基于虚拟机的快速故障恢复技术的研究

发布时间：2018-05-11 22:16

本文选题：故障恢复 + 虚拟化　；参考：《哈尔滨工业大学》2013年硕士论文

【摘要】：随着网络信息产业的发展，服务器的工作效率和可靠性的要求越来越高，集群技术和云计算技术随之诞生并开始蓬勃发展，虚拟化技术作为实现云计算的关键技术也越来越被关注。在虚拟化环境中,一台物理机上创建若干虚拟机,彼此的操作系统相互隔离,独立完成自己的业务。既保证了系统独立性，又提高了资源的利用率，虚拟化技术开始被企业广泛应用。随着虚拟化技术应用的普及,如何提高虚拟机的可靠性成为人们不得不面对的重要问题。容错技术是提高系统高可用的有效手段，故障恢复技术是容错技术的重要研究内容。本文以提高服务器可用性为目标，对在虚拟机上实现故障恢复技术进行研究，，实现一种基于虚拟机的故障恢复工具集。当服务器发生故障时迅速进行故障恢复，使其恢复至正常工作状态，减小故障对服务器的影响。本文首先介绍了课题的研究背景，相关技术的国内外的现状。之后分析了主要故障恢复技术的原理和优缺点，虚拟机系统的基本原理和关键技术,包括Xen虚拟机的实现、实时迁移技术、虚拟机备份技术。然后描述了基于虚拟机的故障恢复工具集vfrt的功能目标，概要设计，模块构成。最后文章详细说明了整个系统的流程，各个模块的详细设计，应用技术和使用的算法。故障恢复工具集vfrt对已有的虚拟机热备算法进行了改进，实现一种定时同步与事件触发同步相结合的双机热备算法，提高了热备的效率与灵活性，降低了开销。vfrt在实现故障恢复的过程中考虑服务器的负载均衡，运行效率等因素，为提高服务器可用性提供可靠的服务。
[Abstract]:With the development of network information industry, the demands of working efficiency and reliability of servers are higher and higher. Cluster technology and cloud computing technology are born and flourish. As a key technology to realize cloud computing, virtualization technology has been paid more and more attention. In a virtualized environment, a physical machine creates a number of virtual machines, each operating system isolated from each other, independently accomplishing its own business. It not only guarantees the independence of system, but also improves the utilization of resources. Virtualization technology has been widely used by enterprises. With the popularization of virtualization technology, how to improve the reliability of virtual machine becomes an important problem that people have to face. Fault-tolerant technology is an effective means to improve the high availability of the system. Fault recovery technology is an important research content of fault-tolerant technology. Aiming at improving server availability, this paper studies the implementation of fault recovery technology on virtual machine, and implements a fault recovery tool set based on virtual machine. When the server fails, the fault recovery is carried out quickly to restore the server to the normal working state, and the influence of the fault on the server is reduced. This paper first introduces the research background, related technologies at home and abroad. Then it analyzes the principle, advantages and disadvantages of the main fault recovery technology, the basic principles and key technologies of the virtual machine system, including the implementation of the Xen virtual machine, real-time migration technology, virtual machine backup technology. Then it describes the function goal, outline design and module composition of the fault recovery tool set (vfrt) based on virtual machine. In the end, the flow of the whole system, the detailed design of each module, the application technology and the algorithm are described in detail. The fault recovery tool set (vfrt) has improved the existing hot-standby algorithm of virtual machine and realized a dual-machine hot-standby algorithm combining timing synchronization and event trigger synchronization, which improves the efficiency and flexibility of hot-standby. The cost of .vfrt is reduced by taking into account the load balancing and running efficiency of the server in the process of fault recovery, which provides reliable service for improving server availability.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP302.8

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