The referenced bug is a failure to kickstart when the user specifies
that we install to a pre-existing logical volume which contains one or
more encrypted physical volumes.
Joel's recent patch to Partitions.setFromDisk gets us part of the way
there by prompting for a passphrase so we can look at the pv.
The second problem comes when lvm, in all it's brilliance, returns
'/dev/dm-0' from pvdisplay instead of '/dev/mapper/foo'. I have a little
patch to resolve /dev/dm-X to a useful (ie: persistent) device mapper
name.
Comments, suggestions?