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• Source of (programmer) inefficiency

  - by Daniel

  I am interested to gain a better insight about the possible reasons of personal inefficiency as programmers (and only in programming) due to – simply - our own errors (because we are humans – well, almost all of us). I am not interested in how much we are productive or in how many adjustements the customer asks for when the work is done, but where and how each of us spend that part of its time in tasks that are unproductive and there is no one to blame except ourselves. Excluding ego - feeding and / or self – gratification, what I am trying to get (for all of us) is: what are the common issues eating our time; insight on reasons for that issues; identify simple way for us, personally (not delegating actions to other or our organizations), to correct our own problems. Please, do not think in academic terms but aim at the opportunity to compare our daily experiences and understand what are and how we try to fix our personal deficiencies. If you are interested to respond to this post, please: integrate the list if you see something important (or obvious) missing; highlight or name honestly your first issue tellng the way you try to address and solve your issue acting on yourself and yourself only in a sort of "continuous quality improving" My criteria for accepting the answer is: choose the best solution (feasibility and utility) to fix one (or more) of the problems of the list. Of course, selecting an error is not a vote on our skills: maybe we are hyper professional programmers and we lose ten minutes only every year or we are terribly inefficient, losing a couple of days a week: reasons for inefficiency could be really the same - but in a different scale. A possible list: Plain error in the names (variables, functions). Inability to see the obvious in your code. Misreading. Lack of concentration. Trying to use a technology you have not mastered. Errors with data types. Time required to understand your previous code or your documentation. Trying to do something more than requested because you enjoy it Using solutions more complicated than required because you enjoy it. Plain logical errors. Errors due to your fault in communications. Distraction My first personal issue: "Trying to use a technology you do not master." I have to use daily several technologies and I often need to spend significant time correcting code because my assumptions were plainly wrong. Reasons for this: production needs put high pressure and make difficult to find the time to learn. I try to address this reading technical books - as many as I can - even if this actually consumes a lot of time.

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• Naming Convention for Dedicated Thread Locking objects

  - by Chris Sinclair

  A relatively minor question, but I haven't been able to find official documentation or even blog opinion/discussions on it. Simply put: when I have a private object whose sole purpose is to serve for private lock, what do I name that object? class MyClass { private object LockingObject = new object(); void DoSomething() { lock(LockingObject) { //do something } } } What should we name LockingObject here? Also consider not just the name of the variable but how it looks in-code when locking. I've seen various examples, but seemingly no solid go-to advice: Plenty of usages of SyncRoot (and variations such as _syncRoot). Code Sample: lock(SyncRoot), lock(_syncRoot) This appears to be influenced by VB's equivalent SyncLock statement, the SyncRoot property that exists on some of the ICollection classes and part of some kind of SyncRoot design pattern (which arguably is a bad idea) Being in a C# context, not sure if I'd want to have a VBish naming. Even worse, in VB naming the variable the same as the keyword. Not sure if this would be a source of confusion or not. thisLock and lockThis from the MSDN articles: C# lock Statement, VB SyncLock Statement Code Sample: lock(thisLock), lock(lockThis) Not sure if these were named minimally purely for the example or not Kind of weird if we're using this within a static class/method. Several usages of PadLock (of varying casing) Code Sample: lock(PadLock), lock(padlock) Not bad, but my only beef is it unsurprisingly invokes the image of a physical "padlock" which I tend to not associate with the abstract threading concept. Naming the lock based on what it's intending to lock Code Sample: lock(messagesLock), lock(DictionaryLock), lock(commandQueueLock) In the VB SyncRoot MSDN page example, it has a simpleMessageList example with a private messagesLock object I don't think it's a good idea to name the lock against the type you're locking around ("DictionaryLock") as that's an implementation detail that may change. I prefer naming around the concept/object you're locking ("messagesLock" or "commandQueueLock") Interestingly, I very rarely see this naming convention for locking objects in code samples online or on StackOverflow. Question: What's your opinion generally about naming private locking objects? Recently, I've started naming them ThreadLock (so kinda like option 3), but I'm finding myself questioning that name. I'm frequently using this locking pattern (in the code sample provided above) throughout my applications so I thought it might make sense to get a more professional opinion/discussion about a solid naming convention for them. Thanks!

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• Stagnating in programming

  - by Coder

  Time after time this question came up in my mind, but up until today I wasn't thinking about it much. I have been programming for maybe around 8 years now, and for the last two years it seems I'm not as keen to pick up new technologies anymore. Maybe that's a burnout or something, but I'd say it's experience and what I like, that's stopping me from running after the latest and greatest. I'm C++ developer, by this I mean, I love close to metal programming. I have no problems tracing problems through assembly, using tools like WinDbg or HexView. When I use constructs, I think about how they are realized underneath, how the bits are set and unset under the hood. I love battling with complex threading problems and doing everything hardcore way, even by hand if the regular solutions seem half baked. But I also love the C++0x stuff, and use it a lot. And all C++ code as long as it's not cumbersome compared to C counterparts, sometimes I also fall back to sort of "Super C" if the C++ way is ugly. And then there are all other developers who seem to be way more forward looking, .Net 4.0 MVC, WPF, all those Microsoft X#s, LINQ languages, XML and XSLT, mobile devices and so on. I have done a considerable amount of .NET, SQL, ASPX programming, but the further I go, the less I want to try those technologies. Is that bad? Almost every day I hear people saying that managed code is the only way forward, WPF is the way to go. I hear that C++ is godawful, and you can't code anything in it that's somewhat stable. But I don't buy it. With the experience I have, and the knowledge of how native code is compiled and executes, I can say I find it extremely rare that C++ code is unstable, or leaks, or causes crashes that takes more than 30 seconds to identify and fix. And to tell the truth, I've seen enough problems with other "cool" languages that I'd say C++ is even more stable and production proof than the safe languages, at least for me. The only thing that scares me in C++ is new frameworks, I don't trust them, and I use them extra sparingly. STL - yes, ATL - very sparingly, everything else... Well, not very keen on it. Most huge problems I've ran into, all were related to frameworks, not the language itself. Some overrided operator here, bad hierarchy there, poor class design here, mystical castings there. Other than that, C/C++ (yes, I use them together) still seems a very controlled and stable way to develop applications. Am I stagnating? Should I switch a profession, or force myself in all that marketing hype? Are there more developers who feel the same way?

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• Windows Desktop Virtualization Gets Easier

