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• Query optimization using composite indexes

  - by xmarch

  Many times, during the process of creating a new Coherence application, developers do not pay attention to the way cache queries are constructed; they only check that these queries comply with functional specs. Later, performance testing shows that these perform poorly and it is then when developers start working on improvements until the non-functional performance requirements are met. This post describes the optimization process of a real-life scenario, where using a composite attribute index has brought a radical improvement in query execution times.  The execution times went down from 4 seconds to 2 milliseconds! E-commerce solution based on Oracle ATG – Endeca In the context of a new e-commerce solution based on Oracle ATG – Endeca, Oracle Coherence has been used to calculate and store SKU prices. In this architecture, a Coherence cache stores the final SKU prices used for Endeca baseline indexing. Each SKU price is calculated from a base SKU price and a series of calculations based on information from corporate global discounts. Corporate global discounts information is stored in an auxiliary Coherence cache with over 800.000 entries. In particular, to obtain each price the process needs to execute six queries over the global discount cache. After the implementation was finished, we discovered that the most expensive steps in the price calculation discount process were the global discounts cache query. This query has 10 parameters and is executed 6 times for each SKU price calculation. The steps taken to optimise this query are described below; Starting point Initial query was: String filter = "levelId = :iLevelId AND  salesCompanyId = :iSalesCompanyId AND salesChannelId = :iSalesChannelId "+ "AND departmentId = :iDepartmentId AND familyId = :iFamilyId AND brand = :iBrand AND manufacturer = :iManufacturer "+ "AND areaId = :iAreaId AND endDate >=  :iEndDate AND startDate <= :iStartDate"; Map<String, Object> params = new HashMap<String, Object>(10); // Fill all parameters. params.put("iLevelId", xxxx); // Executing filter. Filter globalDiscountsFilter = QueryHelper.createFilter(filter, params); NamedCache globalDiscountsCache = CacheFactory.getCache(CacheConstants.GLOBAL_DISCOUNTS_CACHE_NAME); Set applicableDiscounts = globalDiscountsCache.entrySet(globalDiscountsFilter); With the small dataset used for development the cache queries performed very well. However, when carrying out performance testing with a real-world sample size of 800,000 entries, each query execution was taking more than 4 seconds. First round of optimizations The first optimisation step was the creation of separate Coherence index for each of the 10 attributes used by the filter. This avoided object deserialization while executing the query. Each index was created as follows: globalDiscountsCache.addIndex(new ReflectionExtractor("getXXX" ) , false, null); After adding these indexes the query execution time was reduced to between 450 ms and 1s. However, these execution times were still not good enough.  Second round of optimizations In this optimisation phase a Coherence query explain plan was used to identify how many entires each index reduced the results set by, along with the cost in ms of executing that part of the query. Though the explain plan showed that all the indexes for the query were being used, it also showed that the ordering of the query parameters was "sub-optimal".  Parameters associated to object attributes with high-cardinality should appear at the beginning of the filter, or more specifically, the attributes that filters out the highest of number records should be placed at the beginning. But examining corporate global discount data we realized that depending on the values of the parameters used in the query the “good” order for the attributes was different. In particular, if the attributes brand and family had specific values it was more optimal to have a different query changing the order of the attributes. Ultimately, we ended up with three different optimal variants of the query that were used in its relevant cases: String filter = "brand = :iBrand AND familyId = :iFamilyId AND departmentId = :iDepartmentId AND levelId = :iLevelId "+ "AND manufacturer = :iManufacturer AND endDate >= :iEndDate AND salesCompanyId = :iSalesCompanyId "+ "AND areaId = :iAreaId AND salesChannelId = :iSalesChannelId AND startDate <= :iStartDate"; String filter = "familyId = :iFamilyId AND departmentId = :iDepartmentId AND levelId = :iLevelId AND brand = :iBrand "+ "AND manufacturer = :iManufacturer AND endDate >=  :iEndDate AND salesCompanyId = :iSalesCompanyId "+ "AND areaId = :iAreaId  AND salesChannelId = :iSalesChannelId AND startDate <= :iStartDate"; String filter = "brand = :iBrand AND departmentId = :iDepartmentId AND familyId = :iFamilyId AND levelId = :iLevelId "+ "AND manufacturer = :iManufacturer AND endDate >= :iEndDate AND salesCompanyId = :iSalesCompanyId "+ "AND areaId = :iAreaId AND salesChannelId = :iSalesChannelId AND startDate <= :iStartDate"; Using the appropriate query depending on the value of brand and family parameters the query execution time dropped to between 100 ms and 150 ms. But these these execution times were still not good enough and the solution was cumbersome. Third and last round of optimizations The third and final optimization was to introduce a composite index. However, this did mean that it was not possible to use the Coherence Query Language (CohQL), as composite indexes are not currently supporte in CohQL. As the original query had 8 parameters using EqualsFilter, 1 using GreaterEqualsFilter and 1 using LessEqualsFilter, the composite index was built for the 8 attributes using EqualsFilter. The final query had an EqualsFilter for the multiple extractor, a GreaterEqualsFilter and a LessEqualsFilter for the 2 remaining attributes.  All individual indexes were dropped except the ones being used for LessEqualsFilter and GreaterEqualsFilter. We were now running in an scenario with an 8-attributes composite filter and 2 single attribute filters. The composite index created was as follows: ValueExtractor[] ve = { new ReflectionExtractor("getSalesChannelId" ), new ReflectionExtractor("getLevelId" ),    new ReflectionExtractor("getAreaId" ), new ReflectionExtractor("getDepartmentId" ),    new ReflectionExtractor("getFamilyId" ), new ReflectionExtractor("getManufacturer" ),    new ReflectionExtractor("getBrand" ), new ReflectionExtractor("getSalesCompanyId" )}; MultiExtractor me = new MultiExtractor(ve); NamedCache globalDiscountsCache = CacheFactory.getCache(CacheConstants.GLOBAL_DISCOUNTS_CACHE_NAME); globalDiscountsCache.addIndex(me, false, null); And the final query was: ValueExtractor[] ve = { new ReflectionExtractor("getSalesChannelId" ), new ReflectionExtractor("getLevelId" ),    new ReflectionExtractor("getAreaId" ), new ReflectionExtractor("getDepartmentId" ),    new ReflectionExtractor("getFamilyId" ), new ReflectionExtractor("getManufacturer" ),    new ReflectionExtractor("getBrand" ), new ReflectionExtractor("getSalesCompanyId" )}; MultiExtractor me = new MultiExtractor(ve); // Fill composite parameters.String SalesCompanyId = xxxx;...AndFilter composite = new AndFilter(new EqualsFilter(me,                   Arrays.asList(iSalesChannelId, iLevelId, iAreaId, iDepartmentId, iFamilyId, iManufacturer, iBrand, SalesCompanyId)),                                     new GreaterEqualsFilter(new ReflectionExtractor("getEndDate" ), iEndDate)); AndFilter finalFilter = new AndFilter(composite, new LessEqualsFilter(new ReflectionExtractor("getStartDate" ), iStartDate)); NamedCache globalDiscountsCache = CacheFactory.getCache(CacheConstants.GLOBAL_DISCOUNTS_CACHE_NAME); Set applicableDiscounts = globalDiscountsCache.entrySet(finalFilter);      Using this composite index the query improved dramatically and the execution time dropped to between 2 ms and  4 ms.  These execution times completely met the non-functional performance requirements . It should be noticed than when using the composite index the order of the attributes inside the ValueExtractor was not relevant.

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• After juju deploy : [Errno 2] No such file or directory

  - by user84471

  I get this after juju deploy. hsf@ubuntuserver:~$ juju deploy wordpress 2012-10-23 13:12:15,663 INFO Searching for charm cs:precise/wordpress in charm store [Errno 2] No such file or directory: '/home/hsf/.juju/cache/downloads/cs_3a_precise_2f_wordpress-9.charmGLg7sI.part' 2012-10-23 13:12:16,075 ERROR [Errno 2] No such file or directory: '/home/hsf/.juju/cache/downloads/cs_3a_precise_2f_wordpress-9.charmGLg7sI.part' I am using Ubuntu 12.04 server.

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• SharePoint 2010 HierarchicalConfig Caching Problem

  - by Damon

  We've started using the Application Foundations for SharePoint 2010 in some of our projects at work, and I came across a nasty issue with the hierarchical configuration settings.  I have some settings that I am storing at the Farm level, and as I was testing my code it seemed like the settings were not being saved - at least that is what it appeared was the case at first.  However, I happened to reset IIS and the settings suddenly appeared.  Immediately, I figured that it must be a caching issue and dug into the code base.  I found that there was a 10 second caching mechanism in the SPFarmPropertyBag and the SPWebAppPropertyBag classes.  So I ran another test where I waited 10 seconds to make sure that enough time had passed to force the caching mechanism to reset the data.  After 10 minutes the cache had still not cleared.  After digging a bit further, I found a double lock check that looked a bit off in the GetSettingsStore() method of the SPFarmPropertyBag class: if (_settingStore == null || (DateTime.Now.Subtract(lastLoad).TotalSeconds) > cacheInterval)) { //Need to exist so don't deadlock. rrLock.EnterWriteLock(); try { //make sure first another thread didn't already load... if (_settingStore == null) { _settingStore = WebAppSettingStore.Load(this.webApplication); lastLoad = DateTime.Now; } } finally { rrLock.ExitWriteLock(); } } What ends up happening here is the outer check determines if the _settingStore is null or the cache has expired, but the inner check is just checking if the _settingStore is null (which is never the case after the first time it's been loaded).  Ergo, the cached settings are never reset.  The fix is really easy, just add the cache checking back into the inner if statement. //make sure first another thread didn't already load... if (_settingStore == null || (DateTime.Now.Subtract(lastLoad).TotalSeconds) > cacheInterval) { _settingStore = WebAppSettingStore.Load(this.webApplication); lastLoad = DateTime.Now; } And then it starts working just fine. as long as you wait at least 10 seconds for the cache to clear.

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• RTMPDUMPTV problem

  - by ranavita

  (Reading database ... 459988 files and directories currently installed.) Unpacking librtmp-dev (from .../librtmp-dev_2.4~20110711.gitc28f1bab-1_amd64.deb) ... dpkg: error processing /var/cache/apt/archives/librtmp-dev_2.4~20110711.gitc28f1bab-1_amd64.deb (--unpack): trying to overwrite '/usr/include/librtmp/amf.h', which is also in package rtmpdump 2.5-0ubuntu2~precise Errors were encountered while processing: /var/cache/apt/archives/librtmp-dev_2.4~20110711.gitc28f1bab-1_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) above error code results after running sudo apt-get install -f A I am trying to fix the broken package of rtmptv

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• After upgrading to 13.10, no applications are visible in the application lens

  - by moeso

  I upgraded from 13.04 to 13.10 and now all icons in the application lens are gone. This is what I tried so far: apt-get install --reinstall unity-lens-applications unity --replace and unity --reset-icons moving ~/.config to ~/.config2 deleting ~/.cache/software-center and ~/.cache/unity Most of these things have been suggested in this question: Unity Applications lens is empty - but all to no avail.

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• ???????/???Web????????????!??????????????

  - by Yusuke.Yamamoto

  ????? ??:2010/11/04 ??:??????/?? ???????????????????·????????????????????????????????????????????????????????Web?????????????????????????????????????????????????????DB?? Oracle TimesTen In-Memory Database ???????????????????????????? ????????????????????????Oracle In-Memory Database Cache ?????Oracle TimesTen IMDB / Oracle IMDB Cache 11g ?????????? ????????? ????????????????? http://otndnld.oracle.co.jp/ondemand/otn-seminar/movie/TT11041100.wmv http://www.oracle.com/technology/global/jp/ondemand/otn-seminar/pdf/TimesTen_OrD_20101104_print.pdf

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• Custom ASP.NET Routing to an HttpHandler

