In this section, we will explore a few of the more common errors you might encounter with Cinder. While we highlight just a few of the errors you may come across, the troubleshooting techniques we illustrate should be helpful in various troubleshooting situations.
When using LVM to back Cinder, OpenStack expects there to be a volume group named cinder-volumes. When running the vgdisplay command, you can check for the cinder-volumes volume group as shown here:
If you attempt to create cinder volume without having a volume group named cinder-volumes, it's very likely that your volume will end up in an error state as illustrated in the following screenshot with MyVol2:
You can further confirm that this is the issue by checking the scheduler log at /var/log/cinder/scheduler.log file. In this log file, you are looking for an error similar to the one shown here:
The last line in the log file may point to the fact that No valid host was found, but...