The problems I had were:
a) The same Problem, Roy had
b) unmounting the cgroups led to the problem, that I could not start the VM anymore
Removing the cgroups form the fstab and rebooting though helped. I was then again able to boot the vma and the Problem a was solved, as explained in this bug.
Hello Serge,
thanks for the hint.
I was now successful.
The problems I had were:
a) The same Problem, Roy had
b) unmounting the cgroups led to the problem, that I could not start the VM anymore
Removing the cgroups form the fstab and rebooting though helped. I was then again able to boot the vma and the Problem a was solved, as explained in this bug.
Thanks and Regards,
Hendrik