additional info: it's a simple partition on a samsung 840evo ssd, no encryption, no md, no raid mount flags rw,relatime,ssd,space_cache,subvolid=5,subvol=/ mounted as /home and it's pretty old(couple of years) and i'm like 70% sure it was converted from ext4 On Wed, Nov 6, 2019 at 6:21 PM Sergiu Cozma <lssjbrolli@xxxxxxxxx> wrote: > > btrfs inspect-internal dump-super -af /dev/sdb4 | grep chunk_root > chunk_root_generation 687369 > chunk_root 856119312384 > chunk_root_level 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > chunk_root_generation 687369 > chunk_root 856119312384 > chunk_root_level 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > chunk_root_generation 687369 > chunk_root 856119312384 > chunk_root_level 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > backup_chunk_root: 856119312384 gen: 687369 level: 1 > > if i understand this correctly there is only one copy of the chunk > root in the whole fs and mine is corrupted? > > On Wed, Nov 6, 2019 at 5:52 PM Sergiu Cozma <lssjbrolli@xxxxxxxxx> wrote: > > > > Hi, thanks for taking the time to help me out with this. > > > > The history is kinda bad, I tried to resize the partition but gparted > > failed saying that the the fs has errors and after throwing some > > commands found on the internet at it now I'm here :( > > > > Any chance to recover or rebuild the chunk tree? > > > > > > On Wed, Nov 6, 2019, 13:34 Qu Wenruo <quwenruo.btrfs@xxxxxxx> wrote: > > > > > > > > > > > > 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 > > > > > > >
