On Sun, Mar 13, 2016 at 9:47 PM, Ilya Dryomov <idryomov@xxxxxxxxx> wrote: > On Sun, Mar 13, 2016 at 12:45 PM, Peng Tao <bergwolf@xxxxxxxxx> wrote: >> Hi, >> >> The warning about rbd layering in kernel client code has been there >> for more than three years, since it was first activated by commit >> 770eba6e2 (rbd: activate support for layered images) in Oct 2012. >> >> Now users still get "WARNING: kernel layering is EXPERIMENTAL!" when >> mapping an image with parent. Is it time to just drop the warning? Or >> is there still stability concern in some cases? > > We certainly don't regard kernel layering as EXPERIMENTAL - any issue > with it will be treated the same as any other krbd issue, and I'm not > aware of any serious stability concerns with it, compared to the rest > of krbd. > > OTOH, we are working on adding support for object-map and deep-flatten > features for krbd, bringing a fair amount of new code and complexity > into the layering code path. The plan was to merge those features and > drop this warning some time after that. Got it. Thanks a lot for the clarification. Cheers, Tao -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
