This issues is originally posted to ASK.fedoraproject.org https://ask.fedoraproject.org/t/btrfs-scrub-find-one-error-then-aborted-cannot-resumed/14295?u=sampsonf Summary: 1. After seeing some btrfs corruption in journal, I manually start a scrub by running sudo btrfs scrub start /var/vols/8T-5 Result: After about 1/3 data is scrub, process is aborted, with check sum error and transid errors find. scrub will keep aborting immediately after "btrfs scrub resume" 2. With the help of Chris Murphy, it is identified the check sum error is in a QCOW2 file. After mounting with "ro,rescue=all", the QCOW2 file can be copied and qemu-img check reports no error. After removed the QCOW2 file, scrub can finish, with there are extra check sum errors at the same logical block and the transid error still there. Question: A full backup of the btrfs volume is underway. Apart from reformat and restore, what can be done to make the existing btrfs volume return to a healthy state? smartctl -i /dev/sdb | grep 'Device Model\|Firmware' Device Model: TOSHIBA MG05ACA800E Firmware Version: GX4K btrfs check --readonly /dev/sdc2 Opening filesystem to check... Checking filesystem on /dev/sdc2 UUID: 6a32b7e3-0ad3-4316-942d-ec568e1e86f8 [1/7] checking root items [2/7] checking extents parent transid verify failed on 8477840605184 wanted 255798 found 255532 parent transid verify failed on 8477840605184 wanted 255798 found 255532 parent transid verify failed on 8477840605184 wanted 255798 found 255532 Ignoring transid failure bad block 8477840605184 ERROR: errors found in extent allocation tree or chunk allocation [3/7] checking free space cache [4/7] checking fs roots [5/7] checking only csums items (without verifying data) parent transid verify failed on 8477840605184 wanted 255798 found 255532 Ignoring transid failure ERROR: child eb corrupted: parent bytenr=8477897146368 item=218 parent level=1 child bytenr=8477840605184 child level=1 Error going to next leaf -5 [6/7] checking root refs [7/7] checking quota groups skipped (not enabled on this FS) ERROR: transid errors in file system found 6317718130688 bytes used, error(s) found total csum bytes: 5833278272 total tree bytes: 7172947968 total fs tree bytes: 3670016 total extent tree bytes: 393412608 btree space waste bytes: 919951283 file data blocks allocated: 74452951040 referenced 69352108032 btrfs insp dump-t -b 8477840605184 --hide-names /dev/sdc2 btrfs-progs v5.12.1 node 8477840605184 level 1 items 245 free space 248 generation 255532 owner CSUM_TREE node 8477840605184 flags 0x1(WRITTEN) backref revision 1 fs uuid 6a32b7e3-0ad3-4316-942d-ec568e1e86f8 chunk uuid 8d8bd209-fa88-4302-ac28-a57c1b325f42 key (EXTENT_CSUM EXTENT_CSUM 4910987608064) block 2095462367232 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4910988488704) block 2095462416384 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911005106176) block 2095462481920 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911021723648) block 2095462547456 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911037898752) block 2095462563840 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911048200192) block 2095462678528 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911064821760) block 2095462727680 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911064985600) block 2095462760448 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911081603072) block 2095462875136 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911098220544) block 2095462924288 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911114838016) block 2095463022592 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911131455488) block 2095463038976 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911143026688) block 