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=-2.0 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 65AABC32771 for ; Tue, 28 Jan 2020 01:23:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2519B214AF for ; Tue, 28 Jan 2020 01:23:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="aq7EXvcz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726240AbgA1BXt (ORCPT ); Mon, 27 Jan 2020 20:23:49 -0500 Received: from mout.gmx.net ([212.227.17.21]:36767 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726173AbgA1BXs (ORCPT ); Mon, 27 Jan 2020 20:23:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1580174626; bh=Yh3bZ0G1BbOXzg7FlsC9zgcbv1yhXymZvoDurOM3fT8=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=aq7EXvczNLmC0FZU4zOWilovYgiGGYnwnE5XTgSx3cRk1kcnwqmqaZUMKbxoqzkgZ PgMSwRMzU+LJ+4SY7VAk7vwJ8iK0DyHrAyOUhELqdBLqgh11qeilKTiC39UmKFNy7t cCwUWxTsL4Lx7qNWnfZiiBxO9kO1djXb/fHCjD3E= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.com (mrgmx104 [212.227.17.174]) with ESMTPSA (Nemesis) id 1N5GE1-1jcplM1m0j-011AAm; Tue, 28 Jan 2020 02:23:46 +0100 Subject: Re: Endless mount and backpointer mismatch To: Pepie 34 , linux-btrfs@vger.kernel.org References: 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 AAG0IlF1IFdlbnJ1byA8cXV3ZW5ydW8uYnRyZnNAZ214LmNvbT6JAU4EEwEIADgCGwMFCwkI BwIGFQgJCgsCBBYCAwECHgECF4AWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCXZw1oQAKCRDC PZHzoSX+qCY6CACd+mWu3okGwRKXju6bou+7VkqCaHTdyXwWFTsr+/0ly5nUdDtT3yEVggPJ 3VP70wjlrxUjNjFb6iIvGYxiPOrop1NGwGYvQktgRhaIhALG6rPoSSAhGNjwGVRw0km0PlIN D29BTj/lYEk+jVM1YL0QLgAE1AI3krihg/lp/fQT53wLhR8YZIF8ETXbClQG1vJ0cllPuEEv efKxRyiTSjB+PsozSvYWhXsPeJ+KKjFen7ebE5reQTPFzSHctCdPnoR/4jSPlnTlnEvLeqcD ZTuKfQe1gWrPeevQzgCtgBF/WjIOeJs41klnYzC3DymuQlmFubss0jShLOW8eSOOWhLRuQEN BFnVga8BCACqU+th4Esy/c8BnvliFAjAfpzhI1wH76FD1MJPmAhA3DnX5JDORcgaCbPEwhLj 1xlwTgpeT+QfDmGJ5B5BlrrQFZVE1fChEjiJvyiSAO4yQPkrPVYTI7Xj34FnscPj/IrRUUka 68MlHxPtFnAHr25VIuOS41lmYKYNwPNLRz9Ik6DmeTG3WJO2BQRNvXA0pXrJH1fNGSsRb+pK EKHKtL1803x71zQxCwLh+zLP1iXHVM5j8gX9zqupigQR/Cel2XPS44zWcDW8r7B0q1eW4Jrv 0x19p4P923voqn+joIAostyNTUjCeSrUdKth9jcdlam9X2DziA/DHDFfS5eq4fEvABEBAAGJ ATwEGAEIACYCGwwWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCXZw1rgUJCWpOfwAKCRDCPZHz oSX+qFcEB/95cs8cM1OQdE/GgOfCGxwgckMeWyzOR7bkAWW0lDVp2hpgJuxBW/gyfmtBnUai fnggx3EE3ev8HTysZU9q0h+TJwwJKGv6sUc8qcTGFDtavnnl+r6xDUY7A6GvXEsSoCEEynby 72byGeSovfq/4AWGNPBG1L61Exl+gbqfvbECP3ziXnob009+z9I4qXodHSYINfAkZkA523JG ap12LndJeLk3gfWNZfXEWyGnuciRGbqESkhIRav8ootsCIops/SqXm0/k+Kcl4gGUO/iD/T5 oagaDh0QtOd8RWSMwLxwn8uIhpH84Q4X1LadJ5NCgGa6xPP5qqRuiC+9gZqbq4Nj Message-ID: Date: Tue, 28 Jan 2020 09:23:42 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.2 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Du019uz41PmJu4y3jbXLURGZVilUMNdzA" X-Provags-ID: V03:K1:8muAuguFJz5zssCrh2Vr7v05jdy4hH437pbkGuORYjj0ixieFIH Ec0597yVfO7FZ+q02WnLpXnWPiELTwBQDEjTm6DV1UKrAUHu2LjXEpi9oSS00Ot+wW5aWS1 +kgYo8m2g0KVnS4KUEAbVYAeyba75n4r/4XvP/7MaMMEYoWJ9kTrMcsfdb6px0ovoI5XTUX VB89HsFt6uXaU6IWVRr0w== X-UI-Out-Filterresults: notjunk:1;V03:K0:6AMYCvo6quE=:taFrAuWeNDGl728h0xmMI7 hSzafqYqtXCBKpXOiGEsiVhijgpXVFIrKvFVJvmTpYvoDzJOuEX+zRC2b6ErUP/Rbk24zi6A3 mSelAKVaYEaTzE1HIHcPSDFIX+tDkPpNr/nXKEnChdjJ4GqpAbdAPK4nYQz0XUzbX4/D2TFCL B0wC4DihRiwKWMZ7oqfxnJsRrDPcvPlyx0XKhwhf44ZAikCZxmWwdfUWgmt+sCsgjMhkYPJwh 6N9McOB+mW1Uj3Y7Nn3ZsPcUJ2/1HyXq3KOtXCw4zFc5iuJNwcSMNssiqIgbmDVXmIBZbH6cl jh9skpOZbbJXvR4QevmTQG1BS94MlfZ4RG6mvQzHZiSyYBXmcM3l5IoBKRa2dUQShxFAFop3V NpDXJ/ErFyptCJGjPdePk9klX+0n/9gprxwDifKxKEM5B4HileOUSWefVTpfaV15lrFUgAoZ4 