Description of problem:
After formatting the root filesystem, mdadmLine calls lookup_raid_device, but that fails because existing raid devices aren't registered.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Have an already-installed box with existing raid devices, used as physical volumes or direct filesystems
2.Try to run a kickstart install creating say a new logical volume for the root device
Anaconda backtraces after formatting the root filesystem, while generating mdadm.conf
This worked before
Created attachment 114982 [details]
Patch that, placed in an update disk, worked around the bug, enabling the install to proceed
Applied for FC4 and Rawhide.