* btrfstune --convert-to-block-group-tree segfaulted. now filesystem is unmountable
@ 2023-09-21 13:27 Konstantinos Skarlatos
2023-09-21 21:06 ` Qu Wenruo
0 siblings, 1 reply; 8+ messages in thread
From: Konstantinos Skarlatos @ 2023-09-21 13:27 UTC (permalink / raw)
To: linux-btrfs
Hi all,
i tried to convert my BTRFS filesystem to block-group-tree but it
segfaulted and now the fs is not mountable.
❯ btrfstune --convert-to-block-group-tree /dev/sda
[1] 174047 segmentation fault (core dumped) btrfstune
--convert-to-block-group-tree /dev/sda
[2531715.190802] btrfstune[174047]: segfault at 1f ip 000055ec409fd198
sp 00007ffd0a772eb0 error 4 in btrfstune[55ec409d6000+6a000] likely on
CPU 3 (core 2, socket 0)
[2531715.190818] Code: 40 00 f3 0f 1e fa 41 56 41 55 49 89 fd 41 54 49
89 f4 55 89 d5 53 48 8b 5f 68 49 89 ee 48 85 db 74 3f 48 8d 74 35 00 0f
1f 00 <48> 8b 43 20 48 8b 4b 28 48 01 c1 49 39 cc 0f 83 8c 00 00 00 48 39
[174131]: Process 174047 (btrfstune) of user 0 dumped core.
Stack trace of thread
174047:
#0 0x000055ec409fd198
alloc_extent_buffer (btrfstune + 0x34198)
#1 0x000055ec409ee4f5
read_tree_block (btrfstune + 0x254f5)
#2 0x000055ec409db5a6
read_node_slot (btrfstune + 0x125a6)
#3 0x000055ec409e6e2d
n/a (btrfstune + 0x1de2d)
#4 0x000055ec409e8a4d
n/a (btrfstune + 0x1fa4d)
#5 0x000055ec409def01
btrfs_search_slot (btrfstune + 0x15f01)
#6 0x000055ec409e9c79
btrfs_insert_empty_items (btrfstune + 0x20c79)
#7 0x000055ec40a0090c
n/a (btrfstune + 0x3790c)
#8 0x000055ec40a05185
n/a (btrfstune + 0x3c185)
#9 0x000055ec40a05c75
add_to_free_space_tree (btrfstune + 0x3cc75)
#10 0x000055ec40a3ec49
n/a (btrfstune + 0x75c49)
#11 0x000055ec409fb52a
btrfs_run_delayed_refs (btrfstune + 0x3252a)
#12 0x000055ec40a13091
btrfs_commit_transaction (btrfstune + 0x4a091)
#13 0x000055ec409dcfdd
convert_to_bg_tree (btrfstune + 0x13fdd)
#14 0x000055ec409d640a
main (btrfstune + 0xd40a)
#15 0x00007f44ace27cd0
n/a (libc.so.6 + 0x27cd0)
#16 0x00007f44ace27d8a
__libc_start_main (libc.so.6 + 0x27d8a)
#17 0x000055ec409d7db5
_start (btrfstune + 0xedb5)
ELF object binary
architecture: AMD x86-64
❯ btrfstune --convert-from-block-group-tree /dev/sda
ERROR: filesystem doesn't have block-group-tree feature
❯ mount /dev/sda /storage/btrfs -o ro
mount: /storage/btrfs: wrong fs type, bad option, bad superblock on
/dev/sda, missing codepage or helper program, or other error.
dmesg(1) may have more information after failed mount system call.
Sep 19 17:18:23 elsinki kernel: BTRFS info (device sda): using crc32c
(crc32c-generic) checksum algorithm
Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): unrecognized
or unsupported super flag: 274877906944
Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): superblock
contains fatal errors
Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): open_ctree failed
❯ btrfstune --convert-to-block-group-tree /dev/sda
ERROR: failed to find block group for bytenr 20196285349888
ERROR: failed to convert the filesystem to block group tree feature
extent buffer leak: start 17825576632320 len 16384
❯ btrfs filesystem show
Label: none uuid: 5a583d35-3eb2-410b-9044-1ac87a062247
Total devices 3 FS bytes used 9.53TiB
devid 1 size 3.64TiB used 3.64TiB path /dev/sda
devid 2 size 3.64TiB used 3.64TiB path /dev/sdc
devid 3 size 3.64TiB used 3.64TiB path /dev/sdd
❯ btrfs check --mode lowmem /dev/sda
Opening filesystem to check...
Checking filesystem on /dev/sda
UUID: 5a583d35-3eb2-410b-9044-1ac87a062247
[1/7] checking root items
[2/7] checking extents
ERROR: chunk [20197359091712 20198432833536) doesn't have related block
group item
ERROR: chunk [20198432833536 20199506575360) doesn't have related block
group item
ERROR: chunk [20199506575360 20200580317184) doesn't have related block
group item
ERROR: chunk [20200580317184 20201654059008) doesn't have related block
group item
ERROR: chunk [20201654059008 20202727800832) doesn't have related block
group item
ERROR: chunk [20202727800832 20203801542656) doesn't have related block
group item
ERROR: chunk [20203801542656 20204875284480) doesn't have related block
group item
ERROR: chunk [20204875284480 20205949026304) doesn't have related block
group item
ERROR: chunk [20205949026304 20207022768128) doesn't have related block
group item
ERROR: chunk [20207022768128 20208096509952) doesn't have related block
group item
ERROR: chunk [20208096509952 20209170251776) doesn't have related block
group item
ERROR: chunk [20209170251776 20210243993600) doesn't have related block
group item
ERROR: chunk [20210243993600 20211317735424) doesn't have related block
group item
ERROR: chunk [20211317735424 20212391477248) doesn't have related block
group item
ERROR: chunk [20212391477248 20213465219072) doesn't have related block
group item
ERROR: chunk [20213465219072 20214538960896) doesn't have related block
group item
ERROR: chunk [20214538960896 20215612702720) doesn't have related block
group item
ERROR: chunk [20215612702720 20216686444544) doesn't have related block
group item
ERROR: chunk [20216686444544 20217760186368) doesn't have related block
group item
ERROR: chunk [20217760186368 20218833928192) doesn't have related block
group item
ERROR: chunk [20218833928192 20219907670016) doesn't have related block
group item
ERROR: chunk [20219907670016 20220981411840) doesn't have related block
group item
ERROR: chunk [20220981411840 20222055153664) doesn't have related block
group item
ERROR: chunk [20222055153664 20223128895488) doesn't have related block
group item
ERROR: chunk [20223128895488 20224202637312) doesn't have related block
group item
ERROR: chunk [20224202637312 20225276379136) doesn't have related block
group item
ERROR: chunk [20225276379136 20226350120960) doesn't have related block
group item
ERROR: chunk [20226350120960 20227423862784) doesn't have related block
group item
ERROR: chunk [20227423862784 20228497604608) doesn't have related block
group item
ERROR: chunk [20228497604608 20229571346432) doesn't have related block
group item
ERROR: chunk [20229571346432 20230645088256) doesn't have related block
group item
ERROR: chunk [20230645088256 20231718830080) doesn't have related block
group item
ERROR: chunk [20231718830080 20232792571904) doesn't have related block
group item
ERROR: chunk [20232792571904 20233866313728) doesn't have related block
group item
ERROR: chunk [20233866313728 20234940055552) doesn't have related block
group item
ERROR: chunk [20234940055552 20236013797376) doesn't have related block
group item
ERROR: chunk [20236013797376 20237087539200) doesn't have related block
group item
ERROR: chunk [20237087539200 20238161281024) doesn't have related block
group item
ERROR: chunk [20238161281024 20239235022848) doesn't have related block
group item
ERROR: chunk [20239235022848 20240308764672) doesn't have related block
group item
ERROR: chunk [20240308764672 20241382506496) doesn't have related block
group item
ERROR: chunk [20241382506496 20242456248320) doesn't have related block
group item
ERROR: chunk [20243529990144 20244603731968) doesn't have related block
group item
ERROR: chunk [20244603731968 20245677473792) doesn't have related block
group item
ERROR: chunk [20245677473792 20246751215616) doesn't have related block
group item
ERROR: chunk [20246751215616 20247824957440) doesn't have related block
group item
ERROR: chunk [20247824957440 20248898699264) doesn't have related block
group item
ERROR: chunk [20248898699264 20249972441088) doesn't have related block
group item
ERROR: chunk [20249972441088 20251046182912) doesn't have related block
group item
ERROR: chunk [20251046182912 20252119924736) doesn't have related block
group item
ERROR: chunk [20252119924736 20253193666560) doesn't have related block
group item
ERROR: chunk [20253193666560 20254267408384) doesn't have related block
group item
ERROR: chunk [20254267408384 20255341150208) doesn't have related block
group item
ERROR: chunk [20255341150208 20256414892032) doesn't have related block
group item
ERROR: chunk [20256414892032 20257488633856) doesn't have related block
group item
ERROR: chunk [20257488633856 20258562375680) doesn't have related block
group item
ERROR: chunk [20258562375680 20259636117504) doesn't have related block
group item
ERROR: chunk [20259636117504 20260709859328) doesn't have related block
group item
ERROR: chunk [20260709859328 20261783601152) doesn't have related block
group item
ERROR: chunk [20261783601152 20262857342976) doesn't have related block
group item
ERROR: chunk [20262857342976 20263931084800) doesn't have related block
group item
ERROR: chunk [20263931084800 20265004826624) doesn't have related block
group item
ERROR: chunk [20265004826624 20266078568448) doesn't have related block
group item
ERROR: chunk [20266078568448 20267152310272) doesn't have related block
group item
ERROR: chunk [20267152310272 20268226052096) doesn't have related block
group item
ERROR: chunk [20268226052096 20269299793920) doesn't have related block
group item
ERROR: chunk [20269299793920 20270373535744) doesn't have related block
group item
ERROR: chunk [20270373535744 20271447277568) doesn't have related block
group item
ERROR: chunk [20271447277568 20272521019392) doesn't have related block
group item
ERROR: chunk [20272521019392 20273594761216) doesn't have related block
group item
ERROR: chunk [20273594761216 20274668503040) doesn't have related block
group item
ERROR: chunk [20274668503040 20275742244864) doesn't have related block
group item
ERROR: chunk [20275742244864 20276815986688) doesn't have related block
group item
ERROR: chunk [20276815986688 20277889728512) doesn't have related block
group item
ERROR: chunk [20277889728512 20278963470336) doesn't have related block
group item
ERROR: chunk [20278963470336 20280037212160) doesn't have related block
group item
ERROR: chunk [20280037212160 20281110953984) doesn't have related block
group item
ERROR: chunk [20281110953984 20282184695808) doesn't have related block
group item
ERROR: chunk [20282184695808 20283258437632) doesn't have related block
group item
ERROR: chunk [20283258437632 20284332179456) doesn't have related block
group item
ERROR: chunk [20284332179456 20285405921280) doesn't have related block
group item
ERROR: chunk [20285405921280 20286479663104) doesn't have related block
group item
ERROR: chunk [20286479663104 20287553404928) doesn't have related block
group item
ERROR: chunk [20287553404928 20288627146752) doesn't have related block
group item
ERROR: chunk [20288627146752 20289700888576) doesn't have related block
group item
ERROR: chunk [20289700888576 20290774630400) doesn't have related block
group item
ERROR: chunk [20290774630400 20291848372224) doesn't have related block
group item
ERROR: chunk [20291848372224 20292922114048) doesn't have related block
group item
ERROR: chunk [20292922114048 20293995855872) doesn't have related block
group item
ERROR: chunk [20293995855872 20295069597696) doesn't have related block
group item
ERROR: chunk [20295069597696 20296143339520) doesn't have related block
group item
ERROR: chunk [20296143339520 20297217081344) doesn't have related block
group item
ERROR: chunk [20297217081344 20298290823168) doesn't have related block
group item
ERROR: chunk [20298290823168 20299364564992) doesn't have related block
group item
ERROR: chunk [20299364564992 20300438306816) doesn't have related block
group item
ERROR: chunk [20300438306816 20301512048640) doesn't have related block
group item
ERROR: chunk [20301512048640 20302585790464) doesn't have related block
group item
ERROR: chunk [20302585790464 20303659532288) doesn't have related block
group item
ERROR: chunk [20303659532288 20304733274112) doesn't have related block
group item
ERROR: chunk [20304733274112 20305807015936) doesn't have related block
group item
ERROR: chunk [20305807015936 20306880757760) doesn't have related block
group item
ERROR: chunk [20306880757760 20307954499584) doesn't have related block
group item
ERROR: chunk [20307954499584 20309028241408) doesn't have related block
group item
ERROR: chunk [20309028241408 20310101983232) doesn't have related block
group item
ERROR: chunk [20310101983232 20311175725056) doesn't have related block
group item
ERROR: chunk [20311175725056 20312249466880) doesn't have related block
group item
ERROR: chunk [20312249466880 20313323208704) doesn't have related block
group item
ERROR: chunk [20313323208704 20314396950528) doesn't have related block
group item
ERROR: chunk [20314396950528 20315470692352) doesn't have related block
group item
ERROR: chunk [20315470692352 20316544434176) doesn't have related block
group item
ERROR: chunk [20316544434176 20317618176000) doesn't have related block
group item
ERROR: chunk [20317618176000 20318691917824) doesn't have related block
group item
ERROR: chunk [20318691917824 20319765659648) doesn't have related block
group item
ERROR: chunk [20319765659648 20320839401472) doesn't have related block
group item
ERROR: chunk [20320839401472 20321913143296) doesn't have related block
group item
ERROR: chunk [20321913143296 20322986885120) doesn't have related block
group item
ERROR: chunk [20322986885120 20324060626944) doesn't have related block
group item
ERROR: chunk [20324060626944 20325134368768) doesn't have related block
group item
ERROR: chunk [20325134368768 20326208110592) doesn't have related block
group item
ERROR: chunk [20326208110592 20327281852416) doesn't have related block
group item
ERROR: chunk [20327281852416 20328355594240) doesn't have related block
group item
ERROR: chunk [20328355594240 20329429336064) doesn't have related block
group item
ERROR: chunk [20329429336064 20330503077888) doesn't have related block
group item
ERROR: chunk [20330503077888 20331576819712) doesn't have related block
group item
