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From:   bill gates <framingnoone@gmail.com>
Date:   Tue, 8 Mar 2022 23:21:33 -0600
Message-ID: <CALPV6Ds8dQ8rro6N=1xQbW09uwKnNdayVim=VPRgS47zpG-KuQ@mail.gmail.com>
Subject: Re: Updated to new kernel, and btrfs suddenly refuses to mount home
 directory fs.
To:     Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc:     linux-btrfs@vger.kernel.org
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Qu,

here's what I got on 5.15.23

dump-tree root /dev/sda2 on kernel 5.15.23 here: https://paste.ee/p/kSdI2

Warning: 2+MB text dump, this is a good-sized, and well-used, fs.

Thank you,
-- Laurence

On Tue, Mar 8, 2022 at 10:43 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>
>
>
> On 2022/3/9 12:28, bill gates wrote:
> > Oh... I ran the ins dump-tree on the old kernel (4.19), not the new
> > one. The new kernel sees it differently (!)
>
> No, this is still not the old result.
>
> It looks like a mount using older kernel changed the result.
>
> Please use the following command instead:
>
> # btrfs ins dump-tree -t root /dev/sda2
>
> Thanks,
> Qu
>
> >
> > ----- kernel 5.15 ins dump-tree
> > btrfs-progs v5.15.1
> > leaf 10442806968320 items 169 free space 3439 generation 6835704 owner
> > EXTENT_TREE
> > leaf 10442806968320 flags 0x1(WRITTEN) backref revision 1
> > fs uuid 83c6c9ca-b8fe-4d4c-aaa8-1729f90b0824
> > chunk uuid 9b77400b-f370-4f49-be82-9cb38c7f78a0
> >         item 0 key (10442625581056 EXTENT_ITEM 16384) itemoff 16232 itemsize 51
> >                 refs 1 gen 309972 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 11115485335552) level 0
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> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10997584617472) level 0
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> >                 refs 1 gen 309972 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 11115501953024) level 0
> >                 tree block backref root CSUM_TREE
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> >                 tree block backref root CSUM_TREE
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> >                 tree block backref root EXTENT_TREE
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> >                 refs 1 gen 6787103 flags TREE_BLOCK
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> >                 tree block backref root EXTENT_TREE
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> >                 refs 1 gen 6236744 flags TREE_BLOCK
> >                 tree block key (76764131 INODE_ITEM 0) level 0
> >                 tree block backref root 257
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> >                 refs 1 gen 6236744 flags TREE_BLOCK
> >                 tree block key (76764153 INODE_REF 76762106) level 0
> >                 tree block backref root 257
> >         item 27 key (10442626121728 EXTENT_ITEM 16384) itemoff 14855 itemsize 51
> >                 refs 1 gen 6236744 flags TREE_BLOCK
> >                 tree block key (76764176 EXTENT_DATA 0) level 0
> >                 tree block backref root 257
> >         item 28 key (10442626138112 EXTENT_ITEM 16384) itemoff 14804 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10405131452416) level 0
> >                 tree block backref root CSUM_TREE
> >         item 29 key (10442626154496 EXTENT_ITEM 16384) itemoff 14753 itemsize 51
> >                 refs 1 gen 6236744 flags TREE_BLOCK
> >                 tree block key (76764289 INODE_ITEM 0) level 0
> >                 tree block backref root 257
> >         item 30 key (10442626170880 EXTENT_ITEM 16384) itemoff 14702 itemsize 51
> >                 refs 1 gen 309972 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 11115722371072) level 0
> >                 tree block backref root CSUM_TREE
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> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12066310410240 EXTENT_ITEM 4096) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 32 key (10442626203648 EXTENT_ITEM 16384) itemoff 14600 itemsize 51
> >                 refs 1 gen 6724925 flags TREE_BLOCK
> >                 tree block key (10241601216512 EXTENT_ITEM 8192) level 0
> >                 tree block backref root EXTENT_TREE
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> >                 refs 1 gen 302689 flags TREE_BLOCK|FULL_BACKREF
> >                 tree block key (2541168 DIR_INDEX 9) level 0
> >                 tree block backref root 257
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> >                 refs 1 gen 302689 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10405148045312) level 0
