Hello Qu, Hello Hugo, i got this result when i try to recover the chunk tree. # btrfs check /dev/mapper/vg0-virtualbox bytenr mismatch, want=1263835381760, have=0 ERROR: cannot open file system # btrfs rescue chunk-recover -y /dev/mapper/vg0-virtualbox Scanning: DONE in dev0 open with broken chunk error Chunk tree recovery failed Did you any clue? Michael
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