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=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, 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 C86B6C47095 for ; Wed, 9 Jun 2021 08:33:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AA8D961359 for ; Wed, 9 Jun 2021 08:33:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237656AbhFIIe4 (ORCPT ); Wed, 9 Jun 2021 04:34:56 -0400 Received: from mout.gmx.net ([212.227.17.20]:55301 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232333AbhFIIe4 (ORCPT ); Wed, 9 Jun 2021 04:34:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1623227580; bh=cYhQVvUOwindQ7U92OSWHhBfIKma3GHFt4s1gZL5KIU=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=KLZDahbhyaDLGdrUIEd/0ax1drHVECxUxDx/cm3kgTRAMA56V7dJDeCW4UIeVdvt0 42rSYqR6cd2yOQbXq3w3M6KbyPdYJ2LBpwJ0QplO65r0pVc97gap+jTdnhmePd/XJL 4VmAcz6t8OTGg4C9EXrxYGeAQoZJqSo3LeBVLFYA= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.net (mrgmx105 [212.227.17.174]) with ESMTPSA (Nemesis) id 1Mkpap-1lUiQu2bbr-00mK0G; Wed, 09 Jun 2021 10:33:00 +0200 Subject: Re: Write time tree block corruption detected To: auxsvr , linux-btrfs@vger.kernel.org References: <1861574.PYKUYFuaPT@localhost.localdomain> <4656165.31r3eYUQgx@localhost.localdomain> From: Qu Wenruo Message-ID: <9f901a7d-bbe7-fd13-8538-1fdc0f869296@gmx.com> Date: Wed, 9 Jun 2021 16:32:57 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <4656165.31r3eYUQgx@localhost.localdomain> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:oRHS2SA6EsQHcbRkR4A7Gewx1Ze0Wqjc8+lMT1D5z6u9+D1xi3s nJ5hwRXUMVDpbtY3WyV/KgViR/ZVlZSgFQSodg9VU+sOK6oaAyjrK+fQgW8Rq+H0g+yiI/8 yQk8o1TIUidPOEdclddrnA48L4ljb7IJX3b0vBTl7hl+MTGLbZFFWYzgAbTF1FSNseagngP a0VZXPo14flvBSPFcoNvA== X-UI-Out-Filterresults: notjunk:1;V03:K0:Mau4eyNckWo=:hKUJF6ZR/LvQF5yll6QgB4 WJ+sKhoJWkjb3zTacXynfK+Qx1rfq9sbyjF0FxMO+V3Yl9m1RQU29tiprQg1537P11BbBmhm1 1t2cZImQgK6a4wPgPux0wXaBarhmpluuZ+WlAMMIgGl332WOAQtkuPrU/9jElM1jwUVTxIlpJ CMsTCSg0Elf/Kxs/LD2VCSvl787JQrLoIsyX6b5rrEser7l+0C+Wt7ZyUCQGLhMIJeb8CSW+p rgWVVSNMSA+7nF2inTkZb2N6TCdor7YuaiqutACxdEzZ2543R30cuKLqZco86eTPHj9jzxd+S OhBiHyk3QSh/+mg4gGkJG7NLCNQXfbR7pWl5z3s4ctrOwpWDYV3D6aFAKmcr+IrRIYm5kZV0s MHpG7cx/fAsIXst926WP7dDR9FUMoEcOBqdHWSOSSuOfWSlBJYB2+2TAN7U6xTNmNEg95PXvM /zszspBobJpdM+D8iPCX109cKri6R+eYNQnWyY9wUKXcedGF7G8UfBugw0uDGdCi8BZe5BEs3 9j4YTKrqeF+lUKLPrA10SZDWN0mic7tsyUSPaqv9Flcfoc6z4n+kxqF069TeQ2w/RAuivlsE1 xWp6hoUJhCTvAt87DJ3wkYLiaFTqtwxtDvx5DHwNcnneV8mGqP0OpWDmHz05WEUzDi3fu45mO Eumx1W1cObiP1cCtFCbM1ZHV3pUmqREIpW2/gn4YRZT1CsTcDCoiUKWir6oK0X2gavHEI1pYV BvzYHWbCJNz2bEI26B4uoiqvPuyhlAATw7bBjUjIxz3jnyPOV0EXMi3L9+ZrF9g+qvTnuQ+Hf zFElATWOLfnXW9nKdpefYbK4qPIjp+csD+JTGHwhmcfNe986mQ7W3vqgcRsVWkAzgaEv2ufpC ILtltyCsY3S05pRtQcjvGFhk7EQm2w8E4kG1AAuSnT6bngKkqXeS9oJVuBzRcxMa31RI2+yjD FyaN/7jWy35h7dMpNVDHaGQlqwk6Et4BQUkdcKG4LQZOlDotEY06srj/OQXHEotvNVcA+dM6F S+wWWpwP3QG99VBAcqXGrwmR4D/k2IWRpOGKxbN6yAj6r5Uu9c8hPnv7mNQHhOVQjpAbY/Vp3 34xrT8tBH7CBj0XJu5jZuC7tvIut6HdasNvWmsArFpyWdHi4OrAEWo7jg== Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Confirmed that the result in device tree is indeed smaller than the superblock bytes_used. Would you please try to compile the following branch of btrfs-progs? https://github.com/adam900710/btrfs-progs/tree/device_size_fix And run "./btrfs check --repair --force /dev/sda2" for the newly compiled btrfs-progs to see if it solves your problem. Thanks, Qu On 2021/6/9 =E4=B8=8B=E5=8D=884:04, auxsvr wrote: > On Wednesday, 9 June 2021 04:05:18 EEST Qu Wenruo wrote: >> # btrfs ins dump-tree -t dev /dev/sda2 > # btrfs ins dump-tree -t dev /dev/sda2 > btrfs-progs v4.19.1 > device tree key (DEV_TREE ROOT_ITEM 0) > leaf 181304705024 items 59 free space 11984 generation 1049986 owner DEV= _TREE > leaf 181304705024 flags 0x1(WRITTEN) backref revision 1 > fs uuid 44c67fa4-e2c4-4da5-9d07-98959ff77bc4 > chunk uuid e09a0d7a-15ec-48ef-89fa-adaa5ec52990 > item 0 key (0 PERSISTENT_ITEM 1) itemoff 16243 itemsize 40 > persistent item objectid 0 offset 1 > device stats > write_errs 0 read_errs 0 flush_errs 0 corruption_errs 0= generation 0 > item 1 key (1 DEV_EXTENT 22020096) itemoff 16195 itemsize 48 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 229569986560 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 2 key (1 DEV_EXTENT 1095761920) itemoff 16147 itemsize 48 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 537007226880 length 335= 54432 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 3 key (1 DEV_EXTENT 2169503744) itemoff 16099 itemsize 48 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 227422502912 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 4 key (1 DEV_EXTENT 3243245568) itemoff 16051 itemsize 48 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 226348761088 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 5 key (1 DEV_EXTENT 4316987392) itemoff 16003 itemsize 48 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 225275019264 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 6 key (1 DEV_EXTENT 5390729216) itemoff 15955 itemsize 48 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 224201277440 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 7 key (1 