> So please describe more in detail what kind of backuping you want. I just want to regularly rsync /home to the "backup" partition with some history (along the lines of
https://netfuture.ch/2013/08/simple-versioned-timemachine-like-backup-using-rsync/ ). This partition (or part of it) will later also be backed up to some other machine. The partition will be mounted read-only most of the time; only for back-up it will remounted. I would prefer that the backup partition be readable / mountable from other machines. That's why I tried a separate MBR partition rather than an OpenBSD disklabel one. Ruda