To upgrade the second subcluster

1. Take the service groups offline on node03 and node04.

   Warning:

   Failure to perform this step can cause data corruption if you try to bring the failover groups (sg3 and sg4) online on the upgraded subcluster (node01 and node02)

   # hagrp -offline sg1 -sys node03
   # hagrp -offline sg1 -sys node04
   # hagrp -offline sg2 -sys node03
   # hagrp -offline sg2 -sys node04
   # hagrp -offline sg3 -sys node03
   # hagrp -offline sg4 -sys node04
   

2. Stop VCS and its components on node03 and node04.

   # /sbin/init.d/vcs stop
   # /sbin/init.d/vxfen stop
   # /sbin/gabconfig -U
   # /sbin/lltconfig -Uo

   Note:

   Your downtime starts from here.

3. Edit the following files on node03 and node04 to make the values of LLT_START, GAB_START and VXFEN_START equal to zero. (By default it is 1).

   #  /etc/rc.config.d/lltconf

   # /etc/rc.config.d/gabconf

   # /etc/rc.config.d/vxfenconf

   Performing this step prevents LLT, GAB, and VxFEN from restarting if the nodes reboot accidentally. If node03 and node04 reboot accidentally, it may cause node01 and node02 to panic.

4. Reboot node01 and node02.

5. On node01 and node02, start VCS and its components.

   # /sbin/init.d/llt start
   # /sbin/init.d/gab start
   # /sbin/gabconfig -cx
   # /sbin/init.d/vxfen start
   # /sbin/init.d/vcs start

6. Make the VCS configuration writable on node01 or node02. Note that you need to make the configuration writable because the installer froze the service groups during the upgrade.

   # haconf -makerw

7. Unfreeze all the service groups node01 and node02.

   # hagrp -unfreeze sg1 -persistent
   # hagrp -unfreeze sg2 -persistent
   # hagrp -unfreeze sg3 -persistent
   # hagrp -unfreeze sg4 -persistent

8. Dump the configuration and make it read-only.

   # haconf -dump -makero

   Note:

   Your downtime ends here.

9. On node01 and node02, bring the service groups online.

   # hagrp -online sg1 -sys node01
   # hagrp -online sg1 -sys node02
   # hagrp -online sg2 -sys node01
   # hagrp -online sg2 -sys node02
   # hagrp -online sg3 -sys node01
   # hagrp -online sg4 -sys node02

10. Verify the state of the service groups.

    # hagrp -state

    The output resembles the following:

    #Group 	Attribute 	System 		Value
    sg1 			State 					node01 		|ONLINE|
    sg1 			State 					node02 		|ONLINE|
    sg1 			State 					node03 		|OFFLINE|
    sg1 			State 					node04 		|OFFLINE|
    sg2 			State					 node01 		|ONLINE|
    sg2 			State 					node02 		|ONLINE|
    sg2 			State					 node03 		|OFFLINE|
    sg2 			State 					node04 		|OFFLINE|
    sg3 			State 					node01 		|ONLINE|
    sg3			 State 					node02		 |OFFLINE|
    sg3 			State 					node03 		|OFFLINE|
    sg3			 State 					node04		 |OFFLINE|
    sg4 			State 					node01 		|OFFLINE|
    sg4 			State					 node02 		|ONLINE|
    sg4 			State 					node03 		|OFFLINE|
    sg4 			State					 node04 		|OFFLINE|

11. Upgrade VCS on node03 and node04. Follow the procedure mentioned in the section for upgrading the first subcluster.

    See Upgrading the first subcluster.

12. After the upgrade completes, reboot node03 and node04.

    After you have rebooted the nodes, all the four nodes now run the latest version of VCS, which is 5.0.1.