SymptomsSymptoms vary, however in all cases a "disk quota exceeded" error message is observed.
CauseMost probably disk quota is not properly enabled for the needed partition.
ResolutionOn the partition where quota is enabled, execute:
After that, reset the quota on the control panel server by executing the following command under root:
# quotaoff -a
# quotacheck -am
# quotaon -a
# su - cpanel -c "java psoft.hsphere.tools.SetQuota -lid N"
where N is the Logical Server ID where quota should be set
This will reset quota for all users on the system on all servers, so it might take quite a while to execute.