Hi, Format 2 images (and attendant layering support) are not yet supported by the kernel rbd client, according to: http://ceph.com/docs/master/rbd/rbd-snapshot/#layering When might this support be available? Cheers, Chris -- 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