DEV_EXTENT 6464471040) itemoff 15907 itemsize 48 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 223127535616 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 8 key (1 DEV_EXTENT 7538212864) itemoff 15859 itemsize 48 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 222053793792 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 9 key (1 DEV_EXTENT 8611954688) itemoff 15811 itemsize 48 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 220980051968 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 10 key (1 DEV_EXTENT 9685696512) itemoff 15763 itemsize 48 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 315011104768 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 11 key (1 DEV_EXTENT 10759438336) itemoff 15715 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 295851524096 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 12 key (1 DEV_EXTENT 11833180160) itemoff 15667 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 437149237248 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 13 key (1 DEV_EXTENT 12906921984) itemoff 15619 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 187694055424 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 14 key (1 DEV_EXTENT 14014218240) itemoff 15571 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 181251604480 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 15 key (1 DEV_EXTENT 15087960064) itemoff 15523 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 328164442112 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 16 key (1 DEV_EXTENT 16161701888) itemoff 15475 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 379972485120 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 17 key (1 DEV_EXTENT 17235443712) itemoff 15427 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 531168755712 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 18 key (1 DEV_EXTENT 18309185536) itemoff 15379 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 457684549632 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 19 key (1 DEV_EXTENT 19382927360) itemoff 15331 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 347860893696 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 20 key (1 DEV_EXTENT 20456669184) itemoff 15283 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 345142984704 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 21 key (1 DEV_EXTENT 21530411008) itemoff 15235 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 532242497536 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 22 key (1 DEV_EXTENT 23644340224) itemoff 15187 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 183399088128 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 23 key (1 DEV_EXTENT 24718082048) itemoff 15139 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 537040781312 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 24 key (1 DEV_EXTENT 25791823872) itemoff 15091 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 208095150080 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 25 key (1 DEV_EXTENT 26865565696) itemoff 15043 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 207021408256 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 26 key (1 DEV_EXTENT 27939307520) itemoff 14995 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 205947666432 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 27 key (1 DEV_EXTENT 29013049344) itemoff 14947 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 204873924608 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 28 key (1 DEV_EXTENT 30086791168) itemoff 14899 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 203800182784 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 29 key (1 DEV_EXTENT 31160532992) itemoff 14851 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 202726440960 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 30 key (1 DEV_EXTENT 32234274816) itemoff 14803 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 201652699136 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 31 key (1 DEV_EXTENT 33308016640) itemoff 14755 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 200578957312 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 32 key (1 DEV_EXTENT 34381758464) itemoff 14707 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 199505215488 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 33 key (1 DEV_EXTENT 35455500288) itemoff 14659 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 198431473664 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 34 key (1 DEV_EXTENT 36529242112) itemoff 14611 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 460905775104 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 35 key (1 DEV_EXTENT 37602983936) itemoff 14563 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 196283990016 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 36 key (1 DEV_EXTENT 38676725760) itemoff 14515 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 259097886720 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 37 key (1 DEV_EXTENT 39750467584) itemoff 14467 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 