From owner-freebsd-net@freebsd.org Wed Nov 4 13:49:21 2015 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BB5D4A267B6 for ; Wed, 4 Nov 2015 13:49:21 +0000 (UTC) (envelope-from gerrit.kuehn@aei.mpg.de) Received: from umail.aei.mpg.de (umail.aei.mpg.de [194.94.224.6]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 70E891AD5 for ; Wed, 4 Nov 2015 13:49:20 +0000 (UTC) (envelope-from gerrit.kuehn@aei.mpg.de) Received: from mailgate.aei.mpg.de (mailgate.aei.mpg.de [194.94.224.5]) by umail.aei.mpg.de (Postfix) with ESMTP id 8639B200345 for ; Wed, 4 Nov 2015 14:43:57 +0100 (CET) Received: from mailgate.aei.mpg.de (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 76B90405884 for ; Wed, 4 Nov 2015 14:43:57 +0100 (CET) Received: from intranet.aei.uni-hannover.de (ahin1.aei.uni-hannover.de [130.75.117.40]) by mailgate.aei.mpg.de (Postfix) with ESMTP id 4D9BE405882 for ; Wed, 4 Nov 2015 14:43:57 +0100 (CET) Received: from arc.aei.uni-hannover.de ([10.117.15.110]) by intranet.aei.uni-hannover.de (Lotus Domino Release 8.5.3FP6HF1691) with ESMTP id 2015110414435443-370865 ; Wed, 4 Nov 2015 14:43:54 +0100 Date: Wed, 4 Nov 2015 14:43:54 +0100 From: Gerrit =?ISO-8859-1?Q?K=FChn?= To: freebsd-net@freebsd.org Subject: strange nfs/rsync stalls Message-Id: <20151104144354.acccf3c7315a6009264d755d@aei.mpg.de> Organization: Max Planck Gesellschaft X-Mailer: Sylpheed 3.4.2 (GTK+ 2.24.22; amd64-portbld-freebsd10.0) Mime-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on intranet/aei-hannover(Release 8.5.3FP6HF1691 | May 7, 2015) at 04.11.2015 14:43:54, Serialize by Router on intranet/aei-hannover(Release 8.5.3FP6HF1691 | May 7, 2015) at 04.11.2015 14:43:56, Serialize complete at 04.11.2015 14:43:56 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-PMX-Version: 6.0.2.2308539, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2015.11.4.133616 X-PerlMx-Spam: Gauge=IIIIIIII, Probability=8%, Report=' HTML_00_01 0.05, HTML_00_10 0.05, MIME_LOWER_CASE 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_1000_LESS 0, BODY_SIZE_2000_LESS 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, BODY_SIZE_900_999 0, NO_CTA_URI_FOUND 0, NO_URI_FOUND 0, NO_URI_HTTPS 0, __CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __SANE_MSGID 0, __SUBJ_ALPHA_END 0, __SUBJ_ALPHA_START 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0' X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Nov 2015 13:49:21 -0000 Hi all, I see some weird (I think) NFS issue here: I have a NFS server running 10.2-RELEASE exporting a directory to a NFS client running 10.2-STABLE (as of yesterday, tried that update from 10.1 to see if it would fix this issue, but it stayed with me). I use rsync on the client to copy data from local disks to nfs. This appears to work for a few minutes, then the rsync process gets stuck in state "NEWNFS". Messages "newnfs server servername:/data/systems: not responding" start appearing and get repeated over and over. What I think is strange: I cannot see any issue apart from these rsync jobs getting stuck. I can still access the nfs-mounted data on the client just fine in a different shell. I can read, write, do whatever I like, but the rsync job never moves on. I have a couple of other machines that use the same server in the same way, none of them ever showed this behaviour. Are there any suggestions how to debug/fix this? cu Gerrit