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Thunderbird/102.13.0 Subject: Re: RAID mount fails after upgrading to kernel 6.2.0 To: Eric Levy Cc: linux-btrfs@vger.kernel.org References: From: Anand Jain In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: SI1PR02CA0036.apcprd02.prod.outlook.com (2603:1096:4:1f6::20) To PH0PR10MB5706.namprd10.prod.outlook.com (2603:10b6:510:148::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH0PR10MB5706:EE_|PH7PR10MB7694:EE_ X-MS-Office365-Filtering-Correlation-Id: 167ec183-43f4-42d9-8409-08db88e4f31e 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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PH0PR10MB5706.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Jul 2023 05:48:31.9260 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: eb7pwc8KQGfZFy6S4QRdDL7xT0FhPOw0DnkVF6OufYtbb4sXOdQJOtBBeU5aAgMrvJZcdm5kKdbOrlpDy5KZMQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR10MB7694 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-19_16,2023-07-19_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 mlxlogscore=999 suspectscore=0 phishscore=0 bulkscore=0 mlxscore=0 malwarescore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307200047 X-Proofpoint-ORIG-GUID: hdD-V2S5T04dxiR5OuzHuWUeysPRc33_ X-Proofpoint-GUID: hdD-V2S5T04dxiR5OuzHuWUeysPRc33_ Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 20/07/2023 10:50, Eric Levy wrote: > > > On Thu, Jul 20 2023 at 10:26:57 AM +0800, Anand Jain > wrote: >> On 20/07/2023 09:13, Eric Levy wrote: >>> I recently performed a routine update on a Linux Mint system, version >>> 21.2 (Victoria). The update moved the kernel from 5.19.0 to 6.2.0. >>> The system includes a non-root mount that is Btrfs with RAID, which >>> no longer mounts. Error reporting is rather limited and opaque. >>> >>> I am assuming the file system is healthy from the standpoint of the >>> old kernel, but I may need help understanding how to make it viable >>> for the new one. >>> >>> Mounting from the command line prints the following: >>> >>> mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sdg, >>> missing codepage or helper program, or other error. >>> >>> The following is extracted from the boot sequence recorded in the >>> kernel ring: >>> >>> kernel: BTRFS error: device /dev/sdd belongs to fsid >>> c6f83d24-1ac3-4417-bdd9-6249c899604d, and the fs is already mounted >>> kernel: BTRFS error: device /dev/sdf belongs to fsid >>> c6f83d24-1ac3-4417-bdd9-6249c899604d, and the fs is already mounted >>> kernel: BTRFS info (device sde): using crc32c (crc32c-intel) checksum >>> algorithm >>> kernel: BTRFS info (device sde): turning on async discard >>> kernel: BTRFS info (device sde): disk space caching is enabled >>> kernel: BTRFS error (device sde): devid 7 uuid >>> 2f62547b-067f-433c-bec1-b90e0c8cb75e is missing >>> kernel: BTRFS error (device sde): failed to read the system array: -2 >>> kernel: BTRFS error (device sde): open_ctree failed >>> mount[969]: mount: /mnt: wrong fs type, bad option, bad superblock on >>> /dev/sde, missing codepage or helper program, or other error. >>> systemd[1]: mnt.mount: Mount process exited, code=exited, status=32/n/a >> >> >> Looks like the fsid is already mounted. Could you please help check? >> >>     cat /proc/self/mounts | grep btrfs >> >> You could try a fresh scan and mount. >> >>     umount  .. >>     btrfs device scan >>     mount ... >> >> If this doesn't help. Can you share the output of: >> >>     btrfs filesystem dump-super /dev/sd[a-g]  <-- basically all devices >> >> Thanks. > > > The unmount command followed by rescan does enable a successful mount, > but the suggestion that the volume was mounted already had not been > validated by the dump of the mount table. Based on the mount table, the > volume appeared as unmounted even before the command. > > Do you have any suggestions for how to resolve why the volume would be > registered as having been mounted? As mentioned, dump-super might help.