Modern linux builds apparently require /usr to be on the same partition as /. They send you to a smug and self-congradulatory web page explaining that it’s because you old farts suck.
My view is that it’s because the authors of udev and systemd are idiots who don’t know what /usr is for and ignored it, leading to unbootable systems. And then they won’t fix it because they don’t care that some people have been using that configuration for ten years.
Thanks for nothing, twerps.
Oh! I wonder if that’s what screwed up the upgrade to SuSE 12.2 on my Internet-facing server. It’s had a separate /usr partition for years, and upgrading to 12.2 screwed it up amazingly. Going back to init.d from systemd let it boot, and it’s still that way. I wonder if moving /usr to / would fix that.