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> >                 refs 1 gen 302689 flags TREE_BLOCK|FULL_BACKREF
> >                 tree block key (2541180 EXTENT_DATA 0) level 0
> >                 tree block backref root 257
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> >                 tree block key (2541188 EXTENT_DATA 0) level 0
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> >                 tree block key (12069211504640 EXTENT_ITEM 131072) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 64 key (10442626973696 EXTENT_ITEM 16384) itemoff 12968 itemsize 51
> >                 refs 1 gen 6236744 flags TREE_BLOCK
> >                 tree block key (76764814 INODE_REF 76762122) level 0
> >                 tree block backref root 257
> >         item 65 key (10442626990080 EXTENT_ITEM 16384) itemoff 12917 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK|FULL_BACKREF
> >                 tree block key (2538301 INODE_ITEM 0) level 0
> >                 tree block backref root 257
> >         item 66 key (10442627006464 EXTENT_ITEM 16384) itemoff 12866 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK|FULL_BACKREF
> >                 tree block key (2538310 EXTENT_DATA 0) level 0
> >                 tree block backref root 257
> >         item 67 key (10442627022848 EXTENT_ITEM 16384) itemoff 12815 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10405197897728) level 0
> >                 tree block backref root CSUM_TREE
> >         item 68 key (10442627039232 EXTENT_ITEM 16384) itemoff 12764 itemsize 51
> >                 refs 1 gen 6835701 flags TREE_BLOCK
> >                 tree block key (9708461223936 EXTENT_ITEM 8192) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 69 key (10442627055616 EXTENT_ITEM 16384) itemoff 12713 itemsize 51
> >                 refs 1 gen 6835701 flags TREE_BLOCK
> >                 tree block key (9709536043008 EXTENT_ITEM 4096) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 70 key (10442627088384 EXTENT_ITEM 16384) itemoff 12662 itemsize 51
> >                 refs 1 gen 309972 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 11115738988544) level 0
> >                 tree block backref root CSUM_TREE
> >         item 71 key (10442627104768 EXTENT_ITEM 16384) itemoff 12611 itemsize 51
> >                 refs 1 gen 6698785 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 12177849692160) level 0
> >                 tree block backref root CSUM_TREE
> >         item 72 key (10442627121152 EXTENT_ITEM 16384) itemoff 12560 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK|FULL_BACKREF
> >                 tree block key (2538341 INODE_REF 2537331) level 0
> >                 tree block backref root 257
> >         item 73 key (10442627137536 EXTENT_ITEM 16384) itemoff 12509 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK|FULL_BACKREF
> >                 tree block key (2538361 INODE_REF 2537394) level 0
> >                 tree block backref root 257
> >         item 74 key (10442627153920 EXTENT_ITEM 16384) itemoff 12458 itemsize 51
> >                 refs 1 gen 672522 flags TREE_BLOCK
> >                 tree block key (2552451 EXTENT_DATA 0) level 0
> >                 tree block backref root 257
> >         item 75 key (10442627170304 EXTENT_ITEM 16384) itemoff 12407 itemsize 51
> >                 refs 1 gen 309972 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 11115755606016) level 0
> >                 tree block backref root CSUM_TREE
> >         item 76 key (10442627186688 EXTENT_ITEM 16384) itemoff 12356 itemsize 51
> >                 refs 1 gen 6236744 flags TREE_BLOCK
> >                 tree block key (76764880 INODE_REF 76762122) level 0
> >                 tree block backref root 257
> >         item 77 key (10442627203072 EXTENT_ITEM 16384) itemoff 12305 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12069486489600 EXTENT_ITEM 8192) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 78 key (10442627219456 EXTENT_ITEM 16384) itemoff 12254 itemsize 51
> >                 refs 1 gen 4416707 flags TREE_BLOCK
> >                 tree block key (17422551 EXTENT_DATA 0) level 0
> >                 tree block backref root 257
> >         item 79 key (10442627252224 EXTENT_ITEM 16384) itemoff 12203 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK|FULL_BACKREF
> >                 tree block key (2538389 EXTENT_DATA 0) level 0
> >                 tree block backref root 257
> >         item 80 key (10442627268608 EXTENT_ITEM 16384) itemoff 12152 itemsize 51
> >                 refs 1 gen 6236744 flags TREE_BLOCK
> >                 tree block key (76765020 INODE_REF 76762122) level 0
