vzquota : (error) Quota getstat syscall for id 101: Inappropriate ioctl for device
vzquota init failed 
This is a typical Quota error message on OpenVZ servers while starting a VPS. The message indicates that you need to initialize quota on the VPS. You can follow the below steps to correct the issue
rm -f /var/vzquota/quota.101 vzquota drop 101 vzctl start 101
where, 101 is the VPS ID.
If you continue to receive the same error message while starting the VPS,
1. Make sure the server is booted with the OpenVZ kernel, you can check that out using
2. The vz service is online.
service vz status
if not, restart the vz service
service vz start
Once you confirm the above two things, start the vps again with the vzctl command.