A Remote Backup Approach for Virtual Machine Images

2016 IEEE 3rd International Conference on Cyber Security and Cloud Computing (CSCloud) Pub Date : 2016-06-25 DOI:10.1109/CSCloud.2016.41

Zhe Wang, Jin Zeng, Tao Lv, Bin Shi, B. Li

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引用次数: 1

Abstract

Recent years witness the successful application of Cloud computing. Virtualization plays a key role in cloud computing and greatly facilitates application deployment and migration. Tenants' applications are hosted by virtual machines. The security and safety of user applications receive much attention from academia and industry. However, fault tolerance and availability issues of cloud applications are overlooked. In this paper, we focus on the high availability issue of virtual machines. We propose a remote backup approach, named LiveRB, for saving the running states of virtual machines in an online manner. The backup process operates in background and is transparent to the applications hosted in virtual machines. Live migration technique is used to save the running states of virtual machines. A virtual block device is designed to cache I/O operations in memory and save incremental virtual disk data of the virtual machine to a remote server. We implement LiveRB on KVM virtualization platform. We evaluate the effectiveness and efficiency of LiveRB through comprehensive experiments. The results show that LiveRB can lively backup a virtual machine to a remote server with only slight performance penalty.

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虚拟机映像的远程备份方法

近年来，云计算的应用取得了成功。虚拟化在云计算中起着关键作用，极大地促进了应用程序的部署和迁移。租户的应用程序由虚拟机托管。用户应用程序的安全性受到学术界和工业界的广泛关注。然而，云应用程序的容错和可用性问题却被忽视了。在本文中，我们主要关注虚拟机的高可用性问题。我们提出了一种名为LiveRB的远程备份方法，以在线方式保存虚拟机的运行状态。备份过程在后台运行，对托管在虚拟机中的应用程序是透明的。动态迁移技术用于保存虚拟机的运行状态。虚拟块设备用于在内存中缓存I/O操作，并将虚拟机的增量虚拟磁盘数据保存到远程服务器。我们在KVM虚拟化平台上实现LiveRB。我们通过综合实验来评估LiveRB的有效性和效率。结果表明，LiveRB可以将虚拟机实时备份到远程服务器，而性能损失很小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 IEEE 3rd International Conference on Cyber Security and Cloud Computing (CSCloud)

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