Description of problem:

Pretty simple:

1) Do a new install
2) Do a custom disk partitioning
3) Create a raid device, md0.  The underlying devices should *NOT* be encrypted
4) Set md0 to be formatted and encrpted
5) Hit 'next' and write changes to disk

After doing this the system will try for a couple of minutes then gets a giant anaconda installer failure.

Version-Release number of selected component (if applicable):


How reproducible:

All the time.

Steps to Reproduce:
1. see above.
2.
3.
  
Actual results:

Partition laytout in an unfinished state, in particular the raid array is pretty messed up.

Expected results:

An encrypted luks volume residing on the md device itself

(Not a software raid array across multiple luks devices)

Additional info: