For the future Ceph Octopus release, I would like to remove all remaining support for RBD image format v1 images baring any substantial pushback. The image format for new images has been defaulted to the v2 image format since Infernalis, the v1 format was officially deprecated in Jewel, and creation of new v1 images was prohibited starting with Mimic. The forthcoming Nautilus release will add a new image migration feature to help provide a low-impact conversion path forward for any legacy images in a cluster. The ability to migrate existing images off the v1 image format was the last known pain point that was highlighted the previous time I suggested removing support. Please let me know if anyone has any major objections or concerns. Thanks, Jason
