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=-12.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 20834C07E95 for ; Fri, 2 Jul 2021 22:35:30 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 420DF613DD for ; Fri, 2 Jul 2021 22:35:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 420DF613DD Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:36026 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lzRku-0001PG-4T for qemu-devel@archiver.kernel.org; Fri, 02 Jul 2021 18:35:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49894) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lzRkA-0000as-Jq; Fri, 02 Jul 2021 18:34:43 -0400 Received: from mail-eopbgr130123.outbound.protection.outlook.com ([40.107.13.123]:10222 helo=EUR01-HE1-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lzRk8-0003vI-6T; Fri, 02 Jul 2021 18:34:42 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Tb+OqkgoCBrW6m1OvRPWRRqno5uGmXIOW+zM/6JqJbFMWh9sygSbqi/pzIaLQWrgJlNyXI4RGkbNvFy1MR9lWi5xncZ27jLgsNFu2sYnYoeCa8LsvzQxCgB7/Od+8V4BowvtNR3b/x1poYFx0ImwbVxvm9S1cCooybAro6kGsQJxFUR8aj5VxkUtJCBUT4JZclaeXKBV2/E4LUmlQK/P6Im2Olvvvft6v4RwjatT0oIAi7yblZ1x3cgAodnl6YVzGYD2kuKOSqiQjhdICyKRqAwkLlhMSJQYpn1nYT6kON+DShaB/UaCVuJqHw5ZEoUSt538B2XKBW7V9aM3J9SntQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=efLGEDydms5DIYBoYUta6GvW4hSOgi1A5RrPY6JPwls=; b=Xbm3RTYvqUKPIJGVJHbRf9fHvFQyU8Rj5p+TziRvotmnFh4vAPGriadIgSR1obJbgHOB27QyR3UlPzMH53p1bktQUVG8tfrAC4UUK2vh5fZVukc0px60b6kimaGGfreDXpiVO8FSJ7HUh4i/kZHZ1mlV7Jwgow/alCLlManuVjpdyxajecg4nYyZhWiXTR83A2LlodDQUMduKuI1Mj1XsBh6BrlXGBw+FaaGTuAVSBbks1gX5aPQJf4CyAms4hwMsjF/xph55H306i6aM5dIayarhhCzmQq/BnhpKIQlzcSJI1FdOiSn40x4L0NiINgjTghan4dB4D4xpw0/lY+Idg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=virtuozzo.com; dmarc=pass action=none header.from=virtuozzo.com; dkim=pass header.d=virtuozzo.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=virtuozzo.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=efLGEDydms5DIYBoYUta6GvW4hSOgi1A5RrPY6JPwls=; b=kOBkOb6LL2y70dLcgAiZW4PbMuT2Gq4731zDrYgBXrIW6E5OhqHNEsUkdkRywZ59AVQMjGGLHJnbbiAWvexIQWeQgb8pi3WVWq0qx6ITage9DfaUNumOl0m2yXCCSdQobs1WusVKXxYSIyyFzTMGLOKWsUaSQD7uVEBDliIYYNI= Authentication-Results: openvz.org; dkim=none (message not signed) header.d=none;openvz.org; dmarc=none action=none header.from=virtuozzo.com; Received: from AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) by AM6PR08MB4213.eurprd08.prod.outlook.com (2603:10a6:20b:8e::26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4287.27; Fri, 2 Jul 2021 22:34:36 +0000 Received: from AM7PR08MB5494.eurprd08.prod.outlook.com ([fe80::75ce:1d52:cb60:e955]) by