I don't know if it's related, but since several days (when i upgraded HotPot module from version 36 to 39 and then 41), i regularly (each day) encounter this problem : i receive an email like this one:
Insert into log table failed at Tuesday 09th of December 2014 08:35:14 AM.
It is possible that your disk is full.
The failed query parameters are:
'time' => 1418114114,
'userid' => '39932',
'course' => '265',
'ip' => '10.7.75.86',
'module' => 'hotpot',
'cmid' => '13018',
'action' => 'OLD_attempt_started',
'url' => 'view.php?id=102',
'info' => NULL,
Sometimes the message is refering to OLD_attempt_started and sometimes to OLD_attempt_submitted.
My disk is not full !
I've checked, and there are no automatical operation at this time (no statistics, no backup, no cron).
For one instance, it appears nearly always at the same time (between 08:30 AM and 08:35 AM), and for the other instance (on the same server), the range is more large (between 5:00 PM and 9:42 PM).
Do someone have an idea?