Windows虚拟磁盘与路径容错  

Virtual Disks and Fault Tolerant Paths in Windows

作　　者：谭毓安[1] 曹元大[1] 张雪兰[1] 王佐[1] 

机构地区：[1]北京理工大学信息科学技术学院计算机科学工程系,北京100081

出　　处：《北京理工大学学报》2005年第12期1057-1061,共5页Transactions of Beijing Institute of Technology

基　　金：国家部委预研项目(41325081)

摘　　要：为提高系统的可用性,在W indow s内核中加入冗余路径驱动程序实现路径容错功能.在W indow s环境下构造了虚拟总线及虚拟磁盘设备,使路径故障后虚拟设备不会被删除,保障了上层应用的持续运行.在同一个内核驱动程序中集成了总线驱动和磁盘过滤两种功能,节约了驱动程序占用的内核空间.通过加入虚拟磁盘,在保持W indow s即插即用功能及设备层次的同时实现了设备的持续性.A redundant path driver for Windows is implemented to tolerate the path failures and improve the system availability. Virtual bus device objects and disk device objects are registered and kept persistently even when the path fails, to prevent the upper applications from being interrupted. The bus device driver and disk filter driver is integrated to simplify the implementation and save the consumed kernel spaces. Through the introduction of virtual disks, the device persistency is achieved in the plug and play environment, and the storage hierarchical device tree is not changed.

关 键 词：容错 虚拟磁盘 总线驱动程序 过滤驱动程序 

分 类 号：TP302.8[自动化与计算机技术—计算机系统结构]