File Access Error with RollingFileAppender

["Stewart, Mark (GE Consumer Finance, consultant)" <ms...@wmcdirect.com>]

> I am having problems with the log4net in a small test project (Using VS.NET 2003, and log4net (1.2.0 Beta 8)).  It works fine when I use the ConsoleAppender, but fails to log some messages with the RollingFileAppender.
> 
> I have a simple log4net test solution with a primary project and a library project with a simple class and log method.
> Both projects call log4net.Config.DOMConfigurator.Configure() on startup, and set the class-level variables:
> 		
>   private static readonly log4net.ILog log = log4net.LogManager.GetLogger(typeof(TestClass));
>   private static readonly bool isDebugEnabled = log.IsDebugEnabled;
>   private static readonly bool isInfoEnabled = log.IsInfoEnabled;      
>  
> The primary project logs fine, but the library class instance fails to log to the file when instantiated and called, 
> and I get the following trace output:
> 
> log4net: FileAppender: Opening file for writing [C:\Myfiles\MyProjects\Log4NetTest\LogTest.log] append [True]
> log4net:ERROR RollingFileAppenderOpenFile(,True) call failed.
> System.IO.IOException: The process cannot access the file "C:\Myfiles\MyProjects\Log4NetTest\LogTest.log" because it is being used by another process.
> 
> When I debug through the code, I find that the writer for the failing class instance is "not defined".
> 
> Here is my config file...
> 
> <?xml version="1.0" encoding="utf-8" ?>
> <configuration>
> 	<!-- Register the section handler for the log4net section -->
> 	<configSections>
> 		<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
> 	</configSections>
> 
> 	
> 	<log4net debug="true">
> 	
> 		<appender name="RollingLogger" type="log4net.Appender.RollingFileAppender,log4net">
> 			<param name="File" value="C:\\Myfiles\\MyProjects\\Log4NetTest\\LogTest.log" />
> 			<param name="AppendToFile" value="true" />
> 			
> 			<param name="MaxSizeRollBackups" value="10" />
> 			<param name="MaximumFileSize" value="100KB" />
> 			<param name="RollingStyle" value="Composite" />
> 			<param name="DatePattern" value="yyyyMMdd" />
> 			<param name="StaticLogFileName" value="true" />
> 
> 			<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
> 
> 			<layout type="log4net.Layout.PatternLayout,log4net">
> 				<param name="ConversionPattern" value="%d [%t] %-5p %c [%x] - %m%n" />
> 			</layout>
> 		</appender>
> 				
> 		<appender name="DefaultLogger" type="log4net.Appender.ConsoleAppender" >
> 			<layout type="log4net.Layout.PatternLayout">
> 				<param name="ConversionPattern" value="%d [%t] %-5p %c [%x] - %m%n" />
> 			</layout>
> 		</appender>
> 
> 		<root>
> 		    <level value="DEBUG" />
> 		    <appender-ref ref="RollingLogger" />
> 		</root>
> 
> 	
> 		
> 	</log4net>
> 
> 	
> </configuration>
> 
I tried adding, then removing the <lockingModel> subkey for the appender, with no change.
As I said, the logging works fine with the ConsoleAppender, but not the file.
> Is this a known problem, or I am I doing something wrong?
> 
> 
> Thanks,
> 
> Mark Stewart
> MStewart@wmcdirect.com
>  
>