184472829952 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 38 key (1 DEV_EXTENT 40824209408) itemoff 14419 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 195210248192 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 39 key (1 DEV_EXTENT 41897951232) itemoff 14371 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 182325346304 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 40 key (1 DEV_EXTENT 42971693056) itemoff 14323 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 194136506368 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 41 key (1 DEV_EXTENT 44045434880) itemoff 14275 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 186620313600 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 42 key (1 DEV_EXTENT 45119176704) itemoff 14227 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 188767797248 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 43 key (1 DEV_EXTENT 46192918528) itemoff 14179 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 189841539072 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 44 key (1 DEV_EXTENT 47266660352) itemoff 14131 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 193062764544 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 45 key (1 DEV_EXTENT 48340402176) itemoff 14083 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 191989022720 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 46 key (1 DEV_EXTENT 49414144000) itemoff 14035 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 190915280896 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 47 key (1 DEV_EXTENT 50487885824) itemoff 13987 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 280606277632 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 48 key (1 DEV_EXTENT 51561627648) itemoff 13939 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 471576084480 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 49 key (1 DEV_EXTENT 52635369472) itemoff 13891 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 282753761280 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 50 key (1 DEV_EXTENT 53709111296) itemoff 13843 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 523384127488 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 51 key (1 DEV_EXTENT 54782853120) itemoff 13795 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 524625641472 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 52 key (1 DEV_EXTENT 55856594944) itemoff 13747 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 526202699776 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 53 key (1 DEV_EXTENT 56930336768) itemoff 13699 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 533316239360 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 54 key (1 DEV_EXTENT 58004078592) itemoff 13651 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 264802140160 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 55 key (1 DEV_EXTENT 59077820416) itemoff 13603 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 433558913024 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 56 key (1 DEV_EXTENT 60151562240) itemoff 13555 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 534389981184 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 57 key (1 DEV_EXTENT 61225304064) itemoff 13507 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 290303508480 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > item 58 key (1 DEV_EXTENT 62299045888) itemoff 13459 itemsize 4= 8 > dev extent chunk_tree 3 > chunk_objectid 256 chunk_offset 535463723008 length 107= 3741824 > chunk_tree_uuid 00000000-0000-0000-0000-000000000000 > total bytes 64424509440 > bytes used 46488170496 > uuid 44c67fa4-e2c4-4da5-9d07-98959ff77bc4 > >> # btrfs ins dump-super /dev/sda2 > # btrfs ins dump-super /dev/sda2 > superblock: bytenr=3D65536, device=3D/dev/sda2 > --------------------------------------------------------- > csum_type 0 (crc32c) > csum_size 4 > csum 0x5c8acbc2 [match] > bytenr 65536 > flags 0x1 > ( WRITTEN ) > magic _BHRfS_M [match] > fsid 44c67fa4-e2c4-4da5-9d07-98959ff77bc4 > metadata_uuid 44c67fa4-e2c4-4da5-9d07-98959ff77bc4 > label > generation 1050015 > root 181625438208 > sys_array_size 97 > chunk_root_generation 1047576 > root_level 1 > chunk_root 537007226880 > chunk_root_level 0 > log_root 0 > log_root_transid 0 > log_root_level 0 > total_bytes 64424509440 > bytes_used 46488170496 > sectorsize 4096 > nodesize 16384 > leafsize (deprecated) 16384 > stripesize 4096 > root_dir 6 > num_devices 1 > compat_flags 0x0 > compat_ro_flags 0x0 > incompat_flags 0x161 > ( MIXED_BACKREF | > BIG_METADATA | > EXTENDED_IREF | > SKINNY_METADATA ) > cache_generation 1050015 > uuid_tree_generation 1047664 > dev_item.uuid abc9d19a-d9d1-40a4-9bd5-f28654800249 > dev_item.fsid 44c67fa4-e2c4-4da5-9d07-98959ff77bc4 [match] > dev_item.type 0 > dev_item.total_bytes 64424509440 > dev_item.bytes_used 63451430912 > dev_item.io_align 0 > dev_item.io_width 0 > dev_item.sector_size 0 > dev_item.devid 1 > dev_item.dev_group 0 > dev_item.seek_speed 0 > dev_item.bandwidth 0 > dev_item.generation 0 > > Thanks, > Petros > >