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 25264C35DF2 for ; Tue, 25 Feb 2020 06:04:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EC87D20732 for ; Tue, 25 Feb 2020 06:04:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725837AbgBYGEI (ORCPT ); Tue, 25 Feb 2020 01:04:08 -0500 Received: from mail.cn.fujitsu.com ([183.91.158.132]:27248 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725788AbgBYGEI (ORCPT ); Tue, 25 Feb 2020 01:04:08 -0500 X-IronPort-AV: E=Sophos;i="5.70,482,1574092800"; d="scan'208";a="83887696" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 25 Feb 2020 14:04:05 +0800 Received: from G08CNEXMBPEKD04.g08.fujitsu.local (unknown [10.167.33.201]) by cn.fujitsu.com (Postfix) with ESMTP id 9BD3650A9967; Tue, 25 Feb 2020 13:54:14 +0800 (CST) Received: from [10.167.220.84] (10.167.220.84) by G08CNEXMBPEKD04.g08.fujitsu.local (10.167.33.201) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 25 Feb 2020 14:03:56 +0800 Subject: Re: generic/269 hangs on lastest upstream kernel From: Yang Xu To: "Theodore Y. Ts'o" , Jan Kara CC: fstests References: <20200213211011.GB6600@quack2.suse.cz> <062ac52c-3a16-22ef-6396-53334ed94783@cn.fujitsu.com> <20200214150059.GA22815@quack2.suse.cz> <20200218082436.GF16121@quack2.suse.cz> <83cc6208-3fa3-86bb-eb91-77b90b22d98f@cn.fujitsu.com> <20200218110311.GI16121@quack2.suse.cz> <73af3d5c-ca64-3ad3-aee2-1e78ee4fae4a@cn.fujitsu.com> <20200219124324.GO16121@quack2.suse.cz> <20200219152020.GH330201@mit.edu> <27bea3a0-7a72-a924-644a-eece4bef97a2@cn.fujitsu.com> Message-ID: Date: Tue, 25 Feb 2020 14:03:58 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.0 MIME-Version: 1.0 In-Reply-To: <27bea3a0-7a72-a924-644a-eece4bef97a2@cn.fujitsu.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.167.220.84] X-ClientProxiedBy: G08CNEXCHPEKD05.g08.fujitsu.local (10.167.33.203) To G08CNEXMBPEKD04.g08.fujitsu.local (10.167.33.201) X-yoursite-MailScanner-ID: 9BD3650A9967.AC1A9 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: xuyang2018.jy@cn.fujitsu.com Sender: fstests-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: fstests@vger.kernel.org on 2020/02/20 9:35, Yang Xu wrote: > > > on 2020/02/19 23:20, Theodore Y. Ts'o wrote: >> On Wed, Feb 19, 2020 at 01:43:24PM +0100, Jan Kara wrote: >>> This means, fsstress command has queued cache flush request (from >>> blkdev_issue_flush()), this has been dispatched to the driver ('D' >>> event) >>> but it has never been completed by the driver and so >>> blkdev_issue_flush() >>> never returns. >>> >>> To debug this further, you probably need to start looking into what >>> happens >>> with the request inside QEMU. There's not much I can help you with at >>> this >>> point since I'm not an expert there. Do you use image file as a >>> backing store >>> or a raw partition? >> >> This is looking more and more like a Qemu bug or a host OS issue. >> Yang is using a two year old Qemu (qemu-kvm-2.12.0-32.el8+1900+70997154) >> and is using a QCOW backing file.  It also could be a host kernel bug, >> although that's less likely. >> >> Yang, any chance you could have a chance to upgrade to a newer version >> of Qemu, and see if the problem goes away?  If you have a RHEL support >> contract, perhaps you could file a support request with the Red Hat >> help desk? > Of course, I will update lastest qemu to test.(I don't have their support). Hi Ted, Jan I have updated lastest qemu(4.2.0), it still hangs. But I think it is not fs problem. Because it only failed when disk uses IDE bus, I use scsi bus, it passed. Thanks for your analysis and help. Best Regards Yang Xu >> >>                                              - Ted >> >> > >