On Wed, Feb 13, 2019 at 10:37 AM Jason Dillaman <jdillama@xxxxxxxxxx> wrote: > > 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. What is the image migration path? I think if we’re going to strip out the ability to read data then the conversion process should be automatic-on-access, if that’s possible... (Also, it's generally good for things like that to provide more than one release's worth of upgrade-overlap. Especially since we will support going straight from Mimic to Octopus.) -Greg
