Had a successful first install of Oracle RAC 11gR2 on RHEL6 in the lab... but we were running out of disk on the root drive, where Oracle software is installed. In my absence, disk was added, and files copied while the cluster/database was running. Subsequently one node crashed and is not recoverable. The remaining node keeps throwing this error when I attempt to start the clusterware: $ crsctl start cluster CRS-4639: Could not contact Oracle High Availability Services CRS-4000: Command Start failed, or completed with errors. I'm unable to start the clusterware. I looked at the log file, and saw references to failures reaching the crashed node, so I thought maybe I have to tell the clusterware that we're missing a node, but all the commands I've found to do so require cluster services to be running. What else should I be looking at to diagnose this? I'm trying to evaluate if I have to reiinstall everything from scratch or if this lab setup can be salvaged. Thanks! also, please note the following is the only cluster-related process I find running on the remaining node: root 1557 1 0 11:50 ? 00:00:00 /bin/sh /etc/init.d/init.ohasd run