Dear NFS folks, we observe orphan open-states on our deployment with nfsv4.1. Our setup - two client nodes, running RHEL-7.2 with kernel 3.10.0-327.22.2.el7.x86_64. Both nodes running ownCloud (like a dropbox) which nfsv4.1 mounts to dCache storage. Some clients connected to node1, others to node2. Time-to-time we see some 'active' transfers on data our DS which do nothing. There is a corresponding state on MDS. I have traced one one such cases: - node1 uploads the file. - node2 reads the file couple of times, OPEN+LAYOUTGET+CLOSE - node2 sends OPEN+LAYOUTGET - there is no open file on node2 which points to it. - CLOSE never send to the server. - node1 eventually removes the removes the file We have many other cases where file is not removed, but this one I was able to trace. The link to capture files: https://desycloud.desy.de/index.php/s/YldowcRzTGJeLbN We had ~ 10^6 transfers in last 2 days and 29 files in such state (~0.0029%). Tigran. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
