随着全球信息化时代的到来
信息数据越来越成为企业关注的焦点
即在各种自然灾害或者人为破坏的情况下
如何保证生产数据的安全和关键业务的不中断运行
传统的保护方法离线备份
备份介质异地保存在一定程度上可以解决上述问题
但为了能够对业务系统提供更高的实时性和可靠性
保证关键业务
x
不中断
应对激烈的市场竞争和提高客户满意度
企业必须在IT系统围绕
连续
(BC)主题进行构建
实施业务连续/容灾备份计划
包括业务连续性
高可用性管理
容灾
数据复制和恢复方案
安全等
下面就对数据复制技术做一个简单的介绍
根据数据复制运行的位置可以将数据复制方式分为以下四种
基于存储(StorageBased)代表厂商有EMC SRDFIBM PPRC/GDPS HP BusinessCopyHDS TrueCopy等特点对主机透明对应用系统的影响较小技术成熟有较多的成功案例但是投资较大对网络连接的要求也较高
基于服务器(Hostbased)代表厂商主要是Symantec公司的Veritas Volume Replicator (VVR)是存储卷的复制技术需要占用主机一定的系统资源
基于存储交换机(SANBased)运行于挂接在存储网络上的专用设备中代表厂商有CISCO的SANTapFalconStor IPStorTopio SANsafeDataCore SANsymphony Asynchronous Internet Mirroring (AIM)等
基于数据库/软件应用 :代表厂商有Oracle DataGuardQuest SharePlexIBMDB的远程Q复制SYBASE的复制服务器(Replication Server) 等这些技术都是对数据逻辑操作的复制属于逻辑数据复制而其它种复制的是数据卷中的数据变化属于物理数据复制典型的逻辑数据复制是通过数据库日志实现的优点是硬件投资小对生产系统的影响比较小对主备用系统的硬件平台没有选择性;可以在广域网范围内使用但它对数据库系统有严格的要求并且主备用系统必须使用相同的数据库版本
上面介绍的主要的各厂商方案和产品可以参见下图
本文主要介绍基于主机和逻辑卷的数据复制VVR
VERITAS的VVR(Veritas Volume Replicator)是用于有效的灾难恢复的数据复制软件可以连续对应用数据进行一个或者多个的拷贝保护具有的优点主要有高性能距离不限支持异构的存储和操作系统对数据的连续保护支持同步和异步复制
VVR系统架构如下图
VVR具有的系统特性如下
() 最高支持个远程节点可以通过基于IP的LAN或者WAN网络;
() 通过对逻辑卷的同步和异步复制模式保证数据的完整性和一致性;
() 确保备用节点和主节点的数据具有相同的写入顺序;
() 支持对网络带宽的管理和定义支持多链路的连接;
() 支持对备用节点的脱机操作以便在备用节点进行查询(例如DSS决策支持系统)或者数据备份;
() 易管理同时支持命令行和图形界面(VEA);
() 主备节点之间支持多种异构存储;
() 支持不同操作系统平台之间的复制;(注在本文中因为设计到Oracle数据库的复制所以主备操作系统必须同一类型比如必须都是Solaris平台版本完全相同的Oracle版本)
() 支持主流关系数据库系统包括OracleDBSybase和Informix数据文件的存放格式包括逻辑卷(裸设备)或者文件系统;
() 支持共享的集群环境中的逻辑卷复制比如Oracle RAC (Real Application Clusters) (注本文中采用的是单节点Oracle复制);
() 支持Veritas volume set;
() 支持PDC (Portable Data Container)环境的数据复制;
VVR数据复制系统主要由下面五个组件组成
■ Replicated Volume Group (RVG) 复制卷组
RVG是位于VxVM 磁盘组(DG)内的一组逻辑卷RVG隶属于磁盘组的一部分通过定义这些逻辑卷
应用对逻辑卷的写操作都可以保持以主节点上同样的顺序来写到备用节点上
对于多数数据库系统来说都是由一些特定的进程完成对磁盘的写操作比如Oracle系统中的LOWR
和DBWR进程而这些写操作总是依照着一定顺序从而来保证实例恢复中数据的一致和完整比如
数据库变化通常在写入日志文件后才会写入数据文件所以当日志文件和数据文件属于要复制的不同
逻辑卷的时候它们必须被定义到同一组RVG中
每组RVG最多可以包括个数据卷
下面介绍SRL和RLINK它们也包括在RVG中
■ Storage Replicator Log (SRL)
SRL用于记录RVG中数据写操作的日志并循环被使用每个RVG包括一个SRL数据在写入RVG中的卷之前首先要写到主节点的SRL中
从VxVM的角度来看SRL是一个单独的卷因为所有的写操作首先要写到SRL中这个卷需要有较好的写性能所以多数情况下需要对这个卷进行条带化并且在不同的盘上mirror以保护数据同时数据卷和SRL卷最好分布在不同的物理磁盘上以得到更好的性能
不允许人工直接对SRL进行访问
■ Replication Link—RLINK
用于连接主RVG和备用RVG之间的一个链接一个主的RVG最多可以有个RLINK可以定义RLINK
的多个属性来调整数据复制的参数比如指定复制的网络
■ Data Change Map (DCM)
■ Replicated Data Set (RDS)
一个RDS包括了所有的主节点和备用节点的复制卷组(RVG)RDS不是一个具体存在的对象而是一个VVR复制技术中的一个概念
在异步模式下VVR的数据复制和数据流向
在同步模式下VVR的数据复制和数据流向
另外VVR是Veritas Volume Manager (VxVM)的一个单独的option需要单独的license
Veritas Volume Replicator 的安装
主备节点硬件和软件配置和版本如下
主节点 机器名lxsfrac
Sun Microsystems Sun Fire X Server