  - by andrewbrust

  This past Thursday, Microsoft announced that Windows (7) Virtual PC (WVPC) and its XP Mode feature would no longer require hardware assisted virtualization (HAV).  That means any PC running Windows 7 Pro, or higher, can now run this software.  And that’s a great thing because, as I noted in a post almost five month ago, determining whether a given PC you might be planning to buy actually offers HAV can be extremely difficult.  That meant even dedicated, sophisticated PC users, with a budget for new hardware, might be blocked from using this technology.  And that was just plain silly. One of the features offered by WVPC, and utilized heavily by XP Mode, is the concept of virtual applications: apps within a guest VM that can actually run within the host’s desktop environment.  I find this feature so powerful that my February Redmond Review column entertained the notion of a future version of Windows that runs all applications in this manner. The elimination of the HAV requirement for XP Mode and WVPC was just one of many virtualization-related announcements Microsoft made on Thursday.  And, interestingly, most of the others were also desktop-related, rather than server-related.  This is a welcome change from the multi-year period in which Microsoft enhanced its server virtualization lineup (in Hyper-V) and let the desktop platform fester.  Microsoft now seems to understand desktop virtualization is in high-demand and strengthens the Windows franchise.  As I explained in the column, even cloud computing can have a desktop spin if desktop virtualization is part of the equation. One company that knows this well is Citrix, and a closer alliance between Microsoft and Citrix was one of the many announcements from Thursday.  In fact, there’s a whole Web site dedicated to the alliance at http://www.citrixandmicrosoft.com/. I’d love to see virtual applications and entire virtual desktops offered as Azure-branded services.  This could allow me to run, for example, the full Office client on a variety of desktops I might use, and for large organizations it could easily reduce the expense, burden and duration of the deployment cycle for new versions of Office.  Business Intelligence providers, including my own firm, twentysix New York, would find great relief in enabling their customers to run the newest version of Excel, with the latest BI capabilities, instead of having to wait the requisite two to three years it takes for many Fortune 500 customers to upgrade. Microsoft should do more, and faster.  WVPC still does not support 64-bit guest images, even on 64-bit hosts.  That needs to be fixed.  File access from the guest to the host needs to be improved (right now, it’s done through Terminal Services/Remote Desktop file sharing, and it’s slow) and VM load times need to be significantly reduced before virtualized apps can become the norm.  (I suppose the advance of solid state drive technology will help there.) I do think these improvements will come, because Microsoft is focused on the virtual desktop now.  And that’s a smart focus to have.

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• Subterranean IL: Volatile

  - by Simon Cooper

  This time, we'll be having a look at the volatile. prefix instruction, and one of the differences between volatile in IL and C#. The volatile. prefix volatile is a tricky one, as there's varying levels of documentation on it. From what I can see, it has two effects: It prevents caching of the load or store value; rather than reading or writing to a cached version of the memory location (say, the processor register or cache), it forces the value to be loaded or stored at the 'actual' memory location, so it is then immediately visible to other threads. It forces a memory barrier at the prefixed instruction. This ensures instructions don't get re-ordered around the volatile instruction. This is slightly more complicated than it first seems, and only seems to matter on certain architectures. For more details, Joe Duffy has a blog post going into the details. For this post, I'll be concentrating on the first aspect of volatile. Caching field accesses To demonstrate this, I created a simple multithreaded IL program. It boils down to the following code: .class public Holder { .field public static class Holder holder .field public bool stop .method public static specialname void .cctor() { newobj instance void Holder::.ctor() stsfld class Holder Holder::holder ret }}.method private static void Main() { .entrypoint // Thread t = new Thread(new ThreadStart(DoWork)) // t.Start() // Thread.Sleep(2000) // Console.WriteLine("Stopping thread...") ldsfld class Holder Holder::holder ldc.i4.1 stfld bool Holder::stop call instance void [mscorlib]System.Threading.Thread::Join() ret}.method private static void DoWork() { ldsfld class Holder Holder::holder // while (!Holder.holder.stop) {} DoWork: dup ldfld bool Holder::stop brfalse DoWork pop ret} If you compile and run this code, you'll find that the call to Thread.Join() never returns - the DoWork spinlock is reading a cached version of Holder.stop, which is never being updated with the new value set by the Main method. Adding volatile to the ldfld fixes this: dupvolatile.ldfld bool Holder::stopbrfalse DoWork The volatile ldfld forces the field access to read direct from heap memory, which is then updated by the main thread, rather than using a cached copy. volatile in C# This highlights one of the differences between IL and C#. In IL, volatile only applies to the prefixed instruction, whereas in C#, volatile is specified on a field to indicate that all accesses to that field should be volatile (interestingly, there's no mention of the 'no caching' aspect of volatile in the C# spec; it only focuses on the memory barrier aspect). Furthermore, this information needs to be stored within the assembly somehow, as such a field might be accessed directly from outside the assembly, but there's no concept of a 'volatile field' in IL! How this information is stored with the field will be the subject of my next post.

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• Using INotifyPropertyChanged in background threads

  - by digitaldias

  Following up on a previous blog post where I exemplify databinding to objects, a reader was having some trouble with getting the UI to update. Here’s the rough UI: The idea is, when pressing Start, a background worker process starts ticking at the specified interval, then proceeds to increment the databound Elapsed value. The problem is that event propagation is limeted to current thread, meaning, you fire an event in one thread, then other threads of the same application will not catch it. The Code behind So, somewhere in my ViewModel, I have a corresponding bethod Start that initiates a background worker, for example: public void Start( ) { BackgroundWorker backgroundWorker = new BackgroundWorker( ); backgroundWorker.DoWork += IncrementTimerValue; backgroundWorker.RunWorkerAsync( ); } protected void IncrementTimerValue( object sender, DoWorkEventArgs e ) { do { if( this.ElapsedMs == 100 ) this.ElapsedMs = 0; else this.ElapsedMs++; }while( true ); } Assuming that there is a property: public int ElapsedMs { get { return _elapsedMs; } set { if( _elapsedMs == value ) return; _elapsedMs = value; NotifyThatPropertyChanged( "ElapsedMs" ); } } The above code will not work. If you step into this code in debug, you will find that INotifyPropertyChanged is called, but it does so in a different thread, and thus the UI never catches it, and does not update. One solution Knowing that the background thread updates the ElapsedMs member gives me a chance to activate BackgroundWorker class’ progress reporting mechanism to simply alert the main thread that something has happened, and that it is probably a good idea to refresh the ElapsedMs binding. public void Start( ) { BackgroundWorker backgroundWorker = new BackgroundWorker( ); backgroundWorker.DoWork += IncrementTimerValue; // Listen for progress report events backgroundWorker.WorkerReportsProgress = true; // Tell the UI that ElapsedMs needs to update backgroundWorker.RunWorkerCompleted += ( sender, e ) => { NotifyThatPropertyChanged( "ElapsedMs" ) }; backgroundWorker.RunWorkerAsync( ); } protected void IncrementTimerValue( object sender, DoWorkEventArgs e ) { do { if( this.ElapsedMs == 100 ) this.ElapsedMs = 0; else this.ElapsedMs++; // report any progress ( sender as BackgroundWorker ).ReportProgress( 0 ); }while( true ); } What happens above now is that I’ve used the BackgroundWorker cross thread mechanism to alert me of when it is ok for the UI to update it’s ElapsedMs field. Because the property itself is being updated in a different thread, I’m removing the NotifyThatPropertyChanged call from it’s Set method, and moving that responsability to the anonymous method that I created in the Start method. This is one way of solving the issue of having a background thread update your UI. I would be happy to hear of other cross-threading mechanisms for working in a MCP/MVC/MVVM pattern.

