Oracle 11gR2 RAC installation: install and configure OCFS2

This post will describe how to install and configure OCFS2, the Oracle Cluster File System, a shared disk file system developed by Oracle Corporation and released under the GNU General Public License.
First of all download and install on both nodes the requested rpm files from the Oracle website: http://oss.oracle.com/projects/ocfs2/files/





Then run the console using the following command as root just from one node:
ocfs2console &




Then select Cluster->Configure Nodes... from menu


and the following window will appear


Press tha ADD button


And insert all details of your node (specifing the private IP address)


Again ADD button to add details for the second node


Click the APPLY button


The select Cluster->Propagate Configuration... from menu


Type YES and the root password when asked. When FINISHED! is showned, click on CLOSE button


Now from first node type:
/etc/init.d/o2cb configure

Answer Y to load O2CB driver on boot, then use default value for cluster name, then 61 as heartbeat dead threshold and then accept all default values.


The same steps for the second node


Now it's time to format, selecting Tasks->Format from menu


A list of available devices will appear. Use a Volume label and then press OK. I will setup TWO devices to share disks






First devices is formatted


Proceed with the second one








Quit OCFS2 console


Now on both nodes, run:
mkdir -p /u02/ocfs2/
mkdir -p /u02/ocfs2_mirror/
mount -t ocfs2 -o datavolume,nointr /dev/emcpowerb1 /u02/ocfs2/
mount -t ocfs2 -o datavolume,nointr /dev/emcpowerd1 /u02/ocfs2_mirror/
echo "/dev/emcpowerb1 /u02/ocfs2/ ocfs2 _netdev,datavolume,nointr 0 0" >> /etc/fstab
echo "/dev/emcpowerd1 /u02/ocfs2_mirror/ ocfs2 _netdev,datavolume,nointr 0 0" >> /etc/fstab
reboot