Someone

[root@vps360ua1 /]# ll /aq*
lrwxrwxrwx 1 root root 39 Apr 14 02:44 /aquota.group -> /proc/vz/vzaquota/00000015/aquota.group
lrwxrwxrwx 1 root root 38 Apr 14 02:44 /aquota.user -> /proc/vz/vzaquota/00000015/aquota.user
[root@vps360ua1 /]# quotaon /
quotaon: Cannot find quota file on / [/dev/simfs] to turn quotas on/off.
quotaon: Cannot find quota file on / [/dev/simfs] to turn quotas on/off.
[root@vps360ua1 /]# quota    
quota: Quota file not found or has wrong format.