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Date: Tue, 15 Mar 2016 07:49:33 +0000 (UTC)
From: "Dominik Psenner (JIRA)" <jira@apache.org>
To: log4net-dev@logging.apache.org
Message-ID: <JIRA.12944936.1456503906000.17967.1458028173533@Atlassian.JIRA>
In-Reply-To: <JIRA.12944936.1456503906000@Atlassian.JIRA>
References: <JIRA.12944936.1456503906000@Atlassian.JIRA>
 <JIRA.12944936.1456503906319@arcas>
Subject: [jira] [Assigned] (LOG4NET-506) RollingFileAppender locking log
 folder in some cases
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     [ https://issues.apache.org/jira/browse/LOG4NET-506?page=3Dcom.atlassi=
an.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dominik Psenner reassigned LOG4NET-506:
---------------------------------------

    Assignee: Dominik Psenner

> RollingFileAppender locking log folder in some cases
> ----------------------------------------------------
>
>                 Key: LOG4NET-506
>                 URL: https://issues.apache.org/jira/browse/LOG4NET-506
>             Project: Log4net
>          Issue Type: Bug
>          Components: Appenders
>    Affects Versions: 1.2.15
>         Environment: Windows Server 2008 R2, Windows Server 2012 R2
>            Reporter: Fr=C3=A9d=C3=A9ric Delaporte
>            Assignee: Dominik Psenner
>            Priority: Minor
>         Attachments: AppAlone_log4net.txt, AppConcurrently_log4net.txt
>
>
> *Abstract:*
> In some configuration cases, the rolling file appender may issue a mutex =
lock on the folder name. If more than one processes try to do that with dif=
ferent executing identity, only one will be able to log to its specific log=
s file. The others will no more be able to do it.
> *Repro:*
> Many applications run on the same server.
> All run under different windows identity.
> All do log through {{RollingFileAppender}} to D:\Logs\ (value of {{file}}=
 configuration node) to their own file log (filename specific to each appli=
cation through {{datePattern}} configuration node, like {{yyyy.MM.dd'-App1.=
log'}}, {{yyyy.MM.dd'-App2.log'}}, ...).
> They log through {{AdoNetAppender}} too.
> Since having upgraded Log4Net from 1.2.13 to 1.2.15 on some applications,=
 they cease being able to all log to D:\Logs\. Only one of them still do lo=
g, depending on which have started first. SQL logs still work. Non upgraded=
 applications are still able to log to D:\Logs\, whatever their start order=
 have been.
> *Diagnosis info:*
> Activating log4net debug trace on an application, and comparing failure c=
ases to working cases, yields following diff:
> {code:title=3Dfailing case debug trace}
> log4net:ERROR Could not create Appender [RollingLogFileAppender] of type =
[log4net.Appender.RollingFileAppender]. Reported error follows.
> System.UnauthorizedAccessException: Access to path 'D__Logs_' denied. (Tr=
anslated from french)
>    =C3=A0 System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullP=
ath)
>    =C3=A0 System.Threading.Mutex.MutexTryCodeHelper.MutexTryCode(Object u=
serData)
>    =C3=A0 System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithG=
uaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
>    =C3=A0=C2=A0 System.Threading.Mutex.CreateMutexWithGuaranteedCleanup(B=
oolean initiallyOwned, String name, Boolean& createdNew, SECURITY_ATTRIBUTE=
S secAttrs)
>    =C3=A0=C2=A0 System.Threading.Mutex..ctor(Boolean initiallyOwned, Stri=
ng name, Boolean& createdNew, MutexSecurity mutexSecurity)
>    =C3=A0=C2=A0 System.Threading.Mutex..ctor(Boolean initiallyOwned, Stri=
ng name, Boolean& createdNew)
>    =C3=A0=C2=A0 log4net.Appender.RollingFileAppender.ActivateOptions()
>    =C3=A0=C2=A0 log4net.Repository.Hierarchy.XmlHierarchyConfigurator.Par=
seAppender(XmlElement appenderElement)
> log4net:ERROR Appender named [RollingLogFileAppender] not found.
> {code}
> {code:title=3Dworking case corresponding trace}
> log4net: Searched for existing files in [D:\Logs]
> log4net: curSizeRollBackups starts at [0]
> log4net: Opening file for writing [D:\Logs\2016.02.26-App1.log] append [T=
rue]
> log4net: Created Appender [RollingLogFileAppender]
> log4net: Adding appender named [RollingLogFileAppender] to logger [root].
> {code}
> (All other trace lines are identical)
> {code:xml|title=3DApplication appender configuration}
>   <appender name=3D"RollingLogFileAppender" type=3D"log4net.Appender.Roll=
ingFileAppender">
>     <file value=3D"D:\Logs\" />
>     <datePattern value=3D"yyyy.MM.dd'-App1.log'" />
>     <staticLogFileName value=3D"false" />
>     <appendToFile value=3D"true" />
>     <rollingStyle value=3D"Composite" />
>     <maxSizeRollBackups value=3D"10" />
>     <maximumFileSize value=3D"5MB" />
>     <layout type=3D"log4net.Layout.PatternLayout">
>       <conversionPattern value=3D"%date [%thread] %-5level %logger - %mes=
sage - %property%newline%exception" />
>     </layout>
>   </appender>
> {code}


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