I finally moved from OMV 2 to OMV3. With that I also had to abandon aufs. I used to old pooling(aufs) plugin together with SnapRaid for some parity.
While OMV 3 is running, I do have some issues with the new union file system. I cannot recover my old shares created using aufs. Although, the shares have the same name as before.
So what are my options? Since one of the disks seems to be quit a mess anyway (old shares and old pools). I think I would like to format them and then rebuild the union file system from scratch.
1) For that I would first copy the old shares spread across two disks to a new disk using rsync.
2) Format the old disks contain the messy pooled data (disconnect to backup drive to be safe)
3) Rebuild the union filesystem using the formated drives
4) Copy everything to the new union-filesystem.
Does this sound like a good plan to you?