Openstack‘s Block Storage project Cinder intends to allow High Availability Active-Active node configurations in the next Liberty Cycle, and for that there are a number of changes that need to happen. One of those changes is making state changes (changes in status field) atomic inside Cinder, and for that there are different solutions, this code tries to provide some insight into these solutions in an empirical way. What’s the problem? Right now Cinder has sections where status is checked for […]