基于虚拟机的透明计算设备子系统设计及实现  

Design and implementation of device sub-system of transparent computing system based on machine virtualization

作　　者：徐广斌[1] 韦理[1] 周悦芝[1] 陶然[2] 

机构地区：[1]清华大学计算机科学与技术系,北京100084 [2]武汉大学计算机学院,武汉430072

出　　处：《计算机应用研究》2008年第8期2550-2553,共4页Application Research of Computers

基　　金：国家“863”计划资助项目(2005AA114160)

摘　　要：为解决在现有透明计算系统中磁盘等设备的虚拟化,需要对操作系统进行修改才能在端计算机上运行的问题,提出透明计算系统中一种基于虚拟机技术的设备子系统。以IntelVT硬件级虚拟支持和Xen虚拟化技术为基础,在全虚拟化的虚拟机上运行用户操作系统:通过运行在管理域用户空间中设备模型的虚拟磁盘和网络驱动,将用户域访问磁盘和网络的I/O请求跨网络地重定向到服务器进行处理,从而实现端计算机上多操作系统的远程运行。在VT硬件平台和Xen虚拟机监控器上实现了原型系统,验证了该方法的可行性。To host an operating system on client devices in a transparent system, the operating system needs to be modified to support device I/O redirection to the server： corresponding virtualized device drivers must be ported to replace original drivers. Besides, this method was difficult to be implemented in an operating systems without open interfaces, such as Windows XP. This paper presented a virtualized machine-based device subsystem to solve this problem. By leveraging hardware-suppor- ted virtualization of Intel VT and full virtualization approach of Xen, the I/O requested to disk and network devices in the guest domain were redirected to the transparent computing server through presented virtual device drivers integrated into the service domain. As a result, operating systems could run in a transparent client device unmodified. It also implemented a prototype, which verified feasibility of the new method.

关 键 词：透明计算 设备模型 虚拟机 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]