If max_over_subscription_ratio is negative, cinder-Scheduler cannot select a backend and volumes cannot be created.
Filter results: AvailabilityZoneFilter: (start: 1, end: 1), CapacityFilter: (start: 1, end: 0), CapabilitiesFilter: (start: 0, end: 0), InstanceLocalityFilter: (start: 0, end: 0)
If max_over_ subscription_ ratio is negative, cinder-Scheduler cannot select a backend and volumes cannot be created.
Filter results: AvailabilityZon eFilter: (start: 1, end: 1), CapacityFilter: (start: 1, end: 0), CapabilitiesFilter: (start: 0, end: 0), InstanceLocalit yFilter: (start: 0, end: 0)