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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A380EC352AA for ; Mon, 4 Apr 2022 21:25:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376883AbiDDVZ7 (ORCPT ); Mon, 4 Apr 2022 17:25:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46592 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1379713AbiDDR4F (ORCPT ); Mon, 4 Apr 2022 13:56:05 -0400 Received: from mail-io1-xd33.google.com (mail-io1-xd33.google.com [IPv6:2607:f8b0:4864:20::d33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1161F245BD for ; Mon, 4 Apr 2022 10:54:08 -0700 (PDT) Received: by mail-io1-xd33.google.com with SMTP id g21so12197606iom.13 for ; Mon, 04 Apr 2022 10:54:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=toxicpanda-com.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=5aXFOjsVwliGYhlBx1+QCDa1pQHtfy2+N5XXzrQtxMg=; b=cgXljmTb2YzfUu91m3Gr8Jbua/5PvNKZVVMOhdX7EaF2A8TRgLkobVuSiVuDL6rj9d ci/aH+Ivc4Zkzy3noXN/do9oIwgFVwDBUVhPvqDyp4DATpYnI7uoks26ju96mI6VS7bS TV6rzhnjo4kuovsQBiRUn5oOW4A0++bZYsaCVNcxBhNIC0KgKDdL4Rd7YTfyJDue50qY KCBLPW132ckjV2v/HRuBBoem1cZ3jFeBo0i1eGMG9gWEak/zcGV5RdRwWgm2vC8dxAun oLWXR78KgjMzuEyA89mX63FsoAXxVoi3hx44VqErfLAdsqZ3RuQ4tNkY3TpNyY5t4KJa kOMA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=5aXFOjsVwliGYhlBx1+QCDa1pQHtfy2+N5XXzrQtxMg=; b=xkTKl/gwY/4zMjPMkO5bNk9ZWKn42ixK29leQcu1CNhulbDt96jVIFCU4bcl0uhtiF F1nDXrDBPQi+AHzwoc7R1dwo/FoPXSQR89xU+pf1TcOYpdg6HNQijpeWD0lhptqea/EF Kl4p2pcEqgrSxZVi6slgdGrN+gD/0Segl3rU/c1AlbKG/v9UIAspu261nV6cS0oaxvzD IgaVWPk6jGt4iLMcR9eRpal7LCPTlZKIClZUgCRis+PN+fSQqPLaIDV7W98Bxqv0LdrI Cc7KSNspr+chMGTDY6E623PmPy080UaZxd1xSKmeSpgybgCFcNVBhMqpt7jhXJpsw4rk 3LCQ== X-Gm-Message-State: AOAM531Kci2W8FyNKUPriXBUNbvT+7GP1Qjcrm0QvJSma6EY5bNWRBAp sBuM253n6lyn8kAraHMLqG+Y0TUuKmHIo80Zq06IpT2uvTHv0A== X-Google-Smtp-Source: ABdhPJz36HiK2Osvz2blIJ/DBa7pVg5dEWWa0d3aUN99s7eEpq04YlJM7vAjRVqK6GYCWfrS24Bnk+7gkidgv28PrBw= X-Received: by 2002:a05:6602:2bc4:b0:645:eb96:6495 with SMTP id s4-20020a0566022bc400b00645eb966495mr666594iov.166.1649094847368; Mon, 04 Apr 2022 10:54:07 -0700 (PDT) MIME-Version: 1.0 References: <20220329171818.GD1314726@merlins.org> <20220330143944.GE14158@merlins.org> <20220331171927.GL1314726@merlins.org> <20220404010101.GQ1314726@merlins.org> <20220404150858.GS1314726@merlins.org> <20220404174357.GT1314726@merlins.org> In-Reply-To: <20220404174357.GT1314726@merlins.org> From: Josef Bacik Date: Mon, 4 Apr 2022 13:53:56 -0400 Message-ID: Subject: Re: Rebuilding 24TB Raid5 array (was btrfs corruption: parent transid verify failed + open_ctree failed) To: Marc MERLIN Cc: Andrei Borzenkov , Zygo Blaxell , "linux-btrfs@vger.kernel.org" , Chris Murphy , Qu Wenruo Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Mon, Apr 4, 2022 at 1:44 PM Marc MERLIN wrote: > > On Mon, Apr 04, 2022 at 01:18:48PM -0400, Josef Bacik wrote: > > On Mon, Apr 4, 2022 at 11:09 AM Marc MERLIN wrote: > > > > > > On Sun, Apr 03, 2022 at 06:01:01PM -0700, Marc MERLIN wrote: > > > > gargamel:~# btrfs rescue chunk-recover /dev/mapper/dshelf1a > > > > Scanning: 1509736448 in dev0 > > > > > > > > I'll let this run, looks like it might take a while. > > > > > > 14h later, still going on. I'll update when it's done, it may take a few > > > days. > > > gargamel:~# btrfs rescue chunk-recover /dev/mapper/dshelf1a > > > Scanning: 7049296592896 in dev0 > > > > > > Please let me know about the backup chunk roots that all seemed to be > > > the same and were apparently all pointing to the same corrupted version? > > > > Ok cool apparently we have code that does this already, can you do > > > > btrfs-find-root -o 3 /dev/whatever > > and then use the bytenr's it finds like you did with the backup roots > > gargamel:~# btrfs-find-root -o 3 /dev/mapper/dshelf1a > parent transid verify failed on 22216704 wanted 1600938 found 1602177 > parent transid verify failed on 22216704 wanted 1600938 found 1602177 > parent transid verify failed on 22216704 wanted 1600938 found 1602177 > Ignoring transid failure > parent transid verify failed on 13577821667328 wanted 1602089 found 1602242 > parent transid verify failed on 13577821667328 wanted 1602089 found 1602242 > parent transid verify failed on 13577821667328 wanted 1602089 found 1602242 > Ignoring transid failure > leaf parent key incorrect 13577821667328 > WARNING: could not setup extent tree, skipping it > parent transid verify failed on 13577821667328 wanted 1602089 found 1602242 > Ignoring transid failure > leaf parent key incorrect 13577821667328 > Couldn't setup device tree > Superblock thinks the generation is 1600938 > Superblock thinks the level is 1 > Found tree root at 21069824 gen 1600938 level 1 > Well block 21053440(gen: 1822 level: 0) seems good, but generation/level doesn't match, want gen: 1600938 level: 1 > Well block 21004288(gen: 1692 level: 0) seems good, but generation/level doesn't match, want gen: 1600938 level: 1 > Well block 20987904(gen: 1443 level: 0) seems good, but generation/level doesn't match, want gen: 1600938 level: 1 > Well block 20971520(gen: 1293 level: 0) seems good, but generation/level doesn't match, want gen: 1600938 level: 1 > Well block 21037056(gen: 1170 level: 0) seems good, but generation/level doesn't match, want gen: 1600938 level: 1 > Well block 21020672(gen: 773 level: 0) seems good, but generation/level doesn't match, want gen: 1600938 level: 1 > > Not a good sign I assume? > Can you do btrfs check --chunk-bytenr 21053440 /dev/whatever also I can't seem to find output from a normal btrfs check run, can I see that as well? I'm curious if we could just tell the super block the right transid for this and everything would be ok. Thanks, Josef