From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 2B6FCC433FF for ; Tue, 6 Aug 2019 06:10:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 08C362086D for ; Tue, 6 Aug 2019 06:10:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731753AbfHFGKG (ORCPT ); Tue, 6 Aug 2019 02:10:06 -0400 Received: from mail.cn.fujitsu.com ([183.91.158.132]:6774 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1731714AbfHFGKG (ORCPT ); Tue, 6 Aug 2019 02:10:06 -0400 X-IronPort-AV: E=Sophos;i="5.64,352,1559491200"; d="scan'208";a="73049970" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 06 Aug 2019 14:09:59 +0800 Received: from G08CNEXCHPEKD03.g08.fujitsu.local (unknown [10.167.33.85]) by cn.fujitsu.com (Postfix) with ESMTP id 559164CDFCCD for ; Tue, 6 Aug 2019 14:10:02 +0800 (CST) Received: from [10.167.226.33] (10.167.226.33) by G08CNEXCHPEKD03.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.439.0; Tue, 6 Aug 2019 14:10:03 +0800 From: Su Yanjun Subject: NFS issues about aio and dio test To: CC: Message-ID: <975395cc-62f2-843f-cc71-82339b2869cd@cn.fujitsu.com> Date: Tue, 6 Aug 2019 14:08:32 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.167.226.33] X-yoursite-MailScanner-ID: 559164CDFCCD.AA02B X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: suyj.fnst@cn.fujitsu.com Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Hi, When I tested xfstests generic/465 with NFS, there was something unexpected. When memory of NFS server was 10G, test passed. But when memory of NFS server was 4G, test failed. Fail message was as below.     non-aio dio test     encounter an error: block 4 offset 0, content 62     aio-dio test     encounter an error: block 1 offset 0, content 62 All of the NFS versions(v3 v4.0 v4.1 v4.2) have  this problem. Maybe something is wrong about NFS's I/O operation. Thanks in advance.