在Oracle VM搭建Oracle RAC時，生成共享磁碟並掛到asm中步驟還是比較多的。記錄一下。 前提是已經在VM中已經安裝好了一個linux. 1. 我在這建立5個磁碟   cd C:\Program Files\Oracle\VirtualBox VBoxManage.exe createhd -filename D:\OracleVM\ASM\asm1.vdi -size 5120 -format VDI -variant Fixed VBoxManage.exe createhd -filename D:\OracleVM\ASM\asm2.vdi -size 5120 -format VDI -variant Fixed VBoxManage.exe createhd -filename D:\OracleVM\ASM\asm3.vdi -size 5120 -format VDI -variant Fixed VBoxManage.exe createhd -filename D:\OracleVM\ASM\asm4.vdi -size 5120 -format VDI -variant Fixed VBoxManage.exe createhd -filename D:\OracleVM\ASM\asm5.vdi -size 5120 -format VDI -variant Fixed 2. 在Oracle VM中附加進去。 這個VM也可以用命令，但不太好使。   Settings -> Storage->Controller:SATA ->Add Hard Disk 3. 更改成共享模式 VBoxManage.exe modifyhd D:\OracleVM\ASM\asm1.vdi --type shareable VBoxManage.exe modifyhd D:\OracleVM\ASM\asm2.vdi --type shareable VBoxManage.exe modifyhd D:\OracleVM\ASM\asm3.vdi --type shareable VBoxManage.exe modifyhd D:\OracleVM\ASM\asm4.vdi --type shareable VBoxManage.exe modifyhd D:\OracleVM\ASM\asm5.vdi --type shareable 4. 檢查下狀態      a. VBoxManage list vms     b. 進入linux系統   [[email protected] dev]# ls sd*    sda sda1 sda2 sdb sdc sdd sde sdf    //其中   sdb sdc sdd sde sdf 就是掛上的那5個盤 5. 來fdisk 磁碟。     依次:  fdisk sdb   fdisk sdc   fdisk sdd    fdisk sde    fdisk sdf     附了個例子:   [[email protected] dev]# fdisk sdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0x1f132726. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable. Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) WARNING: DOS-compatible mode is deprecated. It's strongly recommended to          switch off the mode (command 'c') and change display units to          sectors (command 'u'). Command (m for help): p Disk sdb: 5368 MB, 5368709120 bytes 255 heads, 63 sectors/track, 652 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x1f132726 Device Boot Start End Blocks Id System Command (m for help): n Command action    e extended    p primary partition (1-4) p Partition number (1-4): 1 First cylinder (1-652, default 1): Using default value 1 Last cylinder, +cylinders or +size{K,M,G} (1-652, default 652): Using default value 652 Command (m for help): p Disk sdb: 5368 MB, 5368709120 bytes 255 heads, 63 sectors/track, 652 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x1f132726 Device Boot Start End Blocks Id System   sdb1 1 652 5237158+ 83 Linux Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. [

[email protected] dev]# ls sd* sda sda1 sda2 sdb sdb1 sdc sdd sde sdf 最後的結果: [[email protected] dev]# ls sd* sda sda1 sda2 sdb sdb1 sdc sdc1 sdd sdd1 sde sde1 sdf sdf1 6. 依次建立asm磁碟  [[email protected] ~]# oracleasm createdisk DISK1 /dev/sdb1 Writing disk header: done Instantiating disk: done [

[email protected] ~]# oracleasm createdisk DISK2 /dev/sdc1 Writing disk header: done Instantiating disk: done [[email protected] ~]# oracleasm createdisk DISK3 /dev/sdd1 Writing disk header: done Instantiating disk: done [[email protected] ~]# oracleasm createdisk DISK4 /dev/sde1 Writing disk header: done Instantiating disk: done [

[email protected] ~]# oracleasm createdisk DISK5 /dev/sdf1 Writing disk header: done Instantiating disk: done 7. 檢查下效果  [[email protected] ~]# oracleasm listdisks DISK1 DISK2 DISK3 DISK4 DISK5 8. 讓oracleasm把磁碟給找出來 [[email protected] ~]# oracleasm scandisks Reloading disk partitions: done Cleaning any stale ASM disks... Scanning system for ASM disks... 9.配置asm 磁碟的管理使用者 [[email protected] Packages]# oracleasm configure -i Configuring the Oracle ASM library driver. Default user to own the driver interface []: oracle Default group to own the driver interface []: dba [[email protected] Packages]# oracleasm configure ORACLEASM_ENABLED=true ORACLEASM_UID=oracle ORACLEASM_GID=dba ORACLEASM_SCANBOOT=true ORACLEASM_SCANORDER="" ORACLEASM_SCANEXCLUDE="" ORACLEASM_USE_LOGICAL_BLOCK_SIZE="false"     至此，這個Linux的asm就掛載成功了。 剩下的工作就是把這個OS再Clone一下。然後你就會發現。這些磁碟都能被兩個OS找到並使用了。 就可以放心裝RAC了。    C:\Program Files\Oracle\VirtualBox>VBoxManage.exe clonehd D:\OracleVM\OLE_RAC1\O
LE_RAC1.vdi D:\OracleVM\OLE_RAC2\OLE_RAC2.vdi
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
Clone hard disk created in format 'VDI'. UUID: c7f39d05-98b8-426f-8897-16a8e39ea
34f

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