From owner-freebsd-net@freebsd.org Fri Nov 6 07:09:25 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 C025DA27C77 for ; Fri, 6 Nov 2015 07:09:25 +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 727F01450 for ; Fri, 6 Nov 2015 07:09:24 +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 E3134200126 for ; Fri, 6 Nov 2015 08:09:15 +0100 (CET) Received: from mailgate.aei.mpg.de (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id D5399405882 for ; Fri, 6 Nov 2015 08:09:15 +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 B353F405881 for ; Fri, 6 Nov 2015 08:09:15 +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 2015110608090531-374689 ; Fri, 6 Nov 2015 08:09:05 +0100 Date: Fri, 6 Nov 2015 08:09:05 +0100 From: Gerrit =?ISO-8859-1?Q?K=FChn?= To: freebsd-net@freebsd.org Subject: Re: strange nfs/rsync stalls Message-Id: <20151106080905.cb3369337a481b23dc894539@aei.mpg.de> In-Reply-To: <3546_1446644979_563A0CF3_3546_724_1_20151104144354.acccf3c7315a6009264d755d@aei.mpg.de> References: <3546_1446644979_563A0CF3_3546_724_1_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 06.11.2015 08:09:05, Serialize by Router on intranet/aei-hannover(Release 8.5.3FP6HF1691 | May 7, 2015) at 06.11.2015 08:09:15, Serialize complete at 06.11.2015 08:09:15 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=ISO-8859-1 X-PMX-Version: 6.0.2.2308539, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2015.11.6.70015 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_URI_HTTPS 0, REFERENCES 0, __ANY_URI 0, __BOUNCE_CHALLENGE_SUBJ 0, __BOUNCE_NDR_SUBJ_EXEMPT 0, __CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __IN_REP_TO 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __REFERENCES 0, __SANE_MSGID 0, __SUBJ_ALPHA_END 0, __SUBJ_ALPHA_NEGATE 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0, __URI_NO_PATH 0, __URI_NO_WWW 0, __URI_NS ' 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: Fri, 06 Nov 2015 07:09:25 -0000 On Wed, 4 Nov 2015 14:43:54 +0100 Gerrit K=FChn wrote about strange nfs/rsync stalls: > 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? Some more pointers from my side: I see a similar issue when using rsync over ssh, so this does not appear to be a nfs issue. However, even when running rsync with -vvv and debug turned on, I cannot find any hard reason for the lockups. They appear to happen erratically, not at a fixed file or such. When transferring over ssh, I can press CTRL-C to make the syncing go on until the next lockup happens. I also tried to swap client and server (i.e., the machine where I start rsync), and that runs without any issue... which leaves me even more puzzled. Any hints are still very welcome. cu Gerrit