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From "Dominik Psenner" <dpsen...@gmail.com>
Subject AW: RollingFileAppender overwriting file
Date Thu, 29 May 2014 12:01:00 GMT
Multithreading shouldn't be an issue. Try this:

 

 <http://stackoverflow.com/questions/2075603/log4net-process-id-information>
http://stackoverflow.com/questions/2075603/log4net-process-id-information

 

Von: Tim Sirmovics [mailto:tims@axima.com.au] 
Gesendet: Donnerstag, 29. Mai 2014 00:45
An: Log4NET User
Betreff: RE: RollingFileAppender overwriting file

 

I have changed the locking model to InterProcessLock but the problem still
occurs.

I started logging the thread number and found it is consistently "1"
throughout all runs of the application.

 

At this stage with no other ideas I am going to make sure the application
does not execute from 11:30 - 12:30 and see if this helps it to roll the log
over correctly.

 

From: Dominik Psenner [mailto:dpsenner@gmail.com] 
Sent: Tuesday, 27 May 2014 04:24 PM
To: 'Log4NET User'
Subject: AW: RollingFileAppender overwriting file

 

Just to be sure, use an InterProcessLock in your configuration and check if
this happens again. You might also want to include process information in
the log messages.

 

Von: Tim Sirmovics [mailto:tims@axima.com.au] 
Gesendet: Dienstag, 27. Mai 2014 02:49
An: log4net-user@logging.apache.org <mailto:log4net-user@logging.apache.org>

Betreff: FW: RollingFileAppender overwriting file

 

I have been using the RollingFileAppender through numerous log4net version
for about 3-4 years.

In the last few days I am now experiencing the following issue:

 

1.       Assume today is 27/05/2014

2.       Current log file is called Debug.log

3.       Log file builds up throughout the day.

4.       Next day (28/05/2014), log file Debug.log.27.log exists, last write
time according to windows is 27/05/2014 11:59 pm

5.       Open log file, all entries from 27/05 are gone, log only contains a
very small number of entries dated 28/05/2014 just after midnight.

 

I am now losing my logs for each day as they are being overwritten by the
first few logs after midnight.

Only one process writes to this file.

The process is limited to only running a single instance at a time.

I have not changed my configuration for a long time, however I have included
it below.

 

 

<!-- Last month, one file per day -->

  <appender name="DebugRollingFileAppender"
type="log4net.Appender.RollingFileAppender">

    <file value="Logs\Debug.log" />

    <appendToFile value="true" />

    <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />

    <rollingStyle value="Date" />

    <datePattern value=".dd'.log'" />

    <maxSizeRollBackups value="14" />

    <threshold value="DEBUG"/>

    <layout type="log4net.Layout.PatternLayout">

      <conversionPattern value="|%date| |%-5level|
|%property{log4net:HostName}| |%logger{2}|: %message%newline" />

    </layout>

  </appender>

 

 

Is there any way I can prevent this from happening?


Tim Sirmovics
IT
tims@axima.com.au <mailto:tims@axima.com.au> 

 
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