  - by Rick Strahl

  As of version 4.0 ASP.NET natively supports routing via the now built-in System.Web.Routing namespace. Routing features are automatically integrated into the HtttpRuntime via a few custom interfaces. New Web Forms Routing Support In ASP.NET 4.0 there are a host of improvements including routing support baked into Web Forms via a RouteData property available on the Page class and RouteCollection.MapPageRoute() route handler that makes it easy to route to Web forms. To map ASP.NET Page routes is as simple as setting up the routes with MapPageRoute:protected void Application_Start(object sender, EventArgs e) { RegisterRoutes(RouteTable.Routes); } void RegisterRoutes(RouteCollection routes) { routes.MapPageRoute("StockQuote", "StockQuote/{symbol}", "StockQuote.aspx"); routes.MapPageRoute("StockQuotes", "StockQuotes/{symbolList}", "StockQuotes.aspx"); } and then accessing the route data in the page you can then use the new Page class RouteData property to retrieve the dynamic route data information:public partial class StockQuote1 : System.Web.UI.Page { protected StockQuote Quote = null; protected void Page_Load(object sender, EventArgs e) { string symbol = RouteData.Values["symbol"] as string; StockServer server = new StockServer(); Quote = server.GetStockQuote(symbol); // display stock data in Page View } } Simple, quick and doesn’t require much explanation. If you’re using WebForms most of your routing needs should be served just fine by this simple mechanism. Kudos to the ASP.NET team for putting this in the box and making it easy! How Routing Works To handle Routing in ASP.NET involves these steps: Registering Routes Creating a custom RouteHandler to retrieve an HttpHandler Attaching RouteData to your HttpHandler Picking up Route Information in your Request code Registering routes makes ASP.NET aware of the Routes you want to handle via the static RouteTable.Routes collection. You basically add routes to this collection to let ASP.NET know which URL patterns it should watch for. You typically hook up routes off a RegisterRoutes method that fires in Application_Start as I did in the example above to ensure routes are added only once when the application first starts up. When you create a route, you pass in a RouteHandler instance which ASP.NET caches and reuses as routes are matched. Once registered ASP.NET monitors the routes and if a match is found just prior to the HttpHandler instantiation, ASP.NET uses the RouteHandler registered for the route and calls GetHandler() on it to retrieve an HttpHandler instance. The RouteHandler.GetHandler() method is responsible for creating an instance of an HttpHandler that is to handle the request and – if necessary – to assign any additional custom data to the handler. At minimum you probably want to pass the RouteData to the handler so the handler can identify the request based on the route data available. To do this you typically add  a RouteData property to your handler and then assign the property from the RouteHandlers request context. This is essentially how Page.RouteData comes into being and this approach should work well for any custom handler implementation that requires RouteData. It’s a shame that ASP.NET doesn’t have a top level intrinsic object that’s accessible off the HttpContext object to provide route data more generically, but since RouteData is directly tied to HttpHandlers and not all handlers support it it might cause some confusion of when it’s actually available. Bottom line is that if you want to hold on to RouteData you have to assign it to a custom property of the handler or else pass it to the handler via Context.Items[] object that can be retrieved on an as needed basis. It’s important to understand that routing is hooked up via RouteHandlers that are responsible for loading HttpHandler instances. RouteHandlers are invoked for every request that matches a route and through this RouteHandler instance the Handler gains access to the current RouteData. Because of this logic it’s important to understand that Routing is really tied to HttpHandlers and not available prior to handler instantiation, which is pretty late in the HttpRuntime’s request pipeline. IOW, Routing works with Handlers but not with earlier in the pipeline within Modules. Specifically ASP.NET calls RouteHandler.GetHandler() from the PostResolveRequestCache HttpRuntime pipeline event. Here’s the call stack at the beginning of the GetHandler() call: which fires just before handler resolution. Non-Page Routing – You need to build custom RouteHandlers If you need to route to a custom Http Handler or other non-Page (and non-MVC) endpoint in the HttpRuntime, there is no generic mapping support available. You need to create a custom RouteHandler that can manage creating an instance of an HttpHandler that is fired in response to a routed request. Depending on what you are doing this process can be simple or fairly involved as your code is responsible based on the route data provided which handler to instantiate, and more importantly how to pass the route data on to the Handler. Luckily creating a RouteHandler is easy by implementing the IRouteHandler interface which has only a single GetHttpHandler(RequestContext context) method. In this method you can pick up the requestContext.RouteData, instantiate the HttpHandler of choice, and assign the RouteData to it. Then pass back the handler and you’re done.Here’s a simple example of GetHttpHandler() method that dynamically creates a handler based on a passed in Handler type./// <summary> /// Retrieves an Http Handler based on the type specified in the constructor /// </summary> /// <param name="requestContext"></param> /// <returns></returns> IHttpHandler IRouteHandler.GetHttpHandler(RequestContext requestContext) { IHttpHandler handler = Activator.CreateInstance(CallbackHandlerType) as IHttpHandler; // If we're dealing with a Callback Handler // pass the RouteData for this route to the Handler if (handler is CallbackHandler) ((CallbackHandler)handler).RouteData = requestContext.RouteData; return handler; } Note that this code checks for a specific type of handler and if it matches assigns the RouteData to this handler. This is optional but quite a common scenario if you want to work with RouteData. If the handler you need to instantiate isn’t under your control but you still need to pass RouteData to Handler code, an alternative is to pass the RouteData via the HttpContext.Items collection:IHttpHandler IRouteHandler.GetHttpHandler(RequestContext requestContext) { IHttpHandler handler = Activator.CreateInstance(CallbackHandlerType) as IHttpHandler; requestContext.HttpContext.Items["RouteData"] = requestContext.RouteData; return handler; } The code in the handler implementation can then pick up the RouteData from the context collection as needed:RouteData routeData = HttpContext.Current.Items["RouteData"] as RouteData This isn’t as clean as having an explicit RouteData property, but it does have the advantage that the route data is visible anywhere in the Handler’s code chain. It’s definitely preferable to create a custom property on your handler, but the Context work-around works in a pinch when you don’t’ own the handler code and have dynamic code executing as part of the handler execution. An Example of a Custom RouteHandler: Attribute Based Route Implementation In this post I’m going to discuss a custom routine implementation I built for my CallbackHandler class in the West Wind Web & Ajax Toolkit. CallbackHandler can be very easily used for creating AJAX, REST and POX requests following RPC style method mapping. You can pass parameters via URL query string, POST data or raw data structures, and you can retrieve results as JSON, XML or raw string/binary data. It’s a quick and easy way to build service interfaces with no fuss. As a quick review here’s how CallbackHandler works: You create an Http Handler that derives from CallbackHandler You implement methods that have a [CallbackMethod] Attribute and that’s it. Here’s an example of an CallbackHandler implementation in an ashx.cs based handler:// RestService.ashx.cs public class RestService : CallbackHandler { [CallbackMethod] public StockQuote GetStockQuote(string symbol) { StockServer server = new StockServer(); return server.GetStockQuote(symbol); } [CallbackMethod] public StockQuote[] GetStockQuotes(string symbolList) { StockServer server = new StockServer(); string[] symbols = symbolList.Split(new char[2] { ',',';' },StringSplitOptions.RemoveEmptyEntries); return server.GetStockQuotes(symbols); } } CallbackHandler makes it super easy to create a method on the server, pass data to it via POST, QueryString or raw JSON/XML data, and then retrieve the results easily back in various formats. This works wonderful and I’ve used these tools in many projects for myself and with clients. But one thing missing has been the ability to create clean URLs. Typical URLs looked like this: http://www.west-wind.com/WestwindWebToolkit/samples/Rest/StockService.ashx?Method=GetStockQuote&symbol=msfthttp://www.west-wind.com/WestwindWebToolkit/samples/Rest/StockService.ashx?Method=GetStockQuotes&symbolList=msft,intc,gld,slw,mwe&format=xml which works and is clear enough, but also clearly very ugly. It would be much nicer if URLs could look like this: http://www.west-wind.com//WestwindWebtoolkit/Samples/StockQuote/msfthttp://www.west-wind.com/WestwindWebtoolkit/Samples/StockQuotes/msft,intc,gld,slw?format=xml (the Virtual Root in this sample is WestWindWebToolkit/Samples and StockQuote/{symbol} is the route)(If you use FireFox try using the JSONView plug-in make it easier to view JSON content) So, taking a clue from the WCF REST tools that use RouteUrls I set out to create a way to specify RouteUrls for each of the endpoints. The change made basically allows changing the above to: [CallbackMethod(RouteUrl="RestService/StockQuote/{symbol}")] public StockQuote GetStockQuote(string symbol) { StockServer server = new StockServer(); return server.GetStockQuote(symbol); } [CallbackMethod(RouteUrl = "RestService/StockQuotes/{symbolList}")] public StockQuote[] GetStockQuotes(string symbolList) { StockServer server = new StockServer(); string[] symbols = symbolList.Split(new char[2] { ',',';' },StringSplitOptions.RemoveEmptyEntries); return server.GetStockQuotes(symbols); } where a RouteUrl is specified as part of the Callback attribute. And with the changes made with RouteUrls I can now get URLs like the second set shown earlier. So how does that work? Let’s find out… How to Create Custom Routes As mentioned earlier Routing is made up of several steps: Creating a custom RouteHandler to create HttpHandler instances Mapping the actual Routes to the RouteHandler Retrieving the RouteData and actually doing something useful with it in the HttpHandler In the CallbackHandler routing example above this works out to something like this: Create a custom RouteHandler that includes a property to track the method to call Set up the routes using Reflection against the class Looking for any RouteUrls in the CallbackMethod attribute Add a RouteData property to the CallbackHandler so we can access the RouteData in the code of the handler Creating a Custom Route Handler To make the above work I created a custom RouteHandler class that includes the actual IRouteHandler implementation as well as a generic and static method to automatically register all routes marked with the [CallbackMethod(RouteUrl="…")] attribute. Here’s the code:/// <summary> /// Route handler that can create instances of CallbackHandler derived /// callback classes. The route handler tracks the method name and /// creates an instance of the service in a predictable manner /// </summary> /// <typeparam name="TCallbackHandler">CallbackHandler type</typeparam> public class CallbackHandlerRouteHandler : IRouteHandler { /// <summary> /// Method name that is to be called on this route. /// Set by the automatically generated RegisterRoutes /// invokation. /// </summary> public string MethodName { get; set; } /// <summary> /// The type of the handler we're going to instantiate. /// Needed so we can semi-generically instantiate the /// handler and call the method on it. /// </summary> public Type CallbackHandlerType { get; set; } /// <summary> /// Constructor to pass in the two required components we /// need to create an instance of our handler. /// </summary> /// <param name="methodName"></param> /// <param name="callbackHandlerType"></param> public CallbackHandlerRouteHandler(string methodName, Type callbackHandlerType) { MethodName = methodName; CallbackHandlerType = callbackHandlerType; } /// <summary> /// Retrieves an Http Handler based on the type specified in the constructor /// </summary> /// <param name="requestContext"></param> /// <returns></returns> IHttpHandler IRouteHandler.GetHttpHandler(RequestContext requestContext) { IHttpHandler handler = Activator.CreateInstance(CallbackHandlerType) as IHttpHandler; // If we're dealing with a Callback Handler // pass the RouteData for this route to the Handler if (handler is CallbackHandler) ((CallbackHandler)handler).RouteData = requestContext.RouteData; return handler; } /// <summary> /// Generic method to register all routes from a CallbackHandler /// that have RouteUrls defined on the [CallbackMethod] attribute /// </summary> /// <typeparam name="TCallbackHandler">CallbackHandler Type</typeparam> /// <param name="routes"></param> public static void RegisterRoutes<TCallbackHandler>(RouteCollection routes) { // find all methods var methods = typeof(TCallbackHandler).GetMethods(BindingFlags.Instance | BindingFlags.Public); foreach (var method in methods) { var attrs = method.GetCustomAttributes(typeof(CallbackMethodAttribute), false); if (attrs.Length < 1) continue; CallbackMethodAttribute attr = attrs[0] as CallbackMethodAttribute; if (string.IsNullOrEmpty(attr.RouteUrl)) continue; // Add the route routes.Add(method.Name, new Route(attr.RouteUrl, new CallbackHandlerRouteHandler(method.Name, typeof(TCallbackHandler)))); } } } The RouteHandler implements IRouteHandler, and its responsibility via the GetHandler method is to create an HttpHandler based on the route data. When ASP.NET calls GetHandler it passes a requestContext parameter which includes a requestContext.RouteData property. This parameter holds the current request’s route data as well as an instance of the current RouteHandler. If you look at GetHttpHandler() you can see that the code creates an instance of the handler we are interested in and then sets the RouteData property on the handler. This is how you can pass the current request’s RouteData to the handler. The RouteData object also has a  RouteData.RouteHandler property that is also available to the Handler later, which is useful in order to get additional information about the current route. In our case here the RouteHandler includes a MethodName property that identifies the method to execute in the handler since that value no longer comes from the URL so we need to figure out the method name some other way. The method name is mapped explicitly when the RouteHandler is created and here the static method that auto-registers all CallbackMethods with RouteUrls sets the method name when it creates the routes while reflecting over the methods (more on this in a minute). The important point here is that you can attach additional properties to the RouteHandler and you can then later access the RouteHandler and its properties later in the Handler to pick up these custom values. This is a crucial feature in that the RouteHandler serves in passing additional context to the handler so it knows what actions to perform. The automatic route registration is handled by the static RegisterRoutes<TCallbackHandler> method. This method is generic and totally reusable for any CallbackHandler type handler. To register a CallbackHandler and any RouteUrls it has defined you simple use code like this in Application_Start (or other application startup code):protected void Application_Start(object sender, EventArgs e) { // Register Routes for RestService CallbackHandlerRouteHandler.RegisterRoutes<RestService>(RouteTable.Routes); } If you have multiple CallbackHandler style services you can make multiple calls to RegisterRoutes for each of the service types. RegisterRoutes internally uses reflection to run through all the methods of the Handler, looking for CallbackMethod attributes and whether a RouteUrl is specified. If it is a new instance of a CallbackHandlerRouteHandler is created and the name of the method and the type are set. routes.Add(method.Name,           new Route(attr.RouteUrl, new CallbackHandlerRouteHandler(method.Name, typeof(TCallbackHandler) )) ); While the routing with CallbackHandlerRouteHandler is set up automatically for all methods that use the RouteUrl attribute, you can also use code to hook up those routes manually and skip using the attribute. The code for this is straightforward and just requires that you manually map each individual route to each method you want a routed: protected void Application_Start(objectsender, EventArgs e){    RegisterRoutes(RouteTable.Routes);}void RegisterRoutes(RouteCollection routes) { routes.Add("StockQuote Route",new Route("StockQuote/{symbol}",                     new CallbackHandlerRouteHandler("GetStockQuote",typeof(RestService) ) ) );     routes.Add("StockQuotes Route",new Route("StockQuotes/{symbolList}",                     new CallbackHandlerRouteHandler("GetStockQuotes",typeof(RestService) ) ) );}I think it’s clearly easier to have CallbackHandlerRouteHandler.RegisterRoutes() do this automatically for you based on RouteUrl attributes, but some people have a real aversion to attaching logic via attributes. Just realize that the option to manually create your routes is available as well. Using the RouteData in the Handler A RouteHandler’s responsibility is to create an HttpHandler and as mentioned earlier, natively IHttpHandler doesn’t have any support for RouteData. In order to utilize RouteData in your handler code you have to pass the RouteData to the handler. In my CallbackHandlerRouteHandler when it creates the HttpHandler instance it creates the instance and then assigns the custom RouteData property on the handler:IHttpHandler handler = Activator.CreateInstance(CallbackHandlerType) as IHttpHandler; if (handler is CallbackHandler) ((CallbackHandler)handler).RouteData = requestContext.RouteData; return handler; Again this only works if you actually add a RouteData property to your handler explicitly as I did in my CallbackHandler implementation:/// <summary> /// Optionally store RouteData on this handler /// so we can access it internally /// </summary> public RouteData RouteData {get; set; } and the RouteHandler needs to set it when it creates the handler instance. Once you have the route data in your handler you can access Route Keys and Values and also the RouteHandler. Since my RouteHandler has a custom property for the MethodName to retrieve it from within the handler I can do something like this now to retrieve the MethodName (this example is actually not in the handler but target is an instance pass to the processor): // check for Route Data method name if (target is CallbackHandler) { var routeData = ((CallbackHandler)target).RouteData; if (routeData != null) methodToCall = ((CallbackHandlerRouteHandler)routeData.RouteHandler).MethodName; } When I need to access the dynamic values in the route ( symbol in StockQuote/{symbol}) I can retrieve it easily with the Values collection (RouteData.Values["symbol"]). In my CallbackHandler processing logic I’m basically looking for matching parameter names to Route parameters: // look for parameters in the routeif(routeData != null){    string parmString = routeData.Values[parameter.Name] as string;    adjustedParms[parmCounter] = ReflectionUtils.StringToTypedValue(parmString, parameter.ParameterType);} And with that we’ve come full circle. We’ve created a custom RouteHandler() that passes the RouteData to the handler it creates. We’ve registered our routes to use the RouteHandler, and we’ve utilized the route data in our handler. For completeness sake here’s the routine that executes a method call based on the parameters passed in and one of the options is to retrieve the inbound parameters off RouteData (as well as from POST data or QueryString parameters):internal object ExecuteMethod(string method, object target, string[] parameters, CallbackMethodParameterType paramType, ref CallbackMethodAttribute callbackMethodAttribute) { HttpRequest Request = HttpContext.Current.Request; object Result = null; // Stores parsed parameters (from string JSON or QUeryString Values) object[] adjustedParms = null; Type PageType = target.GetType(); MethodInfo MI = PageType.GetMethod(method, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic); if (MI == null) throw new InvalidOperationException("Invalid Server Method."); object[] methods = MI.GetCustomAttributes(typeof(CallbackMethodAttribute), false); if (methods.Length < 1) throw new InvalidOperationException("Server method is not accessible due to missing CallbackMethod attribute"); if (callbackMethodAttribute != null) callbackMethodAttribute = methods[0] as CallbackMethodAttribute; ParameterInfo[] parms = MI.GetParameters(); JSONSerializer serializer = new JSONSerializer(); RouteData routeData = null; if (target is CallbackHandler) routeData = ((CallbackHandler)target).RouteData; int parmCounter = 0; adjustedParms = new object[parms.Length]; foreach (ParameterInfo parameter in parms) { // Retrieve parameters out of QueryString or POST buffer if (parameters == null) { // look for parameters in the route if (routeData != null) { string parmString = routeData.Values[parameter.Name] as string; adjustedParms[parmCounter] = ReflectionUtils.StringToTypedValue(parmString, parameter.ParameterType); } // GET parameter are parsed as plain string values - no JSON encoding else if (HttpContext.Current.Request.HttpMethod == "GET") { // Look up the parameter by name string parmString = Request.QueryString[parameter.Name]; adjustedParms[parmCounter] = ReflectionUtils.StringToTypedValue(parmString, parameter.ParameterType); } // POST parameters are treated as methodParameters that are JSON encoded else if (paramType == CallbackMethodParameterType.Json) //string newVariable = methodParameters.GetValue(parmCounter) as string; adjustedParms[parmCounter] = serializer.Deserialize(Request.Params["parm" + (parmCounter + 1).ToString()], parameter.ParameterType); else adjustedParms[parmCounter] = SerializationUtils.DeSerializeObject( Request.Params["parm" + (parmCounter + 1).ToString()], parameter.ParameterType); } else if (paramType == CallbackMethodParameterType.Json) adjustedParms[parmCounter] = serializer.Deserialize(parameters[parmCounter], parameter.ParameterType); else adjustedParms[parmCounter] = SerializationUtils.DeSerializeObject(parameters[parmCounter], parameter.ParameterType); parmCounter++; } Result = MI.Invoke(target, adjustedParms); return Result; } The code basically uses Reflection to loop through all the parameters available on the method and tries to assign the parameters from RouteData, QueryString or POST variables. The parameters are converted into their appropriate types and then used to eventually make a Reflection based method call. What’s sweet is that the RouteData retrieval is just another option for dealing with the inbound data in this scenario and it adds exactly two lines of code plus the code to retrieve the MethodName I showed previously – a seriously low impact addition that adds a lot of extra value to this endpoint callback processing implementation. Debugging your Routes If you create a lot of routes it’s easy to run into Route conflicts where multiple routes have the same path and overlap with each other. This can be difficult to debug especially if you are using automatically generated routes like the routes created by CallbackHandlerRouteHandler.RegisterRoutes. Luckily there’s a tool that can help you out with this nicely. Phill Haack created a RouteDebugging tool you can download and add to your project. The easiest way to do this is to grab and add this to your project is to use NuGet (Add Library Package from your Project’s Reference Nodes):   which adds a RouteDebug assembly to your project. Once installed you can easily debug your routes with this simple line of code which needs to be installed at application startup:protected void Application_Start(object sender, EventArgs e) { CallbackHandlerRouteHandler.RegisterRoutes<StockService>(RouteTable.Routes); // Debug your routes RouteDebug.RouteDebugger.RewriteRoutesForTesting(RouteTable.Routes); } Any routed URL then displays something like this: The screen shows you your current route data and all the routes that are mapped along with a flag that displays which route was actually matched. This is useful – if you have any overlap of routes you will be able to see which routes are triggered – the first one in the sequence wins. This tool has saved my ass on a few occasions – and with NuGet now it’s easy to add it to your project in a few seconds and then remove it when you’re done. Routing Around Custom routing seems slightly complicated on first blush due to its disconnected components of RouteHandler, route registration and mapping of custom handlers. But once you understand the relationship between a RouteHandler, the RouteData and how to pass it to a handler, utilizing of Routing becomes a lot easier as you can easily pass context from the registration to the RouteHandler and through to the HttpHandler. The most important thing to understand when building custom routing solutions is to figure out how to map URLs in such a way that the handler can figure out all the pieces it needs to process the request. This can be via URL routing parameters and as I did in my example by passing additional context information as part of the RouteHandler instance that provides the proper execution context. In my case this ‘context’ was the method name, but it could be an actual static value like an enum identifying an operation or category in an application. Basically user supplied data comes in through the url and static application internal data can be passed via RouteHandler property values. Routing can make your application URLs easier to read by non-techie types regardless of whether you’re building Service type or REST applications, or full on Web interfaces. Routing in ASP.NET 4.0 makes it possible to create just about any extensionless URLs you can dream up and custom RouteHanmdler References Sample ProjectIncludes the sample CallbackHandler service discussed here along with compiled versionsof the Westwind.Web and Westwind.Utilities assemblies.  (requires .NET 4.0/VS 2010) West Wind Web Toolkit includes full implementation of CallbackHandler and the Routing Handler West Wind Web Toolkit Source CodeContains the full source code to the Westwind.Web and Westwind.Utilities assemblies usedin these samples. Includes the source described in the post.(Latest build in the Subversion Repository) CallbackHandler Source(Relevant code to this article tree in Westwind.Web assembly) JSONView FireFoxPluginA simple FireFox Plugin to easily view JSON data natively in FireFox.For IE you can use a registry hack to display JSON as raw text.© Rick Strahl, West Wind Technologies, 2005-2011Posted in ASP.NET  AJAX  HTTP  

