[cinder] volume type properties / extra_specs

Hi, I was experimenting with the extra_specs of volume types for a project. And while I was able to set and unset properties freely, the volumes created from volume types with random properties could not be created. They always went into Error state. When I removed the properties from the volume type, volumes could be created again. Is it meant to behave like this? So in other words: Are custom properties not allowed for volume types? And if so, why am I allowed to set custom properties? I would expect an Error to happen in the volume type set --property ... process and not when creating a volume. greetings. Josephine (Luzi)