Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13E13C43381 for ; Wed, 6 Mar 2019 09:59:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D190F20657 for ; Wed, 6 Mar 2019 09:59:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729189AbfCFJ7y (ORCPT ); Wed, 6 Mar 2019 04:59:54 -0500 Received: from out30-43.freemail.mail.aliyun.com ([115.124.30.43]:35012 "EHLO out30-43.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726596AbfCFJ7y (ORCPT ); Wed, 6 Mar 2019 04:59:54 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R621e4;CH=green;DM=||false|;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01f04455;MF=jiufei.xue@linux.alibaba.com;NM=1;PH=DS;RN=6;SR=0;TI=SMTPD_---0TM5zkFP_1551866380; Received: from ali-186590e05fa3.local(mailfrom:jiufei.xue@linux.alibaba.com fp:SMTPD_---0TM5zkFP_1551866380) by smtp.aliyun-inc.com(127.0.0.1); Wed, 06 Mar 2019 17:59:43 +0800 Subject: Re: [bug report] task hang while testing xfstests generic/323 To: Trond Myklebust , "aglo@umich.edu" Cc: "bfields@fieldses.org" , "Anna.Schumaker@netapp.com" , "linux-nfs@vger.kernel.org" , "joseph.qi@linux.alibaba.com" References: <3b6597b0-41b4-255a-5ebb-cf34ad95315c@linux.alibaba.com> <57796366-0f08-2cfb-6f85-27d5485c07af@linux.alibaba.com> <365504c3-d785-7e4b-1dd2-c75f30c85c65@linux.alibaba.com> <740c1ad6c5b2afad196af34f48dda7097b5102b7.camel@hammerspace.com> <1417d6c8-3602-d895-a036-44031a7c1e98@linux.alibaba.com> From: Jiufei Xue Message-ID: <46f5c870-f4fd-b29a-f5eb-eab39c4c1e89@linux.alibaba.com> Date: Wed, 6 Mar 2019 17:59:39 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:60.0) Gecko/20100101 Thunderbird/60.3.3 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Hi Trond, > > No, that's quite weird... Were you able to catch this behaviour on > wireshark? It would be interesting to see if the server is actually > sending 2 SEQUENCE ops or if that is a corruption that occurs on the > client. > Many packages are dropped by kernel when I use tcpdump, so I am not sure whether the server is sending 2 SEQUENCE. However, according to tracepoint nfsd_compound_status, the server is processing SEQUENCE op only once. I think it is more likely blames to the client. Is there any other way to catch the behaviour? Thanks, Jiufei