操作系统 solarisu x_
VVR版本: Veritas Volume Replicator GA
Oracle 版本 Oracle gR Enterprise Edition
磁盘阵列SAN/ HDS AMS
Public网卡eg 私有(复制)网卡eg
备用节点机器名lxsfrac
软硬件环境与主节点相同
两个节点分别安装VVR和vxfs安装方法相同以lxsfrac为例
放入安装介质一般Solaris都由vold进程自动mount CD
如果需要手工
mountmount–Fhsfs–oro/dev/dsk/ctds/cdrom
root@lxsfrac#cd/volume_replicator/
root@lxsfrac#ls
copyrightdocsinstallvvrpkgsrelease_notesscriptstoolsuninstallvvr
root@lxsfrac#lsl
total
rwrrrootrootDeccopyright
drwxrwxrxrootrootJun:docs
rwxrxrxrootrootAprinstallvvr
drwxrwxrxrootrootJun:pkgs
drwxrwxrxrootrootJun:release_notes
drwxrwxrxrootrootJun:scripts
drwxrwxrxrootrootJun:tools
rwxrxrxrootrootApruninstallvvr
root@lxsfrac#/installvvrlxsfrac
VeritasVolumeReplicatorInstallationProgram
Copyright(c)SymantecCorporationAllrightsreservedSymantectheSymantecLogoaretrademarksorregisteredtrademarksofSymantecCorporationoritsaffiliatesintheUSandothercountriesOthernamesmaybetrademarksoftheirrespectiveowners
TheLicensedSoftwareandDocumentationaredeemedtobecommercialcomputersoftwareandcommercialcomputersoftwaredocumentationasdefinedinFARSectionsandDFARSSection
Logsforinstallvvrarebeingcreatedin/var/tmp/installvvrmrkY
Initialsystemcheck:
CheckingVVRinstallationonlxsfracnotinstalled
Checkingarchitectureonlxsfraci
VeritasVolumeReplicatorInstallationProgram
Checkingsystemlicensing
Installinglicensingpackages
VVRisnotlicensedonlxsfrac
EnteraVVRlicensekeyforlxsfrac:******************
******************successfullyregisteredonlxsfrac
PermanentVVRlicenseregisteredonlxsfrac
Doyouwanttoenteranotherlicensekeyforlxsfrac?[ynq](n)
VeritasVolumeReplicatorInstallationProgram
Checkinginstalledpackagesonlxsfrac
VeritasVolumeReplicatorInstallationProgram
VVRcanbeinstalledwithoutoptionalpackagestoconservediskspace
Additionalpackagesaretypicallyinstalledtosimplifyfutureupgrades
)RequiredVeritasVolumeReplicatorpackagesMBrequired
)AllVeritasVolumeReplicatorpackagesMBrequired
)StorageFoundationEnterprisepackagesMBrequired
Selectthepackagestobeinstalledonallsystems?[q?]()
VeritasVolumeReplicatorInstallationProgram
ThefollowingVVRpackageswillbeinstalled:
VRTSperlVeritasPerlRedistribution
VRTSvlicVeritasLicensing
VRTSicscoSymantecCommonInfrastructure
VRTSpbxSymantecPrivateBranchExchange
VRTSsmfSymantecServiceManagementFramework
VRTSatSymantecProductAuthenticationService
VRTSobcVeritasEnterpriseAdministratorCoreService
VRTSobVeritasEnterpriseAdministratorService
VRTSobguiVeritasEnterpriseAdministrator
VRTSccgVeritasEnterpriseAdministratorCentralControlGrid
VRTSmhVeritasStorageFoundationManagedHostbySymantec
VRTSaaVeritasEnterpriseAdministratorActionAgent
