After doing something pretty stupid with gParted and LVM last night, I find myself reinstalling Fedora 20 today. I’ve found a fix to the FAILED package messages you get if you have tried running
fedup a few times trying to upgrade.
fedup tool creates a temporary upgrade cache in
/var/cache/system-upgrade/. If you are seeing any strange behavior with
fedup as it attempts to download packages, you might want to move into this directory and delete all data.
Deleting the data allowed me to successfully upgrade to Fedora 22.