> >                 tree block backref root 257
> >         item 81 key (10442627284992 EXTENT_ITEM 16384) itemoff 12101 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK|FULL_BACKREF
> >                 tree block key (2538408 DIR_INDEX 53) level 0
> >                 tree block backref root 257
> >         item 82 key (10442627301376 EXTENT_ITEM 16384) itemoff 12050 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12069821075456 EXTENT_ITEM 974848) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 83 key (10442627334144 EXTENT_ITEM 16384) itemoff 11999 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12070201597952 EXTENT_ITEM 1052672) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 84 key (10442627350528 EXTENT_ITEM 16384) itemoff 11948 itemsize 51
> >                 refs 1 gen 6698785 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 12193235271680) level 0
> >                 tree block backref root CSUM_TREE
> >         item 85 key (10442627399680 EXTENT_ITEM 16384) itemoff 11897 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK|FULL_BACKREF
> >                 tree block key (2538447 EXTENT_DATA 0) level 0
> >                 tree block backref root 257
> >         item 86 key (10442627432448 EXTENT_ITEM 16384) itemoff 11846 itemsize 51
> >                 refs 1 gen 6835701 flags TREE_BLOCK
> >                 tree block key (9723383021568 EXTENT_ITEM 950272) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 87 key (10442627481600 EXTENT_ITEM 16384) itemoff 11795 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10405214515200) level 0
> >                 tree block backref root CSUM_TREE
> >         item 88 key (10442627497984 EXTENT_ITEM 16384) itemoff 11744 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10405231132672) level 0
> >                 tree block backref root CSUM_TREE
> >         item 89 key (10442627514368 EXTENT_ITEM 16384) itemoff 11693 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12087570075648 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 90 key (10442627530752 EXTENT_ITEM 16384) itemoff 11642 itemsize 51
> >                 refs 1 gen 309972 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10567585533952) level 0
> >                 tree block backref root CSUM_TREE
> >         item 91 key (10442627563520 EXTENT_ITEM 16384) itemoff 11591 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12088286089216 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 92 key (10442627579904 EXTENT_ITEM 16384) itemoff 11540 itemsize 51
> >                 refs 1 gen 6698785 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 12243322048512) level 0
> >                 tree block backref root CSUM_TREE
> >         item 93 key (10442627596288 EXTENT_ITEM 16384) itemoff 11489 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12068807602176 EXTENT_ITEM 4096) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 94 key (10442627629056 EXTENT_ITEM 16384) itemoff 11438 itemsize 51
> >                 refs 1 gen 6727271 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 12183535943680) level 0
> >                 tree block backref root CSUM_TREE
> >         item 95 key (10442627645440 EXTENT_ITEM 16384) itemoff 11387 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10405247750144) level 0
> >                 tree block backref root CSUM_TREE
> >         item 96 key (10442627678208 EXTENT_ITEM 16384) itemoff 11336 itemsize 51
> >                 refs 1 gen 309972 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 11115772223488) level 0
> >                 tree block backref root CSUM_TREE
> >         item 97 key (10442627694592 EXTENT_ITEM 16384) itemoff 11285 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12157162041344 EXTENT_ITEM 790528) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 98 key (10442627710976 EXTENT_ITEM 16384) itemoff 11234 itemsize 51
> >                 refs 1 gen 6835701 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 9756884873216) level 0
> >                 tree block backref root CSUM_TREE
> >         item 99 key (10442627727360 EXTENT_ITEM 16384) itemoff 11183 itemsize 51
> >                 refs 1 gen 6464632 flags TREE_BLOCK
> >                 tree block key (65735848 INODE_REF 58323055) level 0
> >                 tree block backref root 257
> >         item 100 key (10442627776512 EXTENT_ITEM 16384) itemoff 11132 itemsize 51
> >                 refs 1 gen 6139527 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 11830064242688) level 0
> >                 tree block backref root CSUM_TREE
> >         item 101 key (10442627792896 EXTENT_ITEM 16384) itemoff 11081 itemsize 51
