines to generate a candidate fault recovery routine which is a routine for recovering the information system;

estimating the time required for fault recovery by the candidate fault recovery routine; and

outputting the candidate fault recovery routine whose fault recovery time is less than or equal to predetermined time as a fault recovery routine.