On Thu, 17 Jul 2014, Alphe Salas wrote: > I don t use QEMU /KVM just a plain regular rbd image format 1 map and mounted > to a real machine that is used as proxy for data droping to ceph. Oh, that explains part of it at least. The discard support isn't yet upstream for the kernel RBD driver. The patches are mostly ready but there was a QA failure they're chasing down first. Hopefully it will make it into the next kernel cycle. sage -- 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