Great! Sorry I didn't think of that earlier. Imagine my surprise when I first installed with a qcow2 image growable to 100gig. I expected it to stay around 4gig. Put the data on the second drive, started coping 70gigs to it. The next moring, my install was borked.. My image was grown to the 100gig and I didn't have a backup of the image yet. Can I shrink a qcow2? I don't know. So after finding the culprit, I just reinstalled.
Put this little command in your "bag of tricks" to find large directories over 500megs.
du -h <dir> | grep '[0-9]G'