On Sun, Aug 14, 2016 at 10:41 PM, Ridge Chen <ridge.chen@xxxxxxxxx> wrote: > I have tested on hammer and jewel, the results are similar. Is it expected? In this case, there actually would not be an extra copy-up since you already performed the necessary copy-ups during the "dd" against "clone-vol1". The only difference, on the librbd side, is that the write operation would have an additional "assert object exists" operation before the write operation. Do you see similar differences with the librbd cache disabled and the object map disabled? -- Jason -- 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
