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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10463C433F5 for ; Fri, 12 Nov 2021 00:06:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CD8B26124C for ; Fri, 12 Nov 2021 00:06:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234342AbhKLAJM (ORCPT ); Thu, 11 Nov 2021 19:09:12 -0500 Received: from mout.gmx.net ([212.227.15.15]:50327 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233817AbhKLAJL (ORCPT ); Thu, 11 Nov 2021 19:09:11 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1636675578; bh=Yt7X/ThVJM6nNxFXiN5wGZW50ZI68BS7QpY+dKwTszA=; h=X-UI-Sender-Class:Date:Subject:To:References:From:In-Reply-To; b=ND4RhsL6lSwPuVmnkyLLsR5KJ0MeH4bZ7DjHAogHsjFrcN5zSCVyJDUG48VykRv5/ VfEH1AJQdLkwt5AWJFxpf8rVXqGENIggL3xzftwu19JcoMpaqmacMxc7Ved4+qBGxy FDoQZXnX7hH+DkY+Jiut71mfPeh/MJwQ/IZBF2PM= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.net (mrgmx004 [212.227.17.184]) with ESMTPSA (Nemesis) id 1MMGN2-1n2Qxg0jZO-00JIxA; Fri, 12 Nov 2021 01:06:18 +0100 Message-ID: <873ea73d-c3ab-9471-de22-5555980ce1ee@gmx.com> Date: Fri, 12 Nov 2021 08:06:15 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 Subject: Re: Upgraded from Buster to Bullseye, unmountable Btrfs filesystem Content-Language: en-US To: "S." , Qu Wenruo , "linux-btrfs@vger.kernel.org" References: <37379516-cc7c-b045-ad2e-15c669a60921@gmail.com> <179e61f7-82c9-0a5f-1a05-7c0019b4f126@gmail.com> <76156d73-9d4c-a473-4dd2-105a905d3d1e@gmx.com> <1f4db1f5-2f37-0074-cbe8-e78ba7836587@gmx.com> <4f7be37a-502c-6ee1-2519-29b84810999c@gmail.com> <725543aa-029d-c22e-0ac8-bc77637c0474@suse.com> <73fb26b3-932c-9592-bced-6a3fda3456f0@gmx.com> From: Qu Wenruo In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:lpxjnmbVl4pUvR1VT7VM8XnjdO41ttbrdSVWhBHPmU8JWHHM5Gi f1FXZuj39/Ercry1kSqQin3uhHd9SAQTcK9oQG3dITFttKotAnHmqYZLq1st/jz1LCDGWQh ksRx8QgQ98nH+BzRlUyybn+FBwvsvg+MqHdVr+vXmr+JVq5iSOG6pI86N9dlQujbt1fyl6+ dfXdTSEuaA5hkEE1Aa2jA== X-UI-Out-Filterresults: notjunk:1;V03:K0:UP4kajLpfsI=:F2lHfLkUVJ/y1lAS4zO+qI kwE5pNAigZg9dXYddIzIJNXqua8PjLKSkbUn7FXKN2qaiH7Sdn/zQu5fykOmc7pQKj6WnHy+q ZTc8jVMAQvhel5cUO5TXKCHhCHflM+16P7bFFn2gkY4u8JA9HKKZl8gSUQy/BqyP6EjCgT2Lc 6R4f54uQLwff2H3iqhsnbh6zgCyIu5+cN82w9nRobe8zv8zUQbGPs3GNF/U4iJpPPAnRVZ75I mF6U00NuAXF4abTHDp/MEvoClzzEh4dOfXSMo39MC5gzCCNOW+Ae3Mu9wSI3ljegf+LpuprWG KnP0NynlStqtusm9AICOd+Ct6xeG0PxPXpL15Xo849eH4nsLUy1QH0IAoemKzduQRGBAyamt4 9g7JdetV1x5Phy/L5BdqpwvifdvtstCLvhO0fEQTMVIhGG6VJGWqosoJRQT2X33D2QE1JnDqc MaRIJEQIpcWedaGypZ5UDt4ZzOionEt0stV5Fb5U0a6s9N4KOxqNDAfako5kq/XrG1Puis6Kc fBNdYM3M8tATQWBp6jl9OgJHjMnaldloTu872rxMOEELM74/XN83IfBZoPFZJ6MvbvxcCfhsD BI+o519BtLA2RUTA5RjouLuWH8Y+VFtHFsJkurU0wDzbgVA9XdC3p6I5U+o1midxpkuz/94Oa In2hKhpNB/c/ZyxFnfAt8NyKNB2ZsqC//PXmw5YJq8xIxQwZs6m5aAbpc7V5op+rfcAbebC9M uEa7HvwfBICiXT+32ksdUwZFh1HZCNWeZFrxFQ0umKB5YYpw4hxlTPdzqZ4WJZ7Jehr/IuLJZ qAvrdnGP/l8RT9NZSwqRE0FnZB14dCuz/aDXBfrk625V0jSTNyTEWyYE+INphUdIt8H+MNQFm 8oTtOjpjYFgCz3esGgXfpG9NjeiY4VA6g2f0CJ3Y4uYP8IrDx2pmJQ/HahJeg3sBirrveQyfX 