Man, I love Arch, but updates shouldn't break your vps like that...
This is annoying. Debugging my boot using ovh rescue mode is terrible.
So apparently the problem is that Swich Root fails. I have no idea what that means, how to fix it or even why it happens. This vps has been working fine for a long time now and I find nothing in arch news that seems relevent.
And search has been less than successful so far.