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Fri, 2 Jul 2021 21:16:51 +0000 From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, mreitz@redhat.com, kwolf@redhat.com, vsementsov@virtuozzo.com, jsnow@redhat.com, dem@openvz.org Subject: [PATCH 0/3] Fix active mirror dead-lock Date: Sat, 3 Jul 2021 00:16:33 +0300 Message-Id: <20210702211636.228981-1-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.29.2 X-Originating-IP: [185.215.60.215] X-ClientProxiedBy: HE1PR02CA0112.eurprd02.prod.outlook.com (2603:10a6:7:29::41) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (185.215.60.215) by HE1PR02CA0112.eurprd02.prod.outlook.com (2603:10a6:7:29::41) 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 21:16:50 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 4daa0c24-cfe6-444a-3ffb-08d93d9eb59c X-MS-TrafficTypeDiagnostic: AM6PR08MB4691: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1850; 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envelope-from=vsementsov@virtuozzo.com; helo=EUR04-DB3-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, 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" 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(-)