I've posted a preliminary patch set to support a libcephfs io engine in fio: http://github.com/noahdesu/fio cephfs You can use this right now to generate load through libcephfs, but the plugin needs a bit more work before it goes upstream (patches welcome), but feel free to play around with it. There is an example script in examples/cephfs.fio. Issues: Currently all the files that are created get the same size as the total job size rather than the total size being divided by the number of threads. - Noah -- 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