面向虚拟化系统的故障注入工具设计与实现

摘要

To solve the problem that the existing fault injectors fail to test specific faults of virtual system,an architecture of fault injector for virtual system was presented.The architecture was composed of virtual machine manager,virtual machine nodes and the front-end,the test script defined by Xml was passed and parsed through the front-end,to make virtual machine manager access the fault injection information,then each kind of fault was injected into virtual machine nodes according to the information,and a fault injection process was completed.Based on this architecture,a fault injector was implemented on Xen virtual system and fault injection experiments were carried out.Results show that faults can be injected effectively,and the evaluation of reliability and fault tolerance is achieved.%为解决现有故障注入工具缺乏对虚拟化系统特有故障进行测试的问题,提出一种面向虚拟化系统的故障注入工具架构.架构由虚拟机管理器、各虚拟机节点和前端部分组成,Xml定义的测试脚本通过前端部分传入并解析,使得虚拟机管理器获取故障注入信息后,根据信息将各类故障注入到虚拟机节点中,完成一次故障注入过程.以该架构为基础,在Xen虚拟化系统上实现故障注入工具并进行故障注入实验,实验结果表明,利用该工具可以对Xen系统进行有效故障注入并完成可靠性和容错性评测.