From nobody Mon Jul 19 10:21:48 2021 X-Original-To: freebsd-net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id A669412AB19B for ; Mon, 19 Jul 2021 10:21:52 +0000 (UTC) (envelope-from gerrit.kuehn@aei.mpg.de) Received: from mailgate2.uni-hannover.de (mailgate2.uni-hannover.de [130.75.2.114]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4GSyZ75rVrz3t1N for ; Mon, 19 Jul 2021 10:21:51 +0000 (UTC) (envelope-from gerrit.kuehn@aei.mpg.de) Received: from intranet.aei.uni-hannover.de (ahin1.aei.uni-hannover.de [130.75.117.40]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mailgate2.uni-hannover.de (Postfix) with ESMTPS id 396BB3112 for ; Mon, 19 Jul 2021 12:21:49 +0200 (CEST) Received: from arc.aei.uni-hannover.de ([130.75.117.1]) by intranet.aei.uni-hannover.de (IBM Domino Release 9.0.1FP8) with ESMTP id 2021071912214854-7846 ; Mon, 19 Jul 2021 12:21:48 +0200 Date: Mon, 19 Jul 2021 12:21:48 +0200 From: Gerrit =?UTF-8?B?S8O8aG4=?= To: freebsd-net Subject: nfs lockd not responding Message-ID: <20210719122148.2c2fb994@arc.aei.uni-hannover.de> Organization: AEI X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; amd64-portbld-freebsd12.2) List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org MIME-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on intranet/aei-hannover(Release 9.0.1FP8|February 23, 2017) at 19/07/2021 12:21:48, Serialize by Router on intranet/aei-hannover(Release 9.0.1FP8|February 23, 2017) at 19/07/2021 12:21:48, Serialize complete at 19/07/2021 12:21:48 X-TNEFEvaluated: 1 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-Virus-Scanned: clamav-milter 0.102.4 at mailgate2 X-Virus-Status: Clean X-Rspamd-Queue-Id: 4GSyZ75rVrz3t1N X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of gerrit.kuehn@aei.mpg.de has no SPF policy when checking 130.75.2.114) smtp.mailfrom=gerrit.kuehn@aei.mpg.de X-Spamd-Result: default: False [0.10 / 15.00]; RCVD_TLS_LAST(0.00)[]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-0.70)[-0.701]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; DMARC_NA(0.00)[mpg.de]; AUTH_NA(1.00)[]; RCPT_COUNT_ONE(0.00)[1]; HAS_ORG_HEADER(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_ALL(0.00)[]; RCVD_IN_DNSWL_MED(-0.20)[130.75.2.114:from]; NEURAL_SPAM_SHORT(0.27)[0.265]; R_SPF_NA(0.00)[no SPF record]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; R_MIXED_CHARSET(0.83)[subject]; ASN(0.00)[asn:680, ipnet:130.75.0.0/16, country:DE]; MIME_TRACE(0.00)[0:+]; MAILMAN_DEST(0.00)[freebsd-net] X-ThisMailContainsUnwantedMimeParts: N Hello, I have a set of NFS(v3) client/server machines which have been working fine for me for the last years. However, lately the client side sometimes complains about: --- Jul 15 01:41:55 client kernel: nfs server server:/data: lockd not responding Jul 15 01:41:55 client kernel: nfs server server:/data: lockd is alive again --- This happens every now and then (like every 5 minutes or so) while transferring data over nfs. Recovery is always within the same second, so there is no real slowdown of anything visible. Both sides run FreeBSD 12.2. Any ideas what might be causing this and how to fix it (or is it harmless)? Doing some searching turned up nothing really useful for me so far. cu Gerrit