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=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 71466C32792 for ; Tue, 1 Oct 2019 01:54:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 345362075C for ; Tue, 1 Oct 2019 01:54:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="gJouaG69" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726425AbfJAByE (ORCPT ); Mon, 30 Sep 2019 21:54:04 -0400 Received: from mout.gmx.net ([212.227.15.18]:45151 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726106AbfJAByE (ORCPT ); Mon, 30 Sep 2019 21:54:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1569894837; bh=RSfCwL0WdX+4m0w73uqC5eg773CEj5eCzvl5InDLoBk=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=gJouaG69PUPD/XVLkQJMDSj4w/48zaS8Cf1Hbtoe0a6vzc6p9UXfCu4yTzYNkylYQ ZuWt6Hvx4zQlCbHnqPdDtx0NhuB1i2BtdOjV80NEppdGV0XSeeVGIFUPPNDeTNdoy4 E2pK2ISIQ0yBLp5+KVqGXJW6TirGhsgBHkPpok6s= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([13.231.109.76]) by mail.gmx.com (mrgmx004 [212.227.17.184]) with ESMTPSA (Nemesis) id 1McYCl-1hjMuf2eKb-00d1m2; Tue, 01 Oct 2019 03:53:57 +0200 Subject: Re: BTRFS corruption, mounts but comes read-only To: Remi Gauvin , linux-btrfs References: <1d65213e-6237-2c5b-4820-81a0d3bd3e53@georgianit.com> <44df5407-b7c9-bbd1-eae0-d5ebf6ad75d8@georgianit.com> <6022d6c9-3022-01fd-3b97-67bd08ce36f1@gmx.com> From: Qu Wenruo 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: <8d765abc-b9f6-066f-8327-bcfc9a156177@gmx.com> Date: Tue, 1 Oct 2019 09:53:51 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="FDWQv2pF6mZVKEZL6jmYC4sCespg6mEZe" X-Provags-ID: V03:K1:GZg2vXTIkj/OIrla/wElYTDt/7CQzpvZP0UUNaL4I0YGE/8P1kI nA4fUUDozMWGwHkxUrJtT4qTy0y8X/IPVG802B7H8XO33GIup6W8gIt9AVpKVxFi52RSjbe 52gZWzWiFSas2iphWMT0leD1Xb9rhKq6PRDc/1RI533QJ7rsNktdpt3kfpanCy0w1N6ISm4 ESn3AEHEM9Bz8AwQ+ahrQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:TWCwsfQ3w/g=:5onBdz26T14WlFldsUYc8V DyZai+fSoHDVDg62GrJe6Iv9fB/cxumOvYzR19EAb523QPRGBvpuffeaWa5sxZ+VjNsBLTVi8 PSJ3IBbJKzN15hpkBP1fZtcwdlxYR0v78cnpy+9IsyXT96Y6pUVQ+j5v37QrB1H9sUa9q8odY rl6asCOre6Vbe9zQEvJaalR0J6gLPdFIlKA6+jONBvnFyUvR5lscyNprA4GIOYZ/51nGtNjwX fIgWbYFzXSazELokn6DFKXEtO0O9ufYZftYJaZa0dyX0i/rGXMxTL3s7KWS6SkC7NaLVQNKvQ zx/q7Rg+uo2cMjGImqkeCtdZCzsbJ5HVmbRzAZ7eMARpv2SlHOGD23SMjOhbujDvazadlKCdZ OEDuE2qMOnOo1VwP4OR2eAGTSCnzOrvFbbnLRNRsk8Mn/lf7ph+jR8osstJKk5nhcE8Afp/HR 03Rs7ZIyd3a/3EaUxJeIsPChBg/QIZkcVNeb+7YpreYJjUTP45cEakRV0IjhhZOihJl/wE7bD GKrN2Tyf/oC4sqorjCNKXFO3sKgom7TRZWFqZ/VvUwEiGwrCV/umL+0j2IlP/8XajUU6MoJZb t+2GUu0lQLWuUqVVY0HjIwHS7uuQVl7xVzUbPAPdHBaHyq8+de2rILjMUN3qw8Owf3iRCWveq 9WvusH39QYOCpeXICTbV9fQGVLz+DmnwpJ1ZVmYc72rR/1NwYjq7kyEMcp3spS+NGq0RvpXGt 9Gm7NCB+1blT9F6yJy4UIdV+9wtZskhtZuJtums+aNmewb3KTkSnSzysJE7iiWu4b4Yl2v6SC 