> >                 refs 1 gen 6464632 flags TREE_BLOCK
> >                 tree block key (65736607 INODE_REF 65731578) level 0
> >                 tree block backref root 257
> >         item 102 key (10442627858432 EXTENT_ITEM 16384) itemoff 11030 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12180178153472 EXTENT_ITEM 8192) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 103 key (10442627874816 EXTENT_ITEM 16384) itemoff 10979 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12180343758848 EXTENT_ITEM 14528512) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 104 key (10442627891200 EXTENT_ITEM 16384) itemoff 10928 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12142622306304 EXTENT_ITEM 24576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 105 key (10442627907584 EXTENT_ITEM 16384) itemoff 10877 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12180880535552 EXTENT_ITEM 155648) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 106 key (10442627923968 EXTENT_ITEM 16384) itemoff 10826 itemsize 51
> >                 refs 1 gen 6680401 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 12204407955456) level 0
> >                 tree block backref root CSUM_TREE
> >         item 107 key (10442627940352 EXTENT_ITEM 16384) itemoff 10775 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12180491771904 EXTENT_ITEM 4096) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 108 key (10442627956736 EXTENT_ITEM 16384) itemoff 10724 itemsize 51
> >                 refs 1 gen 6236744 flags TREE_BLOCK
> >                 tree block key (76764087 INODE_ITEM 0) level 0
> >                 tree block backref root 257
> >         item 109 key (10442627973120 EXTENT_ITEM 16384) itemoff 10673 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12185288880128 EXTENT_ITEM 49152) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 110 key (10442627989504 EXTENT_ITEM 16384) itemoff 10622 itemsize 51
> >                 refs 1 gen 6680401 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 12206515376128) level 0
> >                 tree block backref root CSUM_TREE
> >         item 111 key (10442628005888 EXTENT_ITEM 16384) itemoff 10571 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12185404018688 EXTENT_ITEM 1052672) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 112 key (10442628022272 EXTENT_ITEM 16384) itemoff 10520 itemsize 51
> >                 refs 1 gen 6464632 flags TREE_BLOCK
> >                 tree block key (27390978 INODE_ITEM 0) level 0
> >                 tree block backref root 257
> >         item 113 key (10442628038656 EXTENT_ITEM 16384) itemoff 10469 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12196305096704 EXTENT_ITEM 12288) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 114 key (10442628055040 EXTENT_ITEM 16384) itemoff 10418 itemsize 51
> >                 refs 1 gen 6464632 flags TREE_BLOCK
> >                 tree block key (17346964 INODE_REF 17346635) level 0
> >                 tree block backref root 257
> >         item 115 key (10442628071424 EXTENT_ITEM 16384) itemoff 10367 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12202632044544 EXTENT_ITEM 135168) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 116 key (10442628104192 EXTENT_ITEM 16384) itemoff 10316 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12184667025408 EXTENT_ITEM 4198400) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 117 key (10442628120576 EXTENT_ITEM 16384) itemoff 10265 itemsize 51
> >                 refs 1 gen 6236744 flags TREE_BLOCK
> >                 tree block key (76764208 EXTENT_DATA 0) level 0
> >                 tree block backref root 257
> >         item 118 key (10442628136960 EXTENT_ITEM 16384) itemoff 10214 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12223140970496 EXTENT_ITEM 1114112) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 119 key (10442628153344 EXTENT_ITEM 16384) itemoff 10163 itemsize 51
> >                 refs 1 gen 6464632 flags TREE_BLOCK
> >                 tree block key (57503313 INODE_REF 5903664) level 0
> >                 tree block backref root 257
> >         item 120 key (10442628169728 EXTENT_ITEM 16384) itemoff 10112 itemsize 51
> >                 refs 1 gen 6727271 flags TREE_BLOCK
> >                 tree block key (12282814701568 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 121 key (10442628186112 EXTENT_ITEM 16384) itemoff 10061 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12223473651712 EXTENT_ITEM 729088) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 122 key (10442628202496 EXTENT_ITEM 16384) itemoff 10010 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12224274079744 EXTENT_ITEM 3145728) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 123 key (10442628218880 EXTENT_ITEM 16384) itemoff 9959 itemsize 51
