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https://issues.apache.org/jira/browse/LOG4NET-496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15051155#comment-15051155
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Dominik Psenner commented on LOG4NET-496:
-----------------------------------------
This mutex was introduced to prevent race conditions when rolling is done by
multiple processes. You could try with 1.2.15, but since you are getting an
access denied exception I do not think there is an easy fix at all. It might
well be possible that you cannot acquire mutex locks when your code executes in
the cloud, but that's just a wild guess. :-(
> RollingFileAppender.ActivateOptions throws UnauthorizedAccessException
> ----------------------------------------------------------------------
>
> Key: LOG4NET-496
> URL: https://issues.apache.org/jira/browse/LOG4NET-496
> Project: Log4net
> Issue Type: Bug
> Affects Versions: 1.2.14
> Reporter: Fabian Pachner
>
> We upgraded our Azure cloud service project from log4net 1.2.13 to 1.2.14 and
> received the following exception when the web roles are starting up:
> {code}
> System.UnauthorizedAccessException: Access to the path
> 'C__Resources_directory_9b9a1e064b78414281c81f861d0634b0.Role.Web.Frontend.DiagnosticStore_LogFiles_UI_UI_0'
> is denied.
> at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
> at System.Threading.Mutex.MutexTryCodeHelper.MutexTryCode(Object userData)
> at
> System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode
> code, CleanupCode backoutCode, Object userData)
> at System.Threading.Mutex.CreateMutexWithGuaranteedCleanup(Boolean
> initiallyOwned, String name, Boolean& createdNew, SECURITY_ATTRIBUTES
> secAttrs)
> at System.Threading.Mutex..ctor(Boolean initiallyOwned, String name,
> Boolean& createdNew, MutexSecurity mutexSecurity)
> at System.Threading.Mutex..ctor(Boolean initiallyOwned, String name,
> Boolean& createdNew)
> at log4net.Appender.RollingFileAppender.ActivateOptions()
> at Base.Logging.AzureFileLogAppender.ActivateOptions() in
> j:\Source\Commons\Logging\AzureFileLogAppender.cs:line 95
> at
> log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement
> appenderElement)
> {code}
> This affects the w3wp process of the web role. A consequence of this is that
> file logging isn't working for that process. We didn't have that exception
> with log4net 1.2.13 and recognized there was a change in 1.2.14 in
> RollingFileAppender.ActivateOptions: A mutex is created there and that seems
> to lead to the mentioned exception.
> Can you tell us whether it is likely that this issue was already fixed with
> 1.2.15? And if so, when will this version be available via Nuget package?
> Thank you!
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