5w2los1lj26eHqGqakRM6vhMfrAY2s8oPQEh0qL6OPPczHpmLdcmgK4aLa+97M+X0Iutq+xOu +nx2uRmT1m1azHxgyGeX1KQkMFEWlLW4t6kTzkEgPkRVVbt1MtI+on2XrOz5voeMeGcs4qOcH /KyCR1Eu6rzhDBbKN/mNguCIB1EX8dS8N9Q5bp+FFmqWJ8U0Ta8cRGlhe3kiC99JnfY5Kd13m NQyoyhC8431+NaV6qxnSxRolAOndbS2M+xOSkQiLtVMkadE2Bw4F6nL6z8cIal7ProfB3XPts VoLLIXL8Haonkl3TTjt0s4LYDEV0fK1Vebz6Q1jxTzIcWJkFZu1hDcktAY3uyqshg3CQddQua lakPQAO5Rrs0Dq5F5hhR5VWx8o9tv2dgXC0JwZ3/D/ylDl/jVt5eWLpRAiRkz76dfGk+mp0EW 9CZsf6EFwFjX7WjOU2UeH3oGdzttbzD217e+YYoW2Yu4Ukicam69TdondSwjvI2nk1/HKm+tS LHYspYfq6SJ2dvJL4PeLPTHkD97QsVyeLIbsDv1tDCsYFJdJuS0z1RKUOSB6rorh2SS0kiOKh hpkwkFsf/h3b3y7C29cGJIA8cDRH0Lt2qlckh69NlSkiNcZdAWU+eiSAaTAIid7QgKr1Ebuna H6E0b7D09oyL477Ar+ukrTaUm0jCx1UywC5xpE8eyyzeLyPSfwCEt55VKtS6pH5A9v3tMHG5M 6v37Rkm2PKJaj2DhHt+PY7SNIAqzGvl2/C7eOaNdnySKLbqMuYJp+BALpTmW/A5Kou65SOHvF r36Ak6utBTc/PXgJu 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) --Du019uz41PmJu4y3jbXLURGZVilUMNdzA Content-Type: multipart/mixed; boundary="KZWnnGjsifmS9sGmWwPMeV1Ig1DX3O41s" --KZWnnGjsifmS9sGmWwPMeV1Ig1DX3O41s Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2020/1/28 =E4=B8=8A=E5=8D=885:20, Pepie 34 wrote: > Dear BTRFS community, >=20 > I've a raid 1 setup on two luks encrypted drives for 4 years that serve= s > me as btrbk backup target from an other computer. > There is a lot of ro snaptshots on it. >=20 > I've mistakenly launched a balance on it which was extremely slow and > tried to cancelled it. > After two days of cancelling without results, I decided to power off th= e > computer. >=20 > After the reboot, even with the skip_balance mount option, the mounting= > is endless, no error in the kernel message and it never mounts. Is there anything like "relocating block group XXXX flags XXXX" ? >=20 > What I have done so far: > - mount the volume with the ro option (fast to mount, data OK). > - scrub in ro mode, no error found So data are all OK. Just need a way to cancel the balance. > - btrfs check > In the extent check there is plenty of errors like this : > =3D> > ref mismatch on [9404816285696 32768] extent item 6, found 5 >=20 > incorrect local backref count on 9404816285696 parent 5712684302336 > owner 0 offset 0 found 0 wanted 1 back 0x55f371ee1ad0 > backref disk bytenr does not match extent record, bytenr=3D940481628569= 6, > ref bytenr=3D0 > backpointer mismatch on [9404816285696 32768] > <=3D It could be caused by half-balanced fs. Need to re-check after we cancel the balance. > No errors in other checks, though checking "quota groups" is very slow.= That's caused by the nature of qgroup. >=20 > What should I do ? btrfs check --repair ? > btrfs check --init-extent-tree ? > btrfs --clear-space-cache ? None of the options should affect data, but none of them are recommened. Since the problem is about the balance. Have you tried to mount the fs with RO,skip_balance, then remount it rw? Thanks, Qu >=20 > Will the "init extent tree" option break btrfs receive with old snapsho= t > parents ? >=20 > Best regards, >=20 > Pepie34 >=20 --KZWnnGjsifmS9sGmWwPMeV1Ig1DX3O41s-- --Du019uz41PmJu4y3jbXLURGZVilUMNdzA Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAl4vjR4ACgkQwj2R86El /qjpAwf/S8GbahAxRFtm7eT64VUuDwaAESdBQZRUm+Pxiz8Z7MRouEcrzO5DNC7Y DO9G43vWjKWp3WQZRD8usE0qh9jBqD5XfEl8GSycYvYU5BfIOT9xzlXi0uJ140VD UdIDgnJkF0twd3okGWHJ9ywyiBEDwVEdtbA5/MUz1NUEcbYuLl6eCw/bJ7Gbbma6 S4JcLWek9M5JpTo8L+CJOEM65BmSkrBDIfuzbakq1TEo0MrJLdCwBeHIhVJubrF8 +S7Zhifi5F9fpIVVfES4UH5jcj59Qr+hOrUhr3oo6989w9Pi2vVqM2qG75KWp2JJ T4PYWZSvDmBKWb25qtXMR5Mcgoqilw== =yHS8 -----END PGP SIGNATURE----- --Du019uz41PmJu4y3jbXLURGZVilUMNdzA--