I installed Service Pack 1 for Windows Server 2008 R2 on the hardware node, rebooted the server. Now containers are not running and the system event log contains the following errors:
The vzktech service failed to start due to the following error: A device attached to the system is not functioning.
The vzcore service depends on the vzktech service which failed to start because of the following error: A device attached to the system is not functioning.
Upgrade to Service Pack 1 for Windows Server 2008 R2 is not supported by Virtuozzo containers 4.6 and needs to to be uninstalled from the node. Refer to the following KB article:
10051 Does Virtuozzo containers 4.6 support Windows Server 2008 R2 Service Pack 1?
Not all Windows 2008R2 SP1 editions and locales are supported by Virtuozzo containers for Windows. For more information refer to this article:
113610 Windows 2008R2 SP1 locales and editions supported by Virtuozzo containers for Windows