VRTSsptVeritasSoftwareSupportTools
SYMClmaSymantecLicenseInventoryAgent
VRTSvxvmVeritasVolumeManagerBinaries
VRTSdsaVeritasDatacenterStorageAgent
VRTSfsproVeritasFileSystemManagementServicesProvider
VRTSvmmanVeritasVolumeManagerManualPages
VRTSvmdocVeritasVolumeManagerDocumentation
Press[Return]tocontinue:
ntinued:
VRTSdcliVeritasDistributedCommandLineInterface
VRTSallocVeritasVolumeManagerIntelligentStorageProvisioning
VRTSvmproVeritasVolumeManagerManagementServicesProvider
VRTSddlprVeritasDeviceDiscoveryLayerServicesProvider
VRTSvrproVeritasVolumeReplicatorClientExtensionandProviderfor
VeritasEnterpriseAdministrator
VRTSvcsvrVeritasClusterServerAgentsforVVR
VRTSjreVeritasJavaRuntimeEnvironmentRedistribution
VRTSjreVeritasJavaRuntimeEnvironmentRedistribution
VRTSwebVeritasJavaWebServer
VRTSvrwVeritasVolumeReplicatorWebConsole
VRTSvrdocVeritasVolumeReplicatorDocumentation
Press[Return]tocontinue:
CheckingforanyAPdriverissuesonlxsfracNone
AcopyofapreviousVxVMconfigurationispresentonthesystemlxsfrac
DoyouwanttorestoreandreusethepreviousVxVMconfigurationofsystemlxsfrac[ynq?](y)n
VeritasVolumeReplicatorInstallationProgram
InstallingVVR:%■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
Installationcompletedsuccessfullyonallsystems
ItisoptionaltoconfigureVVRnowIfyouchoosetoconfigureVVRlateryoucaneitherdosomanuallyorruntheinstallvvrconfigurecommandTheproductinstallationscriptscanbefoundin/opt/VRTS/installdirectory
AreyoureadytoconfigureVVR?[ynq](y)
TheenclosurebasednamingschemeisafeatureofVeritasVolumeManagerItallowsonetoreferencedisksusingasymbolicnamethatismoremeaningfulthantheoperatingsystemsnormaldeviceaccessnameThissymbolicnameistypicallyderivedfromthearrayname
Doyouwanttosetuptheenclosurebasednamingscheme?[ynq?](n)y
VeritasVolumeReplicatorInstallationProgram
VeritasVolumeManagerdefaultdiskgroupnameconfiguration:
ManyVeritasVolumeManagercommandsaffectthecontentsorconfigurationofadiskgroupSuchcommandsrequirethattheuserspecifyadiskgroupThisisaccomplishedbyusingthegoptionofacommandorsettingtheVXVM_DEFAULTDGenvironmentvariableAnalternativetothesetwomethodsforsomecommandsistoconfigurethenameofthedefaultdiskgroupofasystem
Note:ThedefaultdiskgroupfeatureisnotavailablewiththeDCLIvxadm(M)andvxquery(M)commandsWhenusingthesecommandsarequireddiskgroupmustbeexplicitlyidentifiedusingthegoption
Doyouwanttosetupadefaultdiskgroupforeachsystem?[ynq?](y)n
VeritasVolumeReplicatorInstallationProgram
FollowingarethedefaultportsthatwillbeusedbyVVRonlxsfrac:
PortforVVRheartbeatcommunication:
Portforvradminddaemon:
