Right now the cinder scheduler is taking the default storage_availability_zone of nova but we should change it to az0.

Alan Bishop wrote:

"With scheduler in the "nova" zone then every volume create will need to specify one of the AZs. An alternative is running the scheduler in az0. Then again, maybe the desire is to NOT have a default AZ, and that goal is accomplished by running the scheduler in an isolated AZ where there aren't any volume services."

IMO we should default to az0 like we did for cinder backup in OSPRH-11770