we have found a very easy solution. that´s total easy.
in original openvz templates the package "udev" is installed in image. after installation of a openvz image or migraten of a openvz image you must login to the openvz vm and must only apt-get remove --purge udev
after this its works fine
we hope, other users can use this easy solutions to fix this, if they have the self massage.
udev is not part of the proxmox template and therefore must be something added by you. udev also gives no meaning at all in a container since a container will only be able to use devices from the host.