Linux平臺(tái)數(shù)據(jù)容災(zāi)系統(tǒng)的研究與實(shí)現(xiàn).pdf

1、西北工業(yè)大學(xué)碩士學(xué)位論文Linux平臺(tái)數(shù)據(jù)容災(zāi)系統(tǒng)的研究與實(shí)現(xiàn)姓名：王彥龍申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：計(jì)算機(jī)軟件與理論指導(dǎo)教師：李戰(zhàn)懷20050101西北工業(yè)大學(xué)碩士學(xué)位論文AbstractConsideringthecurrentsituationofmostcompaniesandministrieswithoutdataprotectingmechanismthisthesispresentstheDataDisasterTolera

2、nceSystemonLinuxabbreviatedtoDDTbasedonresearchingthecurrentDisasterTolerancesystemsandrelatedtechnologies.ThethesisintroducesanddiscussesthebasicconceptsarchitectureandworkflowofDDTsystemandfocusesondescribingkeytechnol

3、ogiesincludingRemoteReplicationmechanismDisasterRecoverymechanismandSnapshotBackupmechanism.InadditionthethesisevaluatesDDTsystemintheoryandwithexperiments.ThekeytechnologieswhichareresearchedandimplementedinDDTsystemcan

4、besummarizedasfollowing:FirstModuleembeddingtechnology:DDTsystemembedstheRemoteReplicationmoduleintoLogicalVolumeManagerinLinuxkerneltobuildLogicalVolumeReplicatorwhichcaninterceptthewritingrequirementsandreplicatethemto

5、theSecondarysystem.ItalsoembedstheDisasterRecoverymoduleintoLVRtobuildDataDisasterTolerancesystemwhichcandealwithdisastersefectively.SecondaryRemoteReplicationmechanism:InordertokeeptheDataConsistencybetweenPrimarysystem

6、andSecondarysystemandthatinReplicationVolumeGroupandapplyindiferentenvironmentsDDTsystemsuppliesuserswiththreereplicationmodelsofSyncAsyncandSoftSyncanddesignsrelevanttransportationprotocolandJounalmechanismtoensurethatR

7、emoteRepicationcanworknormally.ThirdDisasterRecoverymechanism:systemimplementsInordertoimprovetheHighAvailabilityDDTDisasterOverstrategywhichselectsoneavailableSecondarysystemtofailuresordisastersoccurtothesystem.FullFas

8、tDisasterBackstrategywhichcantakeoverPrimarysystemwhenDDTsystemalsoputsforwardrecoveroriginalPrimarysystemaccordingtoSecondarysystemandreusePrimarysystemtoservetheusers.FourthSnapshotBackupmechanism:DDTsystemcanbackupdat