ERROR: chunk [20331576819712 20332650561536) doesn't have related block
group item
ERROR: chunk [20332650561536 20333724303360) doesn't have related block
group item
ERROR: chunk [20333724303360 20334798045184) doesn't have related block
group item
ERROR: chunk [20334798045184 20335871787008) doesn't have related block
group item
ERROR: chunk [20335871787008 20336945528832) doesn't have related block
group item
ERROR: chunk [20336945528832 20338019270656) doesn't have related block
group item
ERROR: chunk [20338019270656 20339093012480) doesn't have related block
group item
ERROR: chunk [20339093012480 20340166754304) doesn't have related block
group item
ERROR: chunk [20340166754304 20341240496128) doesn't have related block
group item
ERROR: chunk [20341240496128 20342314237952) doesn't have related block
group item
ERROR: chunk [20342314237952 20343387979776) doesn't have related block
group item
ERROR: chunk [20343387979776 20344461721600) doesn't have related block
group item
ERROR: chunk [20344461721600 20345535463424) doesn't have related block
group item
ERROR: chunk [20345535463424 20346609205248) doesn't have related block
group item
ERROR: chunk [20346609205248 20347682947072) doesn't have related block
group item
ERROR: chunk [20347682947072 20348756688896) doesn't have related block
group item
ERROR: chunk [20348756688896 20349830430720) doesn't have related block
group item
ERROR: chunk [20349830430720 20350904172544) doesn't have related block
group item
ERROR: chunk [20350904172544 20351977914368) doesn't have related block
group item
ERROR: chunk [20351977914368 20353051656192) doesn't have related block
group item
ERROR: chunk [20353051656192 20354125398016) doesn't have related block
group item
ERROR: chunk [20354125398016 20355199139840) doesn't have related block
group item
ERROR: chunk [20355199139840 20356272881664) doesn't have related block
group item
ERROR: chunk [20356272881664 20357346623488) doesn't have related block
group item
ERROR: chunk [20357346623488 20358420365312) doesn't have related block
group item
ERROR: chunk [20358420365312 20359494107136) doesn't have related block
group item
ERROR: chunk [20359494107136 20360567848960) doesn't have related block
group item
ERROR: chunk [20360567848960 20361641590784) doesn't have related block
group item
ERROR: chunk [20361641590784 20362715332608) doesn't have related block
group item
ERROR: chunk [20362715332608 20363789074432) doesn't have related block
group item
ERROR: chunk [20363789074432 20364862816256) doesn't have related block
group item
ERROR: chunk [20364862816256 20365936558080) doesn't have related block
group item
ERROR: chunk [20365936558080 20367010299904) doesn't have related block
group item
ERROR: chunk [20367010299904 20368084041728) doesn't have related block
group item
ERROR: chunk [20368084041728 20369157783552) doesn't have related block
group item
ERROR: chunk [20369157783552 20370231525376) doesn't have related block
group item
ERROR: chunk [20370231525376 20371305267200) doesn't have related block
group item
ERROR: chunk [20371305267200 20372379009024) doesn't have related block
group item
ERROR: chunk [20372379009024 20373452750848) doesn't have related block
group item
ERROR: chunk [20373452750848 20374526492672) doesn't have related block
group item
ERROR: chunk [20374526492672 20375600234496) doesn't have related block
group item
ERROR: chunk [20375600234496 20376673976320) doesn't have related block
group item
ERROR: chunk [20376673976320 20377747718144) doesn't have related block
group item
ERROR: chunk [20377747718144 20378821459968) doesn't have related block
group item
ERROR: chunk [20378821459968 20379895201792) doesn't have related block
group item
ERROR: chunk [20379895201792 20380968943616) doesn't have related block
group item
ERROR: chunk [20380968943616 20382042685440) doesn't have related block
group item
ERROR: chunk [20382042685440 20383116427264) doesn't have related block
group item
ERROR: chunk [20383116427264 20384190169088) doesn't have related block
group item
ERROR: chunk [20384190169088 20385263910912) doesn't have related block
group item
ERROR: chunk [20385263910912 20386337652736) doesn't have related block
group item
ERROR: chunk [20386337652736 20387411394560) doesn't have related block
group item
ERROR: chunk [20387411394560 20388485136384) doesn't have related block
group item
ERROR: chunk [20388485136384 20389558878208) doesn't have related block
group item
ERROR: chunk [20389558878208 20390632620032) doesn't have related block
group item
ERROR: chunk [20390632620032 20391706361856) doesn't have related block
group item
ERROR: chunk [20391706361856 20392780103680) doesn't have related block
group item
ERROR: chunk [20392780103680 20393853845504) doesn't have related block
group item
ERROR: chunk [20393853845504 20394927587328) doesn't have related block
group item
ERROR: chunk [20394927587328 20396001329152) doesn't have related block
group item
ERROR: chunk [20396001329152 20397075070976) doesn't have related block
group item
ERROR: chunk [20397075070976 20398148812800) doesn't have related block
group item
ERROR: chunk [20398148812800 20399222554624) doesn't have related block
group item
ERROR: chunk [20399222554624 20400296296448) doesn't have related block
group item
ERROR: chunk [20400296296448 20401370038272) doesn't have related block
group item
ERROR: chunk [20401370038272 20402443780096) doesn't have related block
group item
ERROR: chunk [20402443780096 20403517521920) doesn't have related block
group item
ERROR: chunk [20403517521920 20404591263744) doesn't have related block
group item
ERROR: chunk [20404591263744 20405665005568) doesn't have related block
group item
ERROR: chunk [20405665005568 20406738747392) doesn't have related block
group item
ERROR: chunk [20406738747392 20407812489216) doesn't have related block
group item
ERROR: chunk [20407812489216 20408886231040) doesn't have related block
group item
ERROR: chunk [20408886231040 20409959972864) doesn't have related block
group item
ERROR: chunk [20409959972864 20411033714688) doesn't have related block
group item
ERROR: chunk [20411033714688 20412107456512) doesn't have related block
group item
ERROR: chunk [20412107456512 20413181198336) doesn't have related block
group item
ERROR: chunk [20413181198336 20414254940160) doesn't have related block
group item
ERROR: chunk [20414254940160 20415328681984) doesn't have related block
group item
ERROR: chunk [20415328681984 20416402423808) doesn't have related block
group item
ERROR: chunk [20416402423808 20417476165632) doesn't have related block
group item
ERROR: chunk [20417476165632 20418549907456) doesn't have related block
group item
ERROR: chunk [20418549907456 20419623649280) doesn't have related block
group item
ERROR: chunk [20419623649280 20420697391104) doesn't have related block
group item
ERROR: chunk [20420697391104 20421771132928) doesn't have related block
group item
ERROR: chunk [20421771132928 20422844874752) doesn't have related block
group item
ERROR: chunk [20422844874752 20423918616576) doesn't have related block
group item
ERROR: chunk [20423918616576 20424992358400) doesn't have related block
group item
ERROR: chunk [20424992358400 20426066100224) doesn't have related block
group item
ERROR: chunk [20426066100224 20427139842048) doesn't have related block
group item
ERROR: chunk [20427139842048 20428213583872) doesn't have related block
group item
ERROR: chunk [20428213583872 20429287325696) doesn't have related block
group item
ERROR: chunk [20429287325696 20430361067520) doesn't have related block
group item
ERROR: chunk [20430361067520 20431434809344) doesn't have related block
group item
ERROR: chunk [20431434809344 20432508551168) doesn't have related block
group item
ERROR: chunk [20432508551168 20433582292992) doesn't have related block
group item
ERROR: chunk [20433582292992 20434656034816) doesn't have related block
group item
ERROR: chunk [20434656034816 20435729776640) doesn't have related block
group item
ERROR: chunk [20435729776640 20436803518464) doesn't have related block
group item
ERROR: chunk [20436803518464 20437877260288) doesn't have related block
group item
ERROR: chunk [20437877260288 20438951002112) doesn't have related block
group item
ERROR: chunk [20438951002112 20440024743936) doesn't have related block
group item
ERROR: chunk [20440024743936 20441098485760) doesn't have related block
group item
ERROR: chunk [20441098485760 20442172227584) doesn't have related block
group item
ERROR: chunk [20442172227584 20443245969408) doesn't have related block
group item
ERROR: chunk [20443245969408 20444319711232) doesn't have related block
group item
ERROR: chunk [20444319711232 20445393453056) doesn't have related block
group item
ERROR: chunk [20445393453056 20446467194880) doesn't have related block
group item
ERROR: chunk [20446467194880 20447540936704) doesn't have related block
group item
ERROR: chunk [20447540936704 20448614678528) doesn't have related block
group item
ERROR: chunk [20448614678528 20449688420352) doesn't have related block
group item
ERROR: chunk [20449688420352 20450762162176) doesn't have related block
group item
ERROR: chunk [20450762162176 20451835904000) doesn't have related block
group item
ERROR: chunk [20451835904000 20452909645824) doesn't have related block
group item
ERROR: chunk [20452909645824 20453983387648) doesn't have related block
group item
ERROR: chunk [20453983387648 20455057129472) doesn't have related block
group item
ERROR: chunk [20455057129472 20456130871296) doesn't have related block
group item
ERROR: chunk [20456130871296 20457204613120) doesn't have related block
group item
ERROR: chunk [20457204613120 20458278354944) doesn't have related block
group item
ERROR: chunk [20458278354944 20459352096768) doesn't have related block
group item
ERROR: chunk [20459352096768 20460425838592) doesn't have related block
group item
ERROR: chunk [20460425838592 20461499580416) doesn't have related block
group item
ERROR: chunk [20461499580416 20462573322240) doesn't have related block
group item
ERROR: chunk [20462573322240 20463647064064) doesn't have related block
group item
ERROR: chunk [20463647064064 20464720805888) doesn't have related block
group item
ERROR: chunk [20464720805888 20465794547712) doesn't have related block
group item
ERROR: chunk [20465794547712 20466868289536) doesn't have related block
group item
ERROR: chunk [20466868289536 20467942031360) doesn't have related block
group item
ERROR: chunk [20467942031360 20469015773184) doesn't have related block
group item
ERROR: chunk [20469015773184 20470089515008) doesn't have related block
group item
ERROR: chunk [20470089515008 20471163256832) doesn't have related block
group item
ERROR: chunk [20471163256832 20472236998656) doesn't have related block
group item
ERROR: chunk [20472236998656 20473310740480) doesn't have related block
group item
ERROR: chunk [20473310740480 20474384482304) doesn't have related block
group item
ERROR: chunk [20474384482304 20475458224128) doesn't have related block
group item
ERROR: chunk [20475458224128 20476531965952) doesn't have related block
group item
ERROR: chunk [20476531965952 20477605707776) doesn't have related block
group item
ERROR: chunk [20477605707776 20478679449600) doesn't have related block
group item
ERROR: chunk [20478679449600 20479753191424) doesn't have related block
group item
ERROR: chunk [20479753191424 20480826933248) doesn't have related block
group item
ERROR: chunk [20480826933248 20481900675072) doesn't have related block
group item
ERROR: chunk [20481900675072 20482974416896) doesn't have related block
group item
ERROR: chunk [20482974416896 20484048158720) doesn't have related block
group item
ERROR: chunk [20484048158720 20485121900544) doesn't have related block
group item
ERROR: chunk [20485121900544 20486195642368) doesn't have related block
group item
ERROR: chunk [20486195642368 20487269384192) doesn't have related block
group item
ERROR: chunk [20487269384192 20488343126016) doesn't have related block
group item
ERROR: chunk [20488343126016 20489416867840) doesn't have related block
group item
ERROR: chunk [20489416867840 20490490609664) doesn't have related block
group item
ERROR: chunk [20490490609664 20491564351488) doesn't have related block
group item
ERROR: chunk [20491564351488 20492638093312) doesn't have related block
group item
ERROR: chunk [20492638093312 20493711835136) doesn't have related block
group item
ERROR: chunk [20493711835136 20494785576960) doesn't have related block
group item
ERROR: chunk [20494785576960 20495859318784) doesn't have related block
group item
ERROR: chunk [20495859318784 20496933060608) doesn't have related block
group item
ERROR: chunk [20496933060608 20498006802432) doesn't have related block
group item
ERROR: chunk [20498006802432 20499080544256) doesn't have related block
group item
ERROR: chunk [20499080544256 20500154286080) doesn't have related block
group item
ERROR: chunk [20500154286080 20501228027904) doesn't have related block
group item
ERROR: chunk [20501228027904 20502301769728) doesn't have related block
group item
ERROR: chunk [20502301769728 20503375511552) doesn't have related block
group item
ERROR: chunk [20503375511552 20504449253376) doesn't have related block
group item
ERROR: chunk [20504449253376 20505522995200) doesn't have related block
group item
ERROR: chunk [20505522995200 20506596737024) doesn't have related block
group item
ERROR: chunk [20506596737024 20507670478848) doesn't have related block
group item
ERROR: chunk [20507670478848 20508744220672) doesn't have related block
group item
ERROR: chunk [20508744220672 20509817962496) doesn't have related block
group item
ERROR: chunk [20509817962496 20510891704320) doesn't have related block
group item
