hello! When I use the CEPH, ceph-mds crashes at line 2125 in mds/Server.cc,because the mdr->dn[0] is empty, so modify it to: reply_request(mdr, 0, ref, (req->get_op() == CEPH_MDS_OP_LOOKUP && !mdr->dn[0].empty()) ? mdr->dn[0].back() : 0); Is this right? thanks name:zhangjianxin -- 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