If INIT is in D state and cannot be killed then you should try to stop the quota
vzquota off <veid>
How do I solve vzquota error: "vzquota : (error) Quota on syscall for 101: Device or resource busy"?
Please make sure there are no open files inside a container root and/or private area (and your current working directory is not inside a container root/private area) by running the following command on the hardware node (assuming there is a problem with the container #101):
# lsof 2> /dev/null | egrep '/vz/root/101|/vz/private/101'
If there are any processes which hold a directory inside a container root/private area - revise and kill them.