AM7PR08MB5494.eurprd08.prod.outlook.com ([fe80::75ce:1d52:cb60:e955%6]) with mapi id 15.20.4264.026; Fri, 2 Jul 2021 22:34:35 +0000 Subject: Re: [PATCH 0/3] Fix active mirror dead-lock To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, mreitz@redhat.com, kwolf@redhat.com, jsnow@redhat.com, "Denis V. Lunev" References: <20210702211636.228981-1-vsementsov@virtuozzo.com> From: Vladimir Sementsov-Ogievskiy Message-ID: <7455aa90-fa4c-d3d0-2ad0-8afef9e7b7a9@virtuozzo.com> Date: Sat, 3 Jul 2021 01:34:33 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 In-Reply-To: <20210702211636.228981-1-vsementsov@virtuozzo.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [185.215.60.215] X-ClientProxiedBy: PR0P264CA0283.FRAP264.PROD.OUTLOOK.COM (2603:10a6:100:1::31) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.100.8] (185.215.60.215) by PR0P264CA0283.FRAP264.PROD.OUTLOOK.COM (2603:10a6:100:1::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4287.22 via Frontend Transport; Fri, 2 Jul 2021 22:34:34 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 3f6ddbed-f648-4719-7086-08d93da9919b X-MS-TrafficTypeDiagnostic: AM6PR08MB4213: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1850; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:AM7PR08MB5494.eurprd08.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(366004)(346002)(396003)(376002)(136003)(39830400003)(5660300002)(186003)(16526019)(4326008)(31696002)(8676002)(31686004)(478600001)(66556008)(66476007)(316002)(66946007)(2906002)(26005)(956004)(8936002)(52116002)(107886003)(36756003)(2616005)(4744005)(16576012)(86362001)(6916009)(6486002)(38100700002)(38350700002)(83380400001)(43740500002)(45980500001); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?aVB6d09DdTRZRnNGYUN0MUI4cmhGRUxnbHZ6dC93TmN0MHhGOUJOSVJiV2NM?= =?utf-8?B?cFBmMjU5VHJ0cFB4aVFITS9Idk1mVlhFZk1LbVUzYnJBVHkrS0VWTThYTEg3?= =?utf-8?B?ZXZYbGNGcVhoZjJ3RUxtYWFyMDdqUTdRbDFKbDVEOGpVQVg1MDgyMk5qMXBs?= =?utf-8?B?U0FzcVZ3UUZCWjVscEhOQ21CNEkxT1lFMmRhMjNnZW5VaXBPbVlEdGZjQm1q?= =?utf-8?B?azhxcStheERRU1FjNEVkNEgzNzAwcDRWWll3ekFBZS9oOERCdXRNUVdiREtT?= =?utf-8?B?aHhldENhVndiQ2ZhQXFpMlpLNFhOTnU2amhyQ0pkZENtM3R0SjdHVjNReEVR?= =?utf-8?B?MEt3VUI0SndzS0lvdlpDa2hUTG1oUTFVeERJUm4vZXQ3SVlJUHZpWjFzcDZN?= =?utf-8?B?eDhBUFBZY1dtNWRNTmhQTnl3bEFNa2dFYUorMnI1OWxvQlBReFN5NGxxZG5j?= =?utf-8?B?OUhhbW9CVHlxTkZWRDBVTkRObEVEbVo3RTc0WTVTTk5EZGJTYUtFQzhqVkVp?= =?utf-8?B?Wjl5ZmVFMUp5VWxXOFFzZVlXRDVFMnBkOEIrbXoyaWVVZzdkQVdab0tKOFVn?= =?utf-8?B?UG5INFU0TzNTa1ZJREpFbU84bU5ZY0NBQjUyMVlmR05wN1BrcEh1R0VGSWlC?= =?utf-8?B?SjJyNkFienFXVm1DUUZiOG9XZndua1R4ak4wSkNJTlFYQmovSEVBRXgrbVBD?= =?utf-8?B?ZStOc0xkMzJJNXpsZEtHVDFaeThRakp2ckg5QXh6akhUaWdKN0RBSzZiNjJr?