2095463268352 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911159644160) block 2095463350272 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911176261632) block 2095463399424 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911192883200) block 2095463563264 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911199666176) block 2095463579648 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911214714880) block 2095463743488 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911227543552) block 2095463759872 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911244161024) block 2095463776256 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911260778496) block 2095463825408 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911277395968) block 2095464005632 gen 188363 key (EXTENT_CSUM EXTENT_CSUM 4911292563456) block 8478135468032 gen 215033 key (EXTENT_CSUM EXTENT_CSUM 4911309180928) block 8478117560320 gen 254923 key (EXTENT_CSUM EXTENT_CSUM 4911328657408) block 6450678431744 gen 255196 key (EXTENT_CSUM EXTENT_CSUM 4911333212160) block 8478454317056 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4911340621824) block 8477848289280 gen 255339 key (EXTENT_CSUM EXTENT_CSUM 4911344996352) block 8477773086720 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4911351791616) block 8477841784832 gen 255532 key (EXTENT_CSUM EXTENT_CSUM 4911354847232) block 8477859430400 gen 255532 key (EXTENT_CSUM EXTENT_CSUM 4911359250432) block 8477901832192 gen 255532 key (EXTENT_CSUM EXTENT_CSUM 4911364321280) block 8477901996032 gen 255532 key (EXTENT_CSUM EXTENT_CSUM 4911366905856) block 8477561896960 gen 255498 key (EXTENT_CSUM EXTENT_CSUM 4911374159872) block 8478435409920 gen 254966 key (EXTENT_CSUM EXTENT_CSUM 4911379673088) block 6450688770048 gen 255457 key (EXTENT_CSUM EXTENT_CSUM 4911384678400) block 8478435950592 gen 254966 key (EXTENT_CSUM EXTENT_CSUM 4911391444992) block 8477718446080 gen 255335 key (EXTENT_CSUM EXTENT_CSUM 4911397834752) block 6452110753792 gen 255472 key (EXTENT_CSUM EXTENT_CSUM 4911405080576) block 2095485042688 gen 255431 key (EXTENT_CSUM EXTENT_CSUM 4911410008064) block 8477701062656 gen 255506 key (EXTENT_CSUM EXTENT_CSUM 4911416238080) block 8477803364352 gen 255524 key (EXTENT_CSUM EXTENT_CSUM 4911424786432) block 8477701111808 gen 255506 key (EXTENT_CSUM EXTENT_CSUM 4911432511488) block 8477879271424 gen 255532 key (EXTENT_CSUM EXTENT_CSUM 4911438635008) block 8477763993600 gen 255339 key (EXTENT_CSUM EXTENT_CSUM 4911443587072) block 8477801889792 gen 255515 key (EXTENT_CSUM EXTENT_CSUM 4911450861568) block 8477618438144 gen 255296 key (EXTENT_CSUM EXTENT_CSUM 4911459819520) block 8477484105728 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4911468179456) block 8477699997696 gen 255515 key (EXTENT_CSUM EXTENT_CSUM 4911474753536) block 8477896949760 gen 255532 key (EXTENT_CSUM EXTENT_CSUM 4911481630720) block 8478070276096 gen 255516 key (EXTENT_CSUM EXTENT_CSUM 4911493132288) block 8477562339328 gen 255498 key (EXTENT_CSUM EXTENT_CSUM 4911502270464) block 2095487516672 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4911510507520) block 8477902143488 gen 255532 key (EXTENT_CSUM EXTENT_CSUM 4911518830592) block 2095481126912 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4911530209280) block 2095487631360 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4911543361536) block 8477619011584 gen 255296 key (EXTENT_CSUM EXTENT_CSUM 4911553613824) block 6450689130496 gen 255256 key (EXTENT_CSUM EXTENT_CSUM 4911562694656) block 8477786603520 gen 255338 key (EXTENT_CSUM EXTENT_CSUM 4911575584768) block 8477607313408 gen 255498 key (EXTENT_CSUM EXTENT_CSUM 4911587049472) block 