Fedora, as do other distros, freaks out when you add a physical drive to a system which had been previously part of another logical volume. This doesn’t happen often, but if it does, the symptom is when you run system-config-lvm and it exits unexpectedly with:
'NoneType' object is not iterable
The way to resolve this is to fdisk the new disk on the system, create a partition on it, and write that partition table back to the disk. This overwrites the previous LVM information.