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• IIS 7.5 , Tomcat 7 - Isapi redirector - Fail Over - sticky sessions

  - by Jose Matias

  I have two instances of Tomcat 7.0.8 running in the same machine (Tomcat7A and Tomcat7B) and IIS 7.5 acting as front-end load-balancer with isapi-redirector 1.2.31, running on Windows 2008 R2. When i disconnect the instance wich is handling a request i can see a new instance being assigned with the same sessionid but then the user is redirected to the login page. server.xml configuration file <Engine name="Catalina" defaultHost="localhost" jvmRoute="Tomcat7A"> <Realm className="org.apache.catalina.realm.LockOutRealm"> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true"> <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="8"> <Manager className="org.apache.catalina.ha.session.DeltaManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true"/> <Channel className="org.apache.catalina.tribes.group.GroupChannel"> <Membership className="org.apache.catalina.tribes.membership.McastService" address="228.0.0.8" bind="7.3.1.22" port="45564" frequency="500" dropTime="3000"/> <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="auto" port="4200" autoBind="100" selectorTimeout="5000" maxThreads="6"/> <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/> </Sender> <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/> </Channel> <Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=".*\.gif;.*\.js;.*\.jpg;.*\.htm;.*\.html;.*\.txt"/> <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/> <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/> <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> </Cluster> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log." suffix=".txt" pattern="%h %l %u %t &quot;%r&quot; %s %b" resolveHosts="false"/> </Host> </Engine> worker_mount_file=C:\tomcat\iis\conf\uriworkermap_prod.properties worker.list = balancer,status worker.Tomcat7B.host = 7.3.1.22 worker.Tomcat7B.type = ajp13 worker.Tomcat7B.port = 8010 worker.Tomcat7B.lbfactor = 10 worker.Tomcat7A.host = 7.3.1.22 worker.Tomcat7A.type = ajp13 worker.Tomcat7A.port = 8009 worker.Tomcat7A.lbfactor = 10 worker.balancer.type = lb worker.balancer.sticky_session = 1 worker.balancer.balance_workers = Tomcat7B, Tomcat7A worker.status.type = status isapi_redirect log [debug] wc_get_worker_for_name::jk_worker.c (116): found a worker balancer [debug] HttpExtensionProc::jk_isapi_plugin.c (2188): got a worker for name balancer [debug] service::jk_lb_worker.c (1118): service sticky_session=1 id='89569C584CC4F58740D649C4BE655D36.Tomcat7B' [debug] get_most_suitable_worker::jk_lb_worker.c (946): searching worker for partial sessionid 89569C584CC4F58740D649C4BE655D36.Tomcat7B [debug] get_most_suitable_worker::jk_lb_worker.c (954): searching worker for session route Tomcat7B [debug] get_most_suitable_worker::jk_lb_worker.c (968): found worker Tomcat7B (Tomcat7B) for route Tomcat7B and partial sessionid 89569C584CC4F58740D649C4BE655D36.Tomcat7B [debug] service::jk_lb_worker.c (1161): service worker=Tomcat7B route=Tomcat7B [debug] ajp_get_endpoint::jk_ajp_common.c (3096): acquired connection pool slot=0 after 0 retries [debug] ajp_marshal_into_msgb::jk_ajp_common.c (605): ajp marshaling done [debug] ajp_service::jk_ajp_common.c (2379): processing Tomcat7B with 2 retries [debug] jk_shutdown_socket::jk_connect.c (726): About to shutdown socket 820 [7.3.1.22:24482 -> 7.3.1.22:8010] [debug] jk_shutdown_socket::jk_connect.c (797): shutting down the read side of socket 820 [7.3.1.22:24482 -> 7.3.1.22:8010] [debug] jk_shutdown_socket::jk_connect.c (808): Shutdown socket 820 [7.3.1.22:24482 -> 7.3.1.22:8010] and read 0 lingering bytes in 0 sec. [debug] ajp_send_request::jk_ajp_common.c (1496): (Tomcat7B) failed sending request, socket 820 is not connected any more (errno=-10000) [debug] ajp_next_connection::jk_ajp_common.c (823): (Tomcat7B) Will try pooled connection socket 896 from slot 1 [debug] jk_shutdown_socket::jk_connect.c (726): About to shutdown socket 896 [7.3.1.22:24488 -> 7.3.1.22:8010] [debug] jk_shutdown_socket::jk_connect.c (797): shutting down the read side of socket 896 [7.3.1.22:24488 -> 7.3.1.22:8010] [debug] jk_shutdown_socket::jk_connect.c (808): Shutdown socket 896 [7.3.1.22:24488 -> 7.3.1.22:8010] and read 0 lingering bytes in 0 sec. [debug] ajp_send_request::jk_ajp_common.c (1496): (Tomcat7B) failed sending request, socket 896 is not connected any more (errno=-10000) [info] ajp_send_request::jk_ajp_common.c (1567): (Tomcat7B) all endpoints are disconnected, detected by connect check (2), cping (0), send (0) [debug] jk_open_socket::jk_connect.c (484): socket TCP_NODELAY set to On [debug] jk_open_socket::jk_connect.c (608): trying to connect socket 896 to 7.3.1.22:8010 [info] jk_open_socket::jk_connect.c (626): connect to 7.3.1.22:8010 failed (errno=61) [info] ajp_connect_to_endpoint::jk_ajp_common.c (959): Failed opening socket to (7.3.1.22:8010) (errno=61) [error] ajp_send_request::jk_ajp_common.c (1578): (Tomcat7B) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=61) [info] ajp_service::jk_ajp_common.c (2543): (Tomcat7B) sending request to tomcat failed (recoverable), because of error during request sending (attempt=1) [debug] ajp_service::jk_ajp_common.c (2400): retry 1, sleeping for 100 ms before retrying [debug] ajp_send_request::jk_ajp_common.c (1572): (Tomcat7B) all endpoints are disconnected. [debug] jk_open_socket::jk_connect.c (484): socket TCP_NODELAY set to On [debug] jk_open_socket::jk_connect.c (608): trying to connect socket 896 to 7.3.1.22:8010 [info] jk_open_socket::jk_connect.c (626): connect to 7.3.1.22:8010 failed (errno=61) [info] ajp_connect_to_endpoint::jk_ajp_common.c (959): Failed opening socket to (7.3.1.22:8010) (errno=61) [error] ajp_send_request::jk_ajp_common.c (1578): (Tomcat7B) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=61) [info] ajp_service::jk_ajp_common.c (2543): (Tomcat7B) sending request to tomcat failed (recoverable), because of error during request sending (attempt=2) [error] ajp_service::jk_ajp_common.c (2562): (Tomcat7B) connecting to tomcat failed. [debug] ajp_reset_endpoint::jk_ajp_common.c (757): (Tomcat7B) resetting endpoint with socket -1 (socket shutdown) [debug] ajp_done::jk_ajp_common.c (3013): recycling connection pool slot=0 for worker Tomcat7B [debug] service::jk_lb_worker.c (1374): worker Tomcat7B escalating local error to global error [info] service::jk_lb_worker.c (1388): service failed, worker Tomcat7B is in error state [debug] service::jk_lb_worker.c (1399): recoverable error... will try to recover on other worker [debug] get_most_suitable_worker::jk_lb_worker.c (946): searching worker for partial sessionid 89569C584CC4F58740D649C4BE655D36.Tomcat7B [debug] get_most_suitable_worker::jk_lb_worker.c (954): searching worker for session route Tomcat7B [debug] get_most_suitable_worker::jk_lb_worker.c (1001): found best worker Tomcat7A (Tomcat7A) using method 'Request' [debug] service::jk_lb_worker.c (1161): service worker=Tomcat7A route=Tomcat7B [debug] ajp_get_endpoint::jk_ajp_common.c (3096): acquired connection pool slot=0 after 0 retries [debug] ajp_marshal_into_msgb::jk_ajp_common.c (605): ajp marshaling done [debug] ajp_service::jk_ajp_common.c (2379): processing Tomcat7A with 2 retries [debug] ajp_send_request::jk_ajp_common.c (1572): (Tomcat7A) all endpoints are disconnected. [debug] jk_open_socket::jk_connect.c (484): socket TCP_NODELAY set to On [debug] jk_open_socket::jk_connect.c (608): trying to connect socket 896 to 7.3.1.22:8009 [debug] jk_open_socket::jk_connect.c (634): socket 896 [7.3.1.22:24496 -> 7.3.1.22:8009] connected [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): sending to ajp13 pos=4 len=615 max=8192 [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0000 .4.c....HTTP/1.1 [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0010 .../Accounter/pr [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0020 intFrameSet.jhtm [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0030 l...::1...::1... [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0040 localhost..P.... [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0050 ...Keep-Alive... [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0060 ..0....rimage/jp [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0070 eg,.image/gif,.i [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0080 mage/pjpeg,.appl [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0090 ication/x-ms-app [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00a0 lication,.applic [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00b0 ation/xaml+xml,. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00c0 application/x-ms [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00d0 -xbap,.*/*...Acc [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00e0 ept-Encoding...g [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00f0 zip,.deflate...A [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0100 ccept-Language.. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0110 .nb-NO....]Usern [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0120 ame=NA_jose.mati [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0130 as_AT_addenergy. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0140 no;.JSESSIONID=8 [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0150 9569C584CC4F5874 [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0160 0D649C4BE655D36. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0170 Tomcat7B.....loc [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0180 alhost.....http: [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0190 //localhost/Acco [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01a0 unter/NemsAccoun [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01b0 ter.jhtml....uMo [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01c0 zilla/4.0.(compa [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01d0 tible;.MSIE.8.0; [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01e0 .Windows.NT.6.1; [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01f0 .WOW64;.Trident/ [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0200 4.0;.SLCC2;..NET [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0210 .CLR.2.0.50727;. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0220 .NET4.0C;..NET4. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0230 0E)............F [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0240 rameName=Reports [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0250 _CS_EUETS....Tom [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0260 cat7B........... [debug] ajp_send_request::jk_ajp_common.c (1632): (Tomcat7A) request body to send 0 - request body to resend 0 [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): received from ajp13 pos=0 len=238 max=8192 [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0000 .....Moved.Tempo [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0010 rarily......OJSE [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0020 SSIONID=6A2507A4 [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0030 626F698EC74A733C [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0040 DBA7D9FE.Tomcat7 [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0050 A;.Path=/Account [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0060 er;.HttpOnly...P [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0070 ragma...no-cache [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0080 ...Cache-Control [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0090 ...no-cache....& [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 00a0 http://localhost [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 00b0 /Accounter/login [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 00c0 .jhtml.....text/ [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 00d0 html;charset=ISO [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 00e0 -8859-1.....0... [debug] ajp_unmarshal_response::jk_ajp_common.c (660): status = 302 [debug] ajp_unmarshal_response::jk_ajp_common.c (667): Number of headers is = 6 [debug] ajp_unmarshal_response::jk_ajp_common.c (723): Header[0] [Set-Cookie] = [JSESSIONID=6A2507A4626F698EC74A733CDBA7D9FE.Tomcat7A; Path=/Accounter; HttpOnly] [debug] ajp_unmarshal_response::jk_ajp_common.c (723): Header[1] [Pragma] = [no-cache] [debug] ajp_unmarshal_response::jk_ajp_common.c (723): Header[2] [Cache-Control] = [no-cache] [debug] ajp_unmarshal_response::jk_ajp_common.c (723): Header[3] [Location] = [http://localhost/Accounter/login.jhtml] [debug] ajp_unmarshal_response::jk_ajp_common.c (723): Header[4] [Content-Type] = [text/html;charset=ISO-8859-1] [debug] ajp_unmarshal_response::jk_ajp_common.c (723): Header[5] [Content-Length] = [0] [debug] start_response::jk_isapi_plugin.c (963): Starting response for URI '/Accounter/printFrameSet.jhtml' (protocol HTTP/1.1) [debug] start_response::jk_isapi_plugin.c (1063): Not using Keep-Alive [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): received from ajp13 pos=0 len=2 max=8192 [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0000 ................ [debug] ajp_process_callback::jk_ajp_common.c (1943): AJP13 protocol: Reuse is OK [debug] ajp_reset_endpoint::jk_ajp_common.c (757): (Tomcat7A) resetting endpoint with socket 896 [debug] ajp_done::jk_ajp_common.c (3013): recycling connection pool slot=0 for worker Tomcat7A [debug] HttpExtensionProc::jk_isapi_plugin.c (2211): service() returned OK [debug] HttpFilterProc::jk_isapi_plugin.c (1851): Filter started [debug] map_uri_to_worker_ext::jk_uri_worker_map.c (1036): Attempting to map URI '/localhost/Accounter/login.jhtml' from 8 maps [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/servlet/*=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/ws/*=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/nems*.pdf=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/*.service=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/*.jhtml=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/*.json=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/jkmanager=status' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/servlet/*=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/ws/*=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/nems*.pdf=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/*.service=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/Accounter/*.jhtml=balancer' source 'uriworkermap' [debug] find_match::jk_uri_worker_map.c (863): Found a wildchar match '/Accounter/*.jhtml=balancer' [debug] HttpFilterProc::jk_isapi_plugin.c (1938): check if [/Accounter/login.jhtml] points to the web-inf directory [debug] HttpFilterProc::jk_isapi_plugin.c (1954): [/Accounter/login.jhtml] is a servlet url - should redirect to balancer [debug] HttpFilterProc::jk_isapi_plugin.c (1994): fowarding escaped URI [/Accounter/login.jhtml] [debug] init_ws_service::jk_isapi_plugin.c (2982): Reading extension header HTTP_TOMCATWORKER0000000180000000: balancer [debug] init_ws_service::jk_isapi_plugin.c (2983): Reading extension header HTTP_TOMCATWORKERIDX0000000180000000: 5 [debug] init_ws_service::jk_isapi_plugin.c (2984): Reading extension header HTTP_TOMCATURI0000000180000000: /Accounter/login.jhtml [debug] init_ws_service::jk_isapi_plugin.c (2985): Reading extension header HTTP_TOMCATQUERY0000000180000000: (null) [debug] init_ws_service::jk_isapi_plugin.c (3040): Applying service extensions [debug] init_ws_service::jk_isapi_plugin.c (3298): Service protocol=HTTP/1.1 method=GET host=::1 addr=::1 name=localhost port=80 auth= user= uri=/Accounter/login.jhtml [debug] init_ws_service::jk_isapi_plugin.c (3310): Service request headers=9 attributes=0 chunked=no content-length=0 available=0 [debug] wc_get_worker_for_name::jk_worker.c (116): found a worker balancer [debug] HttpExtensionProc::jk_isapi_plugin.c (2188): got a worker for name balancer [debug] service::jk_lb_worker.c (1118): service sticky_session=1 id='6A2507A4626F698EC74A733CDBA7D9FE.Tomcat7A' [debug] get_most_suitable_worker::jk_lb_worker.c (946): searching worker for partial sessionid 6A2507A4626F698EC74A733CDBA7D9FE.Tomcat7A [debug] get_most_suitable_worker::jk_lb_worker.c (954): searching worker for session route Tomcat7A [debug] get_most_suitable_worker::jk_lb_worker.c (968): found worker Tomcat7A (Tomcat7A) for route Tomcat7A and partial sessionid 6A2507A4626F698EC74A733CDBA7D9FE.Tomcat7A [debug] service::jk_lb_worker.c (1161): service worker=Tomcat7A route=Tomcat7A [debug] ajp_get_endpoint::jk_ajp_common.c (3096): acquired connection pool slot=0 after 0 retries [debug] ajp_marshal_into_msgb::jk_ajp_common.c (605): ajp marshaling done [debug] ajp_service::jk_ajp_common.c (2379): processing Tomcat7A with 2 retries [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): sending to ajp13 pos=4 len=577 max=8192 [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0000 .4.=....HTTP/1.1 [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0010 .../Accounter/lo [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0020 gin.jhtml...::1. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0030 ..::1...localhos [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0040 t..P.......Keep- [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0050 Alive.....0....r [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0060 image/jpeg,.imag [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0070 e/gif,.image/pjp [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0080 eg,.application/ [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0090 x-ms-application [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00a0 ,.application/xa [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00b0 ml+xml,.applicat [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00c0 ion/x-ms-xbap,.* [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00d0 /*...Accept-Enco [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00e0 ding...gzip,.def [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 00f0 late...Accept-La [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0100 nguage...nb-NO.. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0110 ..]Username=NA_j [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0120 ose.matias_AT_ad [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0130 denergy.no;.JSES [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0140 SIONID=6A2507A46 [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0150 26F698EC74A733CD [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0160 BA7D9FE.Tomcat7A [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0170 .....localhost.. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0180 ...http://localh [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0190 ost/Accounter/Ne [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01a0 msAccounter.jhtm [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01b0 l....uMozilla/4. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01c0 0.(compatible;.M [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01d0 SIE.8.0;.Windows [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01f0 Trident/4.0;.SLC [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 01e0 .NT.6.1;.WOW64;. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0200 C2;..NET.CLR.2.0 [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0210 .50727;..NET4.0C [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0220 ;..NET4.0E)..... [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0230 .......Tomcat7A. [debug] ajp_connection_tcp_send_message::jk_ajp_common.c (1145): 0240 ................ [debug] ajp_send_request::jk_ajp_common.c (1621): (Tomcat7A) Statistics about invalid connections: connect check (0), cping (0), send (0) [debug] ajp_send_request::jk_ajp_common.c (1632): (Tomcat7A) request body to send 0 - request body to resend 0 [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): received from ajp13 pos=0 len=135 max=8192 [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0000 .....OK.....Prag [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0010 ma...no-cache... [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0020 Expires...Thu,.0 [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0030 1.Jan.1970.00:00 [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0040 :00.GMT...Cache- [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0050 Control...no-cac [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0060 he...Cache-Contr [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0070 ol...no-store... [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1329): 0080 ..2995..........

