< Previous  | TOC | Index | Next  >

Configuring LLT, GAB, VCSMM, and VXFEN drivers

 To configure LLT, GAB, VCSMM, and VXFEN drivers

1. Edit the file /etc/llthosts on the two existing systems. Using vi or another text editor, add the line for the new node to the file. The file should resemble:

   1 galaxy

   2 nebula

   3 saturn

2. Copy the /etc/llthosts file from one of the existing systems over to the new system. The /etc/llthosts file must be identical on all nodes in the cluster.
3. Create an /etc/llttab file on the new system. For example:

   set-node saturn

   set-cluster 101

   link en1 /dev/dlpi/en:1 - ether - -

   link en2 /dev/dlpi/en:2 - ether - -

   The second line, the cluster ID, must be the same as in the existing nodes.

4. Use vi or another text editor to create the file /etc/gabtab on the new system. It should resemble the following example:

   /sbin/gabconfig -c -nN

   Where N represents the number of systems in the cluster. For a three-system cluster, N would equal 3.

5. Edit the /etc/gabtab file on each of the existing systems, changing the content to match the file on the new system.
6. If you are adding the new node to a single node cluster, then fencing must be enabled and configured on the original node before proceeding tostep 7.

   See Setting up I/O fencing

7. Set up the /etc/vcsmmtab and /etc/vxfendg files on the new system by copying them from one of the other existing nodes:

   # rcp galaxy:/etc/vcsmmtab /etc

   # rcp galaxy:/etc/vxfendg /etc

8. Run the commands to start LLT and GAB on the new node:

   # /etc/init.d/llt.rc start

   # /etc/init.d/gab.rc start

9. On the new node, start the VXFEN, VCSMM, and LMX drivers. Remove the /etc/vxfenmode file to enable fencing. Use the commands in the order shown:

   # rm /etc/vxfenmode

   # /etc/init.d/vxfen start

   # /etc/init.d/vcsmm start

   # /etc/init.d/lmx start

10. On the new node, start the GMS and ODM drivers. Use the commands in the order shown:

    # /etc/rc.d/rc2.d/s99odm start

11. On the new node, verify that the GAB port memberships are a, b, d, and o. Run the command:

    # /sbin/gabconfig -a

    GAB Port Memberships