Do you have any further details?
1. What is the result of trying to update or rename a VM? Is there an error message? Any indication at all?
A good starting place is to tail the vcloud-container-debug.log file:
tail +F /opt/vmware/vcloud-director/logs/vcloud-container-debug.log
Be aware that depending on how busy your environment is, the debug logs can roll over fairly quickly.
List the debug.log files in the /logs directory and you'll see 10 files all at 50MB. The size and number of logs can be adjusted in the log4j.properties file in /opt/vmware/vcloud-director/etc/
Check the date written and that will give you an idea of how frequent the logs roll.
1. Have an SSH session open in another window and enter your tail command. You could even pipe that through to a grep and filter on the VM name, moref or any other pertinent information which could help pinpoint the log entry.
2. Rename the VM
3. Make a note of the time
3. Stop the tail, cp the debug.log file to another file and navigate to the timestamp at which the event occurred
You could even use something like LNAV to watch the logs.