问题：oracleasm status不能启动
解决方案：
[root@localhost ~]# oracleasm status
Checking if ASM is loaded: no
Checking if /dev/oracleasm is mounted: no
[root@localhost ~]# oracleasm exit
[root@localhost ~]# oracleasm init
Creating /dev/oracleasm mount point: /dev/oracleasm
Loading module "oracleasm": oracleasm
Mounting ASMlib driver filesystem: /dev/oracleasm
[root@localhost ~]# oracleasm status
Checking if ASM is loaded: yes
Checking if /dev/oracleasm is mounted: yes
一。手工搞定安装
1. 检查是否已安装及系统内核
--查看内核
[root@xclrac1 /]# uname -rm
2.6.39-400.17.1.el6uek.x86_64 x86_6
--查看asm包
[root@xclrac1 /]# rpm -qa|grep asm
libatasmart-0.17-4.el6_2.x86_64
[root@xclrac1 /]#
[root@xclrac1 db2]# cat /proc/version
Linux version 2.6.39-400.17.1.el6uek.x86_64 (mockbuild@ca-build44.us.oracle.com) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-3) (GCC) ) #1 SMP Fri Feb 22 18:16:18 PST 2013
[root@xclrac1 ~]# cat /etc/issue
Oracle Linux Server release 6.4
Kernel
on an m
2. 去官网找到相应系统对应的asm下载安装.
以前Oracle Linux 5 如下:
--安装ASM, support->asm-> lib放最后
rpm -Uvh oracleasm-support-2.1.7-1.el5.x86_64.rpm
rpm -Uvh oracleasm-2.6.18-194.el5-2.0.5-1.el5.x86_64.rpm
rpm -Uvh oracleasmlib-2.0.4-1.el5.x86_64.rpm
现在Oracle 6.4就不需这么麻烦:
2.1 去系统光盘找到asmlib support的安装包(rpm -Uvh oracleasm-support-2.1.8-1.el6.x86_64.rpm)装上
2.2 去Oracle官网，下载Oracle Linux 6 对应的asmlib.rpm包并装上
2.3 重新查看
[root@xclrac1 db2]# rpm -qa|grep asm
oracleasmlib-2.0.4-1.el6.x86_64
libatasmart-0.17-4.el6_2.x86_64
3. 安装成功后，通过 oracleasm命令检查并管理asmlib
[root@xclrac1 /]# oracleasm status
Checking if ASM is loaded: yes
Checking if /dev/oracleasm is mounted: yes
[root@xclrac1 ~]# oracleasm update-driver
二。yum快速搞定安装
http://www.oracle.com/technetwork/server-storage/linux/uln-095759.html
Getting Oracle ASMLib via the Unbreakable Linux Network
Installing ASMLib via ULN
Now that the system is registered with ULN, it can install the software. Log in as root and run:
# yum install oracleasm-support oracleasmlib oracleasm-`uname -r`
On Oracle Linux 5 and older, run the following command instead:
# up2date -i oracleasm-support oracleasmlib oracleasm-`uname -r`
This will install the support tools, the library, and the kernel driver for the currently running kernel.
Note: If you are running the Unbreakable kernel, the ASMLib kernel driver is included in that kernel package, and the oracleasm-`uname -r` package should not be specified.
安装成功后。就可以.配置和管理asm 磁盘了。
1. 我在这创建5个磁盘
cd C:Program FilesOracleVirtualBox
VBoxManage.exe createhd -filename D:OracleVMASMasm1.vdi -size 5120 -format VDI -variant Fixed
VBoxManage.exe createhd -filename D:OracleVMASMasm2.vdi -size 5120 -format VDI -variant Fixed
VBoxManage.exe createhd -filename D:OracleVMASMasm3.vdi -size 5120 -format VDI -variant Fixed
VBoxManage.exe createhd -filename D:OracleVMASMasm4.vdi -size 5120 -format VDI -variant Fixed
VBoxManage.exe createhd -filename D:OracleVMASMasm5.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:OracleVMASMasm1.vdi --type shareable
VBoxManage.exe modifyhd D:OracleVMASMasm2.vdi --type shareable
VBoxManage.exe modifyhd D:OracleVMASMasm3.vdi --type shareable
VBoxManage.exe modifyhd D:OracleVMASMasm4.vdi --type shareable
VBoxManage.exe modifyhd D:OracleVMASMasm5.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 FilesOracleVirtualBox>VBoxManage.exe clonehd D:OracleVMOLE_RAC1O
LE_RAC1.vdi D:OracleVMOLE_RAC2OLE_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
LE_RAC1.vdi D:OracleVMOLE_RAC2OLE_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