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• SharePoint Thoughts

  - by Tim Murphy

  I was listening to .NET Rocks episode #713 and it got me thinking about a number of SharePoint related topics. I have been working with SharePoint since the 2001 product came out and have watched it evolve over the years.  Today SharePoint is one of the most powerful and flexible products in the market.  Of course that doesn’t mean there isn’t room for improvement (a lot of improvement in fact) and with much power comes much responsibility. My main gripe these days is that you have to develop on a server instance.  This adds a real barrier to entry for developers.  You either have to run VMWare or Hyper-V on your developer machine or actually develop on your dev server for most tasks.  Yes, there is a way to setup a Windows 7 machine with the SharePoint components but it is very hackish. Beyond that the tools in VS2010 are a great leap forward from past generations.  Not requiring a separate package creation tool is not the least of the improvements.  Better workflow and web part development have also eased the burden of many developers. The other thing the show brought up in my thoughts was more around usage.  Users want to be able to self server everything without regard to what affect that has on leveraging their data from a corporate perspective.  My coworkers who work on Lotus Notes ask why the user can’t just do what ever they want? Part of the reason is that those features have not been built, but the other part is that giving them those features is often like giving an infant a loaded hand gun.  You can do it but it doesn’t make it the smart thing to do. As with any tool that is going to be used in the enterprise it should be subject to governance.  If controls are not in place as they said in the episode of DNR the document libraries and I believe SharePoint in general starts to look as disarrayed and unusable as a shared drive.  Consider these factors before giving into every whim of the users.  You should be able to explain to them the tradeoffs of giving them full control versus being able to leverage the information they collect to the benefit of the organization. These are just a couple of the thoughts that were triggered by the show.  I’m sure there are more discussions that can be had.  Feel free to leave your comments about the pros and cons of SharePoint. del.icio.us Tags: .NET Rocks,SharePoint,software development

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• Why would more CPU cores on virtual machine slow compile times?

  - by Sid

  [edit#2] If anyone from VMWare can hit me up with a copy of VMWare Fusion, I'd be more than happy to do the same as a VirtualBox vs VMWare comparison. Somehow I suspect the VMWare hypervisor will be better tuned for hyperthreading (see my answer too) I'm seeing something curious. As I increase the number of cores on my Windows 7 x64 virtual machine, the overall compile time increases instead of decreasing. Compiling is usually very well suited for parallel processing as in the middle part (post dependency mapping) you can simply call a compiler instance on each of your .c/.cpp/.cs/whatever file to build partial objects for the linker to take over. So I would have imagined that compiling would actually scale very well with # of cores. But what I'm seeing is: 8 cores: 1.89 sec 4 cores: 1.33 sec 2 cores: 1.24 sec 1 core: 1.15 sec Is this simply a design artifact due to a particular vendor's hypervisor implementation (type2:virtualbox in my case) or something more pervasive across more VMs to make hypervisor implementations more simpler? With so many factors, I seem to be able to make arguments both for and against this behavior - so if someone knows more about this than me, I'd be curious to read your answer. Thanks Sid [edit:addressing comments] @MartinBeckett: Cold compiles were discarded. @MonsterTruck: Couldn't find an opensource project to compile directly. Would be great but can't screwup my dev env right now. @Mr Lister, @philosodad: Have 8 hw threads, using VirtualBox, so should be 1:1 mapping without emulation @Thorbjorn: I have 6.5GB for the VM and a smallish VS2012 project - it's quite unlikely that I'm swapping in/out trashing the page file. @All: If someone can point to an open source VS2010/VS2012 project, that might be a better community reference than my (proprietary) VS2012 project. Orchard and DNN seem to need environment tweaking to compile in VS2012. I really would like to see if someone with VMWare Fusion also sees this (for VMWare vs VirtualBox compartmentalization) Test details: Hardware: Macbook Pro Retina CPU : Core i7 @ 2.3Ghz (quad core, hyper threaded = 8 cores in windows task manager) Memory : 16 GB Disk : 256GB SSD Host OS: Mac OS X 10.8 VM type: VirtualBox 4.1.18 (type 2 hypervisor) Guest OS: Windows 7 x64 SP1 Compiler: VS2012 compiling a solution with 3 C# Azure projects Compile times measure by VS2012 plugin called 'VSCommands' All tests run 5 times, first 2 runs discarded, last 3 averaged

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• How to customize web app template admintasia? [closed]

  - by Balaji

  The below is my requirement, Login page Login page for all To search whether a user-id & password are a valid or not. To identify whether the user is of which category, namely, Admin, Manager, User. Redirect the page accordingly for respective user with their privilege. Admin - Manager – User Forgot password, Get username of email address and send the credential by validating the user input. Login & Operations Admin Display all submitted forms by admin, manager and user Tabs – Submissions, Mange form & Manage users. Submissions There must be a ‘sort’, listing, admin, manager and user. Username column should hyper link to edit the user account There must be a ‘sort’ option as ‘ALL’ while this option is chosen; the admin must be capable to view, as below, If Admin selects ‘admin’ from dropdown all submitted forms by admin user accounts should display and this operation is similar for the manager account as above. Manage forms, Agent Name, Credit Site, Lenders, Type of Loan, No Scores and Type Of Card Add, edit, update, delete Active and inactive Always display active records. Manage users, Create a user, User account type, (Admin or Manager or User) User email option Edit & update user, Change username Prompt: are you sure? Change password Prompt: are you sure? Delete user Prompt: are you sure you want to delete? Edit – value – this value should be updated in the common form used by all type of users. Manager Display all submitted forms by managers and users. Submissions and Manage users, Submissions Operations Admin Create filter values, admin, manager and user. Edit - filter values, admin, manager and user. Delete filter values, admin, manager and user. View. Manager Create a user only. View forms. User view and/ or submit form only Logout Log out for all. Prompt: Are you sure you want to log-out. I have downloaded adminstasia. How do I customize this template for the above requirement? The installation is same alike if you check this URL, http://www.admintasia.com/demo/

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• Unintentional run-in with C# thread concurrency

  - by geekrutherford

  For the first time today we began conducting load testing on a ASP.NET application already in production. Obviously you would normally want to load test prior to releasing to a production environment, but that isn't the point here.   We ran a test which simulated 5 users hitting the application doing the same actions simultaneously. The first few pages visited seemed fine and then things just hung for a while before the test failed. While the test was running I was viewing the performance counters on the server noting that the CPU was consistently pegged at 100% until the testing tool gave up.   Fortunately the application logs all exceptions including those unhandled to the database (thanks to log4net). I checked the log and low and behold the error was:   System.ArgumentException: An item with the same key has already been added. (The rest of the stack trace intentionally omitted)   Since the code was running with debug on the line number where the exception occured was also provided. I began inspecting the code and almost immediately it hit me, the section of code responsible for the exception is trying to initialize a static class. My next question was how is this code being hit multiple times when I have a rudimentary check already in place to prevent this kind of thing (i.e. a check on a public variable of the static class before entering the initializing routine). The answer...the check fails because the value is not set before other threads have already made it through.   Not being one who consistently works with threading I wasn't quite sure how to handle this problem. Fortunately a co-worker recalled having to lock a section of code in the past but couldn't recall exactly how. After a quick search on Google the solution is as follows:   Object objLock = new Object(); lock(objLock) { //logic requiring lock }   The lock statement takes an object and tells the .NET runtime that the current thread has exclusive access while the code within brackets is executing. Once the code completes, the lock is released for another thread to utilize.   In my case, I only need to execute the inner code once to initialize my static class. So within the brackets I have a check on a public variable to prevent it from being initialized again.

