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Configuring LLT, GAB, VCSMM, ODM, and VXFEN drivers

 To configure LLT, GAB, VCSMM, ODM, and VXFEN drivers

1. On the new node, set the shared memory parameter using SAM. The value of the shared memory parameter becomes effective when the system restarts.

   Refer to the Oracle 10g Installation Guide for details.

2. Edit the /etc/llthosts file on the existing nodes. Using vi or another text editor, add the line for the new node to the file. The file resembles:

   0 galaxy

   1 nebula

   2 saturn

3. Copy the /etc/llthosts file from one of the existing nodes to the new node. The /etc/llthosts file must be identical on all cluster nodes.
4. Create the /etc/llttab file on the new node. For example:

   set-node saturn

   set-cluster 101

   link lan1 /dev/lan:1 - ether --

   link lan2 /dev/lan:2 - ether --

   Except for the first line that refers to the node, the file resembles the /etc/llttab files on the existing nodes. The second line must be the same line on all nodes.

5. Use vi or another text editor to create the /etc/gabtab file on the new node. The file resembles:

   /sbin/gabconfig -c -nN

   Where N represents the number of nodes in the cluster. For a three-node cluster, the value of N is 3.

6. Edit the /etc/gabtab file on each of the existing nodes, changing the content to match the file on the new node.
7. If you are adding a node to a single-node SF Oracle RAC cluster, then do the following:
   • Configure I/O fencing on both the original node and the new node.

     See Setting up I/O fencing for SF Oracle RAC

   • Set up the /etc/vcsmmtab files on the new node by copying them from one of the existing nodes:

     # scp galaxy:/etc/vcsmmtab /etc

   • Proceed to step step 9.
8. Set up the /etc/vcsmmtab and /etc/vxfendg files on the new node by copying them from one of the existing nodes:

   # scp galaxy:/etc/vcsmmtab /etc

   # scp galaxy:/etc/vxfendg /etc

   # scp galaxy:/etc/vxfenmode /etc

9. Start LLT and GAB on the new node:

   # /sbin/init.d/llt start

   # /sbin/init.d/gab start

10. On the new node, start the VXFEN, VCSMM, and LMX drivers. Use the following commands in this order:

    # /sbin/init.d/vxfen start

    # /sbin/init.d/vcsmm start

    # /sbin/init.d/lmx start

11. On the new node, start the ODM driver. Use the following commands in this order:

    # kcmodule vxgms=loaded

    # kcmodule odm=loaded

    # /sbin/init.d/odm stop

    # /sbin/init.d/odm start

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

    # gabconfig -a

    GAB Port Memberships

    ===============================================================

    Port a gen df204 membership 012

    Port b gen df20d membership 012

    Port d gen df20a membership 012

    Port o gen df207 membership 012