ERROR: chunk [20510891704320 20511965446144) doesn't have related block
group item
ERROR: chunk [20511965446144 20513039187968) doesn't have related block
group item
ERROR: chunk [20513039187968 20514112929792) doesn't have related block
group item
ERROR: chunk [20514112929792 20515186671616) doesn't have related block
group item
ERROR: chunk [20515186671616 20516260413440) doesn't have related block
group item
ERROR: chunk [20516260413440 20517334155264) doesn't have related block
group item
ERROR: chunk [20517334155264 20518407897088) doesn't have related block
group item
ERROR: chunk [20518407897088 20519481638912) doesn't have related block
group item
ERROR: chunk [20519481638912 20520555380736) doesn't have related block
group item
ERROR: chunk [20520555380736 20521629122560) doesn't have related block
group item
ERROR: chunk [20521629122560 20522702864384) doesn't have related block
group item
ERROR: chunk [20522702864384 20523776606208) doesn't have related block
group item
ERROR: chunk [20523776606208 20524850348032) doesn't have related block
group item
ERROR: chunk [20524850348032 20525924089856) doesn't have related block
group item
ERROR: chunk [20525924089856 20526997831680) doesn't have related block
group item
ERROR: chunk [20526997831680 20528071573504) doesn't have related block
group item
ERROR: chunk [20528071573504 20529145315328) doesn't have related block
group item
ERROR: chunk [20529145315328 20530219057152) doesn't have related block
group item
ERROR: chunk [20530219057152 20531292798976) doesn't have related block
group item
ERROR: chunk [20531292798976 20532366540800) doesn't have related block
group item
ERROR: chunk [20532366540800 20533440282624) doesn't have related block
group item
ERROR: chunk [20533440282624 20534514024448) doesn't have related block
group item
ERROR: chunk [20534514024448 20535587766272) doesn't have related block
group item
ERROR: chunk [20535587766272 20536661508096) doesn't have related block
group item
ERROR: chunk [20536661508096 20537735249920) doesn't have related block
group item
ERROR: chunk [20537735249920 20538808991744) doesn't have related block
group item
ERROR: chunk [20538808991744 20539882733568) doesn't have related block
group item
ERROR: chunk [20539882733568 20540956475392) doesn't have related block
group item
ERROR: chunk [20540956475392 20542030217216) doesn't have related block
group item
ERROR: chunk [20542030217216 20543103959040) doesn't have related block
group item
ERROR: chunk [20543103959040 20544177700864) doesn't have related block
group item
ERROR: chunk [20544177700864 20545251442688) doesn't have related block
group item
ERROR: chunk [20545251442688 20546325184512) doesn't have related block
group item
ERROR: chunk [20546325184512 20547398926336) doesn't have related block
group item
ERROR: chunk [20547398926336 20548472668160) doesn't have related block
group item
ERROR: chunk [20548472668160 20549546409984) doesn't have related block
group item
ERROR: chunk [20549546409984 20550620151808) doesn't have related block
group item
ERROR: chunk [20550620151808 20551693893632) doesn't have related block
group item
ERROR: chunk [20551693893632 20552767635456) doesn't have related block
group item
ERROR: chunk [20552767635456 20553841377280) doesn't have related block
group item
ERROR: chunk [20553841377280 20554915119104) doesn't have related block
group item
ERROR: chunk [20554915119104 20555988860928) doesn't have related block
group item
ERROR: chunk [20555988860928 20557062602752) doesn't have related block
group item
ERROR: chunk [20557062602752 20558136344576) doesn't have related block
group item
ERROR: chunk [20558136344576 20559210086400) doesn't have related block
group item
ERROR: chunk [20559210086400 20560283828224) doesn't have related block
group item
ERROR: chunk [20560283828224 20561357570048) doesn't have related block
group item
ERROR: chunk [20561357570048 20562431311872) doesn't have related block
group item
ERROR: chunk [20562431311872 20563505053696) doesn't have related block
group item
ERROR: chunk [20563505053696 20564578795520) doesn't have related block
group item
ERROR: chunk [20564578795520 20565652537344) doesn't have related block
group item
ERROR: chunk [20565652537344 20566726279168) doesn't have related block
group item
ERROR: chunk [20566726279168 20567800020992) doesn't have related block
group item
ERROR: chunk [20567800020992 20568873762816) doesn't have related block
group item
ERROR: chunk [20568873762816 20569947504640) doesn't have related block
group item
ERROR: chunk [20569947504640 20571021246464) doesn't have related block
group item
ERROR: chunk [20571021246464 20572094988288) doesn't have related block
group item
ERROR: chunk [20572094988288 20573168730112) doesn't have related block
group item
ERROR: chunk [20573168730112 20574242471936) doesn't have related block
group item
ERROR: chunk [20574242471936 20575316213760) doesn't have related block
group item
ERROR: chunk [20575316213760 20576389955584) doesn't have related block
group item
ERROR: chunk [20576389955584 20577463697408) doesn't have related block
group item
ERROR: chunk [20577463697408 20578537439232) doesn't have related block
group item
ERROR: chunk [20578537439232 20579611181056) doesn't have related block
group item
ERROR: chunk [20579611181056 20580684922880) doesn't have related block
group item
ERROR: chunk [20580684922880 20581758664704) doesn't have related block
group item
ERROR: chunk [20581758664704 20582832406528) doesn't have related block
group item
ERROR: chunk [20582832406528 20583906148352) doesn't have related block
group item
ERROR: chunk [20583906148352 20584979890176) doesn't have related block
group item
ERROR: chunk [20584979890176 20586053632000) doesn't have related block
group item
ERROR: chunk [20586053632000 20587127373824) doesn't have related block
group item
ERROR: chunk [20587127373824 20588201115648) doesn't have related block
group item
ERROR: chunk [20588201115648 20589274857472) doesn't have related block
group item
ERROR: chunk [20589274857472 20590348599296) doesn't have related block
group item
ERROR: chunk [20590348599296 20591422341120) doesn't have related block
group item
ERROR: chunk [20591422341120 20592496082944) doesn't have related block
group item
ERROR: chunk [20592496082944 20593569824768) doesn't have related block
group item
ERROR: chunk [20593569824768 20594643566592) doesn't have related block
group item
ERROR: chunk [20594643566592 20595717308416) doesn't have related block
group item
ERROR: chunk [20595717308416 20596791050240) doesn't have related block
group item
ERROR: chunk [20596791050240 20597864792064) doesn't have related block
group item
ERROR: chunk [20597864792064 20598938533888) doesn't have related block
group item
ERROR: chunk [20598938533888 20600012275712) doesn't have related block
group item
ERROR: chunk [20600012275712 20601086017536) doesn't have related block
group item
ERROR: chunk [20601086017536 20602159759360) doesn't have related block
group item
ERROR: chunk [20602159759360 20603233501184) doesn't have related block
group item
ERROR: chunk [20603233501184 20604307243008) doesn't have related block
group item
ERROR: chunk [20604307243008 20605380984832) doesn't have related block
group item
ERROR: chunk [20605380984832 20606454726656) doesn't have related block
group item
ERROR: chunk [20606454726656 20607528468480) doesn't have related block
group item
ERROR: chunk [20607528468480 20608602210304) doesn't have related block
group item
ERROR: chunk [20608602210304 20609675952128) doesn't have related block
group item
ERROR: chunk [20609675952128 20610749693952) doesn't have related block
group item
ERROR: chunk [20610749693952 20611823435776) doesn't have related block
group item
ERROR: chunk [20611823435776 20612897177600) doesn't have related block
group item
ERROR: chunk [20612897177600 20613970919424) doesn't have related block
group item
ERROR: chunk [20613970919424 20615044661248) doesn't have related block
group item
ERROR: chunk [20615044661248 20616118403072) doesn't have related block
group item
ERROR: chunk [20616118403072 20617192144896) doesn't have related block
group item
ERROR: chunk [20617192144896 20618265886720) doesn't have related block
group item
ERROR: chunk [20618265886720 20619339628544) doesn't have related block
group item
ERROR: chunk [20619339628544 20620413370368) doesn't have related block
group item
ERROR: chunk [20620413370368 20621487112192) doesn't have related block
group item
ERROR: chunk [20621487112192 20622560854016) doesn't have related block
group item
ERROR: chunk [20622560854016 20623634595840) doesn't have related block
group item
ERROR: chunk [20623634595840 20624708337664) doesn't have related block
group item
ERROR: chunk [20624708337664 20625782079488) doesn't have related block
group item
ERROR: chunk [20625782079488 20626855821312) doesn't have related block
group item
ERROR: chunk [20626855821312 20627929563136) doesn't have related block
group item
ERROR: chunk [20627929563136 20629003304960) doesn't have related block
group item
ERROR: chunk [20629003304960 20630077046784) doesn't have related block
group item
ERROR: chunk [20630077046784 20631150788608) doesn't have related block
group item
ERROR: chunk [20631150788608 20632224530432) doesn't have related block
group item
ERROR: chunk [20632224530432 20633298272256) doesn't have related block
group item
ERROR: chunk [20633298272256 20634372014080) doesn't have related block
group item
ERROR: chunk [20634372014080 20635445755904) doesn't have related block
group item
ERROR: chunk [20635445755904 20636519497728) doesn't have related block
group item
ERROR: chunk [20636519497728 20637593239552) doesn't have related block
group item
ERROR: chunk [20637593239552 20638666981376) doesn't have related block
group item
ERROR: chunk [20638666981376 20639740723200) doesn't have related block
group item
ERROR: chunk [20639740723200 20640814465024) doesn't have related block
group item
ERROR: chunk [20640814465024 20641888206848) doesn't have related block
group item
ERROR: chunk [20641888206848 20642961948672) doesn't have related block
group item
ERROR: chunk [20642961948672 20644035690496) doesn't have related block
group item
ERROR: chunk [20644035690496 20645109432320) doesn't have related block
group item
ERROR: chunk [20645109432320 20646183174144) doesn't have related block
group item
ERROR: chunk [20646183174144 20647256915968) doesn't have related block
group item
ERROR: chunk [20647256915968 20648330657792) doesn't have related block
group item
ERROR: chunk [20648330657792 20649404399616) doesn't have related block
group item
ERROR: chunk [20649404399616 20650478141440) doesn't have related block
group item
ERROR: chunk [20650478141440 20651551883264) doesn't have related block
group item
ERROR: chunk [20651551883264 20652625625088) doesn't have related block
group item
ERROR: chunk [20652625625088 20653699366912) doesn't have related block
group item
ERROR: chunk [20653699366912 20654773108736) doesn't have related block
group item
ERROR: chunk [20654773108736 20655846850560) doesn't have related block
group item
ERROR: chunk [20655846850560 20656920592384) doesn't have related block
group item
ERROR: chunk [20656920592384 20657994334208) doesn't have related block
group item
ERROR: chunk [20657994334208 20659068076032) doesn't have related block
group item
ERROR: chunk [20659068076032 20660141817856) doesn't have related block
group item
ERROR: chunk [20660141817856 20661215559680) doesn't have related block
group item
ERROR: chunk [20661215559680 20662289301504) doesn't have related block
group item
ERROR: chunk [20662289301504 20663363043328) doesn't have related block
group item
ERROR: chunk [20663363043328 20664436785152) doesn't have related block
group item
ERROR: chunk [20664436785152 20665510526976) doesn't have related block
group item
ERROR: chunk [20665510526976 20666584268800) doesn't have related block
group item
ERROR: chunk [20666584268800 20667658010624) doesn't have related block
group item
ERROR: chunk [20667658010624 20668731752448) doesn't have related block
group item
ERROR: chunk [20668731752448 20669805494272) doesn't have related block
group item
ERROR: chunk [20669805494272 20670879236096) doesn't have related block
group item
ERROR: chunk [20670879236096 20671947538432) doesn't have related block
group item
ERROR: chunk [20671947538432 20672987725824) doesn't have related block
group item
ERROR: chunk [20672987725824 20674027913216) doesn't have related block
group item
ERROR: chunk [20674027913216 20674051833856) doesn't have related block
group item
ERROR: chunk [20674051833856 20674067365888) doesn't have related block
group item
ERROR: chunk [20674067365888 20674079948800) doesn't have related block
group item
ERROR: chunk [20674079948800 20674088337408) doesn't have related block
group item
ERROR: chunk [20674088337408 20674096726016) doesn't have related block
group item
my system specs are:
AMD Phenom(tm) II X4 965 Processor @3400MHz
8GB RAM
❯ uname -r
6.4.9-arch1-1
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: btrfstune --convert-to-block-group-tree segfaulted. now filesystem is unmountable
2023-09-21 13:27 btrfstune --convert-to-block-group-tree segfaulted. now filesystem is unmountable Konstantinos Skarlatos
@ 2023-09-21 21:06 ` Qu Wenruo
2023-09-22 9:32 ` Konstantinos Skarlatos
0 siblings, 1 reply; 8+ messages in thread
From: Qu Wenruo @ 2023-09-21 21:06 UTC (permalink / raw)
To: Konstantinos Skarlatos, linux-btrfs
[-- Attachment #1: Type: text/plain, Size: 6511 bytes --]
On 2023/9/21 22:57, Konstantinos Skarlatos wrote:
> Hi all,
> i tried to convert my BTRFS filesystem to block-group-tree but it
> segfaulted and now the fs is not mountable.
