If you’re running cPanel server on a OpenVZ hardware node, you might face issues with quota for few reasons:
1. Secondary quota might not have been enabled on hardware node.
You can verify by checking for “DISK_QUOTA=yes” in /etc/vz/conf/vz.conf
Also, QUOTAUGIDLIMIT needs to be set for the VPS in /etc/sysconfig/vz-scripts/CT_ID.conf (PS: CT_ID is the container id of the VPS)
2. You should have initialized the quota via WHM.
If you continue to face problem even after applying both fixes, re-initializing quota might help as per http://wiki.openvz.org/Cpanel_quotas Here is the excerpt:
WHM/Cpanel, a popular commercial web-based control panel for Linux, has a tendency to overwrite the special quota files in the VE context. I am referring to:
lrwxr-xr-x 1 root root 39 Jun 8 17:27 aquota.group -> /proc/vz/vzaquota/00000073/aquota.group
lrwxr-xr-x 1 root root 38 Jun 8 17:27 aquota.user -> /proc/vz/vzaquota/00000073/aquota.user
The result of these being overwritten will be WHM showing “unlimited” quota reports for all users in the system. An quick solution to this is to run these commands from within the VE as root:
rm -rf /aquota.user 2>/dev/null
rm -rf /aquota.group 2>/dev/null
unlink /aquota.user 2>/dev/null
unlink /aquota.group 2>/dev/null
for x in `find /proc/vz/vzaquota/ | tail -2 `; do ln -s $x / ; done