@stefano how long have you been running this config for yourself? My experience is that Time Machine over Samba is “rock-solid” only until it isn’t. For probably 8 years now across multiple MacBooks and NASes I’ve had to trash my backup chain every 6-9 months because it gets in that state where it claims verification has failed and you can either
- keep the history but stop backing up
- or take new backups but lose all the history
I’d love to find a fix, but have never been able to.