Part 1 : Install The ASMLib Drivers

Cheking The Kernel Version

[root@vasm ~]# uname -a
Linux vasm 2.6.32-200.13.1.el5uek #1 SMP Wed Jul 27 21:02:33 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux

Installing the ASMLib Drivers

[root@vasm ~]# rpm -Uvh oracleasm-support-2.1.8-1.el5.x86_64.rpm oracleasmlib-2.0.4-1.el5.x86_64.rpm oracleasm-2.6.18-274.el5-2.0.5-1.el5.x86_64.rpm 
warning: oracleasm-support-2.1.8-1.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing...                ########################################### [100%]
   1:oracleasm-support      ########################################### [ 33%]
   2:oracleasm-2.6.18-274.el########################################### [ 67%]
   3:oracleasmlib           ########################################### [100%]

Part 2 : Configure ASMLib

Configure ASMLib

Once ASMLib is installed we can execute it’s executable ‘oracleasm’ located at /etc/init.d, it will return a list of available commands.

[root@vasm ~]# /etc/init.d/oracleasm 
Usage: /etc/init.d/oracleasm {start|stop|restart|enable|disable|configure|createdisk|deletedisk|querydisk|listdisks|scandisks|status}

ASMLib configure command

[root@vasm ~]# /etc/init.d/oracleasm configure
Configuring the Oracle ASM library driver.

This will configure the on-boot properties of the Oracle ASM library
driver.  The following questions will determine whether the driver is
loaded on boot and what permissions it will have.  The current values
will be shown in brackets ('[]').  Hitting <ENTER> without typing an
answer will keep that current value.  Ctrl-C will abort.

Default user to own the driver interface []: oracle
Default group to own the driver interface []: oinstall
Start Oracle ASM library driver on boot (y/n) [n]: y
Scan for Oracle ASM disks on boot (y/n) [y]: y
Writing Oracle ASM library driver configuration: done
Initializing the Oracle ASMLib driver:                     [  OK  ]
Scanning the system for Oracle ASMLib disks:               [  OK  ]

[root@vasm ~]# /etc/init.d/oracleasm status
Checking if ASM is loaded: yes
Checking if /dev/oracleasm is mounted: yes

We have a set of 16 LUN’s ready, we will create 4 ASM disks on LUN’s sdb1,sdc1,sdd1 and sde1

[root@vasm ~]# /etc/init.d/