4.11.6 How to Disable the Shared CCD

In some situations, you might want to disable a shared CCD. Such situations might include troubleshooting scenarios, or conversion of a two-node cluster to a three-node cluster such that you no longer need a shared CCD.

1. Stop one node in the cluster.

   The following command stops phys-hahost2:

   phys-hahost2# scadmin stopnode

2. Back up the shared CCD to a safe location.

3. Turn off the shared CCD by using the scconf(1M) command.

   Run this command on all nodes.

   phys-hahost1# scconf -S none

4. Copy the CCD from the shared diskset to both nodes

5. Unmount the shared CCD volume.

   phys-hahost1# umount /etc/opt/SUNWcluster/conf/ccdssa

6. Deport the disk group on which the shared CCD resided.

   phys-hahost1# vxdg deport sc_dg

7. Restart the stopped node.

   phys-hahost2# scadmin startnode

   The private CCDs on each node should now be identical. To reinstate the shared CCD, follow the steps described in the appendix on configuring SSVM in the Sun Cluster 2.2 Software Installation Guide.