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=-5.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 380C1C4360F for ; Fri, 5 Apr 2019 08:15:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E52CB21738 for ; Fri, 5 Apr 2019 08:15:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="kpzN3yxt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730069AbfDEIPi (ORCPT ); Fri, 5 Apr 2019 04:15:38 -0400 Received: from mout.gmx.net ([212.227.15.19]:53493 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726594AbfDEIPh (ORCPT ); Fri, 5 Apr 2019 04:15:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1554452134; bh=hAgn7+qdbpFdIGgZPti5K/13mWJcyVuAoAhup3ZsCnI=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=kpzN3yxtMNx5R0p2Tle1Pw/COYZYumSUJ486DKeaEf9ZatynE7EXkdmo1/U5uE0fN hL8RgYCZ4kuvJ2Et1noNZM5H/8tFd8OB7gfmnBy3wsXRwFzguOpAeYPa1FoRtTfIDT ZxHJBAltUJw81kyvFmH1mFpicAJad0ycExjeD+vw= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.com (mrgmx003 [212.227.17.184]) with ESMTPSA (Nemesis) id 0MYP57-1hPMqS0dij-00V8Sa; Fri, 05 Apr 2019 10:15:34 +0200 Subject: Re: interest in post-mortem examination of a BTRFS system and improving the btrfs-code? To: "Nik." , "linux-btrfs@vger.kernel.org" References: <9cf1e935-c0b1-6546-5f1e-f8e88839d560@gmx.com> <99c1632a-a575-b5eb-8a26-8f92666f9c3a@avgustinov.eu> <6c4d5ccf-562d-a9b7-3aba-0a3bfd3797eb@avgustinov.eu> <9a800f8e-a8eb-ea5c-328b-7aed53bc3742@avgustinov.eu> <7d605543-2899-144a-7b46-7caed803b43b@avgustinov.eu> <8fdb5da5-d649-0c0d-1a21-c3f430476afd@gmx.com> <3dcaf6ae-34c4-3760-70f9-6ce2962b42c8@gmx.com> From: Qu Wenruo Openpgp: preference=signencrypt Autocrypt: addr=quwenruo.btrfs@gmx.com; prefer-encrypt=mutual; keydata= mQENBFnVga8BCACyhFP3ExcTIuB73jDIBA/vSoYcTyysFQzPvez64TUSCv1SgXEByR7fju3o 8RfaWuHCnkkea5luuTZMqfgTXrun2dqNVYDNOV6RIVrc4YuG20yhC1epnV55fJCThqij0MRL 1NxPKXIlEdHvN0Kov3CtWA+R1iNN0RCeVun7rmOrrjBK573aWC5sgP7YsBOLK79H3tmUtz6b 9Imuj0ZyEsa76Xg9PX9Hn2myKj1hfWGS+5og9Va4hrwQC8ipjXik6NKR5GDV+hOZkktU81G5 gkQtGB9jOAYRs86QG/b7PtIlbd3+pppT0gaS+wvwMs8cuNG+Pu6KO1oC4jgdseFLu7NpABEB AAG0IlF1IFdlbnJ1byA8cXV3ZW5ydW8uYnRyZnNAZ214LmNvbT6JAVQEEwEIAD4CGwMFCwkI BwIGFQgJCgsCBBYCAwECHgECF4AWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCWdWCnQUJCWYC bgAKCRDCPZHzoSX+qAR8B/94VAsSNygx1C6dhb1u1Wp1Jr/lfO7QIOK/nf1PF0VpYjTQ2au8 ihf/RApTna31sVjBx3jzlmpy+lDoPdXwbI3Czx1PwDbdhAAjdRbvBmwM6cUWyqD+zjVm4RTG rFTPi3E7828YJ71Vpda2qghOYdnC45xCcjmHh8FwReLzsV2A6FtXsvd87bq6Iw2axOHVUax2 FGSbardMsHrya1dC2jF2R6n0uxaIc1bWGweYsq0LXvLcvjWH+zDgzYCUB0cfb+6Ib/ipSCYp 3i8BevMsTs62MOBmKz7til6Zdz0kkqDdSNOq8LgWGLOwUTqBh71+lqN2XBpTDu1eLZaNbxSI