> >                 refs 1 gen 6835701 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 9822438273024) level 0
> >                 tree block backref root CSUM_TREE
> >         item 124 key (10442628251648 EXTENT_ITEM 16384) itemoff 9908 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12224877871104 EXTENT_ITEM 15855616) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 125 key (10442628268032 EXTENT_ITEM 16384) itemoff 9857 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12225476325376 EXTENT_ITEM 208896) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 126 key (10442628284416 EXTENT_ITEM 16384) itemoff 9806 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12226798768128 EXTENT_ITEM 2101248) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 127 key (10442628300800 EXTENT_ITEM 16384) itemoff 9755 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12227805872128 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 128 key (10442628317184 EXTENT_ITEM 16384) itemoff 9704 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12233946206208 EXTENT_ITEM 20480) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 129 key (10442628333568 EXTENT_ITEM 16384) itemoff 9653 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12233996038144 EXTENT_ITEM 233472) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 130 key (10442628349952 EXTENT_ITEM 16384) itemoff 9602 itemsize 51
> >                 refs 1 gen 6698785 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 12160562507776) level 0
> >                 tree block backref root CSUM_TREE
> >         item 131 key (10442628366336 EXTENT_ITEM 16384) itemoff 9551 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12237278531584 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 132 key (10442628382720 EXTENT_ITEM 16384) itemoff 9500 itemsize 51
> >                 refs 1 gen 6727271 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 12421121183744) level 0
> >                 tree block backref root CSUM_TREE
> >         item 133 key (10442628399104 EXTENT_ITEM 16384) itemoff 9449 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12237030932480 EXTENT_ITEM 118784) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 134 key (10442628415488 EXTENT_ITEM 16384) itemoff 9398 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12237580976128 EXTENT_ITEM 4194304) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 135 key (10442628431872 EXTENT_ITEM 16384) itemoff 9347 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12241256226816 EXTENT_ITEM 200704) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 136 key (10442628448256 EXTENT_ITEM 16384) itemoff 9296 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12241758822400 EXTENT_ITEM 28672) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 137 key (10442628464640 EXTENT_ITEM 16384) itemoff 9245 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12253141274624 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 138 key (10442628481024 EXTENT_ITEM 16384) itemoff 9194 itemsize 51
> >                 refs 1 gen 6680401 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 11321250156544) level 0
> >                 tree block backref root CSUM_TREE
> >         item 139 key (10442628497408 EXTENT_ITEM 16384) itemoff 9143 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10405264367616) level 0
> >                 tree block backref root CSUM_TREE
> >         item 140 key (10442628513792 EXTENT_ITEM 16384) itemoff 9092 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10405280935936) level 0
> >                 tree block backref root CSUM_TREE
> >         item 141 key (10442628562944 EXTENT_ITEM 16384) itemoff 9041 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12265441398784 EXTENT_ITEM 2097152) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 142 key (10442628579328 EXTENT_ITEM 16384) itemoff 8990 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12271441833984 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 143 key (10442628595712 EXTENT_ITEM 16384) itemoff 8939 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12272561885184 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 144 key (10442628612096 EXTENT_ITEM 16384) itemoff 8888 itemsize 51
> >                 refs 1 gen 309972 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 11115788840960) level 0
> >                 tree block backref root CSUM_TREE
