Description of problem: Ceilometer has a statistic feature that provide a history of resource usage, but unfortunately this options doesn't work with Manila. example of object storage usage: ceilometer statistics -q 'resource_id=tenant_id' -m storage.objects.size --period=14400 but there is no option to use statistic with manila, with something like: ceilometer statistics -q 'resource_id=tenant_id' -m storage.NAS.size --period=14400 The purpose of this RFE is to make ceilometer statistic compatible with Manila, so that we can run something similar to the above command. Version-Release number of selected component (if applicable): OSP 7