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[23.128.96.18]) by mx.google.com with ESMTP id fy21si11566588ejb.725.2020.08.04.06.14.51; Tue, 04 Aug 2020 06:15:15 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2020-01-29 header.b=fE3TtfV+; spf=pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-nfs-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728408AbgHDNND (ORCPT + 99 others); Tue, 4 Aug 2020 09:13:03 -0400 Received: from userp2130.oracle.com ([156.151.31.86]:35820 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727987AbgHDNND (ORCPT ); Tue, 4 Aug 2020 09:13:03 -0400 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 074D7D0e101393; Tue, 4 Aug 2020 13:13:00 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=content-type : mime-version : subject : from : in-reply-to : date : cc : content-transfer-encoding : message-id : references : to; s=corp-2020-01-29; bh=hJiDTxwJQvETbzxifQe3+lqFwhRNuuUsrAkVqvUv+n0=; b=fE3TtfV+IL/u47Y6BsmWVHoLb6/0xHp5vJog3rl7YejUPRQoCxrv0kumuhufye3cZYmE tXKAUmstWD9PJ2jGorDYAxdFGwRKTC3cmRQSjsa1GoyhkrMCEhfJ4UiPMcugwVKuRGQl oL+8JHxQCe46owbirtXGDxgmSctHyymGkZF+CYen5y7mCTPkwlIm/h1NL6Wzk4zrjWp2 tKrLaKL4c8iTwcWxYWwRlOQs799Tfh65tUqK6IWBChUsKaJ0oUf0zUX5ammVigM7CkHT iaylLEzn7rQFmCOW2r3AjcGrjN9axSIKRTTpXjFa9OW5tz/DarCdpKfmmiu0FGAJDkwC pA== Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by userp2130.oracle.com with ESMTP id 32pdnq7frp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 04 Aug 2020 13:12:59 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 074DCvgf056282; Tue, 4 Aug 2020 13:12:59 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userp3020.oracle.com with ESMTP id 32pdhc10r5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 04 Aug 2020 13:12:59 +0000 Received: from abhmp0007.oracle.com (abhmp0007.oracle.com [141.146.116.13]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 074DCu1t000429; Tue, 4 Aug 2020 13:12:56 GMT Received: from anon-dhcp-152.1015granger.net (/68.61.232.219) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 04 Aug 2020 06:12:56 -0700 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.80.23.2.2\)) Subject: Re: NFS over RDMA issues on Linux 5.4 From: Chuck Lever In-Reply-To: Date: Tue, 4 Aug 2020 09:12:55 -0400 Cc: Linux NFS Mailing List , linux-rdma Content-Transfer-Encoding: quoted-printable Message-Id: References: <8a1087d3-9add-dfe1-da0c-edab74fcca51@rothenpieler.org> <20200804093635.GA4432@unreal> <92a5a932-b843-eed3-555e-7557ccc1f308@rothenpieler.org> <20200804122557.GB4432@unreal> To: Timo Rothenpieler X-Mailer: Apple Mail (2.3608.80.23.2.2) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9702 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 phishscore=0 spamscore=0 bulkscore=0 malwarescore=0 mlxscore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008040098 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9702 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 impostorscore=0 mlxscore=0 suspectscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 adultscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 spamscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008040097 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org > On Aug 4, 2020, at 9:08 AM, Timo Rothenpieler = wrote: >=20 > On 04.08.2020 14:49, Chuck Lever wrote: >> Timo, I tend to think this is not a configuration issue. >> Do you know of a known working kernel? >=20 > This is a brand new system, it's never been running with any kernel = older than 5.4, and downgrading it to 4.19 or something else while in = operation is unfortunately not easily possible. For a client it would = definitely not be out of the question, but the main nfs server I cannot = easily downgrade. >=20 > Also keep in mind that the dmesg spam happens on both server and = client simultaneously. Let's start with the client only, since restarting it seems to clear the = problem. > I'll see if I can borrow two of the nodes to turn into a temporary = test system for this. >=20 > The Kernel for this system is self-built and not any distribution = kernel. Would it be easy to try a kernel earlier in the 5.4.y stable series? > This could not be a missing kernel config option or something? Doubtful. -- Chuck Lever