[logback-user] File not rolling over with SizeBasedTriggeringPolicy

[Gianni Doe]

Hi
My log files are not rolling over with the following appender and they  
grow indefinitely in size:

<appender class="ch.qos.logback.core.rolling.RollingFileAppender"
		  name="R">
	<File>${catalina.home}/logs/rp.log</File>
	<Append>true</Append>
	<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
		<level>debug</level>
	</filter>
	<rollingPolicy  
class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
		<FileNamePattern>rp.%i.log.gz</FileNamePattern>
		<MinIndex>1</MinIndex>
		<MaxIndex>3</MaxIndex>
	</rollingPolicy>	
	<TriggeringPolicy  
class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
		<MaxFileSize>5MB</MaxFileSize>
	</TriggeringPolicy>
	<layout class="ch.qos.logback.classic.PatternLayout">
		<Pattern>%-30(%d{HH:mm:ss.SSS} [%thread]) %-5level %logger{64} - %msg 
%n</Pattern>
	</layout>
</appender>

At some point this appender was working correctly so I'm a bit baffled  
- any suggestions for debugging why it's not working would be  
appreciated.
Thanks
Gianni

PS. Not sure if this is relevant but I've been upgrading logback as  
new versions have been released but I couldn't say if it stopped  
working with a particular release or not.