ilaVuQENBFnVga8BCACqU+th4Esy/c8BnvliFAjAfpzhI1wH76FD1MJPmAhA3DnX5JDORcga CbPEwhLj1xlwTgpeT+QfDmGJ5B5BlrrQFZVE1fChEjiJvyiSAO4yQPkrPVYTI7Xj34FnscPj /IrRUUka68MlHxPtFnAHr25VIuOS41lmYKYNwPNLRz9Ik6DmeTG3WJO2BQRNvXA0pXrJH1fN GSsRb+pKEKHKtL1803x71zQxCwLh+zLP1iXHVM5j8gX9zqupigQR/Cel2XPS44zWcDW8r7B0 q1eW4Jrv0x19p4P923voqn+joIAostyNTUjCeSrUdKth9jcdlam9X2DziA/DHDFfS5eq4fEv ABEBAAGJATwEGAEIACYWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCWdWBrwIbDAUJA8JnAAAK CRDCPZHzoSX+qA3xB/4zS8zYh3Cbm3FllKz7+RKBw/ETBibFSKedQkbJzRlZhBc+XRwF61mi f0SXSdqKMbM1a98fEg8H5kV6GTo62BzvynVrf/FyT+zWbIVEuuZttMk2gWLIvbmWNyrQnzPl mnjK4AEvZGIt1pk+3+N/CMEfAZH5Aqnp0PaoytRZ/1vtMXNgMxlfNnb96giC3KMR6U0E+siA 4V7biIoyNoaN33t8m5FwEwd2FQDG9dAXWhG13zcm9gnk63BN3wyCQR+X5+jsfBaS4dvNzvQv h8Uq/YGjCoV1ofKYh3WKMY8avjq25nlrhzD/Nto9jHp8niwr21K//pXVA81R2qaXqGbql+zo Message-ID: Date: Fri, 5 Apr 2019 16:15:29 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.3 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="hFAuMnX5eterJmFGRXTxj9SXE5flEB9To" X-Provags-ID: V03:K1:/jagW5jBCFsLK1ohobpVnjnNjNAZjd+cIXp4A58gZEGzrDTDKIZ BMgsxZNpX3BNWKh1I49J9daO6iQ7qzdPn1EbTmCCGePSwes8OuhCN/+/0tObLlj4s7+YT9c rSEmU9IiS0DgOK/+Wp0JAheKYi9IwmPfg6WgdrDPzcol9WetHFnJRV6FJ+CT3VKYzUJTvy2 qiTY2oGh6yM79ja/JI+Hw== X-UI-Out-Filterresults: notjunk:1;V03:K0:Z35+zWJXBqQ=:5nBzK+qGkdRw9W+NhyDWje cnfRq94YFXut0Uz0HZP4TBzU/PkB/hdox+FKQa2axKaeu6i9c9XQFXSrMEsDKVT5pVt3JaXHB dX61TFi/F/P1zt5x5GIlo4fOfsjpmBw/UTiTEJkwXygIpbh0QjqXklPHs7XjIgnFOCwcj4spU Pv1tmTM9rnZkB6yntls+if/OofhXKQFNG5LK8Z95obyREZhCFAFUD+GcelajRREXMsyEmdVBe y/0FGXh+JVwfP65Akqp0jjmu80zidar+GIFEy3Kw3ujptgxulf8wfF2cpuYftnJL8n1g4GNwo hV2HnRnbElM4A4gWgN+eTU1KPq5AtmOwlEXaH+eT/Nx7tybolq6cAU6WerVwYiUZilGNEIQnt UHCqDniuh3oEFaYs6MgTj7Echi1CZCfH7NubC9AVE4gZzCuLd8EgM5Fs72bjZoGS2kOWq4Pc/ dR0JzoEbKBDJmHA9Ah4KnSgHttVR3LI+7C3xi/U4urn3kTfS6pnxh555bk0BuY0gX+jIzh7Ia WGXEtus8FmQGbkcFO4IjVKg5AAAZgRY9Xs+st+zYiTBwaPVdLOQfpB+1+ZSN/0ua1+YcUzP3W ICtWn8p5oMQUnl8N48krnP/wwRmottR7EMjhfRMucUbJlRfypnjEqRQSskI0+MZxm4RhEQfZP NZYrw8wLPz0sSUD/ABoOziHiYNwGOlhIpl9DkA0sQ+na0QNtJoZ5I9dT0oK/GhuMBQIYUjXuH ld4R6EG2nWwv03CM44PHKOWW3z55ma+q3lVLehzF++cn/8XWZIhfCY4RAk4Z9PRKLr5hTGDf+ ThHyRPUEXIPUUCVnlLuHJQjYRlGyqJT1mXhZIMVg0nBoLZTGQWGUEZ24m+ZQ9ILLqJoQPcQer dpVQOYIiNhiVtsGX5wvzHNN5JBaEzB9RBMKaatJhPxKWz2ozjwHMIw7V/K+O7r Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --hFAuMnX5eterJmFGRXTxj9SXE5flEB9To Content-Type: multipart/mixed; boundary="b7ki9RoKl5ExyWDOMAWO088UFUm0z3pDs"; protected-headers="v1" From: Qu Wenruo To: "Nik." , "linux-btrfs@vger.kernel.org" Message-ID: