1
I had a 500GB disk with BTRFS on it in my NAS. I recently got a 4TB disk and I wanted to use just the new disk, without any downtime. So I ran btrfs replace start 1 /dev/sdb .
, waited for it to finish and unplugged the 500GB drive.
Now as I lost access to the 4TB disk, I want to recover all the data off the replaced 500GB disk, but the BTRFS partition on it is no longer recognized as such. I tried to mount it normally, with -o degraded
, -o recovery,ro
, I even tried btrfs restore
and btrfs check
, all of which failed. What are my options here?