vmware server 2上搭建RAC共享磁盘问题

主要有2点：

1.编辑各节点的.vmx文件，添加

disk.locking="false"                            #原因看这几个单词就能知道。如果不加，虚拟机各节点启动时将会对自己拥有的磁盘独占加锁，此时虚拟机目录下会生成一个文件夹，里面存放的.lck文件。删除此文件夹可以缓解一时。

2.编辑各节点的.vmx文件，添加scsi总线共享属性：

scsi[n].sharedBus="virtual"

意思是说，如果共享盘1是scsi1:0,共享盘2是scsi1:0,那么你只需要添加scsi1.sharedBus="virtual"即可，并且添加这条属性之后，scsi1:0.shared="TURE"这样更低一层的属性将会被忽略。

如果共享盘包含scsi1:1,scsi2:1,scsi3:1……，那么需要添加scsi1.sharedBus="virtual",scsi2.sharedBus="virtual",scsi3.sharedBus="virtual"……

PS.提醒，ocr和voting disk必须装在裸设备上。

且ocr为root所有，voting disk为oracle所有。

the configuration file in order to enable disk sharing:config.version = “8″
virtualHW.version = “4″
scsi0.present = “TRUE”
scsi0.virtualDev = “lsilogic”
memsize = “768″
scsi0:0.present = “TRUE”
scsi0:0.fileName = “rac1_localdisk.vmdk”
ide1:0.present = “TRUE”
ide1:0.fileName = “auto detect”
ide1:0.deviceType = “cdrom-raw”
floppy0.present = “FALSE”
Ethernet0.present = “TRUE”
displayName = “EL4_11gRAC1″
guestOS = “rhel4″
priority.grabbed = “normal”
priority.ungrabbed = “normal”
disk.locking = “FALSE”
diskLib.dataCacheMaxSize = “0″
diskLib.dataCacheMaxReadAheadSize = “0″
diskLib.dataCacheMinReadAheadSize = “0″
diskLib.dataCachePageSize = “0″
scsi1.sharedBus = “virtual”
scsi1.present = “TRUE”
scsi1:0.present = “TRUE”
scsi1:0.fileName = “E:\Virtual Machines\rac\rac11g\share\datadisk1.vmdk”
scsi1:0.mode = “independent-persistent”
scsi1:0.deviceType = “disk”
scsi1:1.present = “TRUE”
scsi1:1.fileName = “E:\Virtual Machines\rac\rac11g\share\datadisk2.vmdk”
scsi1:1.mode = “independent-persistent”
scsi1:1.deviceType = “disk”
scsi1:2.present = “TRUE”
scsi1:2.fileName = “E:\Virtual Machines\rac\rac11g\share\datadisk3.vmdk”
scsi1:2.mode = “independent-persistent”
scsi1:2.deviceType = “disk”
scsi1:3.present = “TRUE”
scsi1:3.fileName = “E:\Virtual Machines\rac\rac11g\share\ocrdisk.vmdk”
scsi1:3.mode = “independent-persistent”
scsi1:3.deviceType = “disk”
scsi1:4.present = “TRUE”
scsi1:4.fileName = “E:\Virtual Machines\rac\rac11g\share\votingdisk.vmdk”
scsi1:4.mode = “independent-persistent”
scsi1:4.deviceType = “disk”
scsi1.virtualDev = “lsilogic”
ide1:0.autodetect = “TRUE”
Ethernet1.present = “TRUE”

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#SB vmware help文档里面说了，IndependentDisk不能受snapshot影响。

比较有价值的参考：

http://blog.chinaunix.net/uid-21234197-id-3033984.html

http://www.2cto.com/os/201205/130495.html

感谢这两位仁兄。