Subject: Re: interest in post-mortem examination of a BTRFS system and improving the btrfs-code? References: <9cf1e935-c0b1-6546-5f1e-f8e88839d560@gmx.com> <99c1632a-a575-b5eb-8a26-8f92666f9c3a@avgustinov.eu> <6c4d5ccf-562d-a9b7-3aba-0a3bfd3797eb@avgustinov.eu> <9a800f8e-a8eb-ea5c-328b-7aed53bc3742@avgustinov.eu> <7d605543-2899-144a-7b46-7caed803b43b@avgustinov.eu> <8fdb5da5-d649-0c0d-1a21-c3f430476afd@gmx.com> <3dcaf6ae-34c4-3760-70f9-6ce2962b42c8@gmx.com> In-Reply-To: --b7ki9RoKl5ExyWDOMAWO088UFUm0z3pDs Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2019/4/5 =E4=B8=8B=E5=8D=883:41, Nik. wrote: >=20 > Below is the stderr of both commands: >=20 > # btrfs inspect dump-tree -t chunk /dev/md0>DT-chunk.log > # btrfs inspect dump-tree -t extent /dev/md0>DT-extent.log > ERROR: leaf 1894009225216 slot 30 pointer invalid, offset 146038 size 3= 7 > leaf data limit 16283 > ERROR: skip remaining slots >=20 > Since the output on stdout is pretty long even after gzip, I am > providing only the output of the first command as attachment. The outpu= t > of the second command (25 MB after gzip -9) can be downloaded here: >=20 > https://cloud.avgustinov.eu/index.php/s/AgbwWyCrbYjenq8 Sorry, I should have use a more specific command to get a smaller output.= But anyway, your output is good enough for me to craft the fix patch. Here is the dirty fix branch: https://github.com/adam900710/btrfs-progs/tree/dirty_fix_for_nik Compile the btrfs-progs as usual. Just a late hint, you can disable document/btrfs-convert to reduce the dependency: $ ./configure --disable-documentation --disable-convert Then, inside btrfs-progs directory, call: # ./btrfs-corrupt-block -X /dev/md0 If everything goes correctly, it should output something like: Successfully repaired tree block at 1894009225216 (And please ignore any grammar error in my code) After that, please run a "btrfs check --readonly" to ensure no other bit flip in your fs. Thanks, Qu >=20 > Hope this is ok. >=20 > Regards, > Nik. > - --b7ki9RoKl5ExyWDOMAWO088UFUm0z3pDs-- --hFAuMnX5eterJmFGRXTxj9SXE5flEB9To Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAlynDqEACgkQwj2R86El /qjGfAgAqw8lmq70lwnahGDRL3DIszN3ZkG8wqqY9awX+UexGfdbOTfDJz9vsz3J sVIeCwpDEDWU6o1jb0ZSoJ2HtWvMKONRgcNUfO2tEZ8g4VP5VC+k1Q+M+Uql35TJ gezQEibzr7VPs6WoH+ckiD3rlXEqNVMIWaDQVLS2VFYI1zpcBpgcJt34yn9of/zA 8TH0OsIN15ewRkL3e06mv5N4NTR7z8l7ZkWg3YDTtBWYGldB6RS7UF8B2OInS01r i3EtNIoVtlnNzc01V3DYUdQbNBjtt8+8jePabpO2rNcUY5zyF9W0kiQ33YZpKET5 UrHNv40oT99LlpWWoku4MAcnDVMbuw== =hMZb -----END PGP SIGNATURE----- --hFAuMnX5eterJmFGRXTxj9SXE5flEB9To--