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SFS:(13230025)(346002)(396003)(376002)(136003)(366004)(39860400002)(451199018)(6486002)(83380400001)(31696002)(86362001)(38100700002)(6506007)(53546011)(6666004)(36756003)(26005)(186003)(6512007)(2616005)(316002)(66946007)(8936002)(478600001)(44832011)(66476007)(66556008)(31686004)(5660300002)(41300700001)(8676002)(2906002)(45980500001)(43740500002); DIR:OUT; SFP:1101; X-OriginatorOrg: suse.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2023 07:48:51.4254 (UTC) X-Source-IP: 40.107.22.55 X-Proofpoint-Virus-Version: vendor=nai engine=6500 definitions=10630 signatures=596816 X-Proofpoint-Spam-Details: rule=tap_notspam policy=tap score=0 malwarescore=0 phishscore=0 adultscore=0 lowpriorityscore=0 mlxscore=0 priorityscore=175 mlxlogscore=999 impostorscore=0 suspectscore=0 clxscore=206 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302240063 Subject: Re: [Ocfs2-devel] report BUG: io_uring triggers umount error X-BeenThere: ocfs2-devel@oss.oracle.com X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Heming Zhao via Ocfs2-devel Reply-to: Heming Zhao Content-transfer-encoding: 7bit Content-type: text/plain; charset="us-ascii"; Format="flowed" Errors-to: ocfs2-devel-bounces@oss.oracle.com X-ClientProxiedBy: TY2PR0101CA0034.apcprd01.prod.exchangelabs.com (2603:1096:404:8000::20) To PA4PR04MB7997.eurprd04.prod.outlook.com (2603:10a6:102:c9::6) X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PA4PR04MB7997:EE_|AM8PR04MB7731:EE_ X-MS-Office365-Filtering-Correlation-Id: 44c24ee1-222d-424f-4e10-08db163b91f9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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VGJwE3fwwH8EPNqWcNSYIfNRmlGUhhjY1VJabBr3UVT2Rtxb7QYTf3AE8dRaI6dLdM+WarvUDeEmAcAQxBMnfA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM8PR04MB7731 X-ServerName: mail-am6eur05on2055.outbound.protection.outlook.com X-Proofpoint-SPF-Result: pass X-Proofpoint-SPF-Record: v=spf1 include:spf.suse.com include:amazonses.com include:spf.protection.outlook.com include:_spf.qemailserver.com include:_spf.salesforce.com -all X-Spam: Clean X-Proofpoint-ORIG-GUID: zH0XueS98Z2-7d5BQSPZQYbXOjbjU5Fs X-Proofpoint-GUID: zH0XueS98Z2-7d5BQSPZQYbXOjbjU5Fs Reporting-Meta: AAFdvB1vcqrL4onC7NnXMJ90We+eO/mASFp09ZwvwEKp6BcbsQ9kc5mdEFsw/nIF ooFJXyMypdxuaZQi3jMRzuwKedbUc5jM5eq3VqncayD9A1qD2fwN/fkecDYUrP86 gffCt7kY+fxMHdSjgNeLsD2OLFfH7s2kOsS3DArmMQ23gOfY+P78CAuz+MuuqBbV eWc2o01DIBmodjyONJQEAMrAwSIJtaDvYR21YIjBcD3zcDdOW7T7cG7kGIf2cKcf 0FVUTGf+DGZageJuE9NcniKDs4jpCsaXxxNjOLJEDMGBtM8DVJd+KeaMy7dlLsnM CZPaGsyGlcqtfcYxz14ssfvRiRFk+LY1xVTfzU1ipIZkn+8ZfxiCLBdh7GAzymHW LIgCbh6LRRHrA7/r/424HDS7VCWjxDlfeC60jHwgQFf8Izhrk7uE+/qo9sQDxg1o SB3U+lrs/LEeswNV149S0i8uC4II6vP6/LAMFt2kN36+5YvCKkmtQ3cW0p8ZL3M3 OklLvlCtZo1vxsoJeXlTxQRkzYo1ln9kD/tdWCE5j/Ld On 2/24/23 2:54 PM, Joseph Qi wrote: > I can reproduce this in my local VM. > I've traced ocfs2_dismount_volume and found that it hasn't been called. > So EBUSY is returned in VFS layer. I guess something wrong when doing > a copy with linked SQEs (normal copy seems no problem). > I am inclined to agree with you. I also test liburing examples apps on ext4 partition, everything looks fine. I used below bpftrace method, the retval is '3'. bpftrace -e 'kr:mnt_get_count{printf("%d\n", retval);}' It responds to flow: path_umount() => do_umount => mnt_get_count (gets '3') Thanks, Heming > > On 2/24/23 8:32 AM, Heming Zhao wrote: >> Hello List, >> >> I found a weird bug on ocfs2. I am busying with other jobs, if anyone have time >> he/she could fix it. This bug is blocking fstest generic/013 test case, and also >> blocking fstest to do later test cases. >> >> How to trigger: >> ``` >> git clone git://git.kernel.dk/liburing.git >> cd liburing >> make >> cd examples >> mount -t ocfs2 /dev/sda /mnt >> cp /etc/hosts /mnt/a >> ./link-cp /mnt/a /mnt/b >> umount /mnt >> ``` >> >> umount trigger error message: >> ``` >> # umount /mnt >> umount: /mnt: target is busy. >> ``` >> >> The umount error can only be triggered by liburing write operation. >> >> Thanks, >> Heming _______________________________________________ Ocfs2-devel mailing list Ocfs2-devel@oss.oracle.com https://oss.oracle.com/mailman/listinfo/ocfs2-devel