On Wednesday 01 March 2017 19:14:07 Marc Joliet wrote: > In any > case, I started btrfs-check on the device itself.
OK, it's still running, but the output so far is: # btrfs check --mode=lowmem --progress /dev/sdb2 Checking filesystem on /dev/sdb2 UUID: f97b3cda-15e8-418b-bb9b-235391ef2a38 ERROR: shared extent[3826242740224 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3826442825728 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3826744471552 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3827106349056 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3827141001216 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3827150958592 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3827251724288 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3827433795584 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3827536166912 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3827536183296 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3827621646336 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3828179406848 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3828267970560 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3828284530688 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3828714246144 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3828794187776 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3829161340928 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3829373693952 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3830252130304 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3830421159936 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3830439141376 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3830441398272 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3830785138688 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3831099297792 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3831128768512 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3831371513856 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3831535570944 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3831591952384 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3831799398400 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3831829250048 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3831829512192 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832011440128 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832011767808 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832023920640 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832024678400 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832027316224 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832028762112 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832030236672 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832030330880 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832161079296 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832164904960 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832164945920 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3832613765120 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3833727565824 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3833914073088 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3833929310208 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: shared extent[3833930141696 4096] lost its parent (parent: 3827251183616, level: 0) ERROR: extent[3837768077312, 24576] referencer count mismatch (root: 33174, owner: 1277577, offset: 4767744) wanted: 1, have: 0 [snip many more referencer count mismatches] ERROR: extent[3878247383040, 8192] referencer count mismatch (root: 33495, owner: 2688918, offset: 3874816) wanted: 2, have: 3 ERROR: block group[3879328546816 1073741824] used 1072840704 but extent items used 1129164800 ERROR: extent[3879516581888, 40960] referencer count mismatch (root: 33530, owner: 1277577, offset: 23461888) wanted: 1, have: 0 [snip many more referencer count mismatches] ERROR: extent[3951758860288, 16384] referencer count mismatch (root: 33189, owner: 1277577, offset: 519880704) wanted: 1, have: 0 This is 56 lines of output, the unabridged output contains enough "referencer count mismatches" to fill 1329 lines of output. Could that be because there are deleted snapshots that btrfs-cleaner hasn't been able to clean up? Greetings -- Marc Joliet -- "People who think they know everything really annoy those of us who know we don't" - Bjarne Stroustrup
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