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 85282C433F5 for ; Wed, 10 Nov 2021 03:34:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 646EB6109F for ; Wed, 10 Nov 2021 03:34:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230242AbhKJDhc (ORCPT ); Tue, 9 Nov 2021 22:37:32 -0500 Received: from mout.gmx.net ([212.227.15.18]:33907 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229963AbhKJDhc (ORCPT ); Tue, 9 Nov 2021 22:37:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1636515284; bh=l3Dh/dyvXy8bdifd/XBIPMdl4oEDCc/dpjDnwYMy2TY=; h=X-UI-Sender-Class:Date:Subject:To:References:From:In-Reply-To; b=RB1F2SEVIqRHToUBRsrqcul2OoXRSVF84VcrGsU3TlFlKOCREZ1Djq7rqcPwbs3o1 TVeUHg98+c6wevaQn6CUR/7qEPHYFZ/3QHlICsm58cDkSXEd/vkpFD93ON9MsRmth9 cwloKeOMC6bh8aWCmPqNRlgkoUx4nH2KVbfzu5Gs= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.net (mrgmx005 [212.227.17.184]) with ESMTPSA (Nemesis) id 1MxDp4-1mVQmR0rCS-00xXJ0; Wed, 10 Nov 2021 04:34:44 +0100 Message-ID: Date: Wed, 10 Nov 2021 11:34:40 +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." , linux-btrfs@vger.kernel.org References: <37379516-cc7c-b045-ad2e-15c669a60921@gmail.com> From: Qu Wenruo In-Reply-To: <37379516-cc7c-b045-ad2e-15c669a60921@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:Pfd9ZLCh8sqJO63JawXXCe7LXhQTRfZk0IsxRmJ1WISafnWbZlr f9HrRT5Y7ExEc2u5dvA2GWEzz7A/30Uamt2Sutj1py9mHoTV5HYRAPce24lxvx1UakgcQ4c 1xd7tAdyHad4N763f3dZIrw17lnf8YMQFepwJE7SkpbJWLCvyUTUleXqxLpJ0vW27Simaps K73xb8dDSzAsEuMEM4JKQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:7sVAIVMGqi0=:2UKvujKh3RfF4NmqSLddYF oYypf8tOIqItIzArZ1PZaRI1vwTJT4lMy8bwQvwNHRFBjHuufcwIx+gjjsVBnrZV47BxIHYim gBK2L+8a3oa8qmGVoKWfr5UIRKRs9XA4rPlZr16/85OQL69BUISt3APP8CcF1P6bHNknQgSd9 ujn9LsLnOgaNlav76LI+JE7yVdMSvebnStsPExUI2trIiHmRqpMYUt5FOKlCQ3/7bMiCfh4EA ht2ff2CjiE9Fw/+huj1/zdwhHCbVD9W8xyfWjBzyEI6JcdxNzTHIBwovfXo+s7KI7bTwjD7SL sgQWaZikMrHnsqMQUAC9GJhiAd7zOBtgqScAKZDpI4TIrKw6B+kZMGsHerKo11mvlj1g4IEhJ Do4aMPAQlW2OtvBtKUxlRq6UJvyZa0dA2kM8XW4Qk46mhSFuvFWvvL3iNvxCwG5bWdHkxL7En sjZpqD5weV615sWxYk7GwYbNBAk1o7qrbVOYNVv1+e9K4d3jONi071nDub9pYXRwVLeDG9gsm /NqXbperlGB1kZZeY5lKrLMUI2nD4FNUWpPHmwCyXEs8zz/WYmyinMYm5/d8uFHpOKPVQh9UW VrPj09sfhz/UtwMKyQDvTRAbK7TCNVgJC4UNCZL38JQazRkhbz2b621YuPrArJGKWY4NyzkZZ 9TbXAVV6HLlFRIJag3k92pGo+5SyWzyyphyzpyW74fQHxCjzky+AOuNB6hP/vrgAziiWqk0i9 hww7bGngg6jiX3vMVN18TAWMI1fkfiDbqtKn4kpmummioFrVYJfD0zqAj20VGDJvUgin6YL6D csVcB7xR/KAMHXi1Lwp6l6lG8J80wo7CN4w83zssu0tpC6xRlTRC3iMgKru/gj9YwF+Ihx2jb Z0u4nMEb74/JqGC1igQaPj3IYepahHFJM9IyGg5L8bVYkKC7e21BgQftp8M3EGlT4Oa2pG/G+ cz7LhaZ2vG99UV8Cyh18ImdfW4BceiJgYYAnHl77/sto3XHDVloaLlHPE9pf8pGaBQJtVBSaS NXYpi00R9Kbr3rsDklWfIL3k/SeRAh7uN2bE9r3PNfyzOGAPAC6MDQOhe7YPTuAFrspZs6VvA JbJN+xFMHgbB/o= Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 2021/11/10 10:55, S. wrote: > Hi Qu, thank you very much for your fast response! > > Regarding memtest, normally in Linux I have never been able to run it > from inside an installed Linux system because it needs access to > protected kernel memory, and instead it has to run from a live USB or > from the memtest86 live testing image. But since this system is a > proprietary NAS with uboot and no video interface I don't know how to > run a memtest. There is a user space tool, memtester, which pins down a large chunk of memory, and do tests in user space. It would not be able to test memory space used by kernel, but it would be mostly enough for memory test use case. > >> To be extra safe, please provide the dump of your UUID tree: > > ------------------ > root@OpenMediaVault:~# btrfs ins dump-tree -t uuid /dev/sda3 > btrfs-progs v5.10.1 > uuid tree key (UUID_TREE ROOT_ITEM 0) > leaf 170459136 items 4 free space 16151 generation 366 owner UUID_TREE > leaf 170459136 flags 0x1(WRITTEN) backref revision 1 > fs uuid 4a057760-998c-4c66-aa6a-2a08c51d5299 > chunk uuid 54b2fa0f-9907-49d1-af33-e172581cd25e > =C2=A0=C2=A0=C2=A0=C2=A0item 0 key (1101835439474057344 EXTENT_ITEM 561= 68916570538915) > itemoff 16275 itemsize 8 Yep, exactly the problem. > =C2=A0=C2=A0=C2=A0=C2=A0item 1 key (0x0f4a817e92c9a080 UUID_KEY_SUBVOL = 0xc78d54ff9b03a3a8) > itemoff 16267 itemsize 8 > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 subvol_id 5 > =C2=A0=C2=A0=C2=A0=C2=A0item 2 key (0x421cfa6924ef510d UUID_KEY_SUBVOL = 0xc8423812cf31288b) > itemoff 16259 itemsize 8 > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 subvol_id 269 > =C2=A0=C2=A0=C2=A0=C2=A0item 3 key (0x45a64f82bc9152f1 UUID_KEY_SUBVOL = 0x3859efe8688d6ea4) > itemoff 16251 itemsize 8 > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 subvol_id 274 And you haven't yet recevied any subovlume, it would be way much easier to rebuild the tree. Thanks, Qu > total bytes 1990110658560 > bytes used 704343715840 > uuid 4a057760-998c-4c66-aa6a-2a08c51d5299 > ------------------