Warning (2): session_start(): open(/var/lib/php/session/sess_cguan3jm4dk87b282007l3lj2r, O_RDWR) failed: No space left on device (28) [APP/Config/bootstrap.php, line 2]

<?php
session_start();

$boot = true
$exception = array(
	'handler' => 'ErrorHandler::handleException'
)
$error = array(
	'handler' => 'ErrorHandler::handleError',
	'level' => (int) 24575
)
$not_admin = true
$engine = 'File'
$duration = '+10 seconds'
$prefix = 'cabg_'

session_start - [internal], line ??
include - APP/Config/bootstrap.php, line 2
Configure::bootstrap() - CORE/Cake/Core/Configure.php, line 98
include - CORE/Cake/bootstrap.php, line 432
[main] - APP/webroot/index.php, line 98

Warning (2): session_start() [<a href='http://php.net/function.session-start'>function.session-start</a>]: Failed to read session data: files (path: /var/lib/php/session) [APP/Config/bootstrap.php, line 2]

Code Context

<?php
session_start();

$boot = true
$exception = array(
	'handler' => 'ErrorHandler::handleException'
)
$error = array(
	'handler' => 'ErrorHandler::handleError',
	'level' => (int) 24575
)
$not_admin = true
$engine = 'File'
$duration = '+10 seconds'
$prefix = 'cabg_'

session_start - [internal], line ??
include - APP/Config/bootstrap.php, line 2
Configure::bootstrap() - CORE/Cake/Core/Configure.php, line 98
include - CORE/Cake/bootstrap.php, line 432
[main] - APP/webroot/index.php, line 98

Warning (2): session_start() [<a href='http://php.net/function.session-start'>function.session-start</a>]: open(/var/lib/php/session/sess_ud1i9db5ndhpci3oe7alugo4un, O_RDWR) failed: No space left on device (28) [CORE/Cake/Model/Datasource/CakeSession.php, line 745]

Code Context

                session_cache_limiter($limit);
            }
            session_start();

$limit = 'must-revalidate'

session_start - [internal], line ??
CakeSession::_startSession() - CORE/Cake/Model/Datasource/CakeSession.php, line 745
CakeSession::start() - CORE/Cake/Model/Datasource/CakeSession.php, line 219
CakeSession::write() - CORE/Cake/Model/Datasource/CakeSession.php, line 439
SessionComponent::write() - CORE/Cake/Controller/Component/SessionComponent.php, line 55
DefaultAppController::beforeFilter() - APP/Plugin/Default/Controller/DefaultAppController.php, line 105
CakeEventManager::dispatch() - CORE/Cake/Event/CakeEventManager.php, line 244
Controller::startupProcess() - CORE/Cake/Controller/Controller.php, line 682
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 189
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 111

Code Context

                session_cache_limiter($limit);
            }
            session_start();

$limit = 'must-revalidate'

session_start - [internal], line ??
CakeSession::_startSession() - CORE/Cake/Model/Datasource/CakeSession.php, line 745
CakeSession::start() - CORE/Cake/Model/Datasource/CakeSession.php, line 219
CakeSession::write() - CORE/Cake/Model/Datasource/CakeSession.php, line 439
SessionComponent::write() - CORE/Cake/Controller/Component/SessionComponent.php, line 55
DefaultAppController::beforeFilter() - APP/Plugin/Default/Controller/DefaultAppController.php, line 105
CakeEventManager::dispatch() - CORE/Cake/Event/CakeEventManager.php, line 244
Controller::startupProcess() - CORE/Cake/Controller/Controller.php, line 682
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 189
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 111