>
> ❯ btrfstune --convert-to-block-group-tree /dev/sda
> [1] 174047 segmentation fault (core dumped) btrfstune
> --convert-to-block-group-tree /dev/sda
>
>
> [2531715.190802] btrfstune[174047]: segfault at 1f ip 000055ec409fd198
> sp 00007ffd0a772eb0 error 4 in btrfstune[55ec409d6000+6a000] likely on
> CPU 3 (core 2, socket 0)
> [2531715.190818] Code: 40 00 f3 0f 1e fa 41 56 41 55 49 89 fd 41 54 49
> 89 f4 55 89 d5 53 48 8b 5f 68 49 89 ee 48 85 db 74 3f 48 8d 74 35 00 0f
> 1f 00 <48> 8b 43 20 48 8b 4b 28 48 01 c1 49 39 cc 0f 83 8c 00 00 00 48 39
>
> [174131]: Process 174047 (btrfstune) of user 0 dumped core.
>
> Stack trace of thread
> 174047:
> #0 0x000055ec409fd198
> alloc_extent_buffer (btrfstune + 0x34198)
> #1 0x000055ec409ee4f5
> read_tree_block (btrfstune + 0x254f5)
> #2 0x000055ec409db5a6
> read_node_slot (btrfstune + 0x125a6)
> #3 0x000055ec409e6e2d
> n/a (btrfstune + 0x1de2d)
> #4 0x000055ec409e8a4d
> n/a (btrfstune + 0x1fa4d)
> #5 0x000055ec409def01
> btrfs_search_slot (btrfstune + 0x15f01)
> #6 0x000055ec409e9c79
> btrfs_insert_empty_items (btrfstune + 0x20c79)
> #7 0x000055ec40a0090c
> n/a (btrfstune + 0x3790c)
> #8 0x000055ec40a05185
> n/a (btrfstune + 0x3c185)
> #9 0x000055ec40a05c75
> add_to_free_space_tree (btrfstune + 0x3cc75)
There seems to be something wrong with free space tree code here.
Not sure which part is causing the problem, the fst or the conversion part.
> #10 0x000055ec40a3ec49
> n/a (btrfstune + 0x75c49)
> #11 0x000055ec409fb52a
> btrfs_run_delayed_refs (btrfstune + 0x3252a)
> #12 0x000055ec40a13091
> btrfs_commit_transaction (btrfstune + 0x4a091)
> #13 0x000055ec409dcfdd
> convert_to_bg_tree (btrfstune + 0x13fdd)
> #14 0x000055ec409d640a
> main (btrfstune + 0xd40a)
> #15 0x00007f44ace27cd0
> n/a (libc.so.6 + 0x27cd0)
> #16 0x00007f44ace27d8a
> __libc_start_main (libc.so.6 + 0x27d8a)
> #17 0x000055ec409d7db5
> _start (btrfstune + 0xedb5)
> ELF object binary
> architecture: AMD x86-64
>
>
> ❯ btrfstune --convert-from-block-group-tree /dev/sda
> ERROR: filesystem doesn't have block-group-tree feature
>
>
> ❯ mount /dev/sda /storage/btrfs -o ro
> mount: /storage/btrfs: wrong fs type, bad option, bad superblock on
> /dev/sda, missing codepage or helper program, or other error.
> dmesg(1) may have more information after failed mount system call.
>
> Sep 19 17:18:23 elsinki kernel: BTRFS info (device sda): using crc32c
> (crc32c-generic) checksum algorithm
> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): unrecognized
> or unsupported super flag: 274877906944
> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): superblock
> contains fatal errors
> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): open_ctree failed
>
>
> ❯ btrfstune --convert-to-block-group-tree /dev/sda
> ERROR: failed to find block group for bytenr 20196285349888
This is the correct way to resume the failed conversion.
But by somehow the block group item seems to be missing from both old
and new trees.
Mind to test if the attached patch can help?
> ERROR: failed to convert the filesystem to block group tree feature
> extent buffer leak: start 17825576632320 len 16384
>
> ❯ btrfs filesystem show
> Label: none uuid: 5a583d35-3eb2-410b-9044-1ac87a062247
> Total devices 3 FS bytes used 9.53TiB
> devid 1 size 3.64TiB used 3.64TiB path /dev/sda
> devid 2 size 3.64TiB used 3.64TiB path /dev/sdc
> devid 3 size 3.64TiB used 3.64TiB path /dev/sdd
>
> ❯ btrfs check --mode lowmem /dev/sda
> Opening filesystem to check...
> Checking filesystem on /dev/sda
> UUID: 5a583d35-3eb2-410b-9044-1ac87a062247
> [1/7] checking root items
> [2/7] checking extents
> ERROR: chunk [20197359091712 20198432833536) doesn't have related block
> group item
[...]> ERROR: chunk [20674088337408 20674096726016) doesn't have related
block
> group item
This shows most of the block groups have been converted.
Hope the patch can finish the conversion.
Thanks,
Qu
>
>
> my system specs are:
> AMD Phenom(tm) II X4 965 Processor @3400MHz
> 8GB RAM
>
> ❯ uname -r
> 6.4.9-arch1-1
>
>
[-- Attachment #2: diff --]
[-- Type: text/plain, Size: 1413 bytes --]
diff --git a/kernel-shared/extent-tree.c b/kernel-shared/extent-tree.c
index 7022643a9843..3fc8bbd191db 100644
--- a/kernel-shared/extent-tree.c
+++ b/kernel-shared/extent-tree.c
@@ -3932,7 +3932,7 @@ int btrfs_convert_one_bg(struct btrfs_trans_handle *trans, u64 bytenr)
* the new root.
*/
ret = insert_block_group_item(trans, bg);
- if (ret < 0) {
+ if (ret < 0 && ret != -EEXIST) {
error("failed to insert block group item into the new root: %d",
ret);
return ret;
diff --git a/tune/convert-bgt.c b/tune/convert-bgt.c
index 77cba3930ae1..4573139cea7f 100644
--- a/tune/convert-bgt.c
+++ b/tune/convert-bgt.c
@@ -80,25 +80,7 @@ int convert_to_bg_tree(struct btrfs_fs_info *fs_info)
}
iterate_bgs:
- if (fs_info->last_converted_bg_bytenr == (u64)-1) {
- ce = last_cache_extent(&fs_info->mapping_tree.cache_tree);
- } else {
- ce = search_cache_extent(&fs_info->mapping_tree.cache_tree,
- fs_info->last_converted_bg_bytenr);
- if (!ce) {
- error("failed to find block group for bytenr %llu",
- fs_info->last_converted_bg_bytenr);
- ret = -ENOENT;
- goto error;
- }
- ce = prev_cache_extent(ce);
- if (!ce) {
- error("no more block groups before bytenr %llu",
- fs_info->last_converted_bg_bytenr);
- ret = -ENOENT;
- goto error;
- }
- }
+ ce = last_cache_extent(&fs_info->mapping_tree.cache_tree);
/* Now convert each block */
while (ce) {
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: btrfstune --convert-to-block-group-tree segfaulted. now filesystem is unmountable
2023-09-21 21:06 ` Qu Wenruo
@ 2023-09-22 9:32 ` Konstantinos Skarlatos
2023-09-22 21:46 ` Qu Wenruo
0 siblings, 1 reply; 8+ messages in thread
From: Konstantinos Skarlatos @ 2023-09-22 9:32 UTC (permalink / raw)
To: Qu Wenruo, linux-btrfs
Hello Qu,
thank you for your quick answer!
using your patch, i now get this:
❯ ./btrfstune --convert-to-block-group-tree /dev/sda
ERROR: Corrupted fs, no valid METADATA block group found
ERROR: failed to delete block group item from the old root: -117
ERROR: failed to convert the filesystem to block group tree feature
ERROR: btrfstune failed
extent buffer leak: start 17825576632320 len 16384
On 22/09/2023 12:06 π.μ., Qu Wenruo wrote:
>
>
> On 2023/9/21 22:57, Konstantinos Skarlatos wrote:
>> Hi all,
>> i tried to convert my BTRFS filesystem to block-group-tree but it
>> segfaulted and now the fs is not mountable.
>>
>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>> [1] 174047 segmentation fault (core dumped) btrfstune
>> --convert-to-block-group-tree /dev/sda
>>
>>
>> [2531715.190802] btrfstune[174047]: segfault at 1f ip 000055ec409fd198
>> sp 00007ffd0a772eb0 error 4 in btrfstune[55ec409d6000+6a000] likely on
>> CPU 3 (core 2, socket 0)
>> [2531715.190818] Code: 40 00 f3 0f 1e fa 41 56 41 55 49 89 fd 41 54 49
>> 89 f4 55 89 d5 53 48 8b 5f 68 49 89 ee 48 85 db 74 3f 48 8d 74 35 00 0f
>> 1f 00 <48> 8b 43 20 48 8b 4b 28 48 01 c1 49 39 cc 0f 83 8c 00 00 00
>> 48 39
>>
>> [174131]: Process 174047 (btrfstune) of user 0 dumped core.
