On OpenVZ 6, Container fails to start with error:
Starting container… vzquota : (error) Quota on syscall for id 1590: File exists vzquota : (error) Native quota is already running for this partition. vzquota on failed 
When checked found, / partition already had quota set.
# mount | grep quota /dev/md1 on / type ext4 (rw,errors=remount-ro,usrjquota=aquota.user,jqfmt=vfsv0)
To fix this issue you can do one of following:
- Disable temporary quotas on the node:
# quotaoff -a
- Disable quota for / partition in /etc/fstab .
- Create separate partition for /vz without quota .