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• LSI 9285-8e and Supermicro SC837E26-RJBOD1 duplicate enclosure ID and slot numbers

  - by Andy Shinn

  I am working with 2 x Supermicro SC837E26-RJBOD1 chassis connected to a single LSI 9285-8e card in a Supermicro 1U host. There are 28 drives in each chassis for a total of 56 drives in 28 RAID1 mirrors. The problem I am running in to is that there are duplicate slots for the 2 chassis (the slots list twice and only go from 0 to 27). All the drives also show the same enclosure ID (ID 36). However, MegaCLI -encinfo lists the 2 enclosures correctly (ID 36 and ID 65). My question is, why would this happen? Is there an option I am missing to use 2 enclosures effectively? This is blocking me rebuilding a drive that failed in slot 11 since I can only specify enclosure and slot as parameters to replace a drive. When I do this, it picks the wrong slot 11 (device ID 46 instead of device ID 19). Adapter #1 is the LSI 9285-8e, adapter #0 (which I removed due to space limitations) is the onboard LSI. Adapter information: Adapter #1 ============================================================================== Versions ================ Product Name : LSI MegaRAID SAS 9285-8e Serial No : SV12704804 FW Package Build: 23.1.1-0004 Mfg. Data ================ Mfg. Date : 06/30/11 Rework Date : 00/00/00 Revision No : 00A Battery FRU : N/A Image Versions in Flash: ================ BIOS Version : 5.25.00_4.11.05.00_0x05040000 WebBIOS Version : 6.1-20-e_20-Rel Preboot CLI Version: 05.01-04:#%00001 FW Version : 3.140.15-1320 NVDATA Version : 2.1106.03-0051 Boot Block Version : 2.04.00.00-0001 BOOT Version : 06.253.57.219 Pending Images in Flash ================ None PCI Info ================ Vendor Id : 1000 Device Id : 005b SubVendorId : 1000 SubDeviceId : 9285 Host Interface : PCIE ChipRevision : B0 Number of Frontend Port: 0 Device Interface : PCIE Number of Backend Port: 8 Port : Address 0 5003048000ee8e7f 1 5003048000ee8a7f 2 0000000000000000 3 0000000000000000 4 0000000000000000 5 0000000000000000 6 0000000000000000 7 0000000000000000 HW Configuration ================ SAS Address : 500605b0038f9210 BBU : Present Alarm : Present NVRAM : Present Serial Debugger : Present Memory : Present Flash : Present Memory Size : 1024MB TPM : Absent On board Expander: Absent Upgrade Key : Absent Temperature sensor for ROC : Present Temperature sensor for controller : Absent ROC temperature : 70 degree Celcius Settings ================ Current Time : 18:24:36 3/13, 2012 Predictive Fail Poll Interval : 300sec Interrupt Throttle Active Count : 16 Interrupt Throttle Completion : 50us Rebuild Rate : 30% PR Rate : 30% BGI Rate : 30% Check Consistency Rate : 30% Reconstruction Rate : 30% Cache Flush Interval : 4s Max Drives to Spinup at One Time : 2 Delay Among Spinup Groups : 12s Physical Drive Coercion Mode : Disabled Cluster Mode : Disabled Alarm : Enabled Auto Rebuild : Enabled Battery Warning : Enabled Ecc Bucket Size : 15 Ecc Bucket Leak Rate : 1440 Minutes Restore HotSpare on Insertion : Disabled Expose Enclosure Devices : Enabled Maintain PD Fail History : Enabled Host Request Reordering : Enabled Auto Detect BackPlane Enabled : SGPIO/i2c SEP Load Balance Mode : Auto Use FDE Only : No Security Key Assigned : No Security Key Failed : No Security Key Not Backedup : No Default LD PowerSave Policy : Controller Defined Maximum number of direct attached drives to spin up in 1 min : 10 Any Offline VD Cache Preserved : No Allow Boot with Preserved Cache : No Disable Online Controller Reset : No PFK in NVRAM : No Use disk activity for locate : No Capabilities ================ RAID Level Supported : RAID0, RAID1, RAID5, RAID6, RAID00, RAID10, RAID50, RAID60, PRL 11, PRL 11 with spanning, SRL 3 supported, PRL11-RLQ0 DDF layout with no span, PRL11-RLQ0 DDF layout with span Supported Drives : SAS, SATA Allowed Mixing: Mix in Enclosure Allowed Mix of SAS/SATA of HDD type in VD Allowed Status ================ ECC Bucket Count : 0 Limitations ================ Max Arms Per VD : 32 Max Spans Per VD : 8 Max Arrays : 128 Max Number of VDs : 64 Max Parallel Commands : 1008 Max SGE Count : 60 Max Data Transfer Size : 8192 sectors Max Strips PerIO : 42 Max LD per array : 16 Min Strip Size : 8 KB Max Strip Size : 1.0 MB Max Configurable CacheCade Size: 0 GB Current Size of CacheCade : 0 GB Current Size of FW Cache : 887 MB Device Present ================ Virtual Drives : 28 Degraded : 0 Offline : 0 Physical Devices : 59 Disks : 56 Critical Disks : 0 Failed Disks : 0 Supported Adapter Operations ================ Rebuild Rate : Yes CC Rate : Yes BGI Rate : Yes Reconstruct Rate : Yes Patrol Read Rate : Yes Alarm Control : Yes Cluster Support : No BBU : No Spanning : Yes Dedicated Hot Spare : Yes Revertible Hot Spares : Yes Foreign Config Import : Yes Self Diagnostic : Yes Allow Mixed Redundancy on Array : No Global Hot Spares : Yes Deny SCSI Passthrough : No Deny SMP Passthrough : No Deny STP Passthrough : No Support Security : No Snapshot Enabled : No Support the OCE without adding drives : Yes Support PFK : Yes Support PI : No Support Boot Time PFK Change : Yes Disable Online PFK Change : No PFK TrailTime Remaining : 0 days 0 hours Support Shield State : Yes Block SSD Write Disk Cache Change: Yes Supported VD Operations ================ Read Policy : Yes Write Policy : Yes IO Policy : Yes Access Policy : Yes Disk Cache Policy : Yes Reconstruction : Yes Deny Locate : No Deny CC : No Allow Ctrl Encryption: No Enable LDBBM : No Support Breakmirror : No Power Savings : Yes Supported PD Operations ================ Force Online : Yes Force Offline : Yes Force Rebuild : Yes Deny Force Failed : No Deny Force Good/Bad : No Deny Missing Replace : No Deny Clear : No Deny Locate : No Support Temperature : Yes Disable Copyback : No Enable JBOD : No Enable Copyback on SMART : No Enable Copyback to SSD on SMART Error : Yes Enable SSD Patrol Read : No PR Correct Unconfigured Areas : Yes Enable Spin Down of UnConfigured Drives : Yes Disable Spin Down of hot spares : No Spin Down time : 30 T10 Power State : Yes Error Counters ================ Memory Correctable Errors : 0 Memory Uncorrectable Errors : 0 Cluster Information ================ Cluster Permitted : No Cluster Active : No Default Settings ================ Phy Polarity : 0 Phy PolaritySplit : 0 Background Rate : 30 Strip Size : 64kB Flush Time : 4 seconds Write Policy : WB Read Policy : Adaptive Cache When BBU Bad : Disabled Cached IO : No SMART Mode : Mode 6 Alarm Disable : Yes Coercion Mode : None ZCR Config : Unknown Dirty LED Shows Drive Activity : No BIOS Continue on Error : No Spin Down Mode : None Allowed Device Type : SAS/SATA Mix Allow Mix in Enclosure : Yes Allow HDD SAS/SATA Mix in VD : Yes Allow SSD SAS/SATA Mix in VD : No Allow HDD/SSD Mix in VD : No Allow SATA in Cluster : No Max Chained Enclosures : 16 Disable Ctrl-R : Yes Enable Web BIOS : Yes Direct PD Mapping : No BIOS Enumerate VDs : Yes Restore Hot Spare on Insertion : No Expose Enclosure Devices : Yes Maintain PD Fail History : Yes Disable Puncturing : No Zero Based Enclosure Enumeration : No PreBoot CLI Enabled : Yes LED Show Drive Activity : Yes Cluster Disable : Yes SAS Disable : No Auto Detect BackPlane Enable : SGPIO/i2c SEP Use FDE Only : No Enable Led Header : No Delay during POST : 0 EnableCrashDump : No Disable Online Controller Reset : No EnableLDBBM : No Un-Certified Hard Disk Drives : Allow Treat Single span R1E as R10 : No Max LD per array : 16 Power Saving option : Don't Auto spin down Configured Drives Max power savings option is not allowed for LDs. Only T10 power conditions are to be used. Default spin down time in minutes: 30 Enable JBOD : No TTY Log In Flash : No Auto Enhanced Import : No BreakMirror RAID Support : No Disable Join Mirror : No Enable Shield State : Yes Time taken to detect CME : 60s Exit Code: 0x00 Enclosure information: # /opt/MegaRAID/MegaCli/MegaCli64 -encinfo -a1 Number of enclosures on adapter 1 -- 3 Enclosure 0: Device ID : 36 Number of Slots : 28 Number of Power Supplies : 2 Number of Fans : 3 Number of Temperature Sensors : 1 Number of Alarms : 1 Number of SIM Modules : 0 Number of Physical Drives : 28 Status : Normal Position : 1 Connector Name : Port B Enclosure type : SES VendorId is LSI CORP and Product Id is SAS2X36 VendorID and Product ID didnt match FRU Part Number : N/A Enclosure Serial Number : N/A ESM Serial Number : N/A Enclosure Zoning Mode : N/A Partner Device Id : 65 Inquiry data : Vendor Identification : LSI CORP Product Identification : SAS2X36 Product Revision Level : 0718 Vendor Specific : x36-55.7.24.1 Number of Voltage Sensors :2 Voltage Sensor :0 Voltage Sensor Status :OK Voltage Value :5020 milli volts Voltage Sensor :1 Voltage Sensor Status :OK Voltage Value :11820 milli volts Number of Power Supplies : 2 Power Supply : 0 Power Supply Status : OK Power Supply : 1 Power Supply Status : OK Number of Fans : 3 Fan : 0 Fan Speed :Low Speed Fan Status : OK Fan : 1 Fan Speed :Low Speed Fan Status : OK Fan : 2 Fan Speed :Low Speed Fan Status : OK Number of Temperature Sensors : 1 Temp Sensor : 0 Temperature : 48 Temperature Sensor Status : OK Number of Chassis : 1 Chassis : 0 Chassis Status : OK Enclosure 1: Device ID : 65 Number of Slots : 28 Number of Power Supplies : 2 Number of Fans : 3 Number of Temperature Sensors : 1 Number of Alarms : 1 Number of SIM Modules : 0 Number of Physical Drives : 28 Status : Normal Position : 1 Connector Name : Port A Enclosure type : SES VendorId is LSI CORP and Product Id is SAS2X36 VendorID and Product ID didnt match FRU Part Number : N/A Enclosure Serial Number : N/A ESM Serial Number : N/A Enclosure Zoning Mode : N/A Partner Device Id : 36 Inquiry data : Vendor Identification : LSI CORP Product Identification : SAS2X36 Product Revision Level : 0718 Vendor Specific : x36-55.7.24.1 Number of Voltage Sensors :2 Voltage Sensor :0 Voltage Sensor Status :OK Voltage Value :5020 milli volts Voltage Sensor :1 Voltage Sensor Status :OK Voltage Value :11760 milli volts Number of Power Supplies : 2 Power Supply : 0 Power Supply Status : OK Power Supply : 1 Power Supply Status : OK Number of Fans : 3 Fan : 0 Fan Speed :Low Speed Fan Status : OK Fan : 1 Fan Speed :Low Speed Fan Status : OK Fan : 2 Fan Speed :Low Speed Fan Status : OK Number of Temperature Sensors : 1 Temp Sensor : 0 Temperature : 47 Temperature Sensor Status : OK Number of Chassis : 1 Chassis : 0 Chassis Status : OK Enclosure 2: Device ID : 252 Number of Slots : 8 Number of Power Supplies : 0 Number of Fans : 0 Number of Temperature Sensors : 0 Number of Alarms : 0 Number of SIM Modules : 1 Number of Physical Drives : 0 Status : Normal Position : 1 Connector Name : Unavailable Enclosure type : SGPIO Failed in first Inquiry commnad FRU Part Number : N/A Enclosure Serial Number : N/A ESM Serial Number : N/A Enclosure Zoning Mode : N/A Partner Device Id : Unavailable Inquiry data : Vendor Identification : LSI Product Identification : SGPIO Product Revision Level : N/A Vendor Specific : Exit Code: 0x00 Now, notice that each slot 11 device shows an enclosure ID of 36, I think this is where the discrepancy happens. One should be 36. But the other should be on enclosure 65. Drives in slot 11: Enclosure Device ID: 36 Slot Number: 11 Drive's postion: DiskGroup: 5, Span: 0, Arm: 1 Enclosure position: 0 Device Id: 48 WWN: Sequence Number: 11 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SATA Raw Size: 2.728 TB [0x15d50a3b0 Sectors] Non Coerced Size: 2.728 TB [0x15d40a3b0 Sectors] Coerced Size: 2.728 TB [0x15d400000 Sectors] Firmware state: Online, Spun Up Is Commissioned Spare : YES Device Firmware Level: A5C0 Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x5003048000ee8a53 Connected Port Number: 1(path0) Inquiry Data: MJ1311YNG6YYXAHitachi HDS5C3030ALA630 MEAOA5C0 FDE Enable: Disable Secured: Unsecured Locked: Unlocked Needs EKM Attention: No Foreign State: None Device Speed: 6.0Gb/s Link Speed: 6.0Gb/s Media Type: Hard Disk Device Drive Temperature :30C (86.00 F) PI Eligibility: No Drive is formatted for PI information: No PI: No PI Drive's write cache : Disabled Drive's NCQ setting : Enabled Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Enclosure Device ID: 36 Slot Number: 11 Drive's postion: DiskGroup: 19, Span: 0, Arm: 1 Enclosure position: 0 Device Id: 19 WWN: Sequence Number: 4 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SATA Raw Size: 2.728 TB [0x15d50a3b0 Sectors] Non Coerced Size: 2.728 TB [0x15d40a3b0 Sectors] Coerced Size: 2.728 TB [0x15d400000 Sectors] Firmware state: Online, Spun Up Is Commissioned Spare : NO Device Firmware Level: A580 Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x5003048000ee8e53 Connected Port Number: 0(path0) Inquiry Data: MJ1313YNG1VA5CHitachi HDS5C3030ALA630 MEAOA580 FDE Enable: Disable Secured: Unsecured Locked: Unlocked Needs EKM Attention: No Foreign State: None Device Speed: 6.0Gb/s Link Speed: 6.0Gb/s Media Type: Hard Disk Device Drive Temperature :30C (86.00 F) PI Eligibility: No Drive is formatted for PI information: No PI: No PI Drive's write cache : Disabled Drive's NCQ setting : Enabled Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Update 06/28/12: I finally have some new information about (what we think) the root cause of this problem so I thought I would share. After getting in contact with a very knowledgeable Supermicro tech, they provided us with a tool called Xflash (doesn't appear to be readily available on their FTP). When we gathered some information using this utility, my colleague found something very strange: root@mogile2 test]# ./xflash.dat -i get avail Initializing Interface. Expander: SAS2X36 (SAS2x36) 1) SAS2X36 (SAS2x36) (50030480:00EE917F) (0.0.0.0) 2) SAS2X36 (SAS2x36) (50030480:00E9D67F) (0.0.0.0) 3) SAS2X36 (SAS2x36) (50030480:0112D97F) (0.0.0.0) This lists the connected enclosures. You see the 3 connected (we have since added a 3rd and a 4th which is not yet showing up) with their respective SAS address / WWN (50030480:00EE917F). Now we can use this address to get information on the individual enclosures: [root@mogile2 test]# ./xflash.dat -i 5003048000EE917F get exp Initializing Interface. Expander: SAS2X36 (SAS2x36) Reading the expander information.......... Expander: SAS2X36 (SAS2x36) B3 SAS Address: 50030480:00EE917F Enclosure Logical Id: 50030480:0000007F IP Address: 0.0.0.0 Component Identifier: 0x0223 Component Revision: 0x05 [root@mogile2 test]# ./xflash.dat -i 5003048000E9D67F get exp Initializing Interface. Expander: SAS2X36 (SAS2x36) Reading the expander information.......... Expander: SAS2X36 (SAS2x36) B3 SAS Address: 50030480:00E9D67F Enclosure Logical Id: 50030480:0000007F IP Address: 0.0.0.0 Component Identifier: 0x0223 Component Revision: 0x05 [root@mogile2 test]# ./xflash.dat -i 500304800112D97F get exp Initializing Interface. Expander: SAS2X36 (SAS2x36) Reading the expander information.......... Expander: SAS2X36 (SAS2x36) B3 SAS Address: 50030480:0112D97F Enclosure Logical Id: 50030480:0112D97F IP Address: 0.0.0.0 Component Identifier: 0x0223 Component Revision: 0x05 Did you catch it? The first 2 enclosures logical ID is partially masked out where the 3rd one (which has a correct unique enclosure ID) is not. We pointed this out to Supermicro and were able to confirm that this address is supposed to be set during manufacturing and there was a problem with a certain batch of these enclosures where the logical ID was not set. We believe that the RAID controller is determining the ID based on the logical ID and since our first 2 enclosures have the same logical ID, they get the same enclosure ID. We also confirmed that 0000007F is the default which comes from LSI as an ID. The next pointer that helps confirm this could be a manufacturing problem with a run of JBODs is the fact that all 6 of the enclosures that have this problem begin with 00E. I believe that between 00E8 and 00EE Supermicro forgot to program the logical IDs correctly and neglected to recall or fix the problem post production. Fortunately for us, there is a tool to manage the WWN and logical ID of the devices from Supermicro: ftp://ftp.supermicro.com/utility/ExpanderXtools_Lite/. Our next step is to schedule a shutdown of these JBODs (after data migration) and reprogram the logical ID and see if it solves the problem. Update 06/28/12 #2: I just discovered this FAQ at Supermicro while Google searching for "lsi 0000007f": http://www.supermicro.com/support/faqs/faq.cfm?faq=11805. I still don't understand why, in the last several times we contacted Supermicro, they would have never directed us to this article :\

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• ASP.NET MVC 3 Hosting :: How to Deploy Web Apps Using ASP.NET MVC 3, Razor and EF Code First - Part I

