/lib!? who needs /lib!?

well, after surveying the damage after the fsck, it looks like my /lib directory is gone. Now, some people might be inclined to say, 'just copy one over from another computer!' But no.. I'm taking the more painful approach of backing everything up (the rest of my drive is fine) and reinstalling w/ rh7.3. I still don't know what made it do this...