2095723347968 gen 255433 key (EXTENT_CSUM EXTENT_CSUM 4911602769920) block 8478107811840 gen 237988 key (EXTENT_CSUM EXTENT_CSUM 4911617314816) block 2095312977920 gen 214274 key (EXTENT_CSUM EXTENT_CSUM 4911633747968) block 8477859282944 gen 253191 key (EXTENT_CSUM EXTENT_CSUM 4911648309248) block 8477953359872 gen 213569 key (EXTENT_CSUM EXTENT_CSUM 4911664930816) block 8478088052736 gen 211124 key (EXTENT_CSUM EXTENT_CSUM 4911681552384) block 8478088069120 gen 211124 key (EXTENT_CSUM EXTENT_CSUM 4911698173952) block 8478088085504 gen 211124 key (EXTENT_CSUM EXTENT_CSUM 4911714795520) block 6450689163264 gen 255256 key (EXTENT_CSUM EXTENT_CSUM 4911728156672) block 8477522378752 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4911736844288) block 8477701341184 gen 255506 key (EXTENT_CSUM EXTENT_CSUM 4911748939776) block 8477701373952 gen 255506 key (EXTENT_CSUM EXTENT_CSUM 4911760543744) block 2896207118336 gen 255194 key (EXTENT_CSUM EXTENT_CSUM 4911775547392) block 2095250456576 gen 254827 key (EXTENT_CSUM EXTENT_CSUM 4911791718400) block 8478089609216 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4911806226432) block 8477701390336 gen 255506 key (EXTENT_CSUM EXTENT_CSUM 4911810736128) block 2095572369408 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4911818137600) block 6450563284992 gen 255257 key (EXTENT_CSUM EXTENT_CSUM 4911831973888) block 6450713198592 gen 255278 key (EXTENT_CSUM EXTENT_CSUM 4911846227968) block 8477701832704 gen 228558 key (EXTENT_CSUM EXTENT_CSUM 4911862849536) block 6450678562816 gen 251344 key (EXTENT_CSUM EXTENT_CSUM 4911878438912) block 8477939040256 gen 255361 key (EXTENT_CSUM EXTENT_CSUM 4911885381632) block 6450696372224 gen 255472 key (EXTENT_CSUM EXTENT_CSUM 4911892893696) block 8477773053952 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4911897636864) block 8477619027968 gen 255505 key (EXTENT_CSUM EXTENT_CSUM 4911907803136) block 8478331551744 gen 255381 key (EXTENT_CSUM EXTENT_CSUM 4911915851776) block 2095487746048 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4911928381440) block 2095485534208 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4911939751936) block 6450691227648 gen 255256 key (EXTENT_CSUM EXTENT_CSUM 4911949889536) block 8477550346240 gen 255497 key (EXTENT_CSUM EXTENT_CSUM 4911960281088) block 2095244673024 gen 255250 key (EXTENT_CSUM EXTENT_CSUM 4911968550912) block 8478374330368 gen 255169 key (EXTENT_CSUM EXTENT_CSUM 4911976820736) block 6450563022848 gen 255258 key (EXTENT_CSUM EXTENT_CSUM 4911986008064) block 2095667888128 gen 255250 key (EXTENT_CSUM EXTENT_CSUM 4911994003456) block 6450721079296 gen 255281 key (EXTENT_CSUM EXTENT_CSUM 4911999787008) block 8478046109696 gen 255365 key (EXTENT_CSUM EXTENT_CSUM 4912009973760) block 8477873487872 gen 255339 key (EXTENT_CSUM EXTENT_CSUM 4912016211968) block 8477532733440 gen 255218 key (EXTENT_CSUM EXTENT_CSUM 4912029597696) block 8478335778816 gen 212412 key (EXTENT_CSUM EXTENT_CSUM 4912046219264) block 7714681274368 gen 211366 key (EXTENT_CSUM EXTENT_CSUM 4912059023360) block 7714680864768 gen 211366 key (EXTENT_CSUM EXTENT_CSUM 4912075644928) block 8477652254720 gen 211367 key (EXTENT_CSUM EXTENT_CSUM 4912092266496) block 8477652271104 gen 211367 key (EXTENT_CSUM EXTENT_CSUM 4912108888064) block 8477652303872 gen 211367 key (EXTENT_CSUM EXTENT_CSUM 4912125509632) block 8477652336640 gen 211367 key (EXTENT_CSUM EXTENT_CSUM 4912142131200) block 8477849419776 gen 211374 key (EXTENT_CSUM EXTENT_CSUM 4912158752768) block 8477849436160 gen 211374 key (EXTENT_CSUM EXTENT_CSUM 4912175349760) block 8477523558400 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4912187535360) block 8477497917440 