Portforvxrsyncddaemon:
Portsfordatareplication:AnonymousPorts
TheportsindicatedforVVRheartbeatsandvradmindareIANAassigned
TheportsettingsshouldbeidenticalforsystemsthatwillbepartofthesameReplicatedDataSetTheyshouldalsobeidenticalforallthesystemsinacluster
DoyouwanttochangeanyoftheVVRportsonlxsfrac?[ynq](n)
VeritasVolumeReplicatorInstallationProgram
VVRStatisticsCollectionTool
TheVVRadministrativedaemonvradmindcancollectandmaintainvarious
statisticswhicharehelpfulinsolvingVVRperformanceissuesThis
collectioncanbetunedusingafewtunableslikethefrequencyfor
gatheringthestatisticsandthenumberofdaysforwhichthecollected
statisticsshouldbepreservedafterwhichtheearlierstatisticsare
automaticallydeleted
ThefrequencyofVVRstatisticscollectiononlxsfracissettoperseconds
DoyouwanttochangethefrequencyofVVRstatisticscollectiononlxsfrac?[ynq](n)
ThemaximumnumberofdaysforwhichVVRstatisticscanberetainedissettoonlxsfrac
DoyouwanttochangethemaximumnumberofdaysforretainingVVRstatisticsonlxsfrac?[ynq](n)
VeritasVolumeReplicatorInstallationProgram
ConfigurationofVVRtunables(Fortheadvanceduser)
DoyouwanttoviewormodifyVVRtunablesonlxsfrac?[ynq?](n)
VeritasVolumeReplicatorInstallationProgram
VerifytheinstallsystemsFullyQualifiedHostnames
Queryingfullyqualifieddomainnameofhostlxsfracfail
Press[Return]tocontinue:
UnabletofindFQHNforlxsfrac!
EnterthefullyqualifiedhostnameoflxsfracorQUITtoquitinstall
Enterthefullyqualifiedhostname:lxsfrac
VeritasVolumeReplicatorInstallationProgram
Choosehowthisinstallwillbemanaged
Thisproductcanconfiguredoneofthetwofollowingways:
*StorageFoundationManagementServermanagedhost(Recommended)
*Standalonehost
PrerequisitesforStorageFoundationManagementServermanagedhost:
*AStorageFoundationManagementServer(SFMS)isconfigured
*SFMSshouldbecurrentlyrunningandfullyoperational
*AuthenticationBrokerthatisusedbySFMSshouldberunning
Thefollowinginformationwouldberequestedduringconfiguration:
*ThehostnameoftheSFMS
*PreviouslysetSFMSagentaccountpassword
Therearenoprerequisitesfordeployingasastandalonehost
EnablingStorageFoundationManagementServermanagementsimplifiesandimprovesmanagementofthecomplexdatacenter
resourcesreducingplannedandunplanneddowntime
EnableStorageFoundationManagementServerManagement?[ynq](y)n
VeritasVolumeReplicatorInstallationProgram
VerifytheinstallsystemsFullyQualifiedHostnames
ConfiguringVEAinSTANDALONEmodeonlxsfracok
Configuringgridnodeonlxsfracok
Registeringgridnodeonlxsfracok
Configuringactionagentonlxsfracok
Registeringactionagentonlxsfracok
RegisteringStorageAgentonlxsfracok