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• Multi-threaded JOGL Problem

  - by moeabdol

  I'm writing a simple OpenGL application in Java that implements the Monte Carlo method for estimating the value of PI. The method is pretty easy. Simply, you draw a circle inside a unit square and then plot random points over the scene. Now, for each point that is inside the circle you increment the counter for in points. After determining for all the random points wither they are inside the circle or not you divide the number of in points over the total number of points you have plotted all multiplied by 4 to get an estimation of PI. It goes something like this PI = (inPoints / totalPoints) * 4. This is because mathematically the ratio of a circle's area to a square's area is PI/4, so when we multiply it by 4 we get PI. My problem doesn't lie in the algorithm itself; however, I'm having problems trying to plot the points as they are being generated instead of just plotting everything at once when the program finishes executing. I want to give the application a sense of real-time display where the user would see the points as they are being plotted. I'm a beginner at OpenGL and I'm pretty sure there is a multi-threading feature built into it. Non the less, I tried to manually create my own thread. Each worker thread plots one point at a time. Following is the psudo-code: /* this part of the code exists in display() method in MyCanvas.java which extends GLCanvas and implements GLEventListener */ // main loop for(int i = 0; i < number_of_points; i++){ RandomGenerator random = new RandomGenerator(); float x = random.nextFloat(); float y = random.nextFloat(); Thread pointThread = new Thread(new PointThread(x, y)); } gl.glFlush(); /* this part of the code exists in run() method in PointThread.java which implements Runnable */ void run(){ try{ gl.glPushMatrix(); gl.glBegin(GL2.GL_POINTS); if(pointIsIn) gl.glColor3f(1.0f, 0.0f, 0.0f); // red point else gl.glColor3f(0.0f, 0.0f, 1.0f); // blue point gl.glVertex3f(x, y, 0.0f); // coordinates gl.glEnd(); gl.glPopMatrix(); }catch(Exception e){ } } I'm not sure if my approach to solving this issue is correct. I hope you guys can help me out. Thanks.

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• Windows Server 2008 R2 Server Manager not working -> mmc.exe crashes with System.IO.FileNotFoundException

  - by Aleja_Vigo

  Since some days ago I can't run the Server Manager, it fails like this: Descripción: Stopped working Firma con problemas: Nombre del evento de problema: CLR20r3 Firma del problema 01: mmc.exe Firma del problema 02: 6.1.7600.16385 Firma del problema 03: 4a5bc808 Firma del problema 04: System.Management Firma del problema 05: 2.0.0.0 Firma del problema 06: 4ca2baf0 Firma del problema 07: 32f Firma del problema 08: 12b Firma del problema 09: System.IO.FileNotFoundException Versión del sistema operativo: 6.1.7601.2.1.0.272.7 There are other strange syntoms in the SO: Hyper-V stopped working as well, fails to load any VM information The desktop icons rearrange themselves all the time, and always on boot, after I move them. I use now an app that remembers their position to restore it... Windows Update service dissapeared, along with BITS service, I managed to recover them and installed all updates availables today I'm going nuts looking for information about these errors. Solutions that didn't work: sfc /scannow Doesn't complain about anything All windows updates applied (after recovering missing Windows Update) ServerManager.log: Only one error all the time: Error (Id=0) System.Runtime.InteropServices.COMException (0x800706D9): No hay más extremos disponibles desde el asignador de extremos. (Excepción de HRESULT: 0x800706D9) en Microsoft.Windows.ServerManager.NativeMethods.INetFwPolicy2.IsRuleGroupCurrentlyEnabled(String group) en Microsoft.Windows.ServerManager.DirectResult.GetRemoteManagementEnabled() In english : "There are no more endpoints available from the endpoint mapper" Where could I see which is the infamous file that mmc.exe is looking for in that System.IO.FileNotFoundException?? Please, any light on this would be much appreciated...

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• WmiPrvSE memory leak on Windows 2008 *R2*

  - by MichaelGG

  I've seen references on Windows 2008 to WmiPrvSE leaks, but nothing about Windows 2008 R2. We're running R2 on top of Hyper-V (2008). We are also running NSClient++ for monitoring from opsview. Over time, WmiPrvSE.exe starts to use a lot of memory, causing memory alert issues (less than 10% free). VM has 2GB, WmiPrvSE consumes up to 500-600MB before I kill it. Killing the process doesn't seem to have any negative effect; it starts up again and I haven't noticed any problems. But after a day or two, it's back in the same situation. Any ideas on what to do? Resource Monitor doesn't show any Disk or Network IO by WmiPrvSE.exe. Just slowly climbing private memory... Edited to add: We aren't running clustering, or Windows System Resource Manager. The only regular WMI user I can guess is NSClient++, but we don't seem to have this problem on other servers.

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• Windows web server and SQL Server on same dedicated server

  - by asinc

  I'm currently trying to decide on the best approach to handle hosting a few moderate traffic websites for production e-commerce and online applications. We'd like to move to a dedicated server and are looking at this as the most likely machine: Quad Core Intel Core2Quad Q9550 Processor, 2.83 Ghz X 4, 4 GB Kingston Ram This would run Windows Web Server 2008 R2 x64 and potentially also Sql Server Web 2008 and SmarterMail server. Given that we already pay for a high-end VPS for development, testing, shared version control we'd like to avoid going with two servers for production. We'd like to avoid using shared sql server hosting and have thought of using the development server as the database server as an option too - but potentially a security risk due to use for development by internal and contract users. The questions are: - Do you feel there would be performance degradation by running this on the same machine? - Are there significant issues to be concerned about if we do this? We understand that best practice would be to run separate db and app servers but the volume of traffic is currently not that high and adding another server just for database is currently too costly. - What are others doing out there? Alternatively, would you recommend instead going with two separate VPS servers with 2GB RAM each on Hyper-v which would be about the same cost as the single dedicated server above? Thanks!

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• Word 2007 crashes on Server 2008 R2 terminal services

  - by John Rennie

  We are finding that Word 2007 (with SP2) crashes when used on a Windows 2008 R2 terminal server. Typically it crashes when you click File/Open or File/Save, but not every time. Maybe one time in four, and just to be really confusing, on a test server in my office I can't make it crash. I have just today set up a brand new shiny 2k8 R2 terminal server with as simple a setup as possible, e.g. no anti-virus to confuse things, and we're still seeing crashes. My question is has anyone else seen this, and if so any clues on what's happening? We have a support case open with Microsoft, and the MS support engineer has conceded it's happening, but has so far been unable to find the reason. On possible factor is that all the 2k8 R2 terminal servers I've seen this on have been Hyper-V VMs (running on a 2k8 R2 host). I'm about to put in a physical 2k8 R2 terminal server at the customer where we're seeing the most crashes, in case this is relevant. More news soon. Sorry if this posting seems a bit vague, but this has just bitten us and is causing a lot of pain and sleepless nights :-( If anyone can help I'll be enormously grateful! Update: we've given up and gone back to 2008 pre-R2. Both Office 2003 and 2007 both work fine now. I think there are some problems with TS in R2. Googling doesn't find much, so I thought it was just me. It's reassuring to find that someone else has seen the same problem.

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• How to safely remove a USB device from 2008 Core server?

  - by Qwerty

  I have a Hyper-V Core server 2008 that I administer via command line and remote tools. We have now got a new backup system in place and it involves me connecting an External USB drive (G:) to backup system state files. My question is how should I safely remove the drive for its weekly offsite swap? I've tried using the devcon tool however it just says the 'removal failed with no devices removed' with no other explanation. I have noticed that there isnt a readily available x64 version of devcon and that might be the cause of the problem. (I have read of people downloading a amd64 version but I have not located it myself, if someone knows where it is please let me know). The devcon command worked on my old 2003 x86 server with the command: devcon remove *3200AVJ_EXTERNAL* I have also looked at using fsutil volume dismount g: but it doesn't seem to work as G: is still listed as a connected volume. I have checked that the volume is not in use via remote tools and the net file command. Both show no open files in the G:\ volume. This could be a decent substitute as it might be used to flush any remaining IO to the volume can anyone clarify? Thanks in advance.

