On 2019/8/24 下午2:48, Patrick Dijkgraaf wrote: > Hi all, > > My server hung this morning, and I had to hard-reset is. I did not > apply any updates. After the reboot, my FS won't mount: > > [Sat Aug 24 08:16:31 2019] BTRFS error (device sde2): super_total_bytes > 92017957797888 mismatch with fs_devices total_rw_bytes 184035915595776 > [Sat Aug 24 08:16:31 2019] BTRFS error (device sde2): failed to read > chunk tree: -22 > [Sat Aug 24 08:16:31 2019] BTRFS error (device sde2): open_ctree failed > > However, running btrfs rescue shows: > root@cornelis ~]# btrfs rescue fix-device-size /dev/sdh2 > No device size related problem found That's strange. Would you please dump the chunk tree and super blocks? # btrfs ins dump-super -fFa /dev/sdh2 # btrfs ins dump-tree -t chunk /dev/sdh2 And, have you tried to mount using different devices? If it's some super blocks get corrupted, using a different device to mount may help. (With that said, it's better to call that dump-super for each device) > > FS config is shown below: > [root@cornelis ~]# btrfs fi show > Label: 'cornelis-btrfs' uuid: ac643516-670e-40f3-aa4c-f329fc3795fd > Total devices 1 FS bytes used 536.05GiB > devid 1 size 800.00GiB used 630.02GiB path /dev/mapper/cornelis- > cornelis--btrfs > > Label: 'data' uuid: 43472491-7bb3-418c-b476-874a52e8b2b0 > Total devices 16 FS bytes used 36.61TiB > devid 1 size 7.28TiB used 2.65TiB path /dev/sde2 > devid 2 size 3.64TiB used 2.65TiB path /dev/sdf2 > devid 3 size 3.64TiB used 2.65TiB path /dev/sdg2 > devid 4 size 7.28TiB used 2.65TiB path /dev/sdh2 > devid 5 size 3.64TiB used 2.65TiB path /dev/sdi2 > devid 6 size 7.28TiB used 2.65TiB path /dev/sdj2 > devid 7 size 3.64TiB used 2.65TiB path /dev/sdk2 > devid 8 size 3.64TiB used 2.65TiB path /dev/sdl2 > devid 9 size 7.28TiB used 2.65TiB path /dev/sdm2 > devid 10 size 3.64TiB used 2.65TiB path /dev/sdn2 > devid 11 size 7.28TiB used 2.65TiB path /dev/sdo2 > devid 12 size 3.64TiB used 2.65TiB path /dev/sdp2 > devid 13 size 7.28TiB used 2.65TiB path /dev/sdq2 > devid 14 size 7.28TiB used 2.65TiB path /dev/sdr2 > devid 15 size 3.64TiB used 2.65TiB path /dev/sds2 > devid 16 size 3.64TiB used 2.65TiB path /dev/sdt2 What's the profile used on so many devices? RAID10? The simplest way to fix it is to just update the Thanks, Qu > > Other info: > [root@cornelis ~]# uname -r > 4.18.16-arch1-1-ARCH > > I was able to mount is using: > [root@cornelis ~]# mount -o usebackuproot,ro /dev/sdh2 /mnt/data > > Now updating my backup, but I REALLY hope to get this fixed on the > production server! >
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