>>
>> Stack trace of thread
>> 174047:
>> #0
>> 0x000055ec409fd198
>> alloc_extent_buffer (btrfstune + 0x34198)
>> #1
>> 0x000055ec409ee4f5
>> read_tree_block (btrfstune + 0x254f5)
>> #2
>> 0x000055ec409db5a6
>> read_node_slot (btrfstune + 0x125a6)
>> #3
>> 0x000055ec409e6e2d
>> n/a (btrfstune + 0x1de2d)
>> #4
>> 0x000055ec409e8a4d
>> n/a (btrfstune + 0x1fa4d)
>> #5
>> 0x000055ec409def01
>> btrfs_search_slot (btrfstune + 0x15f01)
>> #6
>> 0x000055ec409e9c79
>> btrfs_insert_empty_items (btrfstune + 0x20c79)
>> #7
>> 0x000055ec40a0090c
>> n/a (btrfstune + 0x3790c)
>> #8
>> 0x000055ec40a05185
>> n/a (btrfstune + 0x3c185)
>> #9
>> 0x000055ec40a05c75
>> add_to_free_space_tree (btrfstune + 0x3cc75)
>
> There seems to be something wrong with free space tree code here.
> Not sure which part is causing the problem, the fst or the conversion
> part.
>
>> #10
>> 0x000055ec40a3ec49
>> n/a (btrfstune + 0x75c49)
>> #11
>> 0x000055ec409fb52a
>> btrfs_run_delayed_refs (btrfstune + 0x3252a)
>> #12
>> 0x000055ec40a13091
>> btrfs_commit_transaction (btrfstune + 0x4a091)
>> #13
>> 0x000055ec409dcfdd
>> convert_to_bg_tree (btrfstune + 0x13fdd)
>> #14
>> 0x000055ec409d640a
>> main (btrfstune + 0xd40a)
>> #15
>> 0x00007f44ace27cd0
>> n/a (libc.so.6 + 0x27cd0)
>> #16
>> 0x00007f44ace27d8a
>> __libc_start_main (libc.so.6 + 0x27d8a)
>> #17
>> 0x000055ec409d7db5
>> _start (btrfstune + 0xedb5)
>> ELF object binary
>> architecture: AMD x86-64
>>
>>
>> ❯ btrfstune --convert-from-block-group-tree /dev/sda
>> ERROR: filesystem doesn't have block-group-tree feature
>>
>>
>> ❯ mount /dev/sda /storage/btrfs -o ro
>> mount: /storage/btrfs: wrong fs type, bad option, bad superblock on
>> /dev/sda, missing codepage or helper program, or other error.
>> dmesg(1) may have more information after failed mount system
>> call.
>>
>> Sep 19 17:18:23 elsinki kernel: BTRFS info (device sda): using crc32c
>> (crc32c-generic) checksum algorithm
>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): unrecognized
>> or unsupported super flag: 274877906944
>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): superblock
>> contains fatal errors
>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): open_ctree
>> failed
>>
>>
>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>> ERROR: failed to find block group for bytenr 20196285349888
>
> This is the correct way to resume the failed conversion.
>
> But by somehow the block group item seems to be missing from both old
> and new trees.
>
> Mind to test if the attached patch can help?
>
>
>
>> ERROR: failed to convert the filesystem to block group tree feature
>> extent buffer leak: start 17825576632320 len 16384
>>
>> ❯ btrfs filesystem show
>> Label: none uuid: 5a583d35-3eb2-410b-9044-1ac87a062247
>> Total devices 3 FS bytes used 9.53TiB
>> devid 1 size 3.64TiB used 3.64TiB path /dev/sda
>> devid 2 size 3.64TiB used 3.64TiB path /dev/sdc
>> devid 3 size 3.64TiB used 3.64TiB path /dev/sdd
>>
>> ❯ btrfs check --mode lowmem /dev/sda
>> Opening filesystem to check...
>> Checking filesystem on /dev/sda
>> UUID: 5a583d35-3eb2-410b-9044-1ac87a062247
>> [1/7] checking root items
>> [2/7] checking extents
>> ERROR: chunk [20197359091712 20198432833536) doesn't have related block
>> group item
> [...]> ERROR: chunk [20674088337408 20674096726016) doesn't have
> related block
>> group item
>
> This shows most of the block groups have been converted.
> Hope the patch can finish the conversion.
>
> Thanks,
> Qu
>>
>>
>> my system specs are:
>> AMD Phenom(tm) II X4 965 Processor @3400MHz
>> 8GB RAM
>>
>> ❯ uname -r
>> 6.4.9-arch1-1
>>
>>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: btrfstune --convert-to-block-group-tree segfaulted. now filesystem is unmountable
2023-09-22 9:32 ` Konstantinos Skarlatos
@ 2023-09-22 21:46 ` Qu Wenruo
2023-09-25 21:21 ` Qu Wenruo
0 siblings, 1 reply; 8+ messages in thread
From: Qu Wenruo @ 2023-09-22 21:46 UTC (permalink / raw)
To: Konstantinos Skarlatos, linux-btrfs
On 2023/9/22 19:02, Konstantinos Skarlatos wrote:
> Hello Qu,
> thank you for your quick answer!
> using your patch, i now get this:
>
> ❯ ./btrfstune --convert-to-block-group-tree /dev/sda
> ERROR: Corrupted fs, no valid METADATA block group found
Mind to dump the involved trees by:
# btrfs ins dump-tree -t extent /dev/sda
And
# btrfs ins dump-tree -t 11 /dev/sda
Considering the code converting a block group, there should never be a
missing block group (either in the old or the new tree).
I think there may be something wrong with the code reading both trees.
Thanks,
Qu
> ERROR: failed to delete block group item from the old root: -117
> ERROR: failed to convert the filesystem to block group tree feature
> ERROR: btrfstune failed
> extent buffer leak: start 17825576632320 len 16384
>
> On 22/09/2023 12:06 π.μ., Qu Wenruo wrote:
>>
>>
>> On 2023/9/21 22:57, Konstantinos Skarlatos wrote:
>>> Hi all,
>>> i tried to convert my BTRFS filesystem to block-group-tree but it
>>> segfaulted and now the fs is not mountable.
>>>
>>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>>> [1] 174047 segmentation fault (core dumped) btrfstune
>>> --convert-to-block-group-tree /dev/sda
>>>
>>>
>>> [2531715.190802] btrfstune[174047]: segfault at 1f ip 000055ec409fd198
>>> sp 00007ffd0a772eb0 error 4 in btrfstune[55ec409d6000+6a000] likely on
>>> CPU 3 (core 2, socket 0)
>>> [2531715.190818] Code: 40 00 f3 0f 1e fa 41 56 41 55 49 89 fd 41 54 49
>>> 89 f4 55 89 d5 53 48 8b 5f 68 49 89 ee 48 85 db 74 3f 48 8d 74 35 00 0f
>>> 1f 00 <48> 8b 43 20 48 8b 4b 28 48 01 c1 49 39 cc 0f 83 8c 00 00 00
>>> 48 39
>>>
>>> [174131]: Process 174047 (btrfstune) of user 0 dumped core.
>>>
>>> Stack trace of thread
>>> 174047:
>>> #0
>>> 0x000055ec409fd198
>>> alloc_extent_buffer (btrfstune + 0x34198)
>>> #1
>>> 0x000055ec409ee4f5
>>> read_tree_block (btrfstune + 0x254f5)
>>> #2
>>> 0x000055ec409db5a6
>>> read_node_slot (btrfstune + 0x125a6)
>>> #3
>>> 0x000055ec409e6e2d
>>> n/a (btrfstune + 0x1de2d)
>>> #4
>>> 0x000055ec409e8a4d
>>> n/a (btrfstune + 0x1fa4d)
>>> #5
>>> 0x000055ec409def01
>>> btrfs_search_slot (btrfstune + 0x15f01)
>>> #6
>>> 0x000055ec409e9c79
>>> btrfs_insert_empty_items (btrfstune + 0x20c79)
>>> #7
>>> 0x000055ec40a0090c
>>> n/a (btrfstune + 0x3790c)
>>> #8
>>> 0x000055ec40a05185
>>> n/a (btrfstune + 0x3c185)
>>> #9
>>> 0x000055ec40a05c75
>>> add_to_free_space_tree (btrfstune + 0x3cc75)
>>
>> There seems to be something wrong with free space tree code here.
>> Not sure which part is causing the problem, the fst or the conversion
>> part.
>>
>>> #10
>>> 0x000055ec40a3ec49
>>> n/a (btrfstune + 0x75c49)
>>> #11
>>> 0x000055ec409fb52a
>>> btrfs_run_delayed_refs (btrfstune + 0x3252a)
>>> #12
>>> 0x000055ec40a13091
>>> btrfs_commit_transaction (btrfstune + 0x4a091)
>>> #13
>>> 0x000055ec409dcfdd
>>> convert_to_bg_tree (btrfstune + 0x13fdd)
>>> #14
>>> 0x000055ec409d640a
>>> main (btrfstune + 0xd40a)
>>> #15
>>> 0x00007f44ace27cd0
>>> n/a (libc.so.6 + 0x27cd0)
>>> #16
>>> 0x00007f44ace27d8a
>>> __libc_start_main (libc.so.6 + 0x27d8a)
>>> #17
>>> 0x000055ec409d7db5
>>> _start (btrfstune + 0xedb5)
>>> ELF object binary
>>> architecture: AMD x86-64
>>>
>>>
>>> ❯ btrfstune --convert-from-block-group-tree /dev/sda
>>> ERROR: filesystem doesn't have block-group-tree feature
>>>
>>>
>>> ❯ mount /dev/sda /storage/btrfs -o ro
>>> mount: /storage/btrfs: wrong fs type, bad option, bad superblock on
>>> /dev/sda, missing codepage or helper program, or other error.
>>> dmesg(1) may have more information after failed mount system
>>> call.
>>>
>>> Sep 19 17:18:23 elsinki kernel: BTRFS info (device sda): using crc32c
>>> (crc32c-generic) checksum algorithm
>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): unrecognized
>>> or unsupported super flag: 274877906944
>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): superblock
>>> contains fatal errors
>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): open_ctree
>>> failed
>>>
>>>
>>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>>> ERROR: failed to find block group for bytenr 20196285349888
>>
>> This is the correct way to resume the failed conversion.
>>
>> But by somehow the block group item seems to be missing from both old
>> and new trees.
>>
>> Mind to test if the attached patch can help?
>>
>>
>>
>>> ERROR: failed to convert the filesystem to block group tree feature
>>> extent buffer leak: start 17825576632320 len 16384
>>>
>>> ❯ btrfs filesystem show
>>> Label: none uuid: 5a583d35-3eb2-410b-9044-1ac87a062247
>>> Total devices 3 FS bytes used 9.53TiB
>>> devid 1 size 3.64TiB used 3.64TiB path /dev/sda
>>> devid 2 size 3.64TiB used 3.64TiB path /dev/sdc
>>> devid 3 size 3.64TiB used 3.64TiB path /dev/sdd
>>>
>>> ❯ btrfs check --mode lowmem /dev/sda
>>> Opening filesystem to check...
>>> Checking filesystem on /dev/sda
>>> UUID: 5a583d35-3eb2-410b-9044-1ac87a062247
>>> [1/7] checking root items
>>> [2/7] checking extents
>>> ERROR: chunk [20197359091712 20198432833536) doesn't have related block
>>> group item
>> [...]> ERROR: chunk [20674088337408 20674096726016) doesn't have
>> related block
>>> group item
>>
>> This shows most of the block groups have been converted.
>> Hope the patch can finish the conversion.
>>
>> Thanks,
>> Qu
>>>
>>>
>>> my system specs are:
>>> AMD Phenom(tm) II X4 965 Processor @3400MHz
>>> 8GB RAM
>>>
>>> ❯ uname -r
>>> 6.4.9-arch1-1
>>>
>>>
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: btrfstune --convert-to-block-group-tree segfaulted. now filesystem is unmountable
2023-09-22 21:46 ` Qu Wenruo
@ 2023-09-25 21:21 ` Qu Wenruo
2023-09-27 14:35 ` Konstantinos Skarlatos
0 siblings, 1 reply; 8+ messages in thread
From: Qu Wenruo @ 2023-09-25 21:21 UTC (permalink / raw)
To: Konstantinos Skarlatos, linux-btrfs
On 2023/9/23 07:16, Qu Wenruo wrote:
>
>
> On 2023/9/22 19:02, Konstantinos Skarlatos wrote:
>> Hello Qu,
>> thank you for your quick answer!
>> using your patch, i now get this:
>>
>> ❯ ./btrfstune --convert-to-block-group-tree /dev/sda
>> ERROR: Corrupted fs, no valid METADATA block group found
>
> Mind to dump the involved trees by:
>
> # btrfs ins dump-tree -t extent /dev/sda
How stupid I'm... That tree can be super large.
Would you mind to dump it using the following command?
# btrfs ins dump-tree -t extent test.img |\
grep "item .* BLOCK_GROUP_ITEM "
This should greatly reduce the size while still get what I need.
Thanks,
Qu
>
> And
>
> # btrfs ins dump-tree -t 11 /dev/sda
>
>
> Considering the code converting a block group, there should never be a
> missing block group (either in the old or the new tree).
