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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 2513AC433EF for ; Sun, 12 Sep 2021 16:07:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EFA5A61050 for ; Sun, 12 Sep 2021 16:07:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229726AbhILQI1 (ORCPT ); Sun, 12 Sep 2021 12:08:27 -0400 Received: from mail.linuxsystems.it ([79.7.78.67]:58217 "EHLO mail.linuxsystems.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229560AbhILQI1 (ORCPT ); Sun, 12 Sep 2021 12:08:27 -0400 Received: by mail.linuxsystems.it (Postfix, from userid 33) id 7434F210244; Sun, 12 Sep 2021 17:51:25 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxsystems.it; s=linuxsystems.it; t=1631461885; bh=HtMVELN8ClfZ6/tfXgLWmcqeTfYCA8+zAzKdFy3TAZ8=; h=To:Subject:Date:From:Cc:In-Reply-To:References:From; b=M04FH8G4/hZT+1S7e9cRSjY9jjV6If22GQnEMomeujbgF84tLLw0WZ64wlAR4Ydjj PCSr1d5mF7Ai37k946mPl/+mW3td1oOPxbgqKiYasE4jlklMAgfPaiooF9onlqKqXc q2KylDZ9EF1ynx/VgTXd+9yGxoxCiG6U1+5/Vjr8= To: Qu Wenruo Subject: Re: Unmountable / uncheckable Fedora 34 btrfs: failed to read block groups: -5 open_ctree failed X-PHP-Originating-Script: 0:rcube.php MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Sun, 12 Sep 2021 17:51:25 +0200 From: =?UTF-8?Q?Niccol=C3=B2_Belli?= Cc: linux-btrfs@vger.kernel.org In-Reply-To: References: <0303d1f618b815714fe62a6eb90f55ca@linuxsystems.it> <22ac9237-68dd-5bc3-71e1-6a4a32427852@gmx.com> <7163096f475d3c31d7513c22277ad00f@linuxsystems.it> Message-ID: <7294d85b7a0b3386be95fbe2d1ec6f9b@linuxsystems.it> X-Sender: darkbasic@linuxsystems.it User-Agent: Roundcube Webmail/1.1.5 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Il 2021-09-12 15:35 Qu Wenruo ha scritto: > My bad, the commit is 2b29726c473b ("btrfs: rescue: allow ibadroots to > skip bad extent tree when reading block group items"), which is only > merged into the incoming v5.15-rc1. I've compiled linux-git master and tried again: $ uname -a Linux arch-laptop 5.14.0-1-git-11152-g78e709522d2c #1 SMP PREEMPT Sun, 12 Sep 2021 12:53:13 +0000 x86_64 GNU/Linux $ sudo mount -o ro,rescue=ibadroots /run/media/niko/3ea0705c-21c9-4ba9-80ee-5a511cb2a093/nvme0n1p6.img.copy /mnt2/ mount: /mnt2: can't read superblock on /dev/loop0. [ 196.277414] loop: module loaded [ 196.278228] loop0: detected capacity change from 0 to 207618048 [ 196.736456] BTRFS: device label fedora_localhost-live devid 1 transid 1029644 /dev/loop0 scanned by mount (2730) [ 196.736819] BTRFS info (device loop0): flagging fs with big metadata feature [ 196.736825] BTRFS info (device loop0): ignoring bad roots [ 196.736826] BTRFS info (device loop0): disk space caching is enabled [ 196.736827] BTRFS info (device loop0): has skinny extents [ 197.408704] BTRFS warning (device loop0): checksum verify failed on 21348679680 wanted 0xd05bf9be found 0x2874489b level 1 [ 197.408843] BTRFS info (device loop0): start tree-log replay [ 197.408847] BTRFS warning (device loop0): log replay required on RO media [ 197.409458] BTRFS error (device loop0): open_ctree failed So I've added nologreplay and it did the trick: $ sudo mount -o ro,rescue=nologreplay:ibadroots /run/media/niko/3ea0705c-21c9-4ba9-80ee-5a511cb2a093/nvme0n1p6.img.copy /mnt2/ [ 416.913016] loop0: detected capacity change from 0 to 207618048 [ 416.918895] BTRFS info (device loop0): flagging fs with big metadata feature [ 416.918903] BTRFS info (device loop0): disabling log replay at mount time [ 416.918905] BTRFS info (device loop0): ignoring bad roots [ 416.918907] BTRFS info (device loop0): disk space caching is enabled [ 416.918908] BTRFS info (device loop0): has skinny extents [ 416.929887] BTRFS warning (device loop0): checksum verify failed on 21348679680 wanted 0xd05bf9be found 0x2874489b level 1 $ sudo btrfs subvolume list /mnt2 | grep -v snapshot | grep -v docker ID 256 gen 1029644 top level 5 path home ID 265 gen 1029641 top level 256 path home/niko/.cache ID 912 gen 1029406 top level 5 path images ID 2428 gen 359129 top level 5 path var ID 2429 gen 1026054 top level 2428 path var/tmp ID 2430 gen 1029044 top level 2428 path var/cache ID 2433 gen 1029641 top level 5 path root ID 2653 gen 1029641 top level 5 path avd $ ls -al /mnt2 totale 16 drwxr-xr-x 1 root root 58 16 giu 19.09 . drwxr-xr-x 1 root root 198 12 set 17.50 .. drwxr-xr-x 1 niko niko 72 26 ago 10.22 avd drwxr-xr-x 1 root root 28 16 apr 10.25 home drwxrwxrwx 1 niko niko 96 20 ago 17.23 images dr-xr-xr-x 1 root root 196 24 ago 14.58 root drwxr-xr-x 1 root root 28 16 apr 10.21 snapshots drwxr-xr-x 1 root root 16 13 giu 00.10 var Apart from backing my files up, what else should I be able to do at this point? I've tried scrubbing but it's a no go: $ sudo btrfs scrub start /dev/loop0 scrub started on /dev/loop0, fsid d3d387d6-eb5e-4b4b-9a9c-581d74fb56b4 (pid=3255) $ sudo btrfs scrub status /dev/loop0 UUID: d3d387d6-eb5e-4b4b-9a9c-581d74fb56b4 Scrub started: Sun Sep 12 18:00:30 2021 Status: aborted Duration: 0:00:00 Total to scrub: 97.27GiB Rate: 0.00B/s Error summary: no errors found Any chance to recover the partition? Niccolò