2kqUNNDbKBYrnwVXzrRy18Ubja+X00hNYrNG5AwKB9RrFFdmKq6H7Q1Eexk4Mwk4txbsNCweH LBKXx164tLBmIlyV1YaFXqaKfHJVF1eiEcXGgHJxdgBHWebYaI5yK0omROJeRf9hSGcdcrX2i 5+Gg6dIIwC9cyT9clA8fAp7K2/szm7k/O0EvKOm3SMqAjjutKyaABvUtDlsP/ZdZu3K+EgbDh Z++rknBp8mAHhPi/2DU6R0B1vWCHKfHCkDEBqZ+qmVzFf9PnUgXPM9/eb2/KMTsfdYRtnEeyF ft5IgX029DSCZHlU4JKhlq5zNuamcO8cV2ynxQHs3raZ7SndLC57J4oSW8E3xIb6j0UWVkuGq 9X6vWLlKpyoTVAuQofR267rt914OEFYVjm/AXguCcL6hTG8CS1vUtItI0jBpDyH3cj6OJnh9D pB9oQRlYguShH4RnARq/U74aIuyw0eTCCRqSNI2CO4VZvKbVjLCs9g6MEnIo= 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) --FDWQv2pF6mZVKEZL6jmYC4sCespg6mEZe Content-Type: multipart/mixed; boundary="qf0PKutSJXxL6ZRVo0ZVh33mQD3U4KZVD" --qf0PKutSJXxL6ZRVo0ZVh33mQD3U4KZVD Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2019/10/1 =E4=B8=8A=E5=8D=889:41, Remi Gauvin wrote: > On 2019-09-30 9:30 p.m., Qu Wenruo wrote: >> >> >> On 2019/10/1 =E4=B8=8A=E5=8D=885:08, Remi Gauvin wrote: >>> Mounting the FS after that btrfs check, kernel 5.3.1, here is the dme= sg log: >> >> As that btrfs check shows, your extent tree is corrupted. >> Quite some backref is lost, thus no wonder some write opeartion would >> cause problem. >> >> In that case, it looks like only extent tree is corrupted, and no >> transid error. >> >> If you have data backed up, you would like to btrfs check --repair to >> see if it can repair them. >> >> Thanks, >> Qu >=20 >=20 > This is itself a back-up system, but not wishing to tempt fate, I'm > going to have to create a working substitute before I do anything risky= > with it. It would take me several days and lots of travel to re-aquire= > them. >=20 > Any idea what could have happened? Maybe some existing bugs, since it's an older kernel. But at least, no tree relationship corruption. So you should be pretty OK= =2E You could try btrfs check --init-extent-tree, as I see no error report from fs tree check. Since it's extent tree only mismatch, you can in fact mount the fs RO and grab all data. > The data and meta data should be > raid1, and none of the drives have any io errors of any kinds in their > SMART log. It's indeed a symptom of btrfs kernel module bug. But at least looks repairable. Thanks, Qu >=20 > Thank you for your guidance. >=20 >=20 >=20 >=20 --qf0PKutSJXxL6ZRVo0ZVh33mQD3U4KZVD-- --FDWQv2pF6mZVKEZL6jmYC4sCespg6mEZe Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAl2Ssa8ACgkQwj2R86El /qikkQf/Sg61y+8aLCMK9vBzp5vakDm+IsOEL47OGPw1QzJ/u9Ae04+6zgFx0ya9 f0E8LqXihHTQyDPR9EEIyl9bVG6AswQffo7/S0QspHV5IJAjpD3rW3/y4Yiw+K23 PQongbHf12enYttCnzEPbtdhVAC+LnEouKtnOPZ2EZIXeWCLaqWN/jqO9/Nm/79m Msmg/+OtDBeOg+dekOVW10LmxvW4tZJjN7bLJBQs0z4VJ9545lpHNDKh3hl8D9OI bmLImTtcFQ6PtfLc5ZT3eAGamWHEVIG/zjgkaKbZ25V2A0YqQfs4eIvqU5/SnclE o4WG5aKG84rlrTEd+IUYUpNSMLQjCA== =y5zm -----END PGP SIGNATURE----- --FDWQv2pF6mZVKEZL6jmYC4sCespg6mEZe--