SE PRODUJO UNA EXCEPCIÓN

Zend_Session::start() - /var/www/www.soloporteros.com/library/Zend/Session.php(Line:477): Error #2 session_start(): open(/var/lib/php5/sess_pmb52nohtv8ajb00er5lpetfs5, O_RDWR) failed: No space left on device (28) /var/www/www.soloporteros.com/library/Zend/Session.php(Line:487): Error #2 session_write_close(): open(/var/lib/php5/sess_pmb52nohtv8ajb00er5lpetfs5, O_RDWR) failed: No space left on device (28) /var/www/www.soloporteros.com/library/Zend/Session.php(Line:487): Error #2 session_write_close(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php5)
Pila de eventos:
#0 /var/www/www.soloporteros.com/library/Zend/Session/Namespace.php(143): Zend_Session::start(true)
#1 /var/www/www.soloporteros.com/library/Motor/Bootstrap.php(52): Zend_Session_Namespace->__construct('eca')
#2 /var/www/www.soloporteros.com/library/Zend/Application/Bootstrap/BootstrapAbstract.php(669): Motor_Bootstrap->_initSessionEca()
#3 /var/www/www.soloporteros.com/library/Zend/Application/Bootstrap/BootstrapAbstract.php(622): Zend_Application_Bootstrap_BootstrapAbstract->_executeResource('sessioneca')
#4 /var/www/www.soloporteros.com/library/Zend/Application/Bootstrap/BootstrapAbstract.php(586): Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap(NULL)
#5 /var/www/www.soloporteros.com/library/Zend/Application.php(355): Zend_Application_Bootstrap_BootstrapAbstract->bootstrap(NULL)
#6 /var/www/www.soloporteros.com/public_html/index.php(73): Zend_Application->bootstrap()
#7 {main}