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• Windows 7 XP Mode disable time sync

  - by Oskar Duveborn

  So I've tried the trick from Virtual PC 2007, adding the following section to the vmc configuration file: <components> <host_time_sync> <enabled type="boolean">false</enabled> </host_time_sync> </components> Later someone suggested VPC doesn't want the components level so added this instead: <host_time_sync> <enabled type="boolean">false</enabled> <frequency type="integer">15</frequency> <threshold type="integer">10</threshold> </host_time_sync> When I start up XP Mode (Microsoft Virtual PC) it completely ignores any of these two configuration changes and if I change the clock it's instantly reset to the host time again. I've also obviously disabled the Windows Time service but as it's not joined to a domain or set up with a source it shouldn't be involved anyway. I need to test an application over a few midnight passes and thought the XP Mode machine would be perfect, so I didn't have to mess with my workstation clock... is there any way to get the VPC guest to not sync time with the host? This is easy in Hyper-V ;p

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• iSCSI errors continue after removing inaccessible target portal

  - by Ansgar Wiechers

  By mistake I entered an iSCSI target portal address in the iSCSI Initiator on one of our virtual servers that does not have an address in the network range used for iSCSI. This caused the following errors/warnings to appear in the eventlog: Log Name: System Source: MSiSCSI Event ID: 113 Level: Warning Description: iSCSI discovery via SendTargets failed with error code 0xefff0003 to target portal *192.168.23.42 0003260 Root\ISCSIPRT\0000_0 . Log Name: System Source: iScsiPrt Event ID: 1 Level: Error Description: Initiator failed to connect to the target. Target IP address and TCP Port number are given in dump data. Log Name: System Source: iScsiPrt Event ID: 70 Level: Error Description: Error occurred when processing iSCSI logon request. The request was not retried. Error status is given in the dump data. So far that's expected beahvior, so I removed the portal from the iSCSI Initiator as described in MSKB 976072. However, the errors/warnings keep appearing every hour, even though neither iSCSI Initiator GUI nor iscscli show any portals: C:\>iscsicli ListTargetPortals Microsoft iSCSI Initiator Version 6.1 Build 7601 The operation completed successfully. The problem persists after rebooting the server. Uninstalling the Microsoft iSCSI Initiator device via devmgmt.msc as well as changing the Initiator parameters like this: [HKLM\SYSTEM\CurrentControlSet\Control\Class\{4D36E97B-E325-11CE-BFC1-08002BE10318}] "MaxPendingRequests"=dword:00000001 "MaxConnectionRetries"=dword:00000001 "MaxRequestHoldTime"=dword:00000005 didn't help either. Each change was followed by a reboot. Disabling the device does prevent the errors/warnings from re-appearing, of course, but I'd rather not have to resort to this. How can I prevent those errors and warnings from appearing (short of disabling the initiator device or re-installing the server)? What am I missing? Environment: The virtual machine runs on a Hyper-V cluster managed by SCVMM 2012. Hosts and guests run Windows Server 2008 R2 SP1. The physical machines are Dell PowerEdge M710HD blades.

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• New Dell PE R710 - Storage Question

  - by rihatum

  Hi All, Dell PE R710, received from Dell in the following state : Windows Disk 0 1800GB ( Volume C & D ) Windows Disk 1 526 GB (Volume E ) Perc6i Integrated Raid Controller 6 x 500GB Nearline SAS 7200RPM HDDs Raid 5 Configuration with two Virtual Disks I have installed Dell open Manage and it shows the following : Virtual Disk 0 - State : Background Initialization ( 7% ) Virtual Disk 1 - State : Background Initialization ( 25% ) Now when I click on Virtual Disk 0 it shows me all 6 Disks and the same happens when I click on Virtual Disk 1 it displays all 6 disks. But when I click on Storage Perc6i Connector 0 I get 4 Physical disks with the following numbers : Physical Disk 0:0:0 Physical Disk 0:0:1 Physical Disk 0:0:2 Physical Disk 0:0:3 When I click on Storage Perc6i Connector 1 I get 2 Physical Disks Listed in the following way : Physical Disk 1:0:4 Physical Disk 1:0:5 I am a little confused in this description, does this 1:0:4 interprets to Controller1, Disk4. Does this integrated raid card have two controllers coming out of it ? Also, When I first switched on the machine, the boot partition was showing 1GB Available out of 40GB, now its showing 38GB available out of 40GB. Is this because the Virtual Disks are still Initializing ? Any recommendations or suggestions ? Also, this server have 6 x 500GB NearLine SAS Hard drives, what would be a good raid config ? We are planning to use it for Hyper-V with quite a few (7 or 8) virtual servers, your suggestions would be helpful. Also, while the virtual disks are in a initialization state, can I destroy and re-create the raid configuration ? I would have to do it at the BIOS CTRL-M ? Thanks and Regards

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• Silverlight 4 + WCF RIA - Data Service Design Best Practices