  - by mbridge

  First, you can download the source code from http://efmvc.codeplex.com. The following frameworks will be used for this step by step tutorial. public class Category {     public int CategoryId { get; set; }     [Required(ErrorMessage = "Name Required")]     [StringLength(25, ErrorMessage = "Must be less than 25 characters")]     public string Name { get; set;}     public string Description { get; set; }     public virtual ICollection<Expense> Expenses { get; set; } } Expense Class public class Expense {             public int ExpenseId { get; set; }            public string  Transaction { get; set; }     public DateTime Date { get; set; }     public double Amount { get; set; }     public int CategoryId { get; set; }     public virtual Category Category { get; set; } }    Define Domain Model Let’s create domain model for our simple web application Category Class We have two domain entities - Category and Expense. A single category contains a list of expense transactions and every expense transaction should have a Category. In this post, we will be focusing on CRUD operations for the entity Category and will be working on the Expense entity with a View Model object in the later post. And the source code for this application will be refactored over time. The above entities are very simple POCO (Plain Old CLR Object) classes and the entity Category is decorated with validation attributes in the System.ComponentModel.DataAnnotations namespace. Now we want to use these entities for defining model objects for the Entity Framework 4. Using the Code First approach of Entity Framework, we can first define the entities by simply writing POCO classes without any coupling with any API or database library. This approach lets you focus on domain model which will enable Domain-Driven Development for applications. EF code first support is currently enabled with a separate API that is runs on top of the Entity Framework 4. EF Code First is reached CTP 5 when I am writing this article. Creating Context Class for Entity Framework We have created our domain model and let’s create a class in order to working with Entity Framework Code First. For this, you have to download EF Code First CTP 5 and add reference to the assembly EntitFramework.dll. You can also use NuGet to download add reference to EEF Code First. public class MyFinanceContext : DbContext {     public MyFinanceContext() : base("MyFinance") { }     public DbSet<Category> Categories { get; set; }     public DbSet<Expense> Expenses { get; set; }         }   The above class MyFinanceContext is derived from DbContext that can connect your model classes to a database. The MyFinanceContext class is mapping our Category and Expense class into database tables Categories and Expenses using DbSet<TEntity> where TEntity is any POCO class. When we are running the application at first time, it will automatically create the database. EF code-first look for a connection string in web.config or app.config that has the same name as the dbcontext class. If it is not find any connection string with the convention, it will automatically create database in local SQL Express database by default and the name of the database will be same name as the dbcontext class. You can also define the name of database in constructor of the the dbcontext class. Unlike NHibernate, we don’t have to use any XML based mapping files or Fluent interface for mapping between our model and database. The model classes of Code First are working on the basis of conventions and we can also use a fluent API to refine our model. The convention for primary key is ‘Id’ or ‘<class name>Id’.  If primary key properties are detected with type ‘int’, ‘long’ or ‘short’, they will automatically registered as identity columns in the database by default. Primary key detection is not case sensitive. We can define our model classes with validation attributes in the System.ComponentModel.DataAnnotations namespace and it automatically enforces validation rules when a model object is updated or saved. Generic Repository for EF Code First We have created model classes and dbcontext class. Now we have to create generic repository pattern for data persistence with EF code first. If you don’t know about the repository pattern, checkout Martin Fowler’s article on Repository Let’s create a generic repository to working with DbContext and DbSet generics. public interface IRepository<T> where T : class     {         void Add(T entity);         void Delete(T entity);         T GetById(long Id);         IEnumerable<T> All();     } RepositoryBasse – Generic Repository class protected MyFinanceContext Database {     get { return database ?? (database = DatabaseFactory.Get()); } } public virtual void Add(T entity) {     dbset.Add(entity);            }        public virtual void Delete(T entity) {     dbset.Remove(entity); }   public virtual T GetById(long id) {     return dbset.Find(id); }   public virtual IEnumerable<T> All() {     return dbset.ToList(); } } DatabaseFactory class public class DatabaseFactory : Disposable, IDatabaseFactory {     private MyFinanceContext database;     public MyFinanceContext Get()     {         return database ?? (database = new MyFinanceContext());     }     protected override void DisposeCore()     {         if (database != null)             database.Dispose();     } } Unit of Work If you are new to Unit of Work pattern, checkout Fowler’s article on Unit of Work . According to Martin Fowler, the Unit of Work pattern "maintains a list of objects affected by a business transaction and coordinates the writing out of changes and the resolution of concurrency problems." Let’s create a class for handling Unit of Work public interface IUnitOfWork {     void Commit(); } UniOfWork class public class UnitOfWork : IUnitOfWork {     private readonly IDatabaseFactory databaseFactory;     private MyFinanceContext dataContext;       public UnitOfWork(IDatabaseFactory databaseFactory)     {         this.databaseFactory = databaseFactory;     }       protected MyFinanceContext DataContext     {         get { return dataContext ?? (dataContext = databaseFactory.Get()); }     }       public void Commit()     {         DataContext.Commit();     } } The Commit method of the UnitOfWork will call the commit method of MyFinanceContext class and it will execute the SaveChanges method of DbContext class.   Repository class for Category In this post, we will be focusing on the persistence against Category entity and will working on other entities in later post. Let’s create a repository for handling CRUD operations for Category using derive from a generic Repository RepositoryBase<T>. public class CategoryRepository: RepositoryBase<Category>, ICategoryRepository     {     public CategoryRepository(IDatabaseFactory databaseFactory)         : base(databaseFactory)         {         }                } public interface ICategoryRepository : IRepository<Category> { } If we need additional methods than generic repository for the Category, we can define in the CategoryRepository. Dependency Injection using Unity 2.0 If you are new to Inversion of Control/ Dependency Injection or Unity, please have a look on my articles at http://weblogs.asp.net/shijuvarghese/archive/tags/IoC/default.aspx. I want to create a custom lifetime manager for Unity to store container in the current HttpContext. public class HttpContextLifetimeManager<T> : LifetimeManager, IDisposable {     public override object GetValue()     {         return HttpContext.Current.Items[typeof(T).AssemblyQualifiedName];     }     public override void RemoveValue()     {         HttpContext.Current.Items.Remove(typeof(T).AssemblyQualifiedName);     }     public override void SetValue(object newValue)     {         HttpContext.Current.Items[typeof(T).AssemblyQualifiedName] = newValue;     }     public void Dispose()     {         RemoveValue();     } } Let’s create controller factory for Unity in the ASP.NET MVC 3 application.                 404, String.Format(                     "The controller for path '{0}' could not be found" +     "or it does not implement IController.",                 reqContext.HttpContext.Request.Path));       if (!typeof(IController).IsAssignableFrom(controllerType))         throw new ArgumentException(                 string.Format(                     "Type requested is not a controller: {0}",                     controllerType.Name),                     "controllerType");     try     {         controller= container.Resolve(controllerType) as IController;     }     catch (Exception ex)     {         throw new InvalidOperationException(String.Format(                                 "Error resolving controller {0}",                                 controllerType.Name), ex);     }     return controller; }   } Configure contract and concrete types in Unity Let’s configure our contract and concrete types in Unity for resolving our dependencies. private void ConfigureUnity() {     //Create UnityContainer               IUnityContainer container = new UnityContainer()                 .RegisterType<IDatabaseFactory, DatabaseFactory>(new HttpContextLifetimeManager<IDatabaseFactory>())     .RegisterType<IUnitOfWork, UnitOfWork>(new HttpContextLifetimeManager<IUnitOfWork>())     .RegisterType<ICategoryRepository, CategoryRepository>(new HttpContextLifetimeManager<ICategoryRepository>());                 //Set container for Controller Factory                ControllerBuilder.Current.SetControllerFactory(             new UnityControllerFactory(container)); } In the above ConfigureUnity method, we are registering our types onto Unity container with custom lifetime manager HttpContextLifetimeManager. Let’s call ConfigureUnity method in the Global.asax.cs for set controller factory for Unity and configuring the types with Unity. protected void Application_Start() {     AreaRegistration.RegisterAllAreas();     RegisterGlobalFilters(GlobalFilters.Filters);     RegisterRoutes(RouteTable.Routes);     ConfigureUnity(); } Developing web application using ASP.NET MVC 3 We have created our domain model for our web application and also have created repositories and configured dependencies with Unity container. Now we have to create controller classes and views for doing CRUD operations against the Category entity. Let’s create controller class for Category Category Controller public class CategoryController : Controller {     private readonly ICategoryRepository categoryRepository;     private readonly IUnitOfWork unitOfWork;           public CategoryController(ICategoryRepository categoryRepository, IUnitOfWork unitOfWork)     {         this.categoryRepository = categoryRepository;         this.unitOfWork = unitOfWork;     }       public ActionResult Index()     {         var categories = categoryRepository.All();         return View(categories);     }     [HttpGet]     public ActionResult Edit(int id)     {         var category = categoryRepository.GetById(id);         return View(category);     }       [HttpPost]     public ActionResult Edit(int id, FormCollection collection)     {         var category = categoryRepository.GetById(id);         if (TryUpdateModel(category))         {             unitOfWork.Commit();             return RedirectToAction("Index");         }         else return View(category);                 }       [HttpGet]     public ActionResult Create()     {         var category = new Category();         return View(category);     }           [HttpPost]     public ActionResult Create(Category category)     {         if (!ModelState.IsValid)         {             return View("Create", category);         }                     categoryRepository.Add(category);         unitOfWork.Commit();         return RedirectToAction("Index");     }       [HttpPost]     public ActionResult Delete(int  id)     {         var category = categoryRepository.GetById(id);         categoryRepository.Delete(category);         unitOfWork.Commit();         var categories = categoryRepository.All();         return PartialView("CategoryList", categories);       }        } Creating Views in Razor Now we are going to create views in Razor for our ASP.NET MVC 3 application.  Let’s create a partial view CategoryList.cshtml for listing category information and providing link for Edit and Delete operations. CategoryList.cshtml @using MyFinance.Helpers; @using MyFinance.Domain; @model IEnumerable<Category>      <table>         <tr>         <th>Actions</th>         <th>Name</th>          <th>Description</th>         </tr>     @foreach (var item in Model) {             <tr>             <td>                 @Html.ActionLink("Edit", "Edit",new { id = item.CategoryId })                 @Ajax.ActionLink("Delete", "Delete", new { id = item.CategoryId }, new AjaxOptions { Confirm = "Delete Expense?", HttpMethod = "Post", UpdateTargetId = "divCategoryList" })                           </td>             <td>                 @item.Name             </td>             <td>                 @item.Description             </td>         </tr>         }       </table>     <p>         @Html.ActionLink("Create New", "Create")     </p> The delete link is providing Ajax functionality using the Ajax.ActionLink. This will call an Ajax request for Delete action method in the CategoryCotroller class. In the Delete action method, it will return Partial View CategoryList after deleting the record. We are using CategoryList view for the Ajax functionality and also for Index view using for displaying list of category information. Let’s create Index view using partial view CategoryList  Index.chtml @model IEnumerable<MyFinance.Domain.Category> @{     ViewBag.Title = "Index"; }    <h2>Category List</h2>    <script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"></script>    <div id="divCategoryList">               @Html.Partial("CategoryList", Model) </div> We can call the partial views using Html.Partial helper method. Now we are going to create View pages for insert and update functionality for the Category. Both view pages are sharing common user interface for entering the category information. So I want to create an EditorTemplate for the Category information. We have to create the EditorTemplate with the same name of entity object so that we can refer it on view pages using @Html.EditorFor(model => model) . So let’s create template with name Category. Category.cshtml @model MyFinance.Domain.Category <div class="editor-label"> @Html.LabelFor(model => model.Name) </div> <div class="editor-field"> @Html.EditorFor(model => model.Name) @Html.ValidationMessageFor(model => model.Name) </div> <div class="editor-label"> @Html.LabelFor(model => model.Description) </div> <div class="editor-field"> @Html.EditorFor(model => model.Description) @Html.ValidationMessageFor(model => model.Description) </div> Let’s create view page for insert Category information @model MyFinance.Domain.Category   @{     ViewBag.Title = "Save"; }   <h2>Create</h2>   <script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script> <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>   @using (Html.BeginForm()) {     @Html.ValidationSummary(true)     <fieldset>         <legend>Category</legend>                @Html.EditorFor(model => model)               <p>             <input type="submit" value="Create" />         </p>     </fieldset> }   <div>     @Html.ActionLink("Back to List", "Index") </div> ViewStart file In Razor views, we can add a file named _viewstart.cshtml in the views directory  and this will be shared among the all views with in the Views directory. The below code in the _viewstart.cshtml, sets the Layout page for every Views in the Views folder.     @{     Layout = "~/Views/Shared/_Layout.cshtml"; } Tomorrow, we will cotinue the second part of this article. :)

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• More SharePoint 2010 Expression Builders