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4912194662400) block 6450695290880 gen 255470 key (EXTENT_CSUM EXTENT_CSUM 4912201371648) block 8478114512896 gen 255374 key (EXTENT_CSUM EXTENT_CSUM 4912217075712) block 8478446649344 gen 254966 key (EXTENT_CSUM EXTENT_CSUM 4912229380096) block 8478070603776 gen 254922 key (EXTENT_CSUM EXTENT_CSUM 4912245252096) block 8478299865088 gen 255168 key (EXTENT_CSUM EXTENT_CSUM 4912259923968) block 2896123740160 gen 246335 key (EXTENT_CSUM EXTENT_CSUM 4912268677120) block 8478299013120 gen 255243 key (EXTENT_CSUM EXTENT_CSUM 4912281976832) block 8477963911168 gen 255363 key (EXTENT_CSUM EXTENT_CSUM 4913475031040) block 8477498097664 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4913481289728) block 6450575785984 gen 255457 key (EXTENT_CSUM EXTENT_CSUM 4913487241216) block 8477939056640 gen 255361 key (EXTENT_CSUM EXTENT_CSUM 4913498177536) block 8477786865664 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4913511317504) block 8477786750976 gen 255338 key (EXTENT_CSUM EXTENT_CSUM 4913522954240) block 8477605265408 gen 255494 key (EXTENT_CSUM EXTENT_CSUM 4913528889344) block 2095627419648 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4913541951488) block 6450697551872 gen 255272 key (EXTENT_CSUM EXTENT_CSUM 4913553911808) block 8477768794112 gen 255327 key (EXTENT_CSUM EXTENT_CSUM 4913568161792) block 6450691522560 gen 255256 key (EXTENT_CSUM EXTENT_CSUM 4913581428736) block 8477575086080 gen 255291 key (EXTENT_CSUM EXTENT_CSUM 4913589563392) block 8478185816064 gen 255149 key (EXTENT_CSUM EXTENT_CSUM 4913601384448) block 6450716065792 gen 246502 key (EXTENT_CSUM EXTENT_CSUM 4913605787648) block 8478096195584 gen 255366 key (EXTENT_CSUM EXTENT_CSUM 4913618006016) block 8477898932224 gen 211885 key (EXTENT_CSUM EXTENT_CSUM 4913622409216) block 6450704809984 gen 228533 key (EXTENT_CSUM EXTENT_CSUM 4913639030784) block 8477952966656 gen 255362 key (EXTENT_CSUM EXTENT_CSUM 4913644511232) block 8477966811136 gen 255362 key (EXTENT_CSUM EXTENT_CSUM 4913655652352) block 8477927342080 gen 232501 key (EXTENT_CSUM EXTENT_CSUM 4913672273920) block 8477956505600 gen 211461 key (EXTENT_CSUM EXTENT_CSUM 4913688895488) block 2095244050432 gen 255250 key (EXTENT_CSUM EXTENT_CSUM 4913701113856) block 6450721669120 gen 254346 key (EXTENT_CSUM EXTENT_CSUM 4913705517056) block 2095483715584 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4913720102912) block 6452041842688 gen 255281 key (EXTENT_CSUM EXTENT_CSUM 4913729728512) block 8477619224576 gen 255505 key (EXTENT_CSUM EXTENT_CSUM 4913743921152) block 8477841932288 gen 255532 key (EXTENT_CSUM EXTENT_CSUM 4913749307392) block 8477499588608 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4913759141888) block 8477929799680 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4913768996864) block 8477751410688 gen 254381 key (EXTENT_CSUM EXTENT_CSUM 4913784815616) block 8478404837376 gen 254826 key (EXTENT_CSUM EXTENT_CSUM 4913799761920) block 8477927243776 gen 222541 key (EXTENT_CSUM EXTENT_CSUM 4913801412608) block 2095249260544 gen 255250 key (EXTENT_CSUM EXTENT_CSUM 4913816383488) block 6450721619968 gen 254346 key (EXTENT_CSUM EXTENT_CSUM 4913823748096) block 8477929881600 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4913834254336) block 2095250554880 gen 254827 key (EXTENT_CSUM EXTENT_CSUM 4913848864768) block 8477581983744 gen 255218 key (EXTENT_CSUM EXTENT_CSUM 4913863110656) block 8478237048832 gen 224784 key (EXTENT_CSUM EXTENT_CSUM 4913865134080) block 8477829742592 gen 212218 key (EXTENT_CSUM EXTENT_CSUM 4913881702400) block 8478104633344 gen 255374 key (EXTENT_CSUM EXTENT_CSUM 4913895874560) block 8477759193088 gen 255504 key (EXTENT_CSUM EXTENT_CSUM 4913908670464) block 