支持IP-SAN远程映射与引导的固件协议栈  

Firmware protocol stack supporting remote boot and storage volumes mapping in IP-SAN

作　　者：谭怀亮[1] 尹斌[1] 

机构地区：[1]湖南大学计算机与通信学院,湖南长沙410082

出　　处：《通信学报》2009年第10期58-67,共10页Journal on Communications

基　　金：国家重点基础研究发展计划("973"计划)基金资助项目(2007CB310900);国家自然科学基金资助项目(60603053);湖南省自然科学基金资助项目(07JJ6139);博士点基金资助项目(200805321029)~~

摘　　要：设计了一种基于IP存储区域网络的远程引导技术,该技术的核心是运行在裸机下的固件协议栈。针对固件协议栈运行特性,提出了一种非路由iSCSI/TCP通信协议原型,并实现了基于固件的iSCSI/TCP协议。同时提出了几种优化算法以提升远程引导性能与可靠性,包括乐观预测、固定回避重传算法和避免协议栈重入的输出请求挂起策略。建立了一种便于操作系统内核iSCSI启动器平滑接管的固件iSCSI启动器有限状态模型。通过将固件协议栈集成到IP-SAN扩展BIOS中,并应用于无本地存储设备的主机上,实现了基于IP-SAN的网络引导,测试结果表明该固件协议栈有很好的性能和可靠性,并且部署、移动和重新分配主机与存储卷之间的映射关系变得更加便利。A new remote boot technology based on IP storage area network was designed, and the core technology of it is the firmware protocol stack running under bare machine platform. A non-routing iSCSI/TCP protocol prototype was proposed and implemented based on firmware.At the same time, several optimization algorithms were introduced to enhance the performance and reliability of remote boot, including optimistic forecast, fixed avoiding retransmit algorithm and output request suspend strategy that solved the problem of reentry. A firmware iSCSI initiator finite state machine model was established which can be easily taken over by kernel mode initiator. Then the firmware protocol stack was integrated into IP-SAN extension BIOS, applied to client host with no local storage devices, and achieves network boot based on IP-SAN. Test results show it has very good performance and reliabrity. Deployment, movement and re-distribution of relations between host and storages become more easily.

关 键 词：ISCSI TCP IP—SAN存储区域网络 固件 远程引导 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]