  - by Chadd Nervig

  Hey all. I realize this is a rather long question, but I'd really appreciate any help from anyone experienced with RIA services. Thanks! I'm working on a Silverlight 4 app that views data from the server. I'm relatively inexperienced with RIA Services, so have been working through the tasks of getting the data I need down to the client, but every new piece I add to the puzzle seems to be more and more problematic. I feel like I'm missing some basic concepts here, and it seems like I'm just 'hacking' pieces on, in time-consuming ways, each one breaking the previous ones as I try to add them. I'd love to get the feedback of developers experienced with RIA services, to figure out the intended way to do what I'm trying to do. Let me lay out what I'm trying to do: First, the data. The source of this data is a variety of sources, primarily created by a shared library which reads data from our database, and exposes it as POCOs (Plain Old CLR Objects). I'm creating my own POCOs to represent the different types of data I need to pass between server and client. DataA - This app is for viewing a certain type of data, lets call DataA, in near-realtime. Every 3 minutes, the client should pull data down from the server, of all the new DataA since the last time it requested data. DataB - Users can view the DataA objects in the app, and may select one of them from the list, which displays additional details about that DataA. I'm bringing these extra details down from the server as DataB. DataC - One of the things that DataB contains is a history of a couple important values over time. I'm calling each data point of this history a DataC object, and each DataB object contains many DataCs. The Data Model - On the server side, I have a single DomainService: [EnableClientAccess] public class MyDomainService : DomainService { public IEnumerable<DataA> GetDataA(DateTime? startDate) { /*Pieces together the DataAs that have been created since startDate, and returns them*/ } public DataB GetDataB(int dataAID) { /*Looks up the extended info for that dataAID, constructs a new DataB with that DataA's data, plus the extended info (with multiple DataCs in a List<DataC> property on the DataB), and returns it*/ } //Not exactly sure why these are here, but I think it //wouldn't compile without them for some reason? The data //is entirely read-only, so I don't need to update. public void UpdateDataA(DataA dataA) { throw new NotSupportedException(); } public void UpdateDataB(DataB dataB) { throw new NotSupportedException(); } } The classes for DataA/B/C look like this: [KnownType(typeof(DataB))] public partial class DataA { [Key] [DataMember] public int DataAID { get; set; } [DataMember] public decimal MyDecimalA { get; set; } [DataMember] public string MyStringA { get; set; } [DataMember] public DataTime MyDateTimeA { get; set; } } public partial class DataB : DataA { [Key] [DataMember] public int DataAID { get; set; } [DataMember] public decimal MyDecimalB { get; set; } [DataMember] public string MyStringB { get; set; } [Include] //I don't know which of these, if any, I need? [Composition] [Association("DataAToC","DataAID","DataAID")] public List<DataC> DataCs { get; set; } } public partial class DataC { [Key] [DataMember] public int DataAID { get; set; } [Key] [DataMember] public DateTime Timestamp { get; set; } [DataMember] public decimal MyHistoricDecimal { get; set; } } I guess a big question I have here is... Should I be using Entities instead of POCOs? Are my classes constructed correctly to be able to pass the data down correctly? Should I be using Invoke methods instead of Query (Get) methods on the DomainService? On the client side, I'm having a number of issues. Surprisingly, one of my biggest ones has been threading. I didn't expect there to be so many threading issues with MyDomainContext. What I've learned is that you only seem to be able to create MyDomainContextObjects on the UI thread, all of the queries you can make are done asynchronously only, and that if you try to fake doing it synchronously by blocking the calling thread until the LoadOperation finishes, you have to do so on a background thread, since it uses the UI thread to make the query. So here's what I've got so far. The app should display a stream of the DataA objects, spreading each 3min chunk of them over the next 3min (so they end up displayed 3min after the occurred, looking like a continuous stream, but only have to be downloaded in 3min bursts). To do this, the main form initializes, creates a private MyDomainContext, and starts up a background worker, which continuously loops in a while(true). On each loop, it checks if it has any DataAs left over to display. If so, it displays that Data, and Thread.Sleep()s until the next DataA is scheduled to be displayed. If it's out of data, it queries for more, using the following methods: public DataA[] GetDataAs(DateTime? startDate) { _loadOperationGetDataACompletion = new AutoResetEvent(false); LoadOperation<DataA> loadOperationGetDataA = null; loadOperationGetDataA = _context.Load(_context.GetDataAQuery(startDate), System.ServiceModel.DomainServices.Client.LoadBehavior.RefreshCurrent, false); loadOperationGetDataA.Completed += new EventHandler(loadOperationGetDataA_Completed); _loadOperationGetDataACompletion.WaitOne(); List<DataA> dataAs = new List<DataA>(); foreach (var dataA in loadOperationGetDataA.Entities) dataAs.Add(dataA); return dataAs.ToArray(); } private static AutoResetEvent _loadOperationGetDataACompletion; private static void loadOperationGetDataA_Completed(object sender, EventArgs e) { _loadOperationGetDataACompletion.Set(); } Seems kind of clunky trying to force it into being synchronous, but since this already is on a background thread, I think this is OK? So far, everything actually works, as much of a hack as it seems like it may be. It's important to note that if I try to run that code on the UI thread, it locks, because it waits on the WaitOne() forever, locking the thread, so it can't make the Load request to the server. So once the data is displayed, users can click on one as it goes by to fill a details pane with the full DataB data about that object. To do that, I have the the details pane user control subscribing to a selection event I have setup, which gets fired when the selection changes (on the UI thread). I use a similar technique there, to get the DataB object: void SelectionService_SelectedDataAChanged(object sender, EventArgs e) { DataA dataA = /*Get the selected DataA*/; MyDomainContext context = new MyDomainContext(); var loadOperationGetDataB = context.Load(context.GetDataBQuery(dataA.DataAID), System.ServiceModel.DomainServices.Client.LoadBehavior.RefreshCurrent, false); loadOperationGetDataB.Completed += new EventHandler(loadOperationGetDataB_Completed); } private void loadOperationGetDataB_Completed(object sender, EventArgs e) { this.DataContext = ((LoadOperation<DataB>)sender).Entities.SingleOrDefault(); } Again, it seems kinda hacky, but it works... except on the DataB that it loads, the DataCs list is empty. I've tried all kinds of things there, and I don't see what I'm doing wrong to allow the DataCs to come down with the DataB. I'm about ready to make a 3rd query for the DataCs, but that's screaming even more hackiness to me. It really feels like I'm fighting against the grain here, like I'm doing this in an entirely unintended way. If anyone could offer any assistance, and point out what I'm doing wrong here, I'd very much appreciate it! Thanks!

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• 3d Studio Max and 2+CPUs - Core limit ?

  - by FreekOne

  Hi guys, I am scouting for parts to put in a new machine, and in the process, while looking at different benchmarks I stumbled upon this benchmark and it got me a bit worried. Quote form it: Noticably absent from this review is an old-time favorite, 3ds Max. I did attempt to run our custom 3ds Max benchmark on both the 2009 and 2010 versions of the software, but the application would simply not load on the Westmere box with hyper-threading enabled. Evidently Autodesk didn't plan far enough ahead to write their software for more than 16 threads. Once there is an update that addresses this issue, I will happily add 3ds Max back into the benchmarking mix. Since I was looking at dual hexa-core Xeons (x5650), that would put my future machine at 24 logical cores which (duh) is well over 16 cores and since I'm mostly building this for 3DS Max work, you can see how this would seriously spoil my plans. I tried looking for additional information on this potential issue, but the above article seems to be the only one who mentions it. Could anyone who has access to a 16 core machine or an in-depth knowledge about 3DS Max please confirm this ? Any help would be much appreciated !

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• Redhat 5.5: Multi-thread process only uses 1 CPU of the available 8

  - by Tonny

  Weird situation: Redhat Enterprise 5.5 (stock install, no updates, x64) on a HP z800 workstation. (Dual Xeon 2,2 Ghz. 8 cores, 16 if you count Hyper-threading. RH sees 16 cores.) We have an application that can utilize 1, 2 or 4 threads for heavy calculations. Somehow all these threads run on the same core at 100% load (the other 15 cores are nearly idle) so there is absolutely no benefit from the extra threads. In fact there is a slight slowdown as the threads get in each others way on the single core. How do I get them to run on separate cores (if possible)? Application is 64 bit. Can't change anything about the software except changing the threads setting. Is there some obscure Linux setting I can try to change? (I'm a True64 and Aix guy. I use Linux, but have no in depth knowledge of the process scheduling on Linux.)

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• Oracle 10g for Windows does not start up on system boot

  - by Mike Dimmick

  We have an Oracle 10g Enterprise Edition installation (10.2.0.1.0) on a Windows Server 2003 virtual machine. It was initially created with Virtual Server 2005 R2 SP1 but has now been migrated to Windows Server 2008 Hyper-V. The services start on system boot, but the instance does not start up. This problem was actually occurring on Virtual Server after a migration from one server to another, but I managed to fix it then with: oradim -edit -sid ORCL -startmode auto However, this now has no effect. oradim.log (in %OracleHome%\database\oradim.log) says: Thu Jun 10 14:14:48 2010 C:\oracle\product\10.2.0\db_3\bin\oradim.exe -startup -sid orcl -usrpwd * -log oradim.log -nocheck 0 Thu Jun 10 14:14:48 2010 ORA-12560: TNS:protocol adapter error sqlnet.log in the same folder has: Fatal NI connect error 12560, connecting to: (DESCRIPTION=(ADDRESS=(PROTOCOL=BEQ)(PROGRAM=oracle)(ARGV0=oracleorcl)(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(CONNECT_DATA=(SID=orcl)(CID=(PROGRAM=C:\oracle\product\10.2.0\db_3\bin\oradim.exe)(HOST=ORACLE-VM)(USER=SYSTEM)))) VERSION INFORMATION: TNS for 32-bit Windows: Version 10.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for 32-bit Windows: Version 10.2.0.1.0 - Production Time: 10-JUN-2010 14:14:48 Tracing not turned on. Tns error struct: ns main err code: 12560 TNS-12560: TNS:protocol adapter error ns secondary err code: 0 nt main err code: 530 TNS-00530: Protocol adapter error nt secondary err code: 2 nt OS err code: 0 The ORA_ORCL_AUTOSTART registry value is set to TRUE, so it should be auto-starting - and you can see that it's trying to. The problem also occurs when stopping and restarting the OracleServiceORCL service. I've enabled SQL*Net tracing which shows: [10-JUN-2010 15:09:33.919] snlpcss: entry [10-JUN-2010 15:09:34.419] snlpcss: Unable to spawn Oracle oracle (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq))) orcl, error 2. [10-JUN-2010 15:09:34.419] snlpcall: exit On a hunch that error 2 is Windows error 2 (file not found) I tried restarting the service with Process Monitor watching oradim.exe, but this appears to delay things just enough that it always works. Right now I have a horrible hack where I've created a Scheduled Task to run oradim -startup -sid ORCL when the Administrator account logs on, and set the VM to auto-logon. I'd still like to work out why it's not working.