2095243853824 gen 255250 key (EXTENT_CSUM EXTENT_CSUM 4913923538944) block 8477883006976 gen 255532 key (EXTENT_CSUM EXTENT_CSUM 4913934700544) block 8477902307328 gen 254896 key (EXTENT_CSUM EXTENT_CSUM 4913948164096) block 8478039752704 gen 230061 key (EXTENT_CSUM EXTENT_CSUM 4913960562688) block 8477893263360 gen 255532 key (EXTENT_CSUM EXTENT_CSUM 4913974534144) block 8477701406720 gen 255506 key (EXTENT_CSUM EXTENT_CSUM 4913982152704) block 8478447419392 gen 254966 key (EXTENT_CSUM EXTENT_CSUM 4913990545408) block 8478032609280 gen 255241 key (EXTENT_CSUM EXTENT_CSUM 4913998557184) block 6450649448448 gen 255457 key (EXTENT_CSUM EXTENT_CSUM 4914013429760) block 6450685919232 gen 255066 key (EXTENT_CSUM EXTENT_CSUM 4914026553344) block 8478117609472 gen 211588 key (EXTENT_CSUM EXTENT_CSUM 4914043150336) block 2095244165120 gen 255250 key (EXTENT_CSUM EXTENT_CSUM 4914052521984) block 8477876486144 gen 255339 key (EXTENT_CSUM EXTENT_CSUM 4914063429632) block 6451884916736 gen 255281 key (EXTENT_CSUM EXTENT_CSUM 4914075656192) block 6450696847360 gen 255472 key (EXTENT_CSUM EXTENT_CSUM 4914089598976) block 2095702278144 gen 255250 key (EXTENT_CSUM EXTENT_CSUM 4914102054912) block 2896060088320 gen 246582 key (EXTENT_CSUM EXTENT_CSUM 4914115891200) block 8478298603520 gen 254675 key (EXTENT_CSUM EXTENT_CSUM 4914130063360) block 8478386814976 gen 251905 key (EXTENT_CSUM EXTENT_CSUM 4914143866880) block 8477500719104 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4914152570880) block 8477929897984 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4914164236288) block 6450691801088 gen 253085 key (EXTENT_CSUM EXTENT_CSUM 4914176966656) block 8477937795072 gen 255359 key (EXTENT_CSUM EXTENT_CSUM 4914191990784) block 8477986832384 gen 242644 key (EXTENT_CSUM EXTENT_CSUM 4914205011968) block 8478431232000 gen 229967 key (EXTENT_CSUM EXTENT_CSUM 4914219974656) block 6450685837312 gen 243164 key (EXTENT_CSUM EXTENT_CSUM 4914229489664) block 8478437212160 gen 212155 key (EXTENT_CSUM EXTENT_CSUM 4914244780032) block 8478429773824 gen 254676 key (EXTENT_CSUM EXTENT_CSUM 4914261147648) block 6450567839744 gen 255197 key (EXTENT_CSUM EXTENT_CSUM 4914274107392) block 6450708267008 gen 254588 key (EXTENT_CSUM EXTENT_CSUM 4914286198784) block 8477761110016 gen 254891 key (EXTENT_CSUM EXTENT_CSUM 4914290323456) block 8477524525056 gen 255493 key (EXTENT_CSUM EXTENT_CSUM 4914301665280) block 8477779968000 gen 255339 key (EXTENT_CSUM EXTENT_CSUM 4914312564736) block 8478408212480 gen 255403 key (EXTENT_CSUM EXTENT_CSUM 4914323267584) block 6450649481216 gen 255457 key (EXTENT_CSUM EXTENT_CSUM 4914335182848) block 6450685296640 gen 255458 key (EXTENT_CSUM EXTENT_CSUM 4914344677376) block 8477768417280 gen 255287 key (EXTENT_CSUM EXTENT_CSUM 4914353102848) block 2095481683968 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4914361483264) block 6450682101760 gen 255256 key (EXTENT_CSUM EXTENT_CSUM 4914367983616) block 6450693767168 gen 255256 key (EXTENT_CSUM EXTENT_CSUM 4914383478784) block 6450694324224 gen 233628 key (EXTENT_CSUM EXTENT_CSUM 4914399047680) block 8477987045376 gen 255361 key (EXTENT_CSUM EXTENT_CSUM 4914412744704) block 8478307549184 gen 255381 key (EXTENT_CSUM EXTENT_CSUM 4914428186624) block 8478244864000 gen 255381 key (EXTENT_CSUM EXTENT_CSUM 4914433777664) block 8477774594048 gen 246653 key (EXTENT_CSUM EXTENT_CSUM 4914546737152) block 8478216699904 gen 228246 key (EXTENT_CSUM EXTENT_CSUM 4914563305472) block 8478245945344 gen 255381 key (EXTENT_CSUM EXTENT_CSUM 4914576044032) block 6450721439744 gen 255281 key (EXTENT_CSUM EXTENT_CSUM 4914581688320) block 8478293983232 gen 254825 key (EXTENT_CSUM EXTENT_CSUM 4914590142464) block 2095650177024 