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 ED929C2D0BF for ; Mon, 9 Dec 2019 01:45:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AE495206DB for ; Mon, 9 Dec 2019 01:45:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="YyR/atJr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726748AbfLIBpg (ORCPT ); Sun, 8 Dec 2019 20:45:36 -0500 Received: from mout.gmx.net ([212.227.17.21]:52919 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726635AbfLIBpg (ORCPT ); Sun, 8 Dec 2019 20:45:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1575855933; bh=CYjc9BZQrZL5qQ7yTU8Y7WoZ7ZZg+nUQrErl0uWP8r4=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=YyR/atJrwEKS2WqQuFiDRa3NKbJRhaGj2cG8d6RZY/eRfLZJAF+GQY6eoJvyA1f9g JuQTaDslCBksjH5fUpDxpcwy8pMqgrSYulUbmenh9BPar8xVwtlN2VUJKNkKJD4ic3 n2UIFSyI7cVPt1rYlG73zVnovEP8RTMHZMCCTyz8= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([13.231.109.76]) by mail.gmx.com (mrgmx104 [212.227.17.174]) with ESMTPSA (Nemesis) id 1MatVb-1i2sLv23Mx-00cQY6; Mon, 09 Dec 2019 02:45:33 +0100 Subject: Re: Unable to remove directory entry To: Mike Gilbert Cc: linux-btrfs@vger.kernel.org References: <5eae7d6d-a462-53f4-df0c-3b273426e2b2@gmx.com> <6c3454b9-cc23-d22b-c3a7-59697add9b88@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 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: Mon, 9 Dec 2019 09:45:27 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="V7vRQIoewaNK0mexBaZKSTqnDRkO42TP2" X-Provags-ID: V03:K1:CDMGZMYT5DGcMBGCV04spl+3ZqLXBThEf0yg+G/k38vBHZoZMbD Ba8/9pJsp7GrjnyUcE8sIbM3TTi+Ev/0tPLX9QmgIz+BoJYQYIoBJjynwepfJzuuIyU2fBE XKLP5bTCPRXu14Mr5wcR2OnLfi1+iokLwxglRklbIo2r3NL/g3kLEdnc6NPdJeXKFC/Ovr6 RCAqXMdtIrakYtZvlwRpQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:Nt+FNMVeCxU=:sA0V9ItZL90es/wHhM2xQt 75mNqlTZhTHYEel1sX+SY320zFDgRRYMCcLabIDNoWNXjrSMp6gf+KWKl2ReC19uzJSvz4jse shv/PmWMfI5ZxwruwsNjQ9/cvYaiI8qdrluSxZ6b98vr0kNK/U/y0x445XMqStp4RGkC8Su8l o+r1a4jME1S3TXiF48hjDqd0B8fMqHeQmGnL0RF5eMx0HrXToNxIgfQ5FdRE35ebC4tti7gUe z1/iD2POha9kP8ENol4Cx+AxTFH0pHukqsPMgj3PePXm02Z7gYL2HMWhnUYg03yzcOtDBHNjk 6ONfTB7xEIzjmp1BdUmK7G3dUtH+3eu7JBHaDpaD8hcwaT8k2pUQXPaaroIc18/U8MYfvUOu9 QR0g94UktDuVQ3kfGuhiQI118YJqU1iZcAYM0mdqQXKVVbU54w73U1veCl1Ls6wrb2BDfc9y2 b9zs0+2WvrLB8I/2bWCN9Dt/g4JXBBlQsqXj1Zy4vDvq5Jgjz4F56zs6fdlTYFwx2chOccKq/ C7RcDTzaYAApda5PrlSYXEWJVciPmOuRYlhIArG6gdjx/ZYpL/iyT97tgGvHcLSTDPjnrsu0h A9zZkvOHszV2VhCsx9/SFTXOrVFiqwFT6P5rbVm738yqQnIXBJLLkGgEXewSed2kEeOOeK8DQ +PqUwkxvKFqd55iXf+nWcdkhVHQjdye1n2jIxs2NUpboWOYhomdTjWgEjGukCS+7OpSwJYeWn 2SIeCEEJLW1tXV2rhNoNVYfRzrXx4QZVFeFubxcph/a0g77416RV/TlxTuZ13naNjO7ELBTkp 00wtpYmTvy9giPeClxT3dtLkWtyWJ4sRZ5BdMgFt23ybcPlHVjSKx2eE7At+Swkh1ArO9JT6V KXrJGe5o5gzDDTFGlcmoGe0XEyO73AhizQlweM0sMR8M8BrJfe+Mg273SbjnES2B/vhj3IATx h303SpFjtSf7G2zr7szq6OyA+iZiHOew/kDO1W4FhnMokO63Cuj0AQibH5QINA3Qa3yXNMRt2 xzp+Kvr2mZl/+HTDjU3aJCB/jZrx6CvHy+I34kQxreWjpfLCXMr5OlXULVbP0qNZXq8jULcY+ +vCOujSBDG14pY/pYI4lEnxOc96j14Gx+PDDpt+OkCJ21g5cA8w86qFpttS6NC55xMkSucUoQ RD9KOvjB/dRkP3yU1c4HlgUhRKoyz2yVS1nnselPbOML8ywaI34Q4UGl2oEzZClaOdqgrbnM3 zWSyHoUMeQZC2jiPa4IhrcAFTY6p7JgQUsUYav4tpIbpJ3OwejHgXH26TVAA= 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) --V7vRQIoewaNK0mexBaZKSTqnDRkO42TP2 Content-Type: multipart/mixed; boundary="bNzlKz6Z2Tutt2MR7bwT9SoCpsaQwyE3D" --bNzlKz6Z2Tutt2MR7bwT9SoCpsaQwyE3D Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2019/12/9 =E4=B8=8A=E5=8D=889:31, Mike Gilbert wrote: > On Sun, Dec 8, 2019 at 7:41 PM Qu Wenruo wrote= : >> >> >> >> On 2019/12/9 =E4=B8=8A=E5=8D=888:30, Mike Gilbert wrote: >>> On Sun, Dec 8, 2019 at 7:11 PM Qu Wenruo wro= te: >>>> >>>> >>>> >>>> On 2019/12/9 =E4=B8=8A=E5=8D=883:19, Mike Gilbert wrote: >>>>> Hello, >>>>> >>>>> I have a directory entry that cannot be stat-ed or unlinked. This >>>>> issue persists across reboots, so it seems there is something wrong= on >>>>> disk. >>>>> >>>>> % ls -l /var/cache/ccache.bad/2/c >>>>> ls: cannot access >>>>> '/var/cache/ccache.bad/2/c/0390cb341d248c589c419007da68b2-7351.mani= fest': >>>>> No such >>>>> file or directory >>>>> total 0 >>>>> -????????? ? ? ? ? ? 0390cb341d248c589c419007da68b2-7351= =2Emanifest >>>> >>>> Dmesg if any, please. >>> >>> There's nothing btrfs-related in the dmesg output. >>> >>>>> >>>>> % uname -a >>>>> Linux naomi 4.19.67 #4 SMP Sun Aug 18 14:35:39 EDT 2019 x86_64 AMD >>>>> Phenom(tm) II X6 1055T Processor >>>>> AuthenticAMD GNU/Linux >>>> >>>> The kernel is not new enough to btrfs' standard. >>>> >>>> For this possibility name hash mismatch bug, newer kernel will repor= ted >>>> detailed problems. >>> >>> Would 4.19.88 suffice, or do I need to switch to a newer release bran= ch? >>> >> I'd recommend to go at least latest LTS (v5.3.x). >> >> .88 is just backports, nothing really different. And sometimes big fix= es >> won't get backported. >=20 > I upgraded to linux-5.4.2, and attempted to remove the file, with the > same results. >=20 > ls: cannot access > '/var/cache/ccache.bad/2/c/0390cb341d248c589c419007da68b2-7351.manifest= ': > No such > file or directory > total 0 > -????????? ? ? ? ? ? 0390cb341d248c589c419007da68b2-7351.man= ifest >=20 > rm: cannot remove > '/var/cache/ccache.bad/2/c/0390cb341d248c589c419007da68b2-7351.manifest= ': > No such > file or directory >=20 > I don't see any output in dmesg. Is there some option I need to enable?= >=20 Then it's not name hash mismatch, but just index mismatch. In that case, kernel won't detect such problem by tree-checker. I'll update tree-checker to handle the case. I guess the only way to fix it is to rely on btrfs check --mode=3Dlowmem --repair. But before that, would you please provde the following dump? So that I can be sure before crafting the enhanced tree-checker patch. # btrfs ins dump-tree -t 5 /dev/sda3 | grep "(4065004 INO" -A7 # btrfs ins dump-tree -t 5 /dev/sda3 | grep "(486836.*13905)" -A7 # btrfs ins dump-tree -t 5 /dev/sda3 | grep "(486836.*2543451757)" -A7 Thanks, Qu --bNzlKz6Z2Tutt2MR7bwT9SoCpsaQwyE3D-- --V7vRQIoewaNK0mexBaZKSTqnDRkO42TP2 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAl3tpzcACgkQwj2R86El /qjNeQgAky94FRPOXDdHPN6c7mucCMqy+HO91+oqb9/z3Ke4WcQDegKi/AnD7PIv HzXzxVfF93q02Fz01xtGtbejxwtp5kSnsCTPMUFVSYTZAYZ7xyJmhu3Poz/PRcBy CWndPhqB7DErQBgxAOOKDxFEbwoF/oxdRtjrGaHqIHWZp/Sshy7SOB9JPK6UmOOS UBemeK1wTH3S2AobeDuIlhQFPq2ArYdhs9WC01DDW/OjLeh89jogi21XmMW2YSxN mTmGgGAZFoUY8wNjSqtwbKPb49WH2Ri6Eui4SlfDJdYBhdiLc17CYUVJaYR/qwgy 4d2K+duL9pe2FpbFI1B+4cZwFOxsUA== =7ka4 -----END PGP SIGNATURE----- --V7vRQIoewaNK0mexBaZKSTqnDRkO42TP2--