  - by Ricardo Peres

  Introduction Following my last post, I decided to publish the whole set of expression builders that I use with SharePoint. For all who don’t know about expression builders, they allow us to employ a declarative approach, so that we don’t have to write code for “gluing” things together, like getting a value from the query string, the page’s underlying SPListItem or the current SPContext and assigning it to a control’s property. These expression builders are for some quite common scenarios, I use them quite often, and I hope you find them useful as well. SPContextExpression This expression builder allows us to specify an expression to be processed on the SPContext.Current property object. For example: 1: <asp:Literal runat="server" Text=“<%$ SPContextExpression:Site.RootWeb.Lists[0].Author.LoginName %>”/> It is identical to having the following code: 1: String authorName = SPContext.Current.Site.RootWeb.Lists[0].Author.LoginName; SPFarmProperty Returns a property stored on the farm level: 1: <asp:Literal runat="server" Text="<%$ SPFarmProperty:SomeProperty %>"/> Identical to: 1: Object someProperty = SPFarm.Local.Properties["SomeProperty"]; SPField Returns the value of a selected page’s list item field: 1: <asp:Literal runat="server" Text="<%$ SPField:Title %>"/> Does the same as: 1: String title = SPContext.Current.ListItem["Title"] as String; SPIsInAudience Checks if the current user belongs to an audience: 1: <asp:CheckBox runat="server" Checked="<%$ SPIsInAudience:SomeAudience %>"/> Equivalent to: 1: AudienceManager audienceManager = new AudienceManager(SPServiceContext.Current); 2: Audience audience = audienceManager.Audiences["SomeAudience"]; 3: Boolean isMember = audience.IsMember(SPContext.Current.Web.User.LoginName); SPIsInGroup Checks if the current user belongs to a group: 1: <asp:CheckBox runat="server" Checked="<%$ SPIsInGroup:SomeGroup %>"/> The equivalent C# code is: 1: SPContext.Current.Web.CurrentUser.Groups.OfType<SPGroup>().Any(x => String.Equals(x.Name, “SomeGroup”, StringComparison.OrdinalIgnoreCase)); SPProperty Returns the value of a user profile property for the current user: 1: <asp:Literal runat="server" Text="<%$ SPProperty:LastName %>"/> Where the same code in C# would be: 1: UserProfileManager upm = new UserProfileManager(SPServiceContext.Current); 2: UserProfile u = upm.GetUserProfile(false); 3: Object property = u["LastName"].Value; SPQueryString Returns a value passed on the query string: 1: <asp:GridView runat="server" PageIndex="<%$ SPQueryString:PageIndex %>" /> Is equivalent to (no SharePoint code this time): 1: Int32 pageIndex = Convert.ChangeType(typeof(Int32), HttpContext.Current.Request.QueryString["PageIndex"]); SPWebProperty Returns the value of a property stored at the site level: 1: <asp:Literal runat="server" Text="<%$ SPWebProperty:__ImagesListId %>"/> You can get the same result as: 1: String imagesListId = SPContext.Current.Web.AllProperties["__ImagesListId"] as String; Code OK, let’s move to the code. First, a common abstract base class, mainly for inheriting the conversion method: 1: public abstract class SPBaseExpressionBuilder : ExpressionBuilder 2: { 3: #region Protected static methods 4: protected static Object Convert(Object value, PropertyInfo propertyInfo) 5: { 6: if (value != null) 7: { 8: if (propertyInfo.PropertyType.IsAssignableFrom(value.GetType()) == false) 9: { 10: if (propertyInfo.PropertyType.IsEnum == true) 11: { 12: value = Enum.Parse(propertyInfo.PropertyType, value.ToString(), true); 13: } 14: else if (propertyInfo.PropertyType == typeof(String)) 15: { 16: value = value.ToString(); 17: } 18: else if ((typeof(IConvertible).IsAssignableFrom(propertyInfo.PropertyType) == true) && (typeof(IConvertible).IsAssignableFrom(value.GetType()) == true)) 19: { 20: value = System.Convert.ChangeType(value, propertyInfo.PropertyType); 21: } 22: } 23: } 24:  25: return (value); 26: } 27: #endregion 28:  29: #region Public override methods 30: public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 31: { 32: if (String.IsNullOrEmpty(entry.Expression) == true) 33: { 34: return (new CodePrimitiveExpression(String.Empty)); 35: } 36: else 37: { 38: return (new CodeMethodInvokeExpression(new CodeMethodReferenceExpression(new CodeTypeReferenceExpression(this.GetType()), "GetValue"), new CodePrimitiveExpression(entry.Expression.Trim()), new CodePropertyReferenceExpression(new CodeArgumentReferenceExpression("entry"), "PropertyInfo"))); 39: } 40: } 41: #endregion 42:  43: #region Public override properties 44: public override Boolean SupportsEvaluate 45: { 46: get 47: { 48: return (true); 49: } 50: } 51: #endregion 52: } Next, the code for each expression builder: 1: [ExpressionPrefix("SPContext")] 2: public class SPContextExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String expression, PropertyInfo propertyInfo) 6: { 7: SPContext context = SPContext.Current; 8: Object expressionValue = DataBinder.Eval(context, expression.Trim().Replace('\'', '"')); 9:  10: expressionValue = Convert(expressionValue, propertyInfo); 11:  12: return (expressionValue); 13: } 14:  15: #endregion 16:  17: #region Public override methods 18: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 19: { 20: return (GetValue(entry.Expression, entry.PropertyInfo)); 21: } 22: #endregion 23: }   1: [ExpressionPrefix("SPFarmProperty")] 2: public class SPFarmPropertyExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String propertyName, PropertyInfo propertyInfo) 6: { 7: Object propertyValue = SPFarm.Local.Properties[propertyName]; 8:  9: propertyValue = Convert(propertyValue, propertyInfo); 10:  11: return (propertyValue); 12: } 13:  14: #endregion 15:  16: #region Public override methods 17: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 18: { 19: return (GetValue(entry.Expression, entry.PropertyInfo)); 20: } 21: #endregion 22: }   1: [ExpressionPrefix("SPField")] 2: public class SPFieldExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String fieldName, PropertyInfo propertyInfo) 6: { 7: Object fieldValue = SPContext.Current.ListItem[fieldName]; 8:  9: fieldValue = Convert(fieldValue, propertyInfo); 10:  11: return (fieldValue); 12: } 13:  14: #endregion 15:  16: #region Public override methods 17: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 18: { 19: return (GetValue(entry.Expression, entry.PropertyInfo)); 20: } 21: #endregion 22: }   1: [ExpressionPrefix("SPIsInAudience")] 2: public class SPIsInAudienceExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String audienceName, PropertyInfo info) 6: { 7: Debugger.Break(); 8: audienceName = audienceName.Trim(); 9:  10: if ((audienceName.StartsWith("'") == true) && (audienceName.EndsWith("'") == true)) 11: { 12: audienceName = audienceName.Substring(1, audienceName.Length - 2); 13: } 14:  15: AudienceManager manager = new AudienceManager(); 16: Object value = manager.IsMemberOfAudience(SPControl.GetContextWeb(HttpContext.Current).CurrentUser.LoginName, audienceName); 17:  18: if (info.PropertyType == typeof(String)) 19: { 20: value = value.ToString(); 21: } 22:  23: return(value); 24: } 25:  26: #endregion 27:  28: #region Public override methods 29: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 30: { 31: return (GetValue(entry.Expression, entry.PropertyInfo)); 32: } 33: #endregion 34: }   1: [ExpressionPrefix("SPIsInGroup")] 2: public class SPIsInGroupExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String groupName, PropertyInfo info) 6: { 7: groupName = groupName.Trim(); 8:  9: if ((groupName.StartsWith("'") == true) && (groupName.EndsWith("'") == true)) 10: { 11: groupName = groupName.Substring(1, groupName.Length - 2); 12: } 13:  14: Object value = SPControl.GetContextWeb(HttpContext.Current).CurrentUser.Groups.OfType<SPGroup>().Any(x => String.Equals(x.Name, groupName, StringComparison.OrdinalIgnoreCase)); 15:  16: if (info.PropertyType == typeof(String)) 17: { 18: value = value.ToString(); 19: } 20:  21: return(value); 22: } 23:  24: #endregion 25:  26: #region Public override methods 27: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 28: { 29: return (GetValue(entry.Expression, entry.PropertyInfo)); 30: } 31: #endregion 32: }   1: [ExpressionPrefix("SPProperty")] 2: public class SPPropertyExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String propertyName, System.Reflection.PropertyInfo propertyInfo) 6: { 7: SPServiceContext serviceContext = SPServiceContext.GetContext(HttpContext.Current); 8: UserProfileManager upm = new UserProfileManager(serviceContext); 9: UserProfile up = upm.GetUserProfile(false); 10: Object propertyValue = (up[propertyName] != null) ? up[propertyName].Value : null; 11:  12: propertyValue = Convert(propertyValue, propertyInfo); 13:  14: return (propertyValue); 15: } 16:  17: #endregion 18:  19: #region Public override methods 20: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 21: { 22: return (GetValue(entry.Expression, entry.PropertyInfo)); 23: } 24: #endregion 25: }   1: [ExpressionPrefix("SPQueryString")] 2: public class SPQueryStringExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String parameterName, PropertyInfo propertyInfo) 6: { 7: Object parameterValue = HttpContext.Current.Request.QueryString[parameterName]; 8:  9: parameterValue = Convert(parameterValue, propertyInfo); 10:  11: return (parameterValue); 12: } 13:  14: #endregion 15:  16: #region Public override methods 17: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 18: { 19: return (GetValue(entry.Expression, entry.PropertyInfo)); 20: } 21: #endregion 22: }   1: [ExpressionPrefix("SPWebProperty")] 2: public class SPWebPropertyExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String propertyName, PropertyInfo propertyInfo) 6: { 7: Object propertyValue = SPContext.Current.Web.AllProperties[propertyName]; 8:  9: propertyValue = Convert(propertyValue, propertyInfo); 10:  11: return (propertyValue); 12: } 13:  14: #endregion 15:  16: #region Public override methods 17: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 18: { 19: return (GetValue(entry.Expression, entry.PropertyInfo)); 20: } 21: #endregion 22: } Registration You probably know how to register them, but here it goes again: add this following snippet to your Web.config file, inside the configuration/system.web/compilation/expressionBuilders section: 1: <add expressionPrefix="SPContext" type="MyNamespace.SPContextExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 2: <add expressionPrefix="SPFarmProperty" type="MyNamespace.SPFarmPropertyExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 3: <add expressionPrefix="SPField" type="MyNamespace.SPFieldExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 4: <add expressionPrefix="SPIsInAudience" type="MyNamespace.SPIsInAudienceExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 5: <add expressionPrefix="SPIsInGroup" type="MyNamespace.SPIsInGroupExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 6: <add expressionPrefix="SPProperty" type="MyNamespace.SPPropertyExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 7: <add expressionPrefix="SPQueryString" type="MyNamespace.SPQueryStringExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 8: <add expressionPrefix="SPWebProperty" type="MyNamespace.SPWebPropertyExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> I’ll leave it up to you to figure out the best way to deploy this to your server!

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• Varnish 3.0.2 and ISPConfig 3.0.4

  - by Warren Bullock III

  I followed the tutorial The Perfect Server - Ubuntu 11.10 [ISPConfig 3] here. I'm running an Ubuntu 11.04 (Natty Narwhal) server with 1024 RAM on Rackspace. I've gone through and updated to ISPConfig 3.0.4. Everything has been working great up to now when I decided to try and install Varnish. Initially I did an install of Varnish by issuing: apt-get update apt-get upgrade apt-get install varnish Apparently the version that was installed was Varnish 2.x so I went back and added the repositories for packages provided by varnish-cache.org curl http://repo.varnish-cache.org/debian/GPG-key.txt | apt-key add - echo "deb http://repo.varnish-cache.org/ubuntu/ lucid varnish-3.0" >> /etc/apt/sources.list apt-get update apt-get install varnish This updated my version of Varnish to 3.0.2 I then proceeded to make the following changes: vim /etc/default/varnish change DAEMON_OPTS to port 80: vim /etc/apache2/ports.conf NameVirtualHost *:8000 Listen 8000 vim /etc/apache2/sites-available/default <VirtualHost *:8000> vim /etc/apache2/sites-available/ispconfig.vhost Listen 8080 NameVirtualHost *:8080 <VirtualHost _default_:8080> I then proceeded to set my other vhosts to use 8000 (the apache2 port) so with all this set I reset both Apache2 and Varnish to test. I used Firebug in Firefox 11.0 The output from what I see doesn't seem to indicate that Varnish is working completely correct: First of all I see: X-Varnish 1644834493 but I've heard that unless you have two timestamps side by side than it's probably not working correctly so for example I was thinking I might see something like: X-Varnish 1644834493 1644837493 Also if I noticed this in the output which seems to be inconstant: X-Drupal-Cache MISS There are times when it will say HIT as well.... So the question here that I have is I think Varnish is partially working, however, why don't I see two timestamps on X-Varnish like I'm thinking I should and does the output of the screenshot I have look correct? If Varnish isn't working can someone tell me what I might being doing wrong? Thanks in advance.

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• IIS 7 returns 304 instead of 200

  - by Ola Herrdahl

  I have a strange issue with IIS 7. Sometimes it seems to return a 304 instead of a 200. Here is a sample request captured with Fiddler: (Note that the file requested is not located in my browsers cache yet.) GET https://[mysite]/Content/js/jquery.form.js HTTP/1.1 Accept: */* Referer: https://[mysite]/Welcome/News Accept-Language: sv-SE User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; OfficeLiveConnector.1.4; OfficeLivePatch.1.3; .NET4.0C; .NET4.0E) Accept-Encoding: gzip, deflate Host: [mysite] Connection: Keep-Alive Cache-Control: no-cache Cookie: ... Note that there is no If-Modified-Since or If-None-Match in the request. But still the response is: HTTP/1.1 304 Not Modified Cache-Control: public Expires: Tue, 02 Mar 2010 06:26:08 GMT Last-Modified: Mon, 22 Feb 2010 21:58:44 GMT ETag: "1CAB40A337D4200" Server: Microsoft-IIS/7.5 X-Powered-By: ASP.NET Date: Mon, 01 Mar 2010 17:06:34 GMT Does anyone have a clue of what could be wrong here? I'm running IIS 7 on Windows Web Server 2008 R2.

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• Squid external_acl_type Cannot run process

  - by Alex Rezistorman

  I want to restrict uploading for group of the users via squid. So I've choosen to use external_acl_type but after reload of the squid it returns error. WARNING: Cannot run '/usr/local/etc/squid/lists/newupload.sh' process. Permissions of newupload.sh and squid are the same. newupload.sh is executive. How can I solve this problem? Thnx in advance. newupload.sh #!/bin/sh while read line; do set -- $line length=$1 limit=$2 if [ -z "$length" ] || [ "$length" -le "$2" ]; then echo OK else echo ERR fi done Strings from squid.conf external_acl_type request_body protocol=2.5 %{Content-Lenght} /usr/local/etc/squid/lists/newupload.sh acl request_max_size external request_body 5000 http_access allow users request_max_size Squid version squid -v Squid Cache: Version 3.2.13 configure options: '--with-default-user=squid' '--bindir=/usr/local/sbin' '--sbindir=/usr/local/sbin' '--datadir=/usr/local/etc/squid' '--libexecdir=/usr/local/libexec/squid' '--localstatedir=/var' '--sysconfdir=/usr/local/etc/squid' '--with-logdir=/var/log/squid' '--with-pidfile=/var/run/squid/squid.pid' '--with-swapdir=/var/squid/cache/squid' '--enable-auth' '--enable-build-info' '--enable-loadable-modules' '--enable-removal-policies=lru heap' '--disable-epoll' '--disable-linux-netfilter' '--disable-linux-tproxy' '--disable-translation' '--enable-auth-basic=PAM' '--disable-auth-digest' '--enable-external-acl-helpers= kerberos_ldap_group' '--enable-auth-negotiate=kerberos' '--disable-auth-ntlm' '--without-pthreads' '--enable-storeio=diskd ufs' '--enable-disk-io=AIO Blocking DiskDaemon IpcIo Mmapped' '--enable-log-daemon-helpers=file' '--disable-url-rewrite-helpers' '--disable-ipv6' '--disable-snmp' '--disable-htcp' '--disable-forw-via-db' '--disable-cache-digests' '--disable-wccp' '--disable-wccpv2' '--disable-ident-lookups' '--disable-eui' '--disable-ipfw-transparent' '--disable-pf-transparent' '--disable-ipf-transparent' '--disable-follow-x-forwarded-for' '--disable-ecap' '--disable-icap-client' '--disable-esi' '--enable-kqueue' '--with-large-files' '--enable-cachemgr-hostname=proxy.adir.vbr.ua' '--with-filedescriptors=131072' '--disable-auto-locale' '--prefix=/usr/local' '--mandir=/usr/local/man' '--infodir=/usr/local/info/' '--build=amd64-portbld-freebsd8.3' 'build_alias=amd64-portbld-freebsd8.3' 'CC=cc' 'CFLAGS=-O2 -fno-strict-aliasing -frename-registers -fweb -fforce-addr -fmerge-all-constants -maccumulate-outgoing-args -pipe -march=core2 -I/usr/local/include -DLDAP_DEPRECATED' 'LDFLAGS= -L/usr/local/lib' 'CPPFLAGS=-I/usr/local/include' 'CXX=c++' 'CXXFLAGS=-O2 -fno-strict-aliasing -frename-registers -fweb -fforce-addr -fmerge-all-constants -maccumulate-outgoing-args -pipe -march=core2 -I/usr/local/include -DLDAP_DEPRECATED' 'CPP=cpp' --enable-ltdl-convenience Related post: Restrict uploading for groups in squid http://squid-web-proxy-cache.1019090.n4.nabble.com/flexible-managing-of-request-body-max-size-with-squid-2-5-STABLE12-td1022653.html

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• CORS Fails on CloudFront Distribution with Nginx Origin

  - by kgrote

  I have a CloudFront distribution set up with an Nginx server as the origin (a Media Temple DV server, to be specific). I enabled the Access-Control-Allow-Origin: * header so fonts will work in Firefox. However, Firefox throws a CORS error for fonts loaded from this CloudFront/Nginx distribution. I created another CloudFront distribution, this time with an Apache server as the origin, and set Access-Control-Allow-Origin: * also. Firefox displays fonts from this origin without issue. I've set up a demo page here: http://kristengrote.com/cors-test/ When I perform a curl request for the same font file from each distribution, both files return almost exactly the same headers: Apache Origin Nginx Origin ——————————————————— ——————————————————— HTTP/1.1 200 OK HTTP/1.1 200 OK Server: Apache Server: nginx Content-Type: application/font-woff Content-Type: application/font-woff Content-Length: 25428 Content-Length: 25428 Connection: keep-alive Connection: keep-alive Date: Wed, 11 Jun 2014 23:23:09 GMT Date: Wed, 11 Jun 2014 23:15:23 GMT Last-Modified: Tue, 10 Jun 2014 22:15:56 GMT Last-Modified: Tue, 10 Jun 2014 22:56:09 GMT Accept-Ranges: bytes Accept-Ranges: bytes Cache-Control: max-age=2592000 Cache-Control: max-age=2592000 Expires: Fri, 11 Jul 2014 23:23:09 GMT Expires: Fri, 11 Jul 2014 23:15:23 GMT Access-Control-Allow-Origin: * Access-Control-Allow-Origin: * Access-Control-Allow-Methods: GET, HEAD Access-Control-Allow-Methods: GET, HEAD Access-Control-Allow-Headers: * Access-Control-Allow-Headers: * Access-Control-Max-Age: 3000 Access-Control-Max-Age: 3000 X-Cache: Hit from cloudfront X-Cache: Hit from cloudfront Via: 1.1 210111ffb8239a13be669aa7c59f53bd.cloudfront.net (CloudFront) Via: 1.1 fa0dd57deefe7337151830e7e9660414.cloudfront.net (CloudFront) X-Amz-Cf-Id: QWucpBoZnS3B8E1mlXR2V5V-SVUoITCeVb64fETuAgNuGuTLnbzAhw== X-Amz-Cf-Id: E2Z3VOIfR5QPcYN1osOgvk0HyBwc3PxrFBBHYdA65ZntXDe-srzgUQ== Age: 487 X-Accel-Version: 0.01 X-Powered-By: PleskLin X-Robots-Tag: noindex, nofollow So the only conclusion I can draw is that something about Nginx is preventing Firefox from recognizing CORS and allowing the fonts via CloudFront. Any ideas on what the heck is happening here?

