Hi Zheng, i have one question about Journaler flush, suppose there are two in flight flushes ? first is flushing (a, b), second is flushing (b+1, c) let's assume these two range belong to two adjacent objects. is that possible that the second flush got the reply first ? if that so, the safe_pos would be wrong ? Thanks, Dongdong -- 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