Freepbx.log huge and crashes system when drive full

A couple of times now in the last 3 months I have had the Freepbx.log file become huge 43G, which in turn fills the /dev/mapper/vg_ha-slash, and crashes Mysql making the system crippled. After deleting the file and rebooting the whole Server it works fine. The snipping of the log file i got was the below repeated. I am sorry i needed to get the system back up and running so I did not have time to investigate too much.

[2015-Apr-27 10:56:01] [PHP-WARNING] (/var/www/html/admin/libraries/php-asmanager.php:266) - fgets(): 490 is not a valid stream resource
[2015-Apr-27 10:56:01] [PHP-WARNING] (/var/www/html/admin/libraries/php-asmanager.php:262) - feof(): 490 is not a valid stream resource
[2015-Apr-27 10:56:01] [PHP-WARNING] (/var/www/html/admin/libraries/php-asmanager.php:266) - fgets(): 490 is not a valid stream resource
[2015-Apr-27 10:56:01] [PHP-WARNING] (/var/www/html/admin/libraries/php-asmanager.php:262) - feof(): 490 is not a valid stream resource