Btrfs —check output

root@nextcloudpi:~# btrfs check /dev/sdcl
Opening filesystem to check. ..
Checking filesystem on /dev/sdc1
UUID:8b3e965c-c051-4b35-a8C4-689d10d869ea
[1/7] checking root items
[2/7] checking extents
bad key
ordering 23 24
bad key ordering 23 24
bad key ordering 23
24
bad key ordering 23 24
bad block 42418176
ERROR: errors found in extent allocation tree or chunk allocation
[3/7] checking free space cache




… many more lines like these:




root 492 inode 321188 errors 2001, no inode item, link count wrong
        unresolved ref dir 13152 index 53 namelen 2 name 87 filetype 1 errors 4, no inode ref
root 492 inode 321198 errors 2001, no inode item, link count wrong
        unresolved ref dir 13152 index 54 namelen 2 name 88 filetype 1 errors 4, no inode ref
root 492 inode 321200 errors 2001, no inode item, link count wrong
        unresolved ref dir 13152 index 55 namelen 2 name 89 filetype 1 errors 4, no inode ref
root 492 inode 321202 errors 2001, no inode item, link count wrong
        unresolved ref dir 13152 index 56 namelen 2 name 90 filetype 1 errors 4, no inode ref
root 492 inode 321221 errors 2001, no inode item, link count wrong
        unresolved ref dir 12942 index 44 namelen 14 name icons-vars.css filetype 1 errors 4, no inode ref
root 492 inode 321222 errors 2001, no inode item, link count wrong
        unresolved ref dir 12942 index 45 namelen 19 name icons-list.template filetype 1 errors 4, no inode ref
root 492 inode 321223 errors 2001, no inode item, link count wrong
        unresolved ref dir 12945 index 128 namelen 20 name 15f1-0334-server.css filetype 1 errors 4, no inode ref
root 492 inode 321224 errors 2001, no inode item, link count wrong
        unresolved ref dir 12945 index 129 namelen 25 name 15f1-0334-server.css.deps filetype 1 errors 4, no inode ref
root 492 inode 321225 errors 2001, no inode item, link count wrong
        unresolved ref dir 12945 index 130 namelen 25 name 15f1-0334-server.css.gzip filetype 1 errors 4, no inode ref
root 492 inode 321226 errors 2001, no inode item, link count wrong
        unresolved ref dir 12945 index 131 namelen 27 name 15f1-0334-css-variables.css filetype 1 errors 4, no inode ref
root 492 inode 321227 errors 2001, no inode item, link count wrong
        unresolved ref dir 12945 index 132 namelen 32 name 15f1-0334-css-variables.css.deps filetype 1 errors 4, no inode ref
root 492 inode 321228 errors 2001, no inode item, link count wrong
        unresolved ref dir 12945 index 133 namelen 32 name 15f1-0334-css-variables.css.gzip filetype 1 errors 4, no inode ref
root 492 inode 321585 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3072 namelen 51 name 22-08-05 19-23-02 0231.mov.ocTransferId5517399.part filetype 1 errors 4, no inode ref
root 492 inode 321586 errors 2001, no inode item, link count wrong
        unresolved ref dir 29173 index 1714 namelen 9 name phpnmbOCW filetype 1 errors 4, no inode ref
root 492 inode 321587 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3084 namelen 26 name 22-08-05 19-17-16 0230.mov filetype 1 errors 4, no inode ref
root 492 inode 321588 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3077 namelen 26 name 22-08-05 19-09-52 0229.mov filetype 1 errors 4, no inode ref
root 492 inode 321591 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3080 namelen 26 name 22-08-05 19-28-42 0232.mov filetype 1 errors 4, no inode ref
root 492 inode 321593 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3079 namelen 26 name 22-08-05 19-35-15 0233.mov filetype 1 errors 4, no inode ref
root 492 inode 321595 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3083 namelen 26 name 22-08-06 06-37-39 0234.png filetype 1 errors 4, no inode ref
root 492 inode 321597 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3086 namelen 27 name 22-08-06 08-32-33 0235.heic filetype 1 errors 4, no inode ref
root 492 inode 321599 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3090 namelen 26 name 22-08-06 08-52-48 0236.jpg filetype 1 errors 4, no inode ref
root 492 inode 321601 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3089 namelen 26 name 22-08-06 10-45-16 0237.jpg filetype 1 errors 4, no inode ref
root 492 inode 321603 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3087 namelen 54 name 22-08-06 11-09-32 0238.mov.ocTransferId1194349819.part filetype 1 errors 4, no inode ref
root 492 inode 321604 errors 2001, no inode item, link count wrong
        unresolved ref dir 29173 index 1723 namelen 9 name phpL1BF1d filetype 1 errors 4, no inode ref
root 492 inode 321605 errors 2001, no inode item, link count wrong
        unresolved ref dir 24337 index 3088 namelen 53 name 22-08-06 11-14-09 0239.mp4.ocTransferId496006079.part filetype 1 errors 4, no inode ref
root 492 inode 321606 errors 2001, no inode item, link count wrong
        unresolved ref dir 29173 index 1724 namelen 9 name phpDAcy85 filetype 1 errors 4, no inode ref
ERROR: errors found in fs roots
found 160715055104 bytes used, error(s) found
total csum bytes: 156595448
total tree bytes: 207028224
total fs tree bytes: 8830976
total extent tree bytes: 8994816
btree space waste bytes: 34038897
file data blocks allocated: 347213824
 referenced 347213824