Description of problem:
Cannot resize encrypted devices.

Version-Release number of selected component (if applicable):
Fedora 12 i686

How reproducible:
Always

Steps to Reproduce:
1. Install Fedora with an encrypted block device done during install.
2. After installation, try to resize the encrypted  volume using the normal command line tools (lvresize, cryptsetup resize).

Actual results:
'cryptsetup resize' throws the following error:

Device (null) doesn't exist or access denied.
Command failed: Device (null) doesn't exist or access denied.

And the device stays the same size.

Expected results:
cryptsetup should show no results, but should resize the encrypted device, adding the space that was added to the underlying logical volume by the lvresize.

Additional info:
Fresh Fedora 12 install on an HP 6730b.