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• ESXi Server with 12 physical cores maxed out with only 8 cores assigned in virtual machines

  - by Sam

  I have an ESXi 5 server running on a 2-processor, 12-core system with hyperthreading enabled. So: 12 physical cores, 24 logical ones. On this server are 4 Windows 7 VMs, each configured for 2 processors, each running VMware Tools. Looking at my stats in vSphere, my "core utilization" is constantly maxed out. Yes, these machines are working hard, but only 8 cores have been allocated. How is this possible? Should I look into reducing the processor count per machine as in this post: VMware ESX server? I checked to ensure that hardware virtualization is enabled in the BIOS of the machine (a DELL R410). I've also started reading up on configuration, but being a newbie there's a lot of material to catch up on. It also seems I should only bother with advanced settings and pools if I'm really pushing the load, and I don't think that I should be pushing it with so few VMs. I suspect that I have some basic, incorrect configuration setting, but it's also possible that I have some giant misconceptions about virtualization. Any pointers? EDIT: Given the responses I've gotten so far, it seems that this is a measurement problem and not a configuration problem, making this less critical. Perhaps the real question is: How does the core utilization of the server reach a higher percentage than all individual cores' core utilization, and given that this possibility makes the metric useless for overall server load, what is the best global metric for measuring CPU load on hyper-threaded systems?