> >         item 145 key (10442628628480 EXTENT_ITEM 16384) itemoff 8837 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12282866843648 EXTENT_ITEM 905216) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 146 key (10442628644864 EXTENT_ITEM 16384) itemoff 8786 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12283205406720 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 147 key (10442628661248 EXTENT_ITEM 16384) itemoff 8735 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10434327703552) level 0
> >                 tree block backref root CSUM_TREE
> >         item 148 key (10442628677632 EXTENT_ITEM 16384) itemoff 8684 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12289339404288 EXTENT_ITEM 81920) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 149 key (10442628694016 EXTENT_ITEM 16384) itemoff 8633 itemsize 51
> >                 refs 1 gen 302689 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10434344321024) level 0
> >                 tree block backref root CSUM_TREE
> >         item 150 key (10442628710400 EXTENT_ITEM 16384) itemoff 8582 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12299776696320 EXTENT_ITEM 3145728) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 151 key (10442628726784 EXTENT_ITEM 16384) itemoff 8531 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12299871612928 EXTENT_ITEM 4096) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 152 key (10442628743168 EXTENT_ITEM 16384) itemoff 8480 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12302335598592 EXTENT_ITEM 4096) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 153 key (10442628759552 EXTENT_ITEM 16384) itemoff 8429 itemsize 51
> >                 refs 1 gen 6680401 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 12207655321600) level 0
> >                 tree block backref root CSUM_TREE
> >         item 154 key (10442628775936 EXTENT_ITEM 16384) itemoff 8378 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12302453288960 EXTENT_ITEM 2097152) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 155 key (10442628792320 EXTENT_ITEM 16384) itemoff 8327 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12303679279104 EXTENT_ITEM 98304) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 156 key (10442628808704 EXTENT_ITEM 16384) itemoff 8276 itemsize 51
> >                 refs 1 gen 6680401 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 12209255579648) level 0
> >                 tree block backref root CSUM_TREE
> >         item 157 key (10442628825088 EXTENT_ITEM 16384) itemoff 8225 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12306045173760 EXTENT_ITEM 4096) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 158 key (10442628841472 EXTENT_ITEM 16384) itemoff 8174 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12306189029376 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 159 key (10442628857856 EXTENT_ITEM 16384) itemoff 8123 itemsize 51
> >                 refs 1 gen 6487789 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10596968013824) level 0
> >                 tree block backref root CSUM_TREE
> >         item 160 key (10442628874240 EXTENT_ITEM 16384) itemoff 8072 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12310012329984 EXTENT_ITEM 131072) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 161 key (10442628923392 EXTENT_ITEM 16384) itemoff 8021 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12311480930304 EXTENT_ITEM 61440) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 162 key (10442628972544 EXTENT_ITEM 16384) itemoff 7970 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12317130739712 EXTENT_ITEM 1052672) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 163 key (10442628988928 EXTENT_ITEM 16384) itemoff 7919 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12317269188608 EXTENT_ITEM 2097152) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 164 key (10442629005312 EXTENT_ITEM 16384) itemoff 7868 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12317973839872 EXTENT_ITEM 4096) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 165 key (10442629021696 EXTENT_ITEM 16384) itemoff 7817 itemsize 51
> >                 refs 1 gen 6834895 flags TREE_BLOCK
> >                 tree block key (EXTENT_CSUM EXTENT_CSUM 10051564580864) level 0
> >                 tree block backref root CSUM_TREE
> >         item 166 key (10442629038080 EXTENT_ITEM 16384) itemoff 7766 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12318824312832 EXTENT_ITEM 2097152) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 167 key (10442629054464 EXTENT_ITEM 16384) itemoff 7715 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12319312617472 EXTENT_ITEM 4993024) level 0
