Another error that VPS Web Hosting experts while starting the VPS seems like this.
Starting Container …
vzquota : (error) Quota on syscall for id 1: Device or resource busy
vzquota : (error) Possible reasons:
vzquota : (error) – Container’s root is already mounted
vzquota : (error) – there are opened files inside Container’s private area
vzquota : (error) – your current working directory is inside Container’s
vzquota : (error) private area
vzquota : (error) Use -v option to see currently opened file(s).
Running vzquota on failed for Container 1 
Container start failed
If it happens to you , run a grep to see if any processes are running from inside the container’s private folder (replace ’1′ with your VPS id).
lsof 2> /dev/null | egrep ‘/vz/root/1/|/vz/private/1/’
- Kill of any processes this returns,
- Restart the container.