一种基于iSCSI协议的动态扩容机制  

Dynamic Capacity Expansion Mechanism Based on iSCSI Protocol

作　　者：田龙[1] 张延园[1] 张晓[1] 

机构地区：[1]西北工业大学计算机学院,陕西西安710129

出　　处：《微电子学与计算机》2011年第6期58-61,66,共5页Microelectronics & Computer

基　　金：国家"八六三"计划重大项目(2009AA01A404)

摘　　要：为了解决海量存储系统研究过程中PB级硬件需求过高的问题,实现了一种基于iSCSI协议的容量仿真技术,通过分析文件系统的格式,进一步提出了更具通用性的地址映射方案和动态扩容机制.目前iSCSI提供了远程存储机制,在此基础上使用一定大小的文件模拟磁盘,并对磁盘容量进行虚拟扩大和地址映射管理,实现了小文件到大磁盘的仿真,同时对动态地址映射方案下的动态扩容机制予以介绍.最后通过实验对虚拟磁盘和普通磁盘的性能进行了测试和对比,证明了该技术的可行性和正确性.In order to solve the problem of PB grade hardware demand in the mass storage system research process,a capacity simulation technology based on iSCSI protocol was proposed.Through the analysis of the file system format,a kind of more general mapping scheme and dynamic capacity mechanism were put forward further.At present,iSCSI provides a remote storage mechanism,on the basis of which we simulate disks using certain size files.The capacity are virtually enlarged and managed by address mapping,implementing the simulation from small files to large disks.At the same time,dynamic capacity expansion mechanism was introduced.At last,through experiments we test and analyze the performances between virtual disk and common disk,proving the feasibility and correctness of the technology.

关 键 词：容量仿真 ISCSI协议 地址映射 动态扩容 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]