4h4qqiBRFunOuLoed0UUG4p6QxA1vzqbHZvrzAJVfpCvUmOboCo8cZCWwnNvlj2Prk2ZyLXXf NohYJekEUZoeJbc6qDFJbP9KiDVWwprZGPiddlkz1OTqytAKU0inhP5c8WMxKsBTbo7P+KRlF jqBmYJTWp4v1nA= Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 2021/11/11 21:55, S. wrote: > On 11/11/21 02:11, Qu Wenruo wrote: > >>> root@OpenMediaVault:~# dd if=3D/dev/sda3 of=3D/tmp/mirror1 bs=3D1 coun= t=3D16k >>> skip=3D149487616 >>> 16384+0 records in >>> 16384+0 records out >>> 16384 bytes (16 kB, 16 KiB) copied, 0.305711 s, 53.6 kB/s >> >> My bad, this copy should be from /dev/sdb2, not /dev/sda3. >> >> No wonder both copy doesn't match. > > Hi, I really appreciate your help to fix this. I am attaching the new > `mirror1` image, generated like this: > > ------------------------ > root@OpenMediaVault:~# dd if=3D/dev/sdb2 of=3D/tmp/mirror1 bs=3D1 count= =3D16k You missed the "skip=3D" parameter. > 16384+0 records in > 16384+0 records out > 16384 bytes (16 kB, 16 KiB) copied, 0.274943 s, 59.6 kB/s > root@OpenMediaVault:~# rsync -avh /tmp/mirror1 > sully@192.168.1.14:/home/sully/Desktop/ > Password: > sending incremental file list > mirror1 > > sent 16.49K bytes=C2=A0 received 35 bytes=C2=A0 3.67K bytes/sec > total size is 16.38K=C2=A0 speedup is 0.99 > ------------------------ > > >> # dd if=3Dmirror2 of=3D/dev/sdb2 bs=3D1 count=3D16k skip=3D149487616 >> # dd if=3Dmirror2 of=3D/dev/sda3 bs=3D1 count=3D16k skip=3D170459136 All my bad. The correct command line should be: # dd if=3Dmirror2 of=3D/dev/sdb2 bs=3D1 count=3D16k seek=3D149487616 # dd if=3Dmirror2 of=3D/dev/sda3 bs=3D1 count=3D16k seek=3D170459136 Thankfully, even with the wrong command, btrfs has enough space reserved at its beginning, so your fs is still untouched and very safe. Thanks, Qu > > After writing out your fixed `mirror2` image with the above commands I > get these dmesg errors when attempting to mount it: > > ------------------------- > [=C2=A0=C2=A0 28.859193] BTRFS info (device sda3): flagging fs with big = metadata > feature > [=C2=A0=C2=A0 28.866209] BTRFS info (device sda3): disk space caching is= enabled > [=C2=A0=C2=A0 28.872507] BTRFS info (device sda3): has skinny extents > [=C2=A0=C2=A0 29.053000] BTRFS critical (device sda3): corrupt leaf: roo= t=3D9 > block=3D170459136 slot=3D0, invalid key objectid, have 11018354394740573= 44 > expect to be aligned to 4096 > [=C2=A0=C2=A0 29.067527] BTRFS error (device sda3): block=3D170459136 re= ad time tree > block corruption detected > [=C2=A0=C2=A0 29.120141] BTRFS critical (device sda3): corrupt leaf: roo= t=3D9 > block=3D170459136 slot=3D0, invalid key objectid, have 11018354394740573= 44 > expect to be aligned to 4096 > [=C2=A0=C2=A0 29.134781] BTRFS error (device sda3): block=3D170459136 re= ad time tree > block corruption detected > [=C2=A0=C2=A0 29.143568] BTRFS warning (device sda3): failed to read roo= t > (objectid=3D9): -5 > [=C2=A0=C2=A0 29.239873] BTRFS error (device sda3): open_ctree failed > ------------------------- > > Please let me know if you need anything else. Thanks a lot!