Hi, I would like to request a spec freeze exception for the new Cinder Quota System spec [1]. Analysis of the required spec changes needed to implement the second quota driver, as agreed in the PTG/mid-cycle, were non trivial. In the latest spec update I just pushed there are considerable changes: - General improvements to existing sections to increase readability. - Description of the additional driver and reasons why we decided to implement it. - Spell out through the entire spec the similarities and differences of both drivers. - Change in tracking of the reservations to accommodate the new driver. - Description on how switching from one driver to the other would work. - Updated the driver interface to accommodate the particularities of the new driver. - Updated the performance section with a very brief summary of the performance tests done with some code prototipe. - Updating the phases of the effort as well as the work items. Cheers, Gorka. [1]: https://review.opendev.org/c/openstack/cinder-specs/+/819693