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? Thanks, 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