Created attachment 861810 [details]
engine log

Description of problem:
In oVirt engine beta 2, trying to run once a windows VM with sysprep enabled (default settings) results in error, with message:
"Cannot run VM. VM is running."
In engine logs, a NullErrorException is spotted (logs attached)

However, run once can be still used if we disable the sysprep:
Run Once panel -> Boot options -> de-tick the "attach floppy" checkboc (effectively disabling sysprep AFAIK)


Version-Release number of selected component (if applicable):
engine:
  compiled locally from git tag ovirt-engine-3.4.0_beta2
jdk:
  java version "1.7.0_51"
  OpenJDK Runtime Environment (fedora-2.4.5.0.fc19-x86_64 u51-b31)
  OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode)
jboss: jboss-as-7.1.1-21.fc19.noarch


How reproducible:
100% of times on my tests

Steps to Reproduce:
1. install ovirt-engine 3.4.0 beta2 (I did from sources but shouldn't be relevant)
2. create a windows VM
3. run the windows VM with sysprep enabled (as it is by default)

Actual results:
Error message

Expected results:
Windows VM boots up

Additional info:
Linux VMs seems not affected.

In the attached logs, please note the vm is 'wintest1'; first try is succesfull (sysprep disabled); second try is UNsuccesfull and shows the behaviour dscribed here.