Troubleshooting Cinder block storage
Troubleshooting Cinder is similar to troubleshooting Glance. The issues that arise are dependent on the backing storage that you use. The best course of action to troubleshoot it is to watch the logs in /var/log/cinder/*
and correct errors that show up in there. These logs are where you will find errors related to creating Cinder volumes and connecting them to the instances.