On 2019/11/5 下午11:04, Sergiu Cozma wrote: > hi, i need some help to recover a btrfs partition > i use btrfs-progs v5.3.1 > > btrfs rescue super-recover https://pastebin.com/mGEp6vjV > btrfs inspect-internal dump-super -a https://pastebin.com/S4WrPQm1 > btrfs inspect-internal dump-tree https://pastebin.com/yX1zUDxa > > can't mount the partition with > BTRFS error (device sdb4): bad tree block start, want 856119312384 have 0 Something wiped your fs on-disk data. And the wiped one belongs to one of the most essential tree, chunk tree. What's the history of the fs? It doesn't look like a bug in btrfs, but some external thing wiped it. Thanks, Qu > [ 2295.237145] BTRFS error (device sdb4): failed to read chunk root > [ 2295.301067] BTRFS error (device sdb4): open_ctree failed >
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