Looks like a bug I reported over a year ago.

systemd-208-10: Hangs if a partition referenced in fstab has been formatted
>
> https://bugs.freedesktop.org/show_bug.cgi?id=74724
>
>





On Tue, Apr 21, 2015 at 7:53 AM, Joerg Reisenweber <reisenweber@???>
wrote:

> On Tue 21 April 2015 12:06:55 Martin Steigerwald wrote:
> > two more reasons
>
> just one comment:
> "Those who do not understand Unix are condemned to reinvent it, poorly."
> http://en.wikipedia.org/wiki/Henry_Spencer
>
> /j
> _______________________________________________
> Dng mailing list
> Dng@???
> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
>
>