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http://jira.qos.ch/browse/LBCORE-147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12083#action_12083
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Alexander Lauper commented on LBCORE-147:
-----------------------------------------
Hello
Same situation here (logback 0.9.26, linux 2.6.26) using
TimeBasedRollingPolicy.
maxHistory is set to 30 (days) but I got 33 log files (would have expected 31).
It's possible that the machine wasn't running for 2 days.
As I am using this on a embedded device which might be out of service for 0 to
infinite days the solution suggested by Greg Thomas would not work well for me.
The documentation says:
"The maxHistory property controls the maximum number of archive files to keep,
deleting older files. For example, if you specify monthly rollover, and set
maxHistory to 6, then 6 months worth of archives files will be kept with files
older than 6 months deleted."
I am very sorry, but this is not implemented that way. The current
implementation deletes the one and only file based on the current date.
According to the doc I guess most people (including me) would expect that there
will never be more files than maxHistory + 1 regardless of any gaps the
machine/application wasn't running. I strongly assume this would be the
generally desired behaviour.
An extreme example would be setting maxHistory to 1 and let the
machine/application run every other day only. In this case I guess (didn't test
it) the amount of files would grow indefinitely. On an unattended embedded
device this might lead to a catastrophic situation (disk/flash space running
out).
What's the status on this issue? It was opened over a year ago ...
Apart from that I love logback. Keep up the good work!
Kind regards,
Alex
> RollingPolicy MaxHistory not deleting old files
> -----------------------------------------------
>
> Key: LBCORE-147
> URL: http://jira.qos.ch/browse/LBCORE-147
> Project: logback-core
> Issue Type: Bug
> Components: Rolling
> Affects Versions: 0.9.18
> Environment: linux 2.6.18 64bits apache-tomcat-6.0.20 java/jre1.6.0_18
> Reporter: Rafael Diaz Maurin
> Assignee: Ceki Gulcu
> Attachments: TimeBasedRollingWithArchiveRemovalTest.java
>
>
> The MaxHistory does not do the trick : the old files are not deleted at all :
> cat logging.xml
> <appender name="IDP_ACCESS"
> class="ch.qos.logback.core.rolling.RollingFileAppender">
> <File>/shibboleth-idp/logs/idp-access.log</File>
> <Append>false</Append>
> <ImmediateFlush>true</ImmediateFlush>
> <RollingPolicy
> class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
>
> <FileNamePattern>/shibboleth-idp/logs/old/idp-access-%d{yyyy-MM-dd_HH-mm}.log.gz</FileNamePattern>
> <MaxHistory>3</MaxHistory>
> </RollingPolicy>
> <layout class="ch.qos.logback.classic.PatternLayout">
> <Pattern>%msg%n</Pattern>
> </layout>
> </appender>
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