Hey there,
kinda need help because I maliciously misunderstood the process and just thought the doc was outdated for v7.
Situation:
sdf: 12 TB parity drive
sdb: 6 TB FAULTY drive (1 digit smart errors 187, 197, 198 ), formatted XFS
sdc: 6 TB good drive, formatted XFS
Plan: Format new 12 TB drive sdd with ZFS (to try around with that) and replace faulty sdb in the array.
Steps taken: Pre-clear sdd, stop array, unassign disk2 sdb, re-assign sdd to disk2, start array -> automatically starts re-build -> stop that, because sdd says "Unmountable: not mounted" due to no FS -> set sdd to ZFS and format in "Array Operations" so it can be mounted and the rebuild started: 2nd fuck up not connecting the dots to what I was doing. I thought it didn't matter because sdd wasn't mounted yet, but unraid formatted "disk 2" with its drive, not just sdd.
tl;dr: Stopped rebuild, formatted "new disk" so it can be mounted, restarted rebuild. Data gone.
So, had to leave house after starting rebuild, then came back. Rebuild at 50%, started to notice missing files. Wondered why disk 2 didn't show any "size: used" in the Overview, checked data and it is gone. I stopped the re-build and powered down the array. Found this topic and knew I effed it.
So what do I do now?
Old sdb is still showing as active with SMART errors. Finish rebuild and copy all contents to sdd?
Re-insert sdb to array as disk 2, rebuild parity?, and re-swap to new sdd?
Any advice appreciated, not gonna touch with without more input. That's what I get for doing this quickly in the morning without properly reading the docs.