asp.net-mvc - RavenDB部署问题

Question

我有一个自己开发的ASP.Net MVC 3应用程序，它使用RavenDB Embedded作为数据的集成后备存储，我使用this教程作为开始使用RavenDB Embedded创建MVC应用程序的基础。我已经能够在开发PC上很好地运行它，但是当需要在运行IIS6的Windows Server 2003 Web服务器上部署它时，它抛出了以下错误:

Cannot access file, the file is locked or in use Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: Microsoft.Isam.Esent.Interop.EsentFileAccessDeniedException: Cannot access file, the file is locked or in use

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[EsentFileAccessDeniedException: Cannot access file, the file is locked or in use] Microsoft.Isam.Esent.Interop.Api.Check(Int32 err) in C:\Work\ravendb\SharedLibs\Sources\managedesent-61618\EsentInterop\Api.cs:2736 Raven.Storage.Esent.TransactionalStorage.Initialize(IUuidGenerator uuidGenerator) in c:\Builds\RavenDB-Stable\Raven.Storage.Esent\TransactionalStorage.cs:207

[InvalidOperationException: Could not open transactional storage: C:\inetpub\wwwroot\MyApp\App_Data\Database\RavenDB\Data]
Raven.Storage.Esent.TransactionalStorage.Initialize(IUuidGenerator uuidGenerator) in c:\Builds\RavenDB-Stable\Raven.Storage.Esent\TransactionalStorage.cs:222 Raven.Database.DocumentDatabase..ctor(InMemoryRavenConfiguration configuration) in c:\Builds\RavenDB-Stable\Raven.Database\DocumentDatabase.cs:185
Raven.Client.Embedded.EmbeddableDocumentStore.InitializeInternal() in c:\Builds\RavenDB-Stable\Raven.Client.Embedded\EmbeddableDocumentStore.cs:143 Raven.Client.Document.DocumentStore.Initialize() in c:\Builds\RavenDB-Stable\Raven.Client.Lightweight\Document\DocumentStore.cs:496 MyApp.CompositionRoot.CreateControllerFactory() in ...\MyApp\CompositionRoot.cs:36 MyApp.CompositionRoot..ctor() in ..\MyApp\CompositionRoot.cs:17
MyApp.MvcApplication.Application_Start() in ...MyApp\Global.asax.cs:38

[HttpException (0x80004005): Could not open transactional storage: C:\inetpub\wwwroot\MyApp\App_Data\Database\RavenDB\Data]
System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) +3985477
System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +191
System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +325
System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +407
System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +375

[HttpException (0x80004005): Could not open transactional storage: C:\inetpub\wwwroot\MyApp\App_Data\Database\RavenDB\Data]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +11524352 System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +141 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +4782309

所引用的CompositionRoot.cs类中的错误源是初始化可嵌入文档存储时。

private static IControllerFactory CreateControllerFactory()
{
    var cacheRepository = new EmbeddableDocumentStore();
    cacheRepository.ConnectionStringName = "RavenDB";

    #if DEBUG
        cacheRepository.UseEmbeddedHttpServer = true;
    #endif

    Raven.Database.Server.NonAdminHttp.EnsureCanListenToWhenInNonAdminContext(8080);
    cacheRepository.Initialize(); //Source of Error
    var controllerFactory = new TDRControllerFactory(cacheRepository);
    return controllerFactory;
}

为什么这只会在Web服务器上发生而在我的开发PC上却没有发生？我不确定确切原因可能是什么。任何帮助表示赞赏。

Answer 1

原来这是一个权限问题，我给IIS_IUSRS组修改和写入应用程序文件夹根目录的权限，并赋予它正确初始化数据库所需的权限。根目录中可能有一个需要修改/写入权限的特定文件夹(在我的情况下，可能是App_Data文件夹，因为这是我实例化RavenDB实例的位置)。我将不得不进行测试，因为我不希望任何用户对整个应用程序文件夹具有修改/写入权限。