> >                 tree block backref root EXTENT_TREE
> >         item 168 key (10442629070848 EXTENT_ITEM 16384) itemoff 7664 itemsize 51
> >                 refs 1 gen 6787103 flags TREE_BLOCK
> >                 tree block key (12319524802560 EXTENT_ITEM 1048576) level 0
> >                 tree block backref root EXTENT_TREE
> >
> > ----
> >
> > Thanks,
> > -- Laurence
> >
> >
> > On Tue, Mar 8, 2022 at 9:00 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
> >>
> >>
> >>
> >> On 2022/3/9 09:09, bill gates wrote:
> >>> This filesystem was most likely created in 2014 using the tools of
> >>> that time, at least that's the oldest file in my home directory. It
> >>> _might_ have been made in 2019, that's the date on the mount point.
> >>>
> >>> There are 2 subvolumes on /dev/sda2, /home and /var.
> >>>
> >>> My btrfs-progs version is 5.15.1.
> >>>
> >>> Per your request:
> >>> # btrfs ins dump-tree -b 10442806968320 /dev/sda2
> >>> btrfs-progs v5.15.1
> >>
> >> Weird, the output doesn't match the dmesg.
> >>
> >> This tree belongs to csum tree, not root tree.
> >>
> >> Thanks,
> >> Qu
> >>> leaf 10442806968320 items 34 free space 6225 generation 6834902 owner CSUM_TREE
> >>> leaf 10442806968320 flags 0x1(WRITTEN) backref revision 1
> >>> fs uuid 83c6c9ca-b8fe-4d4c-aaa8-1729f90b0824
> >>> chunk uuid 9b77400b-f370-4f49-be82-9cb38c7f78a0
> >>>          item 0 key (EXTENT_CSUM EXTENT_CSUM 9848629587968) itemoff
> >>> 16075 itemsize 208
> >>>                  range start 9848629587968 end 9848629800960 length 212992
> >>>          item 1 key (EXTENT_CSUM EXTENT_CSUM 9848630026240) itemoff
> >>> 15823 itemsize 252
> >>>                  range start 9848630026240 end 9848630284288 length 258048
> >>>          item 2 key (EXTENT_CSUM EXTENT_CSUM 9848630714368) itemoff
> >>> 15815 itemsize 8
> >>>                  range start 9848630714368 end 9848630722560 length 8192
> >>>          item 3 key (EXTENT_CSUM EXTENT_CSUM 9848630984704) itemoff
> >>> 14723 itemsize 1092
> >>>                  range start 9848630984704 end 9848632102912 length 1118208
> >>>          item 4 key (EXTENT_CSUM EXTENT_CSUM 9848632160256) itemoff
> >>> 14703 itemsize 20
> >>>                  range start 9848632160256 end 9848632180736 length 20480
> >>>          item 5 key (EXTENT_CSUM EXTENT_CSUM 9848632180736) itemoff
> >>> 14279 itemsize 424
> >>>                  range start 9848632180736 end 9848632614912 length 434176
> >>>          item 6 key (EXTENT_CSUM EXTENT_CSUM 9848632942592) itemoff
> >>> 14067 itemsize 212
> >>>                  range start 9848632942592 end 9848633159680 length 217088
> >>>          item 7 key (EXTENT_CSUM EXTENT_CSUM 9848633286656) itemoff
> >>> 13815 itemsize 252
> >>>                  range start 9848633286656 end 9848633544704 length 258048
> >>>          item 8 key (EXTENT_CSUM EXTENT_CSUM 9848633548800) itemoff
> >>> 13579 itemsize 236
> >>>                  range start 9848633548800 end 9848633790464 length 241664
> >>>          item 9 key (EXTENT_CSUM EXTENT_CSUM 9848633810944) itemoff
> >>> 13527 itemsize 52
> >>>                  range start 9848633810944 end 9848633864192 length 53248
> >>>          item 10 key (EXTENT_CSUM EXTENT_CSUM 9848633950208) itemoff
> >>> 12671 itemsize 856
> >>>                  range start 9848633950208 end 9848634826752 length 876544
> >>>          item 11 key (EXTENT_CSUM EXTENT_CSUM 9848634826752) itemoff
> >>> 12659 itemsize 12
> >>>                  range start 9848634826752 end 9848634839040 length 12288
> >>>          item 12 key (EXTENT_CSUM EXTENT_CSUM 9848634970112) itemoff
> >>> 12643 itemsize 16
> >>>                  range start 9848634970112 end 9848634986496 length 16384
> >>>          item 13 key (EXTENT_CSUM EXTENT_CSUM 9848635056128) itemoff
> >>> 12583 itemsize 60
> >>>                  range start 9848635056128 end 9848635117568 length 61440
> >>>          item 14 key (EXTENT_CSUM EXTENT_CSUM 9848635117568) itemoff
> >>> 12151 itemsize 432
> >>>                  range start 9848635117568 end 9848635559936 length 442368
> >>>          item 15 key (EXTENT_CSUM EXTENT_CSUM 9848635592704) itemoff
> >>> 12135 itemsize 16
> >>>                  range start 9848635592704 end 9848635609088 length 16384
> >>>          item 16 key (EXTENT_CSUM EXTENT_CSUM 9848635703296) itemoff
> >>> 11791 itemsize 344
> >>>                  range start 9848635703296 end 9848636055552 length 352256
> >>>          item 17 key (EXTENT_CSUM EXTENT_CSUM 9848636108800) itemoff
> >>> 11719 itemsize 72
> >>>                  range start 9848636108800 end 9848636182528 length 73728
> >>>          item 18 key (EXTENT_CSUM EXTENT_CSUM 9848636669952) itemoff
> >>> 11691 itemsize 28