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• Can I upgrade the CPU in my Lenovo 3000 N100 laptop?

  - by Pavel

  I've got an Intel Core Duo T2300 in my laptop (Lenovo 3000 N100, 0768-49G). Here is what I could find out about it: $ sudo dmidecode # dmidecode 2.11 SMBIOS 2.4 present. 42 structures occupying 1436 bytes. Table at 0x000DC010. Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: LENOVO Version: 61ET37WW Release Date: 06/04/07 Address: 0xE6B70 [...] Handle 0x0002, DMI type 2, 8 bytes Base Board Information Manufacturer: LENOVO Product Name: CAPELL VALLEY(NAPA) CRB [...] Handle 0x0004, DMI type 4, 35 bytes Processor Information Socket Designation: U2E1 Type: Central Processor Family: Other Manufacturer: Intel ID: E8 06 00 00 FF FB E9 BF Version: Genuine Intel(R) CPU T2300 @ 1.66GHz Voltage: 3.3 V External Clock: 166 MHz Max Speed: 2048 MHz Current Speed: 1600 MHz Status: Populated, Enabled Upgrade: ZIF Socket L1 Cache Handle: 0x0005 L2 Cache Handle: 0x0006 L3 Cache Handle: Not Provided Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 14 model name : Genuine Intel(R) CPU T2300 @ 1.66GHz stepping : 8 microcode : 0x39 cpu MHz : 1000.000 cache size : 2048 KB I believe the chipset is "Mobile Intel 945GM Express", but I don't know how to verify it on a Linux system. I'm not sure about the socket, but Intel claims "Sockets Supported: PBGA479, PPGA478". Now, I'd like to upgrade to the fastest compatible CPU available, but I'm a bit lost in all the details. Can you guys help me out with a couple of questions, please? What CPUs can I choose from? (I think it's only the Core2Duo line, but it should be enough for an upgrade) Can I use a 64-bit CPU? Can I use a CPU with a higher FSB than 667 MHz? Do I have to worry about additional cooling, or is it enough to check for similar voltage/TDP values? Thank you!

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• Outbound HTTP performance tuning recommendations

  - by Richard Gadsden

  I'll detail my exact setup below, but general recommendations for a better web-browsing experience will be useful. A nice checklist of things to try would be great! I have 600 users on a single site with an 8MB leased line. I get a lot of moans about the performance of "the internet" (ie web-browsing). What recommendations do the community have for speeding things up without just throwing more bandwidth at it? I expect I will end up buying some more, but good management tips are always valuable. My setup is this: Cisco PIX (515E) firewall on the edge of the network. It's just doing some basic NAT, and opening up a handful of ports to various bastion hosts (aka DMZ servers). The DMZ is just a switch that the servers are plugged into. ISA 2006 Enterprise array (two servers) connecting DMZ to the internal LAN, with WebSense Web Security filtering HTTP traffic so users can't look at porn or waste bandwidth on YouTube during working hours. I've done a few things - I've just switched my internal DNS over to use root hints, which halved DNS query latency from 500ms to 250ms. Well worth doing. I'm trying to cache more aggressively, but so much more of the internet is AJAXy and doesn't cache very well as compared to five years ago. Plus the 70GB of cache which felt like a lot a few years ago really isn't any more. I'm getting about 45% cache hits by number of requests, but only about 22% by size, ie larger objects are less likely to be cached. Latency seems to be part of the problem. Is that attributable to the bandwidth problem, or are there things I can look at to try to reduce latency even on heavily-loaded bandwidth?

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• IIS serving static content gives 503 at random

  - by Steffen

  We're having a few issues with our image server. It's a Win 2008 running IIS 7.5 and it only serves static content: images. It has run without issues for quite a while, until recently when we disabled Output Caching, as we noticed having it enabled meant it sent no-cache host-headers to the clients (forcing them to fetch the images from the server every time) We've read quite a bit about it, and it seems IIS just works that way - either you use Output Caching or you get to use cache host-headers. Anyway having disabled the Output Cache, we now experience random 5 minutes intervals, where all requests just get a 503 Service Unavailable. During this period the "Files cached" performance counter staggers (neither increased nor decreased) and after the period all caches are flushed. You might find it weird I talk about caching, since we disabled Output Caching. The thing is we changed the ObjectTTL parameter in registry, so we cache files for 3 minutes (which has worked very well, our Disk I/O dropped significantly) So even with Output Caching disabled, we're still caching plenty of files - if we could just get rid of the random 503 it'd be perfect :-D We don't get any messages in the Windows event log during these 503 intervals, so we're pretty stumped as to what to do. Any ideas are very welcome :-)

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• How to use most of memory available on MySQL

  - by Zilvinas

  I've got a MySQL server which has both InnoDB and MyISAM tables. InnoDB tablespace is quite small under 4 GB. MyISAM is big ~250 GB in total of which 50 GB is for indexes. Our server has 32 GB of RAM but it usually uses only ~8GB. Our key_buffer_size is only 2GB. But our key cache hit ratio is ~95%. I find it hard to believe.. Here's our key statistics: | Key_blocks_not_flushed | 1868 | | Key_blocks_unused | 109806 | | Key_blocks_used | 1714736 | | Key_read_requests | 19224818713 | | Key_reads | 60742294 | | Key_write_requests | 1607946768 | | Key_writes | 64788819 | key_cache_block_size is default at 1024. We have 52 GB's of index data and 2GB key cache is enough to get a 95% hit ratio. Is that possible? On the other side data set is 200GB and since MyISAM uses OS (Centos) caching I would expect it to use a lot more memory to cache accessed myisam data. But at this stage I see that key_buffer is completely used, our buffer pool size for innodb is 4gb and is also completely used that adds up to 6GB. Which means data is cached using just 1 GB? My question is how could I check where all the free memory could be used? How could I check if MyISAM hits OS cache for data reads instead of disk?

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• With a username passed to a script, find the user's home directory

  - by Clinton Blackmore

  I am writing a script that gets called when a user logs in and check if a certain folder exists or is a broken symlink. (This is on a Mac OS X system, but the question is purely bash). It is not elegant, and it is not working, but right now it looks like this: #!/bin/bash # Often users have a messed up cache folder -- one that was redirected # but now is just a broken symlink. This script checks to see if # the cache folder is all right, and if not, deletes it # so that the system can recreate it. USERNAME=$3 if [ "$USERNAME" == "" ] ; then echo "This script must be run at login!" >&2 exit 1 fi DIR="~$USERNAME/Library/Caches" cd $DIR || rm $DIR && echo "Removed misdirected Cache folder" && exit 0 echo "Cache folder was fine." The crux of the problem is that the tilde expansion is not working as I'd like. Let us say that I have a user named george, and that his home folder is /a/path/to/georges_home. If, at a shell, I type: cd ~george it takes me to the appropriate directory. If I type: HOME_DIR=~george echo $HOME_DIR It gives me: /a/path/to/georges_home However, if I try to use a variable, it does not work: USERNAME="george" cd ~$USERNAME -bash: cd: ~george: No such file or directory I've tried using quotes and backticks, but can't figure out how to make it expand properly. How do I make this work?

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• mcelog doesn't fails to start PUIAS 6.4 amd hardware

  - by Predrag Punosevac

  Folks, I am a total Linux n00b. I am trying to deploy mcelog on one of my computing nodes running PUIAS 6.4 (i86_64) [root@lov3 edac]# uname -a Linux lov3.mylab.org 2.6.32-358.18.1.el6.x86_64 #1 SMP Tue Aug 27 22:40:32 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux a free clone of Red Hat 6.4 on AMD hardware [root@lov3 mcelog]# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 64 On-line CPU(s) list: 0-63 Thread(s) per core: 2 Core(s) per socket: 8 Socket(s): 4 NUMA node(s): 8 Vendor ID: AuthenticAMD CPU family: 21 Model: 2 Stepping: 0 CPU MHz: 1400.000 BogoMIPS: 4999.30 Virtualization: AMD-V L1d cache: 16K L1i cache: 64K L2 cache: 2048K L3 cache: 6144K NUMA node0 CPU(s): 0-7 NUMA node1 CPU(s): 8-15 NUMA node2 CPU(s): 16-23 NUMA node3 CPU(s): 24-31 NUMA node4 CPU(s): 32-39 NUMA node5 CPU(s): 40-47 NUMA node6 CPU(s): 48-55 NUMA node7 CPU(s): 56-63 My mcelog.conf file is more or less default apart of the fact that I would like to run mcelog as a daemon and to log errors. When I start mcelog [root@lov3 mcelog]# mcelog --config-file mcelog.conf AMD Processor family 21: Please load edac_mce_amd module. However the module is present [root@lov3 mcelog]# locate edac_mce_amd.ko /lib/modules/2.6.32-358.18.1.el6.x86_64/kernel/drivers/edac/edac_mce_amd.ko /lib/modules/2.6.32-358.el6.x86_64/kernel/drivers/edac/edac_mce_amd.ko and loaded [root@lov3 edac]# lsmod | grep mce edac_mce_amd 14705 1 amd64_edac_mod Is there anything that I can do to get mcelog working? The only reference I found is this thread http://lists.centos.org/pipermail/centos/2012-November/130226.html

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• Giving two different users permissions to a dir

  - by Jason Swett

  I have a script that is run sometimes via the web, sometimes via the command line. When the script is run via web, it's run via user www-data. When it's run via command line, it's run via user jason. This script writes to a directory called cache. If I chown -R jason cache, I can run the script as jason but not www-data. This makes sense. If I chown -R www-data cache, I can run the script as www-data but not jason. This also makes sense. I tried creating a group called scripts, adding my two users, then chowning cache to scripts. I'm not really sure how to do the last part, the chowning part. The Linux command docs I've found online for this are astoundingly bad. I don't know if I explained this all that well but hopefully it's clear what I'm trying to do. Any advice would be appreciated.

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• Recompiling Nginx 1.4.3 with "--with-http_gzip_static_module" error

  - by Elijah Paul

  I'm trying to enable the 'ngx_http_gzip_static_module' module in Nginx 1.4.3 by adding the --with-http_gzip_static_module to my ./configure configuration. But I recieve the following error when i try to recompile (make): # make make -f objs/Makefile make[1]: Entering directory `/tmp/nginx-1.4.3' make[1]: *** No rule to make target `src/os/unix/ngx_gcc_atomic_x86.h', needed by `objs/src/core/nginx.o'. Stop. make[1]: Leaving directory `/tmp/nginx-1.4.3' make: *** [build] Error 2 My current config (CentOS 6.4): # nginx -V nginx version: nginx/1.4.3 built by gcc 4.4.7 20120313 (Red Hat 4.4.7-3) (GCC) TLS SNI support enabled configure arguments: --conf-path=/etc/nginx/nginx.conf --pid-path=/var/run/nginx.pid --error-log-path=/var/log/nginx/error.log --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --http-log-path=/var/log/nginx/access.log --with-http_ssl_module --prefix=/usr --add-module=./nginx-sticky-module-1.1 --add-module=./headers-more-nginx-module-0.23 i was under the impression that this was a module that just need to be 'enabled' as opposed to 'added'. What am I missing here?

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• Apache doesn't immediately notice a change in the document root

  - by Tom

  We use capistrano for website deployments and our Apache document root is a symlink to a particular code release. The deployment procedure switches the symlink from the old release to the new release as the final step of the deployment. We are migrating our webservers from real servers running RHEL 5.6 to Amazon EC2 virtual machines running Ubuntu 11.10 and the new servers are suffering from a problem where Apache doesn't immediately notice the change to it's document root when the symlink is switched. It can take a second or so (and I think I've even seen it take a couple of minutes). It's kind of like Apache has cached the physical path of the symlink for some time. Does anyone know some Apache settings I could look at to get it to "scan" for changes to it's served files quicker. Thoughts: I read that the disks on virtual machines are much slower (since they are network attached storage). Perhaps the filesystem cache somehow works differently too? If so, is there anything that can be done? The website runs PHP code. Perhaps there is some PHP config differences between RHEL and Ubuntu? I checked realpath_cache_ttl but both servers have it commented out: e.g. ; Duration of time, in seconds for which to cache realpath information for a given ; file or directory. For systems with rarely changing files, consider increasing this ; value. ; http://www.php.net/manual/en/ini.core.php#ini.realpath-cache-ttl ;realpath_cache_ttl = 120 We do use the APC opcode cache but don't think it's the issue due to experimentation. The PHP code is in different file paths for each deployment and we ensure stat=1. Here is a similar question that is very interesting: 294107 - but doesn't provide an answer for me. One solution would be to reload Apache everytime we modify the document root symlink. I'll do this if we can't find another solution.

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• .htm pages working but .aspx pages throwing errors

  - by Mike

  Our site has thousands of visitors per day but we've been receiving reports from some of our members that they are able to hit our main page, presumably because it's a .htm page, but when they click off to a .aspx page, they get an error. I've done as much research as I know how and here is what I have come up with: - We have not made any changes to IIS on our server in months. - We have a couple of customers that have been willing to work with us and provide information about their system. One customer is running Vista, the other is running XP. - We had one of the customers test both Firefox and MSIE. She gets same error in both. - One customer said, "We were able to post the profile and searched on available jobs and it worked w/ Firefox for a day, then it just quit working...we did not change any settings to Firefox after we posted the profile." - We asked the customer to clear their cache and try again. They responded with, "We just cleared the cache and got the same error; btw, I periodically clear the cache -- almost every day." Summary We have thousands of customers that hit our site with no problem. We can't reproduce these errors. These customers are getting the same error in different browsers. They are only getting the error on .aspx pages. They still get the error after clearing their cache. We would appreciate any thoughts on what other questions we could ask these customers or thoughts on how we can further troubleshoot this problem.

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