Steps to reproduce:
1) Perform plain vanilla installation of OpenSUSE 13.2 in a VirtualBox VM -
only change during installation: enable LVM and encryption.
2) Shutdown VM.

Actual Results:
Shutdown takes significantly longer in comparision to a setup without full disk
encryption And this does not seem to be related to the encryption overhead.
When shutting down the following messages appear before the virtual machine is
closed:
1.systemd-shutdown[1]: Cannot finalize remaining file systems and devices,
giving up.
2.systemd-shutdown[1]: Failed to mkdir /run/initramfs/oldroot: Read-only file
system

Expected Results:
As this seems not to be a real problem, shutdown should not wait, but give up
immediately if encryption is used.