Created attachment 339406 [details]
Description of problem:
After asking to write the new storage layout to disk I got the attached traceback.
Version-Release number of selected component (if applicable):
Seems to happen regularly but I haven't done multiple tests with the testday livecd. I was seeing similar problems with other install/live images.
Steps to Reproduce:
1. I expect that most of the layout info is in the traceback. The only odd aspect when I did this set up was first selecting ext3 for / which was rejected because the livecd was using ext4 and I changed it without backing out of the custom layout page.
I tried it again without having to edit /'s fs type and still saw the same thing.
Wiping the partition info, using the April 14th boot.iso and using the updates kernel parameter to pick up the test day updates.img got me past this issue.
So possibly the partition or raid info was bad (from previous install tries) and causing a problem.
As I mentioned on irc, I did several install tries from the livecd without rebooting since after a failed install attempt I was back at the livecd desktop.
(Which I thought was a nice feature, but was advised one that I shouldn't take advantage of.)
*** This bug has been marked as a duplicate of bug 491729 ***