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=-2.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 7681CC12002 for ; Sat, 17 Jul 2021 01:00:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4F98E613C0 for ; Sat, 17 Jul 2021 01:00:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231837AbhGQBC6 (ORCPT ); Fri, 16 Jul 2021 21:02:58 -0400 Received: from mout.gmx.net ([212.227.17.22]:44797 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229566AbhGQBC6 (ORCPT ); Fri, 16 Jul 2021 21:02:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1626483600; bh=xjCpgmbh06P1JxGIzfNsARINXnpvuWYKA3rBCpamiOI=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=ibDaskID+9EEuAYcnNl70xwi674vouIK3WKyJl/RbU4l03RcXNoMRVGILKx445rqC c13mWZwYFiFOdDJbUcfY//xAkWDqlY2K39AS68DCeGr2ah2AmUMha+wrn9Z8FXsc8k e8ML7psEF5ZobaD36lJhXWR94TA4C/VetYaT1ITk= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.net (mrgmx104 [212.227.17.174]) with ESMTPSA (Nemesis) id 1McpJq-1lUwgP1Ro2-00Zyub; Sat, 17 Jul 2021 03:00:00 +0200 Subject: Re: bad file extent, some csum missing - how to check that restored volumes are error-free? To: Dave T Cc: Qu Wenruo , Btrfs BTRFS References: <3be8bba9-60cd-2cce-a05d-6c24b8895f3f@gmx.com> <43e7dc04-c862-fff1-45af-fd779206d71c@gmx.com> <520a696d-d747-ef86-4560-0ec25897e0e1@suse.com> <88005f9b-d596-f2f9-21f0-97fc7be4c662@gmx.com> <6982c092-22dc-d145-edea-2d33e1a0dced@gmx.com> From: Qu Wenruo Message-ID: <062c20ad-ea9f-f83f-ce49-0a82668c3c6c@gmx.com> Date: Sat, 17 Jul 2021 08:59:56 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:qjEh26riptHxFDov2NEchBi+YKVhtcswDmkbvE21rQ5rCM3Uxlt lljxX1mw82R04/nU9QXWR/czX+rFZUmNapSfW4Ws5dq3IX9nFX6WbfjVy62zDFl2oC/fZKo qg/MkOHCQK2DeRtoj5G/3nYINRqv1RNiBiANqiFuza1zFvA6E8HktMtNlotrYzSm7MM7PHc YDRuMidAhva2v3eDFldQg== X-UI-Out-Filterresults: notjunk:1;V03:K0:yWgkrvVlSCU=:V1AmAdBcLOUyGsoLxvIXj9 9oiIY8fk00DGFYuoT4gsxNb0ySofZiY4JVQmmbr+IPuxM49iRFDKd64Dko67dWykN4QWH9yZv mhYh2mkvUp4quoj14C2bGK6eZEBiqpkVrZ7pvZsXTUFOGrwTHN9s4bKb247LDY0ii1knxrjlA 3qZfQ8m4AV1dhaxzkOvm+cqe36K8JAAIhyjRdBMrGAjNYwuQpasQPsGXsZ6St+P8wUdmKeyx7 OOXu0+/he/Bu4S/7NL4rLhpXW+x3iwKCanw9BaW5YyXXPkaGRc1E6pjL4Dyb3VqSnH+O4OkTa XeqtrmIMsllS0OYTGS8eLafaBwRf58E6N/o12uAfeDICO0ypU7kidRIpx0KVLn8i1MmN+GRDG bCImH9YIJZc+6EZs+KIqH4qfoaU0mZAlxsxBUfy2W27hjAi5PARf04HLzuP98f7T+qWg6idyF DRPAMlXcN25AKyw0k4RwnMwPS0JmVwROcf+vs9EhxBGDrwBsI2kjKDmQPV2Le8fAr3csR4mU+ QLV4l4G6jm0w9sgGsQ+lIiOhCCmfVk4MvQK5kc9eIgd7kx/ZbK6rH6NxCaZ/XAcghMACMre5r sZ2QnJ2HKhRJ4csPnNozzDcHFSRch0s6E95x++tcSeLNPMXCFBppKfTmHIBmhJYbswfUDliaP aZPMkmOIvcm9ZSy1JtOA3N2Ym3OCyJqQrJktJW9Q+E3hmBRrKxI1NzbVNPNq9mvziR/2IN2Kx Hxm6gRmAqYx9zH+S1QwTMzOuaDGqpG/JgBDXnriCfvxpHReCK1I5Voj/pZ6Vw/Wa64e2TZB8r j/BkhSgwx5iYtLYqYAyS8dAJo60AAt/OKJLyeAfdNESgcuVZ4iSQ+GRomx8dGcLogwFPCPRjG NPA1D/DIgW+CcJJiHBqxVBwtkk8p+IT8cwIgtwU+De7beyo22awPh1w3fx6hi1StyFORiOfV1 ZWSFH600+F6OvAAP3uy6KUWb1EvkOp5xev6304oxIk98sjTBJBS/KA2FLo/3/lgadB1gRrwfG AIhU6Hpb6OSWquBYXGnJOayC2efTO2yLnafN1icLmLoi1PMx3tHhhMvOhRObGaP5E2g58XnIo e3tfoUbkWOzk4G9jRP9+HtBB+r98U30Hg3ynGmppD89ZGgNxrQzlw0B5Q== Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 2021/7/17 =E4=B8=8A=E5=8D=888:57, Dave T wrote: >> But before that, would you mind to run "btrfs check" again on the fs to >> see if it reports any error? > >> I'm interested to see the result though. > > First I will send you the full output of the command I ran: > btrfs check --repair --init-csum-tree /dev/mapper/xyz > It's a lot of output - around 50MB before I zip it up. > How about if I send that to you as an attachment and mail it directly > to you, not the list? It works for me either way. > > Next step: I have remounted the old fs and I'm going to run a scrub on i= t. Scrub shouldn't detect much thing else, but it won't hurt anyway. > > Then I will unmount it and run btrfs check again and send you the > output. Again, I'll send it to you privately, OK? > That's fine to me. THanks, Qu