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Mon, 13 Sep 2021 08:05:36 +0000 Received: from AM7PR04MB6821.eurprd04.prod.outlook.com ([fe80::78e1:ab2a:f283:d097]) by AM7PR04MB6821.eurprd04.prod.outlook.com ([fe80::78e1:ab2a:f283:d097%5]) with mapi id 15.20.4500.018; Mon, 13 Sep 2021 08:05:36 +0000 To: =?UTF-8?Q?Niccol=c3=b2_Belli?= CC: Qu Wenruo , linux-btrfs@vger.kernel.org References: <0303d1f618b815714fe62a6eb90f55ca@linuxsystems.it> <22ac9237-68dd-5bc3-71e1-6a4a32427852@gmx.com> <02f428314a995fa1deea171af9685b9a@linuxsystems.it> <5a1cc167-0b9d-8a89-11e4-cfe388bd2659@suse.com> <75440780864f97ea54d12ff95a395864@linuxsystems.it> From: Qu Wenruo Subject: Re: Unmountable / uncheckable Fedora 34 btrfs: failed to read block groups: -5 open_ctree failed Message-ID: <98a6a966-cee7-cddd-3c53-fa2e209ed180@suse.com> Date: Mon, 13 Sep 2021 16:05:18 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 In-Reply-To: <75440780864f97ea54d12ff95a395864@linuxsystems.it> Content-Type: text/plain; charset=utf-8; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?JAT0o6siIlBmJwTE9JoZ6dUbbUiv2xZ8emO3DUpgqiFqHeUP7kR/1+rP/sGu?= =?us-ascii?Q?onWEzIbtade6rlYVe2r/v/RHJRIh4VursZtKzIvXvAhONXZ4Mwl11zgsTzdZ?= =?us-ascii?Q?EPjNlcwdAt3hwD0WDnde3vor0tacwj6wrPLWyR7woj+/l5DlmjwEiaZyyQhp?= =?us-ascii?Q?4E5smCCXI6xOTVaOyPXIgxk52RCkx7vrI/pX7rKGYl4CLZSuyQoYMUMxjIZa?= =?us-ascii?Q?yIqEGSi2Y4V/bN+b+J0W83PjXxd9Co26Lizm5js/9PLXlvjHD6fsjx5qLHww?= =?us-ascii?Q?GUIZa5PXu08iFDWjVLmfRmNMoU6IUs9K7rTHQG5+smvAtCRTYN8O+VJC27kW?= =?us-ascii?Q?Ystv2FO59MYOKaMZrfaI/LyH9hSzC91t7SmbrAhlsjHj01vPjLu+odOpmP7q?= =?us-ascii?Q?XVNjaHoBJZktc/E0g3GMEf5ih6riDT1kOhXhq0M3caAfQjj1WgGr+EUVmGpz?= =?us-ascii?Q?ofjAuwHPiKTj7c3f07hc1rxtopcJebHg389PyUfKPRJT0KZyycwwpY0ioThV?= =?us-ascii?Q?9mrDZaA1NMj0rYOv2Z0GTpyM43jnetE3olheITWviY40XphjahwWYe+NU8Uf?= =?us-ascii?Q?4mNcyxP6KUAYHhrCe/3axkvv2so7hvoBTRBgAYHlGBe73Pe7JePP6gL7Qdne?= =?us-ascii?Q?iiZD64/hmORC03290Zi4q9476k7efYOrjVYxxKa8v2h+nMOEcGgHZYbD+G91?= =?us-ascii?Q?m4UQO7IAcoT+WY5l1pzK6zUFNqazdNCVQhyWzyOACZiYApL0E09G/8gkJQ6v?= =?us-ascii?Q?dl3lyq/BEEicU/D2ieAl1ThR0pZgyFlx1qQQdc46aiI430q3CCWs0ocOHnhM?= =?us-ascii?Q?e2w+3sFnuKlzedoSDsj6Q3fvX7BcHkGrUp1ZbC40HZLRhON28uTE+CKcXjPn?= =?us-ascii?Q?CTAdqHGiKOwe6dMTMMqKZOmgKTArWV/Xt3FOi3l81IVlouaPZlOzujbygFR9?= =?us-ascii?Q?mC8BJx+dAcYOWssGdFvkfW4mVAAvgAG+Ic0dIWfoPUtPOUyhC1M0pynOJkz9?= =?us-ascii?Q?ns6K0vXeZ6ZyzBbbaesq3OYvGUyBR44CrmFIW6vbdrOyWfkfRxtQZkvbwl7d?= =?us-ascii?Q?b3HFVeX7bqvE3Q39xODXhHk7xJWk+2xoIHonI0Zb2Qsfc1KUnUwQPnOaeV4E?= =?us-ascii?Q?Qm91FmBnTrTA0WZAZ1gxhltSvdIrb67gFsgebiHzbJ9xtBVGObsq9RGQm3j9?= =?us-ascii?Q?dD3TNxWT0x3Gt5QxZYu9Ouo5l/n7qKW/WYw7gnLjTzjTCMzXPVDjaERLRRSR?= =?us-ascii?Q?UNqWm4A8QHuvxlmJBTb33dxdb88SZP2JcPBDUVPcrOYrss6jovHZhpzBB4eD?= =?us-ascii?Q?Tp0euqlpMt4tNYrxtNzB8mS9?= X-OriginatorOrg: suse.com X-MS-Exchange-CrossTenant-Network-Message-Id: b741859a-7f13-42af-598f-08d9768d44b0 X-MS-Exchange-CrossTenant-AuthSource: AM7PR04MB6821.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Sep 2021 08:05:36.6929 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: f7a17af6-1c5c-4a36-aa8b-f5be247aa4ba X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: D58BzCD8cul+0I5pYK34P6OBgS14L75wOqfpJ5xSsYLGg2FBXYCv/d3pVsxouyBa X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR0402MB3784 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 2021/9/13 =E4=B8=8B=E5=8D=883:16, Niccol=C3=B2 Belli wrote: > Il 2021-09-12 19:55 Qu Wenruo ha scritto: >> During the backup, have you checked the dmesg? >=20 > Yes, the only error was the "No space left" I mentioned in the previous=20 > message. >=20 Then it means no csum error. But didn't you hit -EIO errors? > $ sudo cp -a avd var=20 /run/media/niko/3ea0705c-21c9-4ba9-80ee-5a511cb2a093/nvme0n1p6/ > cp: avd/Pixel_4_API_30.avd/userdata-qemu.img.qcow2: recupero delle=20 informazioni degli extent non riuscito: Errore di input/output And > $ sudo cp -a snapshots/home/375/snapshot=20 /run/media/niko/3ea0705c-21c9-4ba9-80ee-5a511cb2a093/nvme0n1p6/home cp:=20 snapshots/home/375/snapshot/niko/devel/beach/client/android/.gradle/checksu= ms/sha1-checksums.bin:=20 recupero delle informazioni degli extent non riuscito: Errore di=20 input/output For those errors, not even a single dmesg error? Anyway, if you have most data recovered and have dd copy at hand, then=20 you may want to try fully recovery the fs to RW state, by some=20 aggressive method: # btrfs check --init-extent-tree --repair This command will try to rebuild the extent tree completely, it uses=20 existing trees to rebuild, thus requires the fs has nothing else but=20 only extent tree corrupted. This is *dangerous*, so the final call is still on you. But if you really hit no other error messages during the full fs=20 recovery, then it looks like only extent tree is corrupted, and may=20 worthy a try. BTW, since you're already using rescue=3Dnologreplay, you may want to zero= =20 the log before rebuilding the extent tree. Thanks, Qu