ZenedithPL

I gave it up and started farming chia. I recovered the data from an almost up-to-date backup. Thank you for your help. (Sorry for lag but I was *blacklisted*?!)

I tried a lot of commands: sudo btrfs rescue zero-log /dev/vg2/volume_2 sudo btrfs rescue super /dev/vg2/volume_2 sudo btrfs-find-root /dev/vg2/volume_2 sudo btrfs inspect-internal dump-super -f /dev/vg2/volume_2 Tried to mount: sudo mount /dev/vg2/volume_2 /volume2 sudo mount -o clear_cache /dev/vg2/volume_2 /volume2 sudo mount -o recovery /dev/vg2/volume_2 /volume2 sudo mount -t btrfs -o recovery,nospace_cache,clear_cache /dev/vg2/volume_2 /volume2 sudo btrfs check --init-extent-tree /dev/vg2/volume_2 sudo btrfs check --init-csum-tree /dev/vg2/volume_2 sudo btrfs check --repair /dev/vg2/volume_2 sudo btrfs restore /dev/vg2/volume_2 /volume2 With no success. After some long time I check result of this: sudo btrfs rescue chunk-recover -v /dev/vg2/volume_2 And got results: Total Chunks: 887 Recoverable: 879 Unrecoverable: 8 Orphan Block Groups: Orphan Device Extents: Chunk tree recovery failed Looks good, but anything has changed

Is any chances to rebuild btrfs without ssd cache (loosing data from cache) ?

OLD DSM version could be DSM_DS918+_23739.pat so also 6.2.3...

Hi there, I'm have used my old 1150 socket stack to build xpenology. Info: Boot: jun 1.04 Model name: DS918+ CPU: INTEL xenon 1265L Total physical memory: 16 GB OLD DSM version: DSM 6.2.2 x ? NOW DSM version: DSM 6.2.3-25426 Update 3 2 x nvme as SSD cache (ssd cache to OLD volume2) 2 x 14TB WD white (problematic OLD volume 2, md4 ) 2 x some other hdd (volume 1, md2) have backup files (dss) One day it just did not run web interface, or more precisely, it booted from the pendrive but showed no more signs of life (no possibility to connect to the host, but netowrk adapter worked in e.g. reinstall mode). So I created a new pendrive with boot 1.04 as I had it before, only this time I uploaded various DSM versions and try migrations, reinstalls. Finally I found one version that works (6.2.3 - 25426), unfortunately I don't know what verson I had before (probably 6.2.2 - x). To achieve this, I used a blank SSD (sata) drive with clan instll xpenology but unfortunately I deleted earlier the synology partitions from both main WDs I had data on. The situation is additionally compiled by the fact that the SSD cache from nvme disks was attached to this storage pool (volume2). So I'm at a point where I can't restore both my WD 12TB drives and SSD cache used by them. Below are the commands I tried to use on my synology (before I have tried on live cd ubuntu) to save the day, but it just overwhelms me. How to restore/repair volume2?