Rather confused what to do here. Spent about 4 hours going through articles online and this forum but can't figure it out.
I did update & upgrade & dist-upgrade. After rebooting 2 out of my 4 drives were not connecting on boot. OMV5 was showing these drives as "missing".
I've checked /etc/fstab and it appears to be configured properly.
I can manually edit /etc/fstab to get the drives to work temporarily but of course this is reset on reboot.