Oracle VM创建共享磁盘并挂ASM

       在Oracle VM搭建Oracle RAC时，生成共享磁盘并挂到asm中步骤还是比较多的。记录一下。

前提是已经在VM中已经安装好了一个linux.

1. 我在这创建5个磁盘

  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中附加进去。 这个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. 检查下状态 

    a. VBoxManage list vms

    b. 进入linux系统

  [root@rac1 dev]# ls sd*

   sda sda1 sda2 sdb sdc sdd sde sdf

   //其中   sdb sdc sdd sde sdf 就是挂上的那5个盘

5. 来fdisk 磁盘。

    依次:  fdisk sdb   fdisk sdc   fdisk sdd    fdisk sde    fdisk sdf 

   附了个例子:  

[root@rac1 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.

[root@rac1 dev]# ls sd*

sda sda1 sda2 sdb sdb1 sdc sdd sde sdf

最后的结果:

 

[root@rac1 dev]# ls sd*

sda sda1 sda2 sdb sdb1 sdc sdc1 sdd sdd1 sde sde1 sdf sdf1

6. 依次创建asm磁盘 

[root@xclrac1 ~]# oracleasm createdisk DISK1 /dev/sdb1

Writing disk header: done

Instantiating disk: done

[root@xclrac1 ~]# oracleasm createdisk DISK2 /dev/sdc1

Writing disk header: done

Instantiating disk: done

[root@xclrac1 ~]# oracleasm createdisk DISK3 /dev/sdd1

Writing disk header: done

Instantiating disk: done

[root@xclrac1 ~]# oracleasm createdisk DISK4 /dev/sde1

Writing disk header: done

Instantiating disk: done

[root@xclrac1 ~]# oracleasm createdisk DISK5 /dev/sdf1

Writing disk header: done

Instantiating disk: done

7. 检查下效果 

[root@xclrac1 ~]# oracleasm listdisks

DISK1

DISK2

DISK3

DISK4

DISK5

8. 让oracleasm把磁盘给找出来

[root@xclrac1 ~]# oracleasm scandisks

Reloading disk partitions: done

Cleaning any stale ASM disks...

Scanning system for ASM disks...

9.配置asm 磁盘的管理用户

[root@xclrac1 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

[root@xclrac1 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，这个Linux的asm就挂载成功了。 剩下的工作就是把这个OS再Clone一下。然后你就会发现。这些磁盘都能被两个OS找到并使用了。

就可以放心装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

   同时附上ORACLE ASM安装的详细步骤: <<搞定Linux下Oracle ASM的安装>>

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