DoyouwanttostartVeritasVolumeReplicatorprocessesnow?[ynq](y)
VeritasVolumeReplicatorInstallationProgram
StartingVVR:%■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
Startupcompletedsuccessfullyonallsystems
Youdeclinedtosetupthenameofthedefaultdiskgroupforlxsfrac
Installationlogfilessummaryfileandresponsefilearesavedat:
/opt/VRTS/install/logs/installvvrmrkY
ToenableDynamicMultiPathing(DMP)MPxIOmustbedisabledRefertotheStorageFoundationReleaseNotesforfurtherdetailsondisablingMPxIO
检查vradmindeamon
root@lxsfrac#psef|grepvrad|grepvgrep
root::?:/usr/sbin/vradmind
安装VeritasFileSystem安装过程略
root@lxsfrac#cdfile_system/
root@lxsfrac#lsl
total
rwrrrootrootDeccopyright
drwxrwxrxrootrootJun:docs
rwxrxrxrootrootAprinstallfs
drwxrwxrxrootrootJun:pkgs
drwxrwxrxrootrootJun:release_notes
drwxrwxrxrootrootJun:scripts
rwxrxrxrootrootApruninstallfs
root@lxsfrac#/installfslxsfrac
Veritas Volume Replicator VVR的配置
两个节点上都需要做
修改两个节点的/etc/hosts
lxsfrac
lxsfrac
lxsfracpriv
lxsfracpriv
分别创建私有网络(专有)建议数据复制使用专用网络
root@lxsfrac # ifconfig eg plumb netmask up
root@lxsfrac # ifconfig eg plumb netmask up
root@lxsfrac # ping
is alive
创建相同名称的磁盘组(含有最少两个磁盘)相同名称数据卷oravol创建复制日志卷(SRL)
分别在本地安装Oracle gR(安装Oracle过程略)
root@lxsfrac # vxdg init oradg AMS_WMS_ AMS_WMS_
root@lxsfrac # vxassist g oradg make oravol g
root@lxsfrac # vxedit g oradg set user=oracle group=dba mode= oravol
root@lxsfrac # vxassist g oradg make srl m
在备用节点上修改配置文件/etc/vx/vras/rdg让其包含主节点上的disk group ID
(这里是lxsfrac)当创建备用RVG时这个文件用来对主节点的授权
可以通过vxprint –l来得到disk group ID
root@lxsfrac # vi /etc/vx/vras/rdg
………
lxsfrac
/etc/vx/vras/rdg lines characters
在主节点上
创建vxfs文件系统
mount F vxfs o largefiles /dev/vx/dsk/oradg/oravol /oracle
chown oracle:dba /oracle
切换到oracle用户使用dbca建库并且所有数据文件选择/oracle目录
创建Primary RVG
root@lxsfrac # vradmin g oradg createpri ora_rvg oravol srl
其中的oravol是要复制的数据卷列表当多于一个时用逗号隔开
创建Secondary RVG
root@lxsfrac # vradmin g oradg addsec ora_rvg lxsfracpriv lxsfracpriv
设置复制方式为异步
root@lxsfrac # vradmin g oradg set ora_rvg lxsfracpriv synchronous=off
开始复制
root@lxsfrac#vradmingoradgastartrepora_rvg
MessagefromPrimary:
VxVMVVRvxrlinkWARNINGVAttachingrlinktononemptyrvgAutosyncwillbeperformed
VxVMVVRvxrlinkINFOVSecondarydatavolumesdetectedwithrvgora_rvgasparent:
VxVMVVRvxrlinkINFOVoravol:len=primary_datavol=oravol
VxVMVVRvxrlinkINFOVAutosyncoperationhasstarted
root@lxsfrac#
root@lxsfrac#vradmingoradgfstartrepora_rvg
VxVMVVRvradminINFOVReplicationtoSecondaryhostlxsfracprivalreadystarted
检查相关信息和状态显示数据复制过程可以通过使用i参数指定interval
root@lxsfrac#vxrvggoradggetrlinksora_rvg
rlk_lxsfracpriv_ora_rvg
