Owner's Manual

58 Configuring Database Storage on the Host

Change the O2CB_HEARTBEAT_THRESHOLD value on all the nodes:

Stop the O2CB service on all the nodes by typing:

/etc/init.d/o2cb stop

Edit the O2CB_HEARTBEAT_THRESHOLD value in

/etc/sysconfig/o2cb

to 81 on all the nodes.

Start the O2CB service on all the nodes by typing:

/etc/init.d/o2cb start

On the

first node

, for a Fibre Channel cluster, create one partition on each

of the other two external storage devices using

fdisk

Create a primary partition for the entire device by typing:

fdisk /dev/emcpowerX

NOTE: Type h for help within the fdisk utility.

Verify that the new partition exists by typing:

cat /proc/partitions

If you do not observe the new partition, type:

sfdisk -R /dev/<device name>

NOTE: The following steps use the sample values:

• Mount points:

/u02,/u03

, and

/u04

• Labels:

u02,u03

and

u04

• Fibre Channel storage devices:

emcpowera, emcpowerb

, and

emcpowerc

any one node

, format the external storage devices with 4 K block size,

128 K cluster size, and 4 node slots by using the command line utility

mkfs.ocfs2

ocr.dbf and Voting Disk

mkfs.ocfs2-b 4K-C128K-N4-Lu01/dev/emcpowera1

Database Files

mkfs.ocfs2 -b 4K-C128K-N4-Lu02/dev/emcpowerb1

Flash Recovery Area

mkfs.ocfs2 -b 4K-C128K-N4-Lu03/dev/emcpowerc1

NOTE: Node slots refer to the number of cluster nodes.

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