= =?utf-8?B?cjNMR2d6V2tTUnY3MFJ4OTRSUGhwcFhFZy9uUmgvZExBTmxoL2lmMXFhckpz?= =?utf-8?B?ZkdZS3ZuanZKYUR2UkpTYXcrOW11M2t5SG1hZHdBTUhGa1YzQmF2RUU4OWo4?= =?utf-8?B?ZWpuVE5BamRKeEl5WER3SHIwVlZEb1AwdTdpNnNpR2wxTmhFa3FJUkVGdXY2?= =?utf-8?B?R2FXYUpvYlkxZTlKSGU4RmVxT2NhcTBvWmxYWXU2SURNbzJsaCtMcnVzUThS?= =?utf-8?B?UFFLeFFqS1hWcEFLLy9vY1pzRTFIdUFIQzJXMTdRY3F2RTdMZUU3OVVJVk1P?= =?utf-8?B?VXZkdHgrUmsvalUvLzlSRFdCMHRUSGQzSHhrSkJoSjBVZFF1VG1wUVVyQ3Zr?= =?utf-8?B?RE02MFlIY1UyMDI2WnNYS3RVRzl2UVFQSHZGY0M0NXEyRUtsR2hxYVNiNDNp?= =?utf-8?B?bks3OXI1djhwNUhDd05Qa3YzbFVSVml6Z0FveDBmMWVUSlprRU5oNTBTTTdm?= =?utf-8?B?YmRZZVJ6TGRMaUFMcUZWOXZXV0kyazJVQlVMWENMTTdkOUlHTHlvemdFeGdR?= =?utf-8?B?bVMweEhmYnQzQkVDMEdMVHVSZENpMVMxTTNZellaQW8zQ1JNZ0RZbzQ5aW1u?= =?utf-8?B?VVIvcXA3R1prNTliWGFIZVhpb1ZNZmpmcGZHOWVyVGFtOHkwejQvRnZJSjZF?= =?utf-8?B?TERGeGhvS1hNRFkwR0ZGZDhXSkNnZ0dQRGVuM2QyMzhKSHN0RmxxWk9GckY0?= =?utf-8?B?OEtXemhXYUVXVXU3VFlNMzA0UWhGL3AxWGxaZ2tSdVZPNHRGdXhldm1UcUw1?= =?utf-8?B?a2lXQ0RwUUFDZXJYQWZqM1VBbVFBNWpJQmpCK2FDOXkwaDEvTXlWb0hDUXlJ?= =?utf-8?B?QmVURW1aZG1wN2JkUGliT2lkRTAvR2xnVDVXY0I2UHdjbE5rRFNNUlVNcnU1?= =?utf-8?B?U0Y2Qi9YYUlLOCtFZmFGaHZhN1NyUlpWUnRWeWpJQjZySGxSMlVoSCtaZHJt?= =?utf-8?Q?Jyu+zW1UcnP3/CsAaW+hyjKIzxnKqEmZPHn57Jw?= X-OriginatorOrg: virtuozzo.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3f6ddbed-f648-4719-7086-08d93da9919b X-MS-Exchange-CrossTenant-AuthSource: AM7PR08MB5494.eurprd08.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Jul 2021 22:34:35.3188 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 0bc7f26d-0264-416e-a6fc-8352af79c58f X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: tlplosnz7pOV2Ft3sfpbc6VRTzwyd7Z5YwsW84GgytcFG9pBSEMe9jvg+4/Ctco/l3hG5RcxGk/LX75tXUDxxZfM+2jF21F4x8dOIBM22+w= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR08MB4213 Received-SPF: pass client-ip=40.107.13.123; envelope-from=vsementsov@virtuozzo.com; helo=EUR01-HE1-obe.outbound.protection.outlook.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" [Fix Den's email address in CC] 03.07.2021 00:16, Vladimir Sementsov-Ogievskiy wrote: > Hi all! > > We've faced a dead-lock in active mirror in our Rhev-8.4 based Qemu > build. And it's reproducible on master too. > > Vladimir Sementsov-Ogievskiy (3): > block/mirror: set .co for active-write MirrorOp objects > iotest 151: add test-case that shows active mirror dead-lock > block/mirror: fix active mirror dead-lock in mirror_wait_on_conflicts > > block/mirror.c | 13 +++++++++ > tests/qemu-iotests/151 | 54 ++++++++++++++++++++++++++++++++++++-- > tests/qemu-iotests/151.out | 4 +-- > 3 files changed, 67 insertions(+), 4 deletions(-) > -- Best regards, Vladimir