Software fault tolerance method facing cloud platform

Abstract

The invention discloses a software fault tolerance method facing cloud platform. The method comprises the following steps: testing stress of software to be protected to obtain rescue point of the software; periodically constructing software check points in a virtual machine to determine whether a fault exists in the software; acquiring software fault related information if the fault exists; judging whether the fault is stack overflow fault according to the software fault related information; judging whether function call stack information matching the fault exists in a loophole rescue table if the fault is stack overflow fault; extracting the function stack information if the function call stack information matching the fault exists in a loophole rescue table; rolling the software back to a check point closest to the fault; acquiring candidate rescue points according to the function call stack information; and testing the candidate rescue points according to weight of the candidate rescue points to obtain the optimum rescue point with fault tolerance. The soft fault tolerance method provided by the invention can effectively improve the fault tolerant capability of software, and can lower data redundancy caused by the fault tolerance mechanism.

Description

technical field [0001] The invention belongs to the technical field of software reliability, in particular, the invention relates to a cloud platform-oriented software fault tolerance method. Background technique [0002] As an emerging IT infrastructure, cloud computing provides convenient, flexible, on-demand configuration, and low-cost various types of network services including computing, storage, and applications for Internet users or internal enterprise users. When the cloud platform provides diversified services for users, it also faces the challenge of ensuring high availability of service software. Once the cloud service fails, if the corresponding protection measures are not taken, the consequences and economic losses will be immeasurable. [0003] Although software development processes and methods have been studied for decades, so far, there is still no reliable way to ensure that complex software systems are free from failures. In fact, it is impossible to ens...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to propose a cloud platform-oriented software fault tolerance method, which balances the versatility and overhead of the fault tolerance mechanism by combining the idea of ​​weighting and the idea of ​​dynamically changing the software execution process, and solves the fault tolerance mechanism. In order to solve the problem of high overhead, and aiming at the characteristics of cloud computing, a three-level fault-tolerant shared database method is adopted to realize the fault information sharing between the same software instances, which effectively improves the fault-tolerant capability of the software and reduces the fault caused by the fault-tolerant mechanism Data redundancy, and fault repair logs are also convenient for programmers to repair bugs

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