> I think there may be something wrong with the code reading both trees.
>
> Thanks,
> Qu
>> ERROR: failed to delete block group item from the old root: -117
>> ERROR: failed to convert the filesystem to block group tree feature
>> ERROR: btrfstune failed
>> extent buffer leak: start 17825576632320 len 16384
>>
>> On 22/09/2023 12:06 π.μ., Qu Wenruo wrote:
>>>
>>>
>>> On 2023/9/21 22:57, Konstantinos Skarlatos wrote:
>>>> Hi all,
>>>> i tried to convert my BTRFS filesystem to block-group-tree but it
>>>> segfaulted and now the fs is not mountable.
>>>>
>>>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>>>> [1] 174047 segmentation fault (core dumped) btrfstune
>>>> --convert-to-block-group-tree /dev/sda
>>>>
>>>>
>>>> [2531715.190802] btrfstune[174047]: segfault at 1f ip 000055ec409fd198
>>>> sp 00007ffd0a772eb0 error 4 in btrfstune[55ec409d6000+6a000] likely on
>>>> CPU 3 (core 2, socket 0)
>>>> [2531715.190818] Code: 40 00 f3 0f 1e fa 41 56 41 55 49 89 fd 41 54 49
>>>> 89 f4 55 89 d5 53 48 8b 5f 68 49 89 ee 48 85 db 74 3f 48 8d 74 35 00 0f
>>>> 1f 00 <48> 8b 43 20 48 8b 4b 28 48 01 c1 49 39 cc 0f 83 8c 00 00 00
>>>> 48 39
>>>>
>>>> [174131]: Process 174047 (btrfstune) of user 0 dumped core.
>>>>
>>>> Stack trace of
>>>> thread
>>>> 174047:
>>>> #0
>>>> 0x000055ec409fd198
>>>> alloc_extent_buffer (btrfstune + 0x34198)
>>>> #1
>>>> 0x000055ec409ee4f5
>>>> read_tree_block (btrfstune + 0x254f5)
>>>> #2
>>>> 0x000055ec409db5a6
>>>> read_node_slot (btrfstune + 0x125a6)
>>>> #3
>>>> 0x000055ec409e6e2d
>>>> n/a (btrfstune + 0x1de2d)
>>>> #4
>>>> 0x000055ec409e8a4d
>>>> n/a (btrfstune + 0x1fa4d)
>>>> #5
>>>> 0x000055ec409def01
>>>> btrfs_search_slot (btrfstune + 0x15f01)
>>>> #6
>>>> 0x000055ec409e9c79
>>>> btrfs_insert_empty_items (btrfstune + 0x20c79)
>>>> #7
>>>> 0x000055ec40a0090c
>>>> n/a (btrfstune + 0x3790c)
>>>> #8
>>>> 0x000055ec40a05185
>>>> n/a (btrfstune + 0x3c185)
>>>> #9
>>>> 0x000055ec40a05c75
>>>> add_to_free_space_tree (btrfstune + 0x3cc75)
>>>
>>> There seems to be something wrong with free space tree code here.
>>> Not sure which part is causing the problem, the fst or the conversion
>>> part.
>>>
>>>> #10
>>>> 0x000055ec40a3ec49
>>>> n/a (btrfstune + 0x75c49)
>>>> #11
>>>> 0x000055ec409fb52a
>>>> btrfs_run_delayed_refs (btrfstune + 0x3252a)
>>>> #12
>>>> 0x000055ec40a13091
>>>> btrfs_commit_transaction (btrfstune + 0x4a091)
>>>> #13
>>>> 0x000055ec409dcfdd
>>>> convert_to_bg_tree (btrfstune + 0x13fdd)
>>>> #14
>>>> 0x000055ec409d640a
>>>> main (btrfstune + 0xd40a)
>>>> #15
>>>> 0x00007f44ace27cd0
>>>> n/a (libc.so.6 + 0x27cd0)
>>>> #16
>>>> 0x00007f44ace27d8a
>>>> __libc_start_main (libc.so.6 + 0x27d8a)
>>>> #17
>>>> 0x000055ec409d7db5
>>>> _start (btrfstune + 0xedb5)
>>>> ELF object binary
>>>> architecture: AMD x86-64
>>>>
>>>>
>>>> ❯ btrfstune --convert-from-block-group-tree /dev/sda
>>>> ERROR: filesystem doesn't have block-group-tree feature
>>>>
>>>>
>>>> ❯ mount /dev/sda /storage/btrfs -o ro
>>>> mount: /storage/btrfs: wrong fs type, bad option, bad superblock on
>>>> /dev/sda, missing codepage or helper program, or other error.
>>>> dmesg(1) may have more information after failed mount system
>>>> call.
>>>>
>>>> Sep 19 17:18:23 elsinki kernel: BTRFS info (device sda): using crc32c
>>>> (crc32c-generic) checksum algorithm
>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): unrecognized
>>>> or unsupported super flag: 274877906944
>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): superblock
>>>> contains fatal errors
>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): open_ctree
>>>> failed
>>>>
>>>>
>>>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>>>> ERROR: failed to find block group for bytenr 20196285349888
>>>
>>> This is the correct way to resume the failed conversion.
>>>
>>> But by somehow the block group item seems to be missing from both old
>>> and new trees.
>>>
>>> Mind to test if the attached patch can help?
>>>
>>>
>>>
>>>> ERROR: failed to convert the filesystem to block group tree feature
>>>> extent buffer leak: start 17825576632320 len 16384
>>>>
>>>> ❯ btrfs filesystem show
>>>> Label: none uuid: 5a583d35-3eb2-410b-9044-1ac87a062247
>>>> Total devices 3 FS bytes used 9.53TiB
>>>> devid 1 size 3.64TiB used 3.64TiB path /dev/sda
>>>> devid 2 size 3.64TiB used 3.64TiB path /dev/sdc
>>>> devid 3 size 3.64TiB used 3.64TiB path /dev/sdd
>>>>
>>>> ❯ btrfs check --mode lowmem /dev/sda
>>>> Opening filesystem to check...
>>>> Checking filesystem on /dev/sda
>>>> UUID: 5a583d35-3eb2-410b-9044-1ac87a062247
>>>> [1/7] checking root items
>>>> [2/7] checking extents
>>>> ERROR: chunk [20197359091712 20198432833536) doesn't have related block
>>>> group item
>>> [...]> ERROR: chunk [20674088337408 20674096726016) doesn't have
>>> related block
>>>> group item
>>>
>>> This shows most of the block groups have been converted.
>>> Hope the patch can finish the conversion.
>>>
>>> Thanks,
>>> Qu
>>>>
>>>>
>>>> my system specs are:
>>>> AMD Phenom(tm) II X4 965 Processor @3400MHz
>>>> 8GB RAM
>>>>
>>>> ❯ uname -r
>>>> 6.4.9-arch1-1
>>>>
>>>>
>>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: btrfstune --convert-to-block-group-tree segfaulted. now filesystem is unmountable
2023-09-25 21:21 ` Qu Wenruo
@ 2023-09-27 14:35 ` Konstantinos Skarlatos
2023-09-27 20:44 ` Qu Wenruo
0 siblings, 1 reply; 8+ messages in thread
From: Konstantinos Skarlatos @ 2023-09-27 14:35 UTC (permalink / raw)
To: Qu Wenruo, linux-btrfs
[-- Attachment #1: Type: text/plain, Size: 8672 bytes --]
On 26/09/2023 12:21 πμ, Qu Wenruo wrote:
>
>
> On 2023/9/23 07:16, Qu Wenruo wrote:
>>
>>
>> On 2023/9/22 19:02, Konstantinos Skarlatos wrote:
>>> Hello Qu,
>>> thank you for your quick answer!
>>> using your patch, i now get this:
>>>
>>> ❯ ./btrfstune --convert-to-block-group-tree /dev/sda
>>> ERROR: Corrupted fs, no valid METADATA block group found
>>
>> Mind to dump the involved trees by:
>>
>> # btrfs ins dump-tree -t extent /dev/sda
>
> How stupid I'm... That tree can be super large.
>
> Would you mind to dump it using the following command?
>
> # btrfs ins dump-tree -t extent test.img |\
> grep "item .* BLOCK_GROUP_ITEM "
>
> This should greatly reduce the size while still get what I need.
>
> Thanks,
> Qu
Hi Qu,
Here are the two dumps - much smaller now :)
btrfs ins dump-tree -t 11 /dev/sda > dump2.txt
btrfs ins dump-tree -t extent /dev/sda | grep "item .* BLOCK_GROUP_ITEM
" > dump3.txt
Kind regards,
Konstantinos Skarlatos
>>
>> And
>>
>> # btrfs ins dump-tree -t 11 /dev/sda
>>
>>
>> Considering the code converting a block group, there should never be
>> a missing block group (either in the old or the new tree).
>> I think there may be something wrong with the code reading both trees.
>>
>> Thanks,
>> Qu
>>> ERROR: failed to delete block group item from the old root: -117
>>> ERROR: failed to convert the filesystem to block group tree feature
>>> ERROR: btrfstune failed
>>> extent buffer leak: start 17825576632320 len 16384
>>>
>>> On 22/09/2023 12:06 π.μ., Qu Wenruo wrote:
>>>>
>>>>
>>>> On 2023/9/21 22:57, Konstantinos Skarlatos wrote:
>>>>> Hi all,
>>>>> i tried to convert my BTRFS filesystem to block-group-tree but it
>>>>> segfaulted and now the fs is not mountable.
>>>>>
>>>>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>>>>> [1] 174047 segmentation fault (core dumped) btrfstune
>>>>> --convert-to-block-group-tree /dev/sda
>>>>>
>>>>>
>>>>> [2531715.190802] btrfstune[174047]: segfault at 1f ip
>>>>> 000055ec409fd198
>>>>> sp 00007ffd0a772eb0 error 4 in btrfstune[55ec409d6000+6a000]
>>>>> likely on
>>>>> CPU 3 (core 2, socket 0)
>>>>> [2531715.190818] Code: 40 00 f3 0f 1e fa 41 56 41 55 49 89 fd 41
>>>>> 54 49
>>>>> 89 f4 55 89 d5 53 48 8b 5f 68 49 89 ee 48 85 db 74 3f 48 8d 74 35
>>>>> 00 0f
>>>>> 1f 00 <48> 8b 43 20 48 8b 4b 28 48 01 c1 49 39 cc 0f 83 8c 00 00 00
>>>>> 48 39
>>>>>
>>>>> [174131]: Process 174047 (btrfstune) of user 0 dumped core.
>>>>>
>>>>> Stack trace of
>>>>> thread
>>>>> 174047:
>>>>> #0
>>>>> 0x000055ec409fd198
>>>>> alloc_extent_buffer (btrfstune + 0x34198)
>>>>> #1
>>>>> 0x000055ec409ee4f5
>>>>> read_tree_block (btrfstune + 0x254f5)
>>>>> #2
>>>>> 0x000055ec409db5a6
>>>>> read_node_slot (btrfstune + 0x125a6)
>>>>> #3
>>>>> 0x000055ec409e6e2d
>>>>> n/a (btrfstune + 0x1de2d)
>>>>> #4
>>>>> 0x000055ec409e8a4d
>>>>> n/a (btrfstune + 0x1fa4d)
>>>>> #5
>>>>> 0x000055ec409def01
>>>>> btrfs_search_slot (btrfstune + 0x15f01)
>>>>> #6
>>>>> 0x000055ec409e9c79
>>>>> btrfs_insert_empty_items (btrfstune + 0x20c79)
>>>>> #7
>>>>> 0x000055ec40a0090c
>>>>> n/a (btrfstune + 0x3790c)
>>>>> #8
>>>>> 0x000055ec40a05185
>>>>> n/a (btrfstune + 0x3c185)
>>>>> #9
>>>>> 0x000055ec40a05c75
>>>>> add_to_free_space_tree (btrfstune + 0x3cc75)
>>>>
>>>> There seems to be something wrong with free space tree code here.
>>>> Not sure which part is causing the problem, the fst or the conversion
>>>> part.