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4914597494784) block 6450568921088 gen 255197 key (EXTENT_CSUM EXTENT_CSUM 4914610982912) block 8478371135488 gen 251905 key (EXTENT_CSUM EXTENT_CSUM 4914626797568) block 8477869326336 gen 212084 key (EXTENT_CSUM EXTENT_CSUM 4914630680576) block 8477845454848 gen 211870 key (EXTENT_CSUM EXTENT_CSUM 4914647302144) block 8478078418944 gen 254922 key (EXTENT_CSUM EXTENT_CSUM 4914662670336) block 8478430019584 gen 254676 key (EXTENT_CSUM EXTENT_CSUM 4914677780480) block 2095483994112 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4914693001216) block 2095484616704 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4914706898944) block 8477840654336 gen 255339 key (EXTENT_CSUM EXTENT_CSUM 4914714718208) block 2095484207104 gen 255251 key (EXTENT_CSUM EXTENT_CSUM 4914727444480) block 8477848092672 gen 255339 key (EXTENT_CSUM EXTENT_CSUM 4914740789248) block 8477971283968 gen 211893 key (EXTENT_CSUM EXTENT_CSUM 4914757410816) block 8478087774208 gen 229924 key (EXTENT_CSUM EXTENT_CSUM 4914770120704) block 8478289854464 gen 211979 key (EXTENT_CSUM EXTENT_CSUM 4914774007808) block 8477987684352 gen 211894 key (EXTENT_CSUM EXTENT_CSUM 4914790629376) block 6450681446400 gen 255256 key (EXTENT_CSUM EXTENT_CSUM 4914805555200) block 8477938810880 gen 223692 key (EXTENT_CSUM EXTENT_CSUM 4914807250944) block 8477829660672 gen 255339 key (EXTENT_CSUM EXTENT_CSUM 4914817228800) block 6450574770176 gen 255457 key (EXTENT_CSUM EXTENT_CSUM 4914826629120) block 8477688201216 gen 255514 key (EXTENT_CSUM EXTENT_CSUM 4914839814144) block 8478079074304 gen 254922 key (EXTENT_CSUM EXTENT_CSUM 4914854117376) block 6450690572288 gen 255007 key (EXTENT_CSUM EXTENT_CSUM 4914866855936) block 8478053515264 gen 255365 key (EXTENT_CSUM EXTENT_CSUM 4914881347584) block 8478107172864 gen 222728 key (EXTENT_CSUM EXTENT_CSUM 4914887307264) block 8478301421568 gen 211978 key (EXTENT_CSUM EXTENT_CSUM 4914903928832) block 8478307958784 gen 211978 key (EXTENT_CSUM EXTENT_CSUM 4914920525824) block 8478308401152 gen 211978 key (EXTENT_CSUM EXTENT_CSUM 4914937147392) block 8478308794368 gen 211978 key (EXTENT_CSUM EXTENT_CSUM 4914953691136) block 8477544480768 gen 254881 key (EXTENT_CSUM EXTENT_CSUM 4914968854528) block 6450716000256 gen 255472 key (EXTENT_CSUM EXTENT_CSUM 4914979389440) block 8477903044608 gen 254896 key (EXTENT_CSUM EXTENT_CSUM 4914994855936) block 8477900636160 gen 255341 key (EXTENT_CSUM EXTENT_CSUM 4915010801664) block 8478087577600 gen 228567 key (EXTENT_CSUM EXTENT_CSUM 4915015127040) block 8478116757504 gen 255374 key (EXTENT_CSUM EXTENT_CSUM 4915028074496) block 8477920133120 gen 212219 key (EXTENT_CSUM EXTENT_CSUM 4915031957504) block 7714281635840 gen 254868 key (EXTENT_CSUM EXTENT_CSUM 4915039379456) block 6450697109504 gen 255472 key (EXTENT_CSUM EXTENT_CSUM 4915048333312) block 6450697142272 gen 255472 key (EXTENT_CSUM EXTENT_CSUM 4915059974144) block 8477896966144 gen 255532 uname -a Linux amdf 5.13.0-0.rc1.20210513gitc06a2ba62fc4.15.fc35.x86_64 #1 SMP Thu May 13 21:24:20 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux btrfs --version btrfs-progs v5.12.1 sudo btrfs fi show /var/vols/8T-5/ Label: 'btrfs' uuid: 6a32b7e3-0ad3-4316-942d-ec568e1e86f8 Total devices 1 FS bytes used 5.75TiB devid 1 size 7.28TiB used 5.82TiB path /dev/sdc2 sudo btrfs fi df /var/vols/8T-5/ Data, single: total=5.80TiB, used=5.74TiB System, DUP: total=32.00MiB, used=656.00KiB Metadata, DUP: total=11.00GiB, used=10.43GiB GlobalReserve, single: total=512.00MiB, used=0.00B sudo btrfs device stats /var/vols/8T-5/ [/dev/sdc2].write_io_errs 0 [/dev/sdc2].read_io_errs 0 [/dev/sdc2].flush_io_errs 0 [/dev/sdc2].corruption_errs 3012 [/dev/sdc2].generation_errs 2