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1、题目名称：基于SDL的分布式文件服务系统的设计题目性质：设计类学院：软件学院学校：中国科学技术大学学生姓名：时兆洋学号：SG11225013指导教师：刘业基于SDL的分布式文件服务系统的设计时兆洋(中国科学技术大学软件学院,苏州252123)BasedontheSDLdistributedfileservicesystemdesignZhaoyangShi(Departmentofsoftwareengeering,USTC,Suzhou252123,China)Abstract：WiththedevelopmentofInte
2、rnet,thestorageandretrievesofmagnanimousdatafromInternethasbecometheprimaryloadofmanynetworkservices.Thebackendfileserverwilleasilybetheperformancebottleneckofwholesystemwhendataflowandtheread/writerequestfromInternetgrowquickly.Butthetraditionalfilesystemsaredifficu
3、lttomeettheperformancerequirementofmagnanimousdata.So,weneedtodevelopaspecificfilesystemwhichcansupportthemagnanimousfileswell.Thispaperintroducesthedesignandimplementationofdistributedfilesystemwhichadoptsthestructureofonemetadataservermanagingthestoringnodes.TheDFS
4、shieldsthedetailofresourcelocating,loadbalancing,distributedstorage,distributedtransactionmanagement,datamigrationanddataconsistency.Itprovidesuniformprogramminginterfacetouser.Thissystemimplementsthefunctionswhichsatisfyalltherequirementsofthewebenvironmentbythecoop
5、erationofmetadataserveranddistributedstorenodes.Themeta-dataservermanagestheglobalinformation,resourcelocating,datamigrationandloadbalancing.Italsomanagesallthebackendstoringnodes.Themetadataserverprovidesglobalsupporttodistributedstorage,anddistributedtransaction.Wi
6、ththemanagementofthemetadataserver,Thesystemoffersthefilesysteminterfacetheupload,read,updateanddeletefunctions.Distributedtransactionprocessingofdistributedsystemfilesupportstwophasecommitprotocol.Faulttolerancemechanismisusedtoprocessthefailureandexception.Thesyste
7、maimstoachieveshighperformanceforstorageandretrievesofmagnanimousdata,aswellasscalable.Thestorageandcomputingcapabilitycanbeeasilyextended.Thissystemdesignedinthispaperwillbeagoodbackendsystemforlargenetworkapplications.Keyword:distributedfilesystem,magnanimousdata,d
8、istributedstorage,loadbalancing,distributedtransaction,dataconsistence摘要:随着互联网迅速发展，对互联网海量数据的存储和读取成为诸多网络应用系统的重要负载。当文件个数，读取需求急剧增加时容易导