>>>>
>>>>> #10
>>>>> 0x000055ec40a3ec49
>>>>> n/a (btrfstune + 0x75c49)
>>>>> #11
>>>>> 0x000055ec409fb52a
>>>>> btrfs_run_delayed_refs (btrfstune + 0x3252a)
>>>>> #12
>>>>> 0x000055ec40a13091
>>>>> btrfs_commit_transaction (btrfstune + 0x4a091)
>>>>> #13
>>>>> 0x000055ec409dcfdd
>>>>> convert_to_bg_tree (btrfstune + 0x13fdd)
>>>>> #14
>>>>> 0x000055ec409d640a
>>>>> main (btrfstune + 0xd40a)
>>>>> #15
>>>>> 0x00007f44ace27cd0
>>>>> n/a (libc.so.6 + 0x27cd0)
>>>>> #16
>>>>> 0x00007f44ace27d8a
>>>>> __libc_start_main (libc.so.6 + 0x27d8a)
>>>>> #17
>>>>> 0x000055ec409d7db5
>>>>> _start (btrfstune + 0xedb5)
>>>>> ELF object binary
>>>>> architecture: AMD x86-64
>>>>>
>>>>>
>>>>> ❯ btrfstune --convert-from-block-group-tree /dev/sda
>>>>> ERROR: filesystem doesn't have block-group-tree feature
>>>>>
>>>>>
>>>>> ❯ mount /dev/sda /storage/btrfs -o ro
>>>>> mount: /storage/btrfs: wrong fs type, bad option, bad superblock on
>>>>> /dev/sda, missing codepage or helper program, or other error.
>>>>> dmesg(1) may have more information after failed mount system
>>>>> call.
>>>>>
>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS info (device sda): using crc32c
>>>>> (crc32c-generic) checksum algorithm
>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda):
>>>>> unrecognized
>>>>> or unsupported super flag: 274877906944
>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): superblock
>>>>> contains fatal errors
>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): open_ctree
>>>>> failed
>>>>>
>>>>>
>>>>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>>>>> ERROR: failed to find block group for bytenr 20196285349888
>>>>
>>>> This is the correct way to resume the failed conversion.
>>>>
>>>> But by somehow the block group item seems to be missing from both old
>>>> and new trees.
>>>>
>>>> Mind to test if the attached patch can help?
>>>>
>>>>
>>>>
>>>>> ERROR: failed to convert the filesystem to block group tree feature
>>>>> extent buffer leak: start 17825576632320 len 16384
>>>>>
>>>>> ❯ btrfs filesystem show
>>>>> Label: none uuid: 5a583d35-3eb2-410b-9044-1ac87a062247
>>>>> Total devices 3 FS bytes used 9.53TiB
>>>>> devid 1 size 3.64TiB used 3.64TiB path /dev/sda
>>>>> devid 2 size 3.64TiB used 3.64TiB path /dev/sdc
>>>>> devid 3 size 3.64TiB used 3.64TiB path /dev/sdd
>>>>>
>>>>> ❯ btrfs check --mode lowmem /dev/sda
>>>>> Opening filesystem to check...
>>>>> Checking filesystem on /dev/sda
>>>>> UUID: 5a583d35-3eb2-410b-9044-1ac87a062247
>>>>> [1/7] checking root items
>>>>> [2/7] checking extents
>>>>> ERROR: chunk [20197359091712 20198432833536) doesn't have related
>>>>> block
>>>>> group item
>>>> [...]> ERROR: chunk [20674088337408 20674096726016) doesn't have
>>>> related block
>>>>> group item
>>>>
>>>> This shows most of the block groups have been converted.
>>>> Hope the patch can finish the conversion.
>>>>
>>>> Thanks,
>>>> Qu
>>>>>
>>>>>
>>>>> my system specs are:
>>>>> AMD Phenom(tm) II X4 965 Processor @3400MHz
>>>>> 8GB RAM
>>>>>
>>>>> ❯ uname -r
>>>>> 6.4.9-arch1-1
>>>>>
>>>>>
>>>
[-- Attachment #2: dumps.zip --]
[-- Type: application/x-zip-compressed, Size: 128325 bytes --]
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: btrfstune --convert-to-block-group-tree segfaulted. now filesystem is unmountable
2023-09-27 14:35 ` Konstantinos Skarlatos
@ 2023-09-27 20:44 ` Qu Wenruo
2023-09-27 21:57 ` Konstantinos Skarlatos
0 siblings, 1 reply; 8+ messages in thread
From: Qu Wenruo @ 2023-09-27 20:44 UTC (permalink / raw)
To: Konstantinos Skarlatos, linux-btrfs
On 2023/9/28 00:05, Konstantinos Skarlatos wrote:
>
> On 26/09/2023 12:21 πμ, Qu Wenruo wrote:
>>
>>
>> On 2023/9/23 07:16, Qu Wenruo wrote:
>>>
>>>
>>> On 2023/9/22 19:02, Konstantinos Skarlatos wrote:
>>>> Hello Qu,
>>>> thank you for your quick answer!
>>>> using your patch, i now get this:
>>>>
>>>> ❯ ./btrfstune --convert-to-block-group-tree /dev/sda
>>>> ERROR: Corrupted fs, no valid METADATA block group found
>>>
>>> Mind to dump the involved trees by:
>>>
>>> # btrfs ins dump-tree -t extent /dev/sda
>>
>> How stupid I'm... That tree can be super large.
>>
>> Would you mind to dump it using the following command?
>>
>> # btrfs ins dump-tree -t extent test.img |\
>> grep "item .* BLOCK_GROUP_ITEM "
>>
>> This should greatly reduce the size while still get what I need.
>>
>> Thanks,
>> Qu
> Hi Qu,
> Here are the two dumps - much smaller now :)
>
> btrfs ins dump-tree -t 11 /dev/sda > dump2.txt
> btrfs ins dump-tree -t extent /dev/sda | grep "item .* BLOCK_GROUP_ITEM
> " > dump3.txt
Good news, the block groups items are still there for the old extent
tree. Only the data block group items (which have a larger bytenr) are
converted to block group tree.
And the conversion is indeed in bytenr order correctly.
I'll need to investigate the reason why open_ctree() doesn't read the
old block group items from the old tree.
Thanks,
Qu
>
> Kind regards,
> Konstantinos Skarlatos
>>>
>>> And
>>>
>>> # btrfs ins dump-tree -t 11 /dev/sda
>>>
>>>
>>> Considering the code converting a block group, there should never be
>>> a missing block group (either in the old or the new tree).
>>> I think there may be something wrong with the code reading both trees.
>>>
>>> Thanks,
>>> Qu
>>>> ERROR: failed to delete block group item from the old root: -117
>>>> ERROR: failed to convert the filesystem to block group tree feature
>>>> ERROR: btrfstune failed
>>>> extent buffer leak: start 17825576632320 len 16384
>>>>
>>>> On 22/09/2023 12:06 π.μ., Qu Wenruo wrote:
>>>>>
>>>>>
>>>>> On 2023/9/21 22:57, Konstantinos Skarlatos wrote:
>>>>>> Hi all,
>>>>>> i tried to convert my BTRFS filesystem to block-group-tree but it
>>>>>> segfaulted and now the fs is not mountable.
>>>>>>
>>>>>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>>>>>> [1] 174047 segmentation fault (core dumped) btrfstune
>>>>>> --convert-to-block-group-tree /dev/sda
>>>>>>
>>>>>>
>>>>>> [2531715.190802] btrfstune[174047]: segfault at 1f ip
>>>>>> 000055ec409fd198
>>>>>> sp 00007ffd0a772eb0 error 4 in btrfstune[55ec409d6000+6a000]
>>>>>> likely on
>>>>>> CPU 3 (core 2, socket 0)
>>>>>> [2531715.190818] Code: 40 00 f3 0f 1e fa 41 56 41 55 49 89 fd 41
>>>>>> 54 49
>>>>>> 89 f4 55 89 d5 53 48 8b 5f 68 49 89 ee 48 85 db 74 3f 48 8d 74 35
>>>>>> 00 0f
>>>>>> 1f 00 <48> 8b 43 20 48 8b 4b 28 48 01 c1 49 39 cc 0f 83 8c 00 00 00
>>>>>> 48 39
>>>>>>
>>>>>> [174131]: Process 174047 (btrfstune) of user 0 dumped core.
>>>>>>
>>>>>> Stack trace of
>>>>>> thread
>>>>>> 174047:
>>>>>> #0
>>>>>> 0x000055ec409fd198
>>>>>> alloc_extent_buffer (btrfstune + 0x34198)
>>>>>> #1
>>>>>> 0x000055ec409ee4f5
>>>>>> read_tree_block (btrfstune + 0x254f5)
>>>>>> #2
>>>>>> 0x000055ec409db5a6
>>>>>> read_node_slot (btrfstune + 0x125a6)
>>>>>> #3
>>>>>> 0x000055ec409e6e2d
>>>>>> n/a (btrfstune + 0x1de2d)
>>>>>> #4
>>>>>> 0x000055ec409e8a4d
>>>>>> n/a (btrfstune + 0x1fa4d)
>>>>>> #5
>>>>>> 0x000055ec409def01
>>>>>> btrfs_search_slot (btrfstune + 0x15f01)
>>>>>> #6
>>>>>> 0x000055ec409e9c79
>>>>>> btrfs_insert_empty_items (btrfstune + 0x20c79)
>>>>>> #7
>>>>>> 0x000055ec40a0090c
>>>>>> n/a (btrfstune + 0x3790c)
>>>>>> #8
>>>>>> 0x000055ec40a05185
>>>>>> n/a (btrfstune + 0x3c185)
>>>>>> #9
>>>>>> 0x000055ec40a05c75
>>>>>> add_to_free_space_tree (btrfstune + 0x3cc75)
>>>>>
>>>>> There seems to be something wrong with free space tree code here.
>>>>> Not sure which part is causing the problem, the fst or the conversion
>>>>> part.
>>>>>
>>>>>> #10
>>>>>> 0x000055ec40a3ec49
>>>>>> n/a (btrfstune + 0x75c49)
>>>>>> #11
>>>>>> 0x000055ec409fb52a
>>>>>> btrfs_run_delayed_refs (btrfstune + 0x3252a)
>>>>>> #12
>>>>>> 0x000055ec40a13091
>>>>>> btrfs_commit_transaction (btrfstune + 0x4a091)
>>>>>> #13
>>>>>> 0x000055ec409dcfdd
>>>>>> convert_to_bg_tree (btrfstune + 0x13fdd)
>>>>>> #14
>>>>>> 0x000055ec409d640a
>>>>>> main (btrfstune + 0xd40a)
>>>>>> #15
>>>>>> 0x00007f44ace27cd0
>>>>>> n/a (libc.so.6 + 0x27cd0)
>>>>>> #16
>>>>>> 0x00007f44ace27d8a
>>>>>> __libc_start_main (libc.so.6 + 0x27d8a)
>>>>>> #17
>>>>>> 0x000055ec409d7db5
>>>>>> _start (btrfstune + 0xedb5)
>>>>>> ELF object binary
>>>>>> architecture: AMD x86-64
>>>>>>
>>>>>>
>>>>>> ❯ btrfstune --convert-from-block-group-tree /dev/sda
>>>>>> ERROR: filesystem doesn't have block-group-tree feature
>>>>>>
>>>>>>
>>>>>> ❯ mount /dev/sda /storage/btrfs -o ro
>>>>>> mount: /storage/btrfs: wrong fs type, bad option, bad superblock on
>>>>>> /dev/sda, missing codepage or helper program, or other error.
>>>>>> dmesg(1) may have more information after failed mount system
>>>>>> call.
>>>>>>
>>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS info (device sda): using crc32c
>>>>>> (crc32c-generic) checksum algorithm
>>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda):
>>>>>> unrecognized
>>>>>> or unsupported super flag: 274877906944
>>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): superblock
>>>>>> contains fatal errors
>>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda): open_ctree
>>>>>> failed
>>>>>>
>>>>>>
>>>>>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>>>>>> ERROR: failed to find block group for bytenr 20196285349888
>>>>>
>>>>> This is the correct way to resume the failed conversion.
>>>>>
>>>>> But by somehow the block group item seems to be missing from both old
>>>>> and new trees.
>>>>>
>>>>> Mind to test if the attached patch can help?
>>>>>
>>>>>
>>>>>
>>>>>> ERROR: failed to convert the filesystem to block group tree feature
>>>>>> extent buffer leak: start 17825576632320 len 16384
>>>>>>
>>>>>> ❯ btrfs filesystem show
>>>>>> Label: none uuid: 5a583d35-3eb2-410b-9044-1ac87a062247
>>>>>> Total devices 3 FS bytes used 9.53TiB
>>>>>> devid 1 size 3.64TiB used 3.64TiB path /dev/sda
>>>>>> devid 2 size 3.64TiB used 3.64TiB path /dev/sdc
>>>>>> devid 3 size 3.64TiB used 3.64TiB path /dev/sdd
>>>>>>
>>>>>> ❯ btrfs check --mode lowmem /dev/sda
>>>>>> Opening filesystem to check...