> >>>                  range start 9848636669952 end 9848636698624 length 28672
> >>>          item 19 key (EXTENT_CSUM EXTENT_CSUM 9848636698624) itemoff
> >>> 11371 itemsize 320
> >>>                  range start 9848636698624 end 9848637026304 length 327680
> >>>          item 20 key (EXTENT_CSUM EXTENT_CSUM 9848637026304) itemoff
> >>> 10979 itemsize 392
> >>>                  range start 9848637026304 end 9848637427712 length 401408
> >>>          item 21 key (EXTENT_CSUM EXTENT_CSUM 9848637468672) itemoff
> >>> 10131 itemsize 848
> >>>                  range start 9848637468672 end 9848638337024 length 868352
> >>>          item 22 key (EXTENT_CSUM EXTENT_CSUM 9848638631936) itemoff
> >>> 10079 itemsize 52
> >>>                  range start 9848638631936 end 9848638685184 length 53248
> >>>          item 23 key (EXTENT_CSUM EXTENT_CSUM 9848638685184) itemoff
> >>> 9791 itemsize 288
> >>>                  range start 9848638685184 end 9848638980096 length 294912
> >>>          item 24 key (EXTENT_CSUM EXTENT_CSUM 9848638980096) itemoff
> >>> 9787 itemsize 4
> >>>                  range start 9848638980096 end 9848638984192 length 4096
> >>>          item 25 key (EXTENT_CSUM EXTENT_CSUM 9848638984192) itemoff
> >>> 9735 itemsize 52
> >>>                  range start 9848638984192 end 9848639037440 length 53248
> >>>          item 26 key (EXTENT_CSUM EXTENT_CSUM 9848639045632) itemoff
> >>> 9111 itemsize 624
> >>>                  range start 9848639045632 end 9848639684608 length 638976
> >>>          item 27 key (EXTENT_CSUM EXTENT_CSUM 9848639684608) itemoff
> >>> 9091 itemsize 20
> >>>                  range start 9848639684608 end 9848639705088 length 20480
> >>>          item 28 key (EXTENT_CSUM EXTENT_CSUM 9848639967232) itemoff
> >>> 8003 itemsize 1088
> >>>                  range start 9848639967232 end 9848641081344 length 1114112
> >>>          item 29 key (EXTENT_CSUM EXTENT_CSUM 9848641150976) itemoff
> >>> 7947 itemsize 56
> >>>                  range start 9848641150976 end 9848641208320 length 57344
> >>>          item 30 key (EXTENT_CSUM EXTENT_CSUM 9848641409024) itemoff
> >>> 7887 itemsize 60
> >>>                  range start 9848641409024 end 9848641470464 length 61440
> >>>          item 31 key (EXTENT_CSUM EXTENT_CSUM 9848641695744) itemoff
> >>> 7643 itemsize 244
> >>>                  range start 9848641695744 end 9848641945600 length 249856
> >>>          item 32 key (EXTENT_CSUM EXTENT_CSUM 9848642043904) itemoff
> >>> 7615 itemsize 28
> >>>                  range start 9848642043904 end 9848642072576 length 28672
> >>>          item 33 key (EXTENT_CSUM EXTENT_CSUM 9848642162688) itemoff
> >>> 7075 itemsize 540
> >>>                  range start 9848642162688 end 9848642715648 length 552960
> >>>
> >>>
> >>> On Tue, Mar 8, 2022 at 5:48 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
> >>>>
> >>>>
> >>>>
> >>>> On 2022/3/9 03:05, bill gates wrote:
> >>>>> So, I recently attempted to upgrade from Linux kernel 4.19.82 to
> >>>>> 5.15.23, and I'm getting a critical error in dmesg about a corrupt
> >>>>> leaf (and no mounting of /home allowed with the options I'm aware of)
> >>>>>
> >>>>> [ 396.218964] BTRFS critical (device sda2): corrupt leaf: root=1
> >>>>> block=10442806968320 sl
> >>>>> ot=8 ino=6, invalid location key objectid: has 1 expect 6 or [256,
> >>>>> 18446744073709551360]
> >>>>> or 18446744073709551604
> >>>>
> >>>> Please provide the following output:
> >>>>
> >>>> # btrfs ins dump-tree -b 10442806968320 /dev/sda2
> >>>>
> >>>>
> >>>> The error message means, we got a DIR_ITEM in root tree.
> >>>>
> >>>> Normally that is used to indicate what default subvolume is.
> >>>> Thus it's normally 6 or 5, or any valid subvolume id.
> >>>>
> >>>> But in your case, it's 1, thus tree-checker is rejecting your root tree.
> >>>>
> >>>> I didn't thought we could have 1 as default subvolume (as 1 is the root
> >>>> tree, which is not a subvolume).
> >>>>
> >>>> But it looks like we should update btrfs check to fix this case.
> >>>>
> >>>> Is the fs created using older btrfs-progs? I guess that may be the cause...
> >>>>
> >>>> Thanks,
> >>>> Qu
> >>>>
> >>>>
> >>>>> [ 396.218967] BTRFS error (device sda2): block=10442806968320 read
> >>>>> time tree block corru
> >>>>> ption detected
> >>>>>
> >>>>>
> >>>>> Interestingly. that 18446... number is a power of 2, looks like maybe
> >>>>> a bit flip? dmesg, uname, etc included in pastebin below. "btrfs
> >>>>> check" found no problems with fs on either kernel version. Would like
> >>>>> to figure out how to fix this, if possible.
> >>>>>
> >>>>> https://pastebin.com/0ESPU9Z6
> >>>>>
> >>>>> Thank you for any assistance,
> >>>>> -- Laurence Michaels.