Dear list, I used the C API "rados_aio_read" to improve some read performace. But it seems there is no way to get exactly how many bytes I read from rados. the callback function will not return this infomation either. so, it there anyone who could enlighten me how to do this? cheers, Dongmao Zhang -- 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