root@lxsfrac#vxrlinkgoradgstatusrlk_lxsfracpriv_ora_rvg
FriNov::
VxVMVVRvxrlinkINFOVRlinkrlk_lxsfracpriv_ora_rvgisinAUTOSYNCKbytesremaining
root@lxsfrac#vxrlinkgoradgstatusrlk_lxsfracpriv_ora_rvg
FriNov::
VxVMVVRvxrlinkINFOVRlinkrlk_lxsfracpriv_ora_rvgisinAUTOSYNCKbytesremaining
root@lxsfrac#vxrlinkgoradgstatusrlk_lxsfracpriv_ora_rvg
FriNov::
VxVMVVRvxrlinkINFOVRlinkrlk_lxsfracpriv_ora_rvgisinAUTOSYNCKbytesremaining
root@lxsfrac#vxrlinkgoradgstatusrlk_lxsfracpriv_ora_rvg
FriNov::
VxVMVVRvxrlinkINFOVRlinkrlk_lxsfracpriv_ora_rvgisuptodate
可以手工进行gracefully切换
root@lxsfrac#umount/oracle
root@lxsfrac#vradmingoradgmigrateora_rvglxsfracpriv
VxVMVVRvradminWARNINGVMakesureapplicationsusingPrimarydatavolumesarestopped
vradmin:Continuewithmigrate(y/n)?y
root@lxsfrac#
下面我们就在上面搭建好的VVR环境中对容灾数据进行切换测试
注在下面测试中主节点为lxsfrac备用节点为lxsfrac
======================================显示主备节点状态=================================
root@lxsfrac#vradmingoradglrepstatusora_rvg
ReplicatedDataSet:ora_rvg
Primary:
Hostname:lxsfracpriv
RVGname:ora_rvg
DGname:oradg
RVGstate:enabledforI/O
Datavolumes:
VSets:
SRLname:srl
SRLsize:M
Totalsecondaries:
Secondary:
Hostname:lxsfracpriv
RVGname:ora_rvg
DGname:oradg
RlinkfromPrimary:rlk_lxsfracpriv_ora_rvg
RlinktoPrimary:rlk_lxsfracpriv_ora_rvg
Configuredmode:asynchronous
Latencyprotection:off
SRLprotection:autodcm
Datastatus:inconsistent
Replicationstatus:resyncinprogress(autosync)
Currentmode:asynchronous
Loggingto:DCM(containsKbytes)(autosync)
TimestampInformation:N/A
BandwidthLimit:N/A
====================================显示replicationlink状态=================================
root@lxsfrac#vxrlinkgoradgstatusrlk_lxsfracpriv_ora_rvg
MonNov::
VxVMVVRvxrlinkINFOVRlinkrlk_lxsfracpriv_ora_rvgisuptodate
====================================在主节点插入试验数据:================================
oracle@lxsfrac$sysdba
SQL*Plus:ReleaseProductiononMonNov::
Copyright(c)OracleAllrightsreserved
Connectedto:
OracleDatabasegEnterpriseEditionReleaseProduction
WiththePartitioningOLAPandDataMiningoptions
SQL>createtabletest(avarchar())tablespaceusers;
Tablecreated
SQL>insertintotestvalues();
rowcreated
SQL>commit;
Commitcomplete
SQL>insertintotestvalues();
rowcreated
SQL>
SQL>
SQL>commit;
Commitcomplete
======================================立即异常关闭oracle和操作系统============================
root@lxsfrac#psef|egrepora_|asm_|grepvgrep|grepvcrs|awk{print$}|xargskill
root@lxsfrac#
root@lxsfrac#psef|grepora
root::?:/opt/VRTSobc/pal/bin/vxpalaStorageAgentx
oracle::?:oracleracg(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oracle::pts/:bash
oracle::pts/:sqlplus/assysdba