>>>>>> Checking filesystem on /dev/sda
>>>>>> UUID: 5a583d35-3eb2-410b-9044-1ac87a062247
>>>>>> [1/7] checking root items
>>>>>> [2/7] checking extents
>>>>>> ERROR: chunk [20197359091712 20198432833536) doesn't have related
>>>>>> block
>>>>>> group item
>>>>> [...]> ERROR: chunk [20674088337408 20674096726016) doesn't have
>>>>> related block
>>>>>> group item
>>>>>
>>>>> This shows most of the block groups have been converted.
>>>>> Hope the patch can finish the conversion.
>>>>>
>>>>> Thanks,
>>>>> Qu
>>>>>>
>>>>>>
>>>>>> my system specs are:
>>>>>> AMD Phenom(tm) II X4 965 Processor @3400MHz
>>>>>> 8GB RAM
>>>>>>
>>>>>> ❯ uname -r
>>>>>> 6.4.9-arch1-1
>>>>>>
>>>>>>
>>>>
>
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: btrfstune --convert-to-block-group-tree segfaulted. now filesystem is unmountable
2023-09-27 20:44 ` Qu Wenruo
@ 2023-09-27 21:57 ` Konstantinos Skarlatos
0 siblings, 0 replies; 8+ messages in thread
From: Konstantinos Skarlatos @ 2023-09-27 21:57 UTC (permalink / raw)
To: Qu Wenruo, linux-btrfs
On 27/9/2023 11:44 μ.μ., Qu Wenruo wrote:
>
>
> On 2023/9/28 00:05, Konstantinos Skarlatos wrote:
>>
>> On 26/09/2023 12:21 πμ, Qu Wenruo wrote:
>>>
>>>
>>> On 2023/9/23 07:16, Qu Wenruo wrote:
>>>>
>>>>
>>>> On 2023/9/22 19:02, Konstantinos Skarlatos wrote:
>>>>> Hello Qu,
>>>>> thank you for your quick answer!
>>>>> using your patch, i now get this:
>>>>>
>>>>> ❯ ./btrfstune --convert-to-block-group-tree /dev/sda
>>>>> ERROR: Corrupted fs, no valid METADATA block group found
>>>>
>>>> Mind to dump the involved trees by:
>>>>
>>>> # btrfs ins dump-tree -t extent /dev/sda
>>>
>>> How stupid I'm... That tree can be super large.
>>>
>>> Would you mind to dump it using the following command?
>>>
>>> # btrfs ins dump-tree -t extent test.img |\
>>> grep "item .* BLOCK_GROUP_ITEM "
>>>
>>> This should greatly reduce the size while still get what I need.
>>>
>>> Thanks,
>>> Qu
>> Hi Qu,
>> Here are the two dumps - much smaller now :)
>>
>> btrfs ins dump-tree -t 11 /dev/sda > dump2.txt
>> btrfs ins dump-tree -t extent /dev/sda | grep "item .* BLOCK_GROUP_ITEM
>> " > dump3.txt
>
> Good news, the block groups items are still there for the old extent
> tree. Only the data block group items (which have a larger bytenr) are
> converted to block group tree.
> And the conversion is indeed in bytenr order correctly.
>
> I'll need to investigate the reason why open_ctree() doesn't read the
> old block group items from the old tree.
Thanks Qu for the good news!
kind regards,
>
> Thanks,
> Qu
>>
>> Kind regards,
>> Konstantinos Skarlatos
>>>>
>>>> And
>>>>
>>>> # btrfs ins dump-tree -t 11 /dev/sda
>>>>
>>>>
>>>> Considering the code converting a block group, there should never be
>>>> a missing block group (either in the old or the new tree).
>>>> I think there may be something wrong with the code reading both trees.
>>>>
>>>> Thanks,
>>>> Qu
>>>>> ERROR: failed to delete block group item from the old root: -117
>>>>> ERROR: failed to convert the filesystem to block group tree feature
>>>>> ERROR: btrfstune failed
>>>>> extent buffer leak: start 17825576632320 len 16384
>>>>>
>>>>> On 22/09/2023 12:06 π.μ., Qu Wenruo wrote:
>>>>>>
>>>>>>
>>>>>> On 2023/9/21 22:57, Konstantinos Skarlatos wrote:
>>>>>>> Hi all,
>>>>>>> i tried to convert my BTRFS filesystem to block-group-tree but it
>>>>>>> segfaulted and now the fs is not mountable.
>>>>>>>
>>>>>>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>>>>>>> [1] 174047 segmentation fault (core dumped) btrfstune
>>>>>>> --convert-to-block-group-tree /dev/sda
>>>>>>>
>>>>>>>
>>>>>>> [2531715.190802] btrfstune[174047]: segfault at 1f ip
>>>>>>> 000055ec409fd198
>>>>>>> sp 00007ffd0a772eb0 error 4 in btrfstune[55ec409d6000+6a000]
>>>>>>> likely on
>>>>>>> CPU 3 (core 2, socket 0)
>>>>>>> [2531715.190818] Code: 40 00 f3 0f 1e fa 41 56 41 55 49 89 fd 41
>>>>>>> 54 49
>>>>>>> 89 f4 55 89 d5 53 48 8b 5f 68 49 89 ee 48 85 db 74 3f 48 8d 74 35
>>>>>>> 00 0f
>>>>>>> 1f 00 <48> 8b 43 20 48 8b 4b 28 48 01 c1 49 39 cc 0f 83 8c 00 00 00
>>>>>>> 48 39
>>>>>>>
>>>>>>> [174131]: Process 174047 (btrfstune) of user 0 dumped core.
>>>>>>>
>>>>>>> Stack trace of
>>>>>>> thread
>>>>>>> 174047:
>>>>>>> #0
>>>>>>> 0x000055ec409fd198
>>>>>>> alloc_extent_buffer (btrfstune + 0x34198)
>>>>>>> #1
>>>>>>> 0x000055ec409ee4f5
>>>>>>> read_tree_block (btrfstune + 0x254f5)
>>>>>>> #2
>>>>>>> 0x000055ec409db5a6
>>>>>>> read_node_slot (btrfstune + 0x125a6)
>>>>>>> #3
>>>>>>> 0x000055ec409e6e2d
>>>>>>> n/a (btrfstune + 0x1de2d)
>>>>>>> #4
>>>>>>> 0x000055ec409e8a4d
>>>>>>> n/a (btrfstune + 0x1fa4d)
>>>>>>> #5
>>>>>>> 0x000055ec409def01
>>>>>>> btrfs_search_slot (btrfstune + 0x15f01)
>>>>>>> #6
>>>>>>> 0x000055ec409e9c79
>>>>>>> btrfs_insert_empty_items (btrfstune + 0x20c79)
>>>>>>> #7
>>>>>>> 0x000055ec40a0090c
>>>>>>> n/a (btrfstune + 0x3790c)
>>>>>>> #8
>>>>>>> 0x000055ec40a05185
>>>>>>> n/a (btrfstune + 0x3c185)
>>>>>>> #9
>>>>>>> 0x000055ec40a05c75
>>>>>>> add_to_free_space_tree (btrfstune + 0x3cc75)
>>>>>>
>>>>>> There seems to be something wrong with free space tree code here.
>>>>>> Not sure which part is causing the problem, the fst or the
>>>>>> conversion
>>>>>> part.
>>>>>>
>>>>>>> #10
>>>>>>> 0x000055ec40a3ec49
>>>>>>> n/a (btrfstune + 0x75c49)
>>>>>>> #11
>>>>>>> 0x000055ec409fb52a
>>>>>>> btrfs_run_delayed_refs (btrfstune + 0x3252a)
>>>>>>> #12
>>>>>>> 0x000055ec40a13091
>>>>>>> btrfs_commit_transaction (btrfstune + 0x4a091)
>>>>>>> #13
>>>>>>> 0x000055ec409dcfdd
>>>>>>> convert_to_bg_tree (btrfstune + 0x13fdd)
>>>>>>> #14
>>>>>>> 0x000055ec409d640a
>>>>>>> main (btrfstune + 0xd40a)
>>>>>>> #15
>>>>>>> 0x00007f44ace27cd0
>>>>>>> n/a (libc.so.6 + 0x27cd0)
>>>>>>> #16
>>>>>>> 0x00007f44ace27d8a
>>>>>>> __libc_start_main (libc.so.6 + 0x27d8a)
>>>>>>> #17
>>>>>>> 0x000055ec409d7db5
>>>>>>> _start (btrfstune + 0xedb5)
>>>>>>> ELF object binary
>>>>>>> architecture: AMD x86-64
>>>>>>>
>>>>>>>
>>>>>>> ❯ btrfstune --convert-from-block-group-tree /dev/sda
>>>>>>> ERROR: filesystem doesn't have block-group-tree feature
>>>>>>>
>>>>>>>
>>>>>>> ❯ mount /dev/sda /storage/btrfs -o ro
>>>>>>> mount: /storage/btrfs: wrong fs type, bad option, bad superblock on
>>>>>>> /dev/sda, missing codepage or helper program, or other error.
>>>>>>> dmesg(1) may have more information after failed mount
>>>>>>> system
>>>>>>> call.
>>>>>>>
>>>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS info (device sda): using
>>>>>>> crc32c
>>>>>>> (crc32c-generic) checksum algorithm
>>>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda):
>>>>>>> unrecognized
>>>>>>> or unsupported super flag: 274877906944
>>>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda):
>>>>>>> superblock
>>>>>>> contains fatal errors
>>>>>>> Sep 19 17:18:23 elsinki kernel: BTRFS error (device sda):
>>>>>>> open_ctree
>>>>>>> failed
>>>>>>>
>>>>>>>
>>>>>>> ❯ btrfstune --convert-to-block-group-tree /dev/sda
>>>>>>> ERROR: failed to find block group for bytenr 20196285349888
>>>>>>
>>>>>> This is the correct way to resume the failed conversion.
>>>>>>
>>>>>> But by somehow the block group item seems to be missing from both
>>>>>> old
>>>>>> and new trees.
>>>>>>
>>>>>> Mind to test if the attached patch can help?
>>>>>>
>>>>>>
>>>>>>
>>>>>>> ERROR: failed to convert the filesystem to block group tree feature
>>>>>>> extent buffer leak: start 17825576632320 len 16384
>>>>>>>
>>>>>>> ❯ btrfs filesystem show
>>>>>>> Label: none uuid: 5a583d35-3eb2-410b-9044-1ac87a062247
>>>>>>> Total devices 3 FS bytes used 9.53TiB
>>>>>>> devid 1 size 3.64TiB used 3.64TiB path /dev/sda
>>>>>>> devid 2 size 3.64TiB used 3.64TiB path /dev/sdc
>>>>>>> devid 3 size 3.64TiB used 3.64TiB path /dev/sdd
>>>>>>>
>>>>>>> ❯ btrfs check --mode lowmem /dev/sda
>>>>>>> Opening filesystem to check...
>>>>>>> Checking filesystem on /dev/sda
>>>>>>> UUID: 5a583d35-3eb2-410b-9044-1ac87a062247
>>>>>>> [1/7] checking root items
>>>>>>> [2/7] checking extents
>>>>>>> ERROR: chunk [20197359091712 20198432833536) doesn't have related
>>>>>>> block
>>>>>>> group item
>>>>>> [...]> ERROR: chunk [20674088337408 20674096726016) doesn't have
>>>>>> related block
>>>>>>> group item
>>>>>>
>>>>>> This shows most of the block groups have been converted.
>>>>>> Hope the patch can finish the conversion.
>>>>>>
>>>>>> Thanks,
>>>>>> Qu
>>>>>>>
>>>>>>>
>>>>>>> my system specs are:
>>>>>>> AMD Phenom(tm) II X4 965 Processor @3400MHz
>>>>>>> 8GB RAM
>>>>>>>
>>>>>>> ❯ uname -r
>>>>>>> 6.4.9-arch1-1
>>>>>>>
>>>>>>>
>>>>>
>>
>>
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2023-09-27 21:57 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-09-21 13:27 btrfstune --convert-to-block-group-tree segfaulted. now filesystem is unmountable Konstantinos Skarlatos
2023-09-21 21:06 ` Qu Wenruo
2023-09-22 9:32 ` Konstantinos Skarlatos
2023-09-22 21:46 ` Qu Wenruo
2023-09-25 21:21 ` Qu Wenruo
2023-09-27 14:35 ` Konstantinos Skarlatos
2023-09-27 20:44 ` Qu Wenruo
2023-09-27 21:57 ` Konstantinos Skarlatos
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).