Comment # 7 on bug 1137373 from Daniele Tombolini

(In reply to Franck Bui from comment #6)
> Thanks for the logs.
> 
> It seems a known issue that remains unfixed... see:
> https://github.com/systemd/systemd/pull/12013#issuecomment-479038739
> 
> So I'm tempted to close this bug and redirect you to upstream especially
> since your system is TW which uses the latest version of systemd available.

Why does not happens with /home ?
Anyway, is there a suitable workaround ? Maybe calling "mount -a" or reusing
generated unit file during boot ?

I use this partition for a lot of stuff (daily backup, data..).

A small sdd and big hdd is a very common setup nowdays so it's a very big
issue, IMHO.

Thanks.