一种基于pNFS协议的对象文件系统的设计与实现  

Design and Implementation of an Object-based File System According to pNFS Protocol

作　　者：李洪昌[1] 舒继武[1] 

机构地区：[1]清华大学计算机科学与技术系,北京100084

出　　处：《小型微型计算机系统》2012年第11期2336-2340,共5页Journal of Chinese Computer Systems

基　　金：国家"八六三"高技术研究发展计划项目(2009AA01A403)资助

摘　　要：随着存储规模的持续增长,SAN环境中基于块的集群文件系统的元数据服务越来越成为系统进一步扩展的瓶颈,基于对象存储设备(OSD)的文件系统成为未来大规模分布式文件系统发展的方向.Linux已有的基于OSD的pNFS文件系统为pNFS+exofs的解决方案,它将文件系统的元数据与数据都保存在OSD上.提出一种新的基于pNFS协议的对象文件系统的实现方案,将元数据和数据的保存和服务分离,文件系统的元数据保存在本地文件系统中,数据保存在OSD设备上.相比已有的pNFS+exofs的方案,该方案的实现和部署更加灵活方便,同时减轻了OSD模拟器的读写负载,有利于元数据和数据存储和服务的单独扩展.With the continuous growth of the scale of storage system,the scalability of block-based cluster file system in SAN environment is limited by performance of metadata service,thus file systems based on Object Storage Devices（OSD） are regarded as the developing direction of future large-scale distributed file systems.pNFS＋exofs,the existing solution based on OSD in Linux,stores both files＇ data and metadata into OSDs.This paper presents a new implementation solution of object-based file system according to pNFS protocol,in which files＇ metadata are stored in a local file system while data are in the OSDs,and thus the store and service of data and metadata are both separated.Compared with existing pNFS＋exofs,this solution is easier and more flexible to implement and deploy,and is helpful to lighten the access workload of OSD and independently extend on store and service of both data and metadata.

关 键 词：OSD pNFS exofs 对象文件系统 

分 类 号：TP334[自动化与计算机技术—计算机系统结构]