root::pts/:grepora
root@lxsfrac#
root@lxsfrac#poweroff
从系统日志/var/tmp/messages可以查看到相关信息
Nov::lxsfracpoweroff:[IDauthcrit]poweroffedbyroot
=======================================在备用节点进行接管=======================================
root@lxsfrac#vradmingoradgmigrateora_rvglxsfracpriv
VxVMVVRvradminWARNINGVMakesureapplicationsusingPrimarydatavolumesarestopped
vradmin:Continuewithmigrate(y/n)?y
MessagefromHostlxsfracpriv:
VxVMVVRvradminERRORVSecondaryora_rvgdoesnothaveanactivePrimary
root@lxsfrac#
root@lxsfrac#vradmingoradgtakeoverora_rvg
root@lxsfrac#date
MonNov::CST
root@lxsfrac#vxprinthtqgoradg
dgoradgdefaultdefaultlxsfrac
dmAMS_WMS_AMS_WMS_auto
dmAMS_WMS_AMS_WMS_auto
rvora_rvgENABLEDACTIVEprimarysrl
rlrlk_lxsfracpriv_ora_rvgora_rvgENABLEDACTIVElxsfracprivoradgrlk_lxsfracpriv_ora_rvg
voravolora_rvgENABLEDACTIVESELECTfsgen
ploravoloravolENABLEDACTIVECONCATRW
sdAMS_WMS_oravolAMS_WMS_AMS_WMS_ENA
ploravoloravolENABLEDACTIVELOGONLYCONCATRW
sdAMS_WMS_oravolAMS_WMS_LOGAMS_WMS_ENA
ploravoloravolENABLEDACTIVELOGONLYCONCATRW
sdAMS_WMS_oravolAMS_WMS_LOGAMS_WMS_ENA
vsrlora_rvgENABLEDACTIVESELECTSRL
plsrlsrlENABLEDACTIVECONCATRW
sdAMS_WMS_srlAMS_WMS_AMS_WMS_ENA
root@lxsfrac#
================================启动备用节点Oracle数据库并检查数据完整========================
root@lxsfrac#mountFvxfs/dev/vx/dsk/oradg/oravol/oracle
root@lxsfrac#
root@lxsfrac#suoracle
SunMicrosystemsIncSunOSGenericJanuary
oracle@lxsfrac$sysdba
SQL*Plus:ReleaseProductiononMonNov::
Copyright(c)OracleAllrightsreserved
Connectedtoanidleinstance
SQL>startup
ORACLEinstancestarted
TotalSystemGlobalAreabytes
FixedSizebytes
VariableSizebytes
DatabaseBuffersbytes
RedoBuffersbytes
Databasemounted
Databaseopened
SQL>select*fromtest;
A
================================ 显示数据正常 ===========================
在第二个节点vxdg import oradg
然后recover
直到两个节点vxprint htqg oradg都正常ENABLED/ACTIVE
错误V我遇到了两次一次是在createpri一次在addsec原因是主备的DCM默认都需要mirror所以所在的磁盘组都最少包括两块磁盘(或LUN)通过vxdg g oradg adddisk another_disk解决
root@lxsfrac # vradmin g oradg createpri ora_rvg \ >systemsysauxtempusersexamplectlfilectlfilectlfileredoredoredoundospfile\
>srl
MessagefromPrimary:
VxVMvxassistERRORVCannotallocatespaceforblocklog
root@lxsfrac#vradmingoradgaddsecora_rvglxsfracprivlxsfracpriv
MessagefromHostlxsfracpriv:
VxVMvxassistERRORVCannotallocatespaceforblocklog
检查vvr后台进程
root@lxsfrac#psef|grepvrad|grepvgrep
root::?:/usr/sbin/vradmind
如果进程状态不对使用下面语句来手工启动
/etc/initd/vrasvradmindshstart
可以看到vradmin是随系统自启动的
root@lxsfrac#find/etc/rc*name*vr*print
/etc/rcd/Kvrasvradmind
/etc/rcd/Kvrasvradmind
/etc/rcd/Svradmind
/etc/rcSd/Kvrasvradmind
