Okay cool. I would be wary of that drive just in case, and I would definitely schedule weekly SMART short tests and monthly BTRFS scrubs on it if you go with BTRFS in the future. EXT4/XFS/etc do not have a concept of data checksums, which means they can’t scrub and check for bitrot - this might be problematic if you find that your disk starts causing bitrot because you won’t know where it’s happening.