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• Moving data files failing

  - by Miles Hayler

  Trying to migrate data from C: to D: via the SBS console is failing. The wizard starts running but drops out in the first few seconds. I'll post the full logs, but the important lines appear to be as follows: An exception of type 'Type: System.IO.FileNotFoundException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' has occurred. Message: The system cannot find the file specified. (Exception from HRESULT: 0x80070002) Stack: at TaskScheduler.TaskSchedulerClass.GetFolder(String Path) at Microsoft.WindowsServerSolutions.Common.WindowsTaskScheduler..ctor(String taskPath, String taskName) BaseException: Microsoft.WindowsServerSolutions.Storage.Common.StorageException: GetServerBackupTaskStatus: fail to find the task --- ErrorCode:0 I've been googling for days with no luck. I have found that mscorlib is a component of .net, and I've discovered multiple instances of the file in %windir%, %windir%\winsxs, %windir%\Microsoft.net Anyone come across and fixed this one before? --------------------------------------------------------- [1516] 110315.190856.1105: Storage: Initializing...C:\Program Files\Windows Small Business Server\Bin\MoveData.exe [1516] 110315.190856.2875: Storage: Data Store to be moved: Exchange [1516] 110315.190856.5305: TaskScheduler: Exception System.IO.FileNotFoundException: [1516] 110315.190856.5605: Exception: --------------------------------------- An exception of type 'Type: System.IO.FileNotFoundException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' has occurred. Timestamp: 03/15/2011 19:08:56 Message: The system cannot find the file specified. (Exception from HRESULT: 0x80070002) Stack: at TaskScheduler.TaskSchedulerClass.GetFolder(String Path) at Microsoft.WindowsServerSolutions.Common.WindowsTaskScheduler..ctor(String taskPath, String taskName) [1516] 110315.190856.5625: Storage: Exception Microsoft.WindowsServerSolutions.Common.WindowsTaskSchedulerException: [1516] 110315.190856.5635: Exception: --------------------------------------- [b]An exception of type 'Type: Microsoft.WindowsServerSolutions.Common.WindowsTaskSchedulerException, Common, Version=6.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' has occurred.[/b] Timestamp: 03/15/2011 19:08:56 Message: Failed to find the task path Stack: at Microsoft.WindowsServerSolutions.Common.WindowsTaskScheduler..ctor(String taskPath, String taskName) at Microsoft.WindowsServerSolutions.Storage.Common.ServerBackupUtility.GetServerBackupTaskStatus() --------------------------------------- An exception of type 'Type: System.IO.FileNotFoundException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' has occurred. Timestamp: 03/15/2011 19:08:56 Message: The system cannot find the file specified. (Exception from HRESULT: 0x80070002) Stack: at TaskScheduler.TaskSchedulerClass.GetFolder(String Path) at Microsoft.WindowsServerSolutions.Common.WindowsTaskScheduler..ctor(String taskPath, String taskName) [1516] 110315.190856.5665: Storage: Error Retrieving Server Backup Task Status: ErrorCode:0 BaseException: Microsoft.WindowsServerSolutions.Storage.Common.StorageException: GetServerBackupTaskStatus: fail to find the task ---> ErrorCode:0 BaseException: Microsoft.WindowsServerSolutions.Common.WindowsTaskSchedulerException: Failed to find the task path ---> System.IO.FileNotFoundException: The system cannot find the file specified. (Exception from HRESULT: 0x80070002) at TaskScheduler.TaskSchedulerClass.GetFolder(String Path) at Microsoft.WindowsServerSolutions.Common.WindowsTaskScheduler..ctor(String taskPath, String taskName) --- End of inner exception stack trace --- at Microsoft.WindowsServerSolutions.Common.WindowsTaskScheduler..ctor(String taskPath, String taskName) at Microsoft.WindowsServerSolutions.Storage.Common.ServerBackupUtility.GetServerBackupTaskStatus() --- End of inner exception stack trace --- at Microsoft.WindowsServerSolutions.Storage.Common.ServerBackupUtility.GetServerBackupTaskStatus() at Microsoft.WindowsServerSolutions.Storage.MoveData.Helper.get_ServerBackupTaskState() [1516] 110315.190857.6216: Storage: Backup Task State: Unknown [1516] 110315.190857.9347: Storage: Launching the Move Data Wizard! [1516] 110315.190857.9397: Wizard: Admin:QueryNextPage(null) = Storage.MoveDataWizard.GettingStartedPage [1516] 110315.190857.9417: Wizard: TOC Storage.MoveDataWizard.GettingStartedPage is on ExpectedPath [1516] 110315.190857.9577: Wizard: Storage.MoveDataWizard.GettingStartedPage entered [1516] 110315.190857.9657: Wizard: Admin:QueryNextPage(Storage.MoveDataWizard.GettingStartedPage) = Storage.MoveDataWizard.DiagnoseDataStorePage [1516] 110315.190857.9657: Wizard: TOC Storage.MoveDataWizard.DiagnoseDataStorePage is on ExpectedPath [1516] 110315.190857.9657: Wizard: Admin:QueryNextPage(Storage.MoveDataWizard.DiagnoseDataStorePage) = Storage.MoveDataWizard.NewDataStoreLocationPage [1516] 110315.190857.9657: Wizard: TOC Storage.MoveDataWizard.NewDataStoreLocationPage is on ExpectedPath [1516] 110315.190857.9657: Wizard: Admin:QueryNextPage(Storage.MoveDataWizard.NewDataStoreLocationPage) = null [1516] 110315.190857.9697: Wizard: ---------------------------------- [1516] 110315.190857.9697: Wizard: The pages visted: [1516] 110315.190857.9697: Wizard: Current Page := [TOC Storage.MoveDataWizard.GettingStartedPage] [1516] 110315.190857.9697: Wizard: [TOC] : TOC Storage.MoveDataWizard.DiagnoseDataStorePage [1516] 110315.190857.9697: Wizard: [TOC] : TOC Storage.MoveDataWizard.NewDataStoreLocationPage [1516] 110315.190857.9697: Wizard: Step 1 of 3 [1516] 110315.190907.0406: Wizard: Admin:QueryNextPage(Storage.MoveDataWizard.GettingStartedPage) = Storage.MoveDataWizard.DiagnoseDataStorePage [1516] 110315.190907.0416: Wizard: Storage.MoveDataWizard.GettingStartedPage exited with the button: Next [1516] 110315.190907.0416: WizardChainEngine Next Clicked: Going to page {0}.: Storage.MoveDataWizard.DiagnoseDataStorePage [1516] 110315.190907.0496: Wizard: Storage.MoveDataWizard.DiagnoseDataStorePage entered [1516] 110315.190907.0606: Wizard: Admin:QueryNextPage(Storage.MoveDataWizard.DiagnoseDataStorePage) = Storage.MoveDataWizard.NewDataStoreLocationPage [1516] 110315.190907.0606: Wizard: Admin:QueryNextPage(Storage.MoveDataWizard.NewDataStoreLocationPage) = null [1516] 110315.190907.0606: Wizard: ---------------------------------- [1516] 110315.190907.0606: Wizard: The pages visted: [1516] 110315.190907.0606: Wizard: [TOC] visited: TOC Storage.MoveDataWizard.GettingStartedPage [1516] 110315.190907.0606: Wizard: Current Page := [TOC Storage.MoveDataWizard.DiagnoseDataStorePage] [1516] 110315.190907.0616: Wizard: [TOC] : TOC Storage.MoveDataWizard.NewDataStoreLocationPage [1516] 110315.190907.0616: Wizard: Step 2 of 3 [19772] 110315.190907.0656: Storage: Starting System Diagnosis [19772] 110315.190907.0656: Storage: Getting Data Store Information [19772] 110315.190907.1086: Storage: Create the list of storage and DB directory path [19772] 110315.190907.1246: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingTasks..ctor [19772] 110315.190907.1546: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingTasks.Initialize [19772] 110315.190907.1596: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.Initialize [19772] 110315.190907.1606: Messaging: Exchange install path: C:\Program Files\Microsoft\Exchange Server\bin [19772] 110315.190908.4157: Messaging: E12 Monad runspace created ID: Microsoft.PowerShell [19772] 110315.190908.4237: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190908.4287: Messaging: Executed management shell command: get-exchangeserver [19772] 110315.190910.2369: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190910.2369: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.Initialize [19772] 110315.190910.5699: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingTasks.GatherAdminInfo [19772] 110315.190910.5699: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190910.5719: Messaging: Executed management shell command: get-user -Identity "dmagroup.local\Administrator" [19772] 110315.190911.0870: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.0880: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.0880: Messaging: Executed management shell command: get-mailbox -Identity "d2ae2bf0-48a7-4ce9-9e72-bb3c765454ac" [19772] 110315.190911.1300: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.1310: Messaging: User Administrator is mail enabled and can use MessagingManagement to send mail. [19772] 110315.190911.1310: Messaging: Email address used for user: [email protected] [19772] 110315.190911.1440: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.1440: Messaging: Executed management shell command: get-group -Identity "Domain Admins" [19772] 110315.190911.1630: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.1640: Messaging: User Administrator is a member of Domain Admins and can use MessagingManagement to manage Exchange. [19772] 110315.190911.1640: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingTasks.GatherAdminInfo [19772] 110315.190911.1640: Messaging: MessagingManagement enabled for Exchange management: True [19772] 110315.190911.1640: Messaging: MessagingManagement enabled for mail submission: True [19772] 110315.190911.1640: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingTasks.Initialize [19772] 110315.190911.1640: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Tasks.TaskMoveExchangeData.CreateDataStoreDriveList [19772] 110315.190911.1670: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.Initialize [19772] 110315.190911.1670: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.1670: Messaging: Executed management shell command: get-storagegroup -Server "SERVER01" [19772] 110315.190911.2990: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.3070: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.Initialize [19772] 110315.190911.3070: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.3070: Messaging: Executed management shell command: get-mailboxdatabase -Server "SERVER01" [19772] 110315.190911.4440: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.4520: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.Initialize [19772] 110315.190911.4520: Messaging: Begin Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.4520: Messaging: Executed management shell command: get-publicfolderdatabase -Server "SERVER01" [19772] 110315.190911.5240: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute [19772] 110315.190911.5510: Storage: Data Store Drive/s Details:Name=C:\,Size=12675712420 [19772] 110315.190911.5510: Storage: Data Store Size Details: Current Total Size=12675712420 Required Size=12675712420 [19772] 110315.190911.5510: Storage: MoveData Task can move the Data Store=True [19772] 110315.190911.8401: Storage: An error was encountered when performing system diagnosis : ErrorCode:0 BaseException: Microsoft.WindowsServerSolutions.Storage.Common.StorageException: WMI error occurred while accessing drive ---> System.Management.ManagementException: Not found at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode) at System.Management.ManagementObjectCollection.ManagementObjectEnumerator.MoveNext() at Microsoft.WindowsServerSolutions.Storage.Common.DriveUtil.IsDriveRemovable(String drive) --- End of inner exception stack trace --- at Microsoft.WindowsServerSolutions.Storage.Common.DriveUtil.IsDriveRemovable(String drive) at Microsoft.WindowsServerSolutions.Storage.Common.DataStoreInfo.LoadAvailableDrives() at Microsoft.WindowsServerSolutions.Storage.Common.MoveDataUtil.CanMoveData(DataStoreInfo storeInfo, MoveDataError& error) at Microsoft.WindowsServerSolutions.Storage.MoveData.DiagnoseDataStorePagePresenter.DiagnoseDataStore(Object sender, DoWorkEventArgs args) [1516] 110315.190912.0331: Storage: An error occured during the execution: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> ErrorCode:0 BaseException: Microsoft.WindowsServerSolutions.Storage.Common.StorageException: Diagnosing the Data Store failed (see the inner exception) ---> ErrorCode:0 BaseException: Microsoft.WindowsServerSolutions.Storage.Common.StorageException: WMI error occurred while accessing drive ---> System.Management.ManagementException: Not found at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode) at System.Management.ManagementObjectCollection.ManagementObjectEnumerator.MoveNext() at Microsoft.WindowsServerSolutions.Storage.Common.DriveUtil.IsDriveRemovable(String drive) --- End of inner exception stack trace --- at Microsoft.WindowsServerSolutions.Storage.Common.DriveUtil.IsDriveRemovable(String drive) at Microsoft.WindowsServerSolutions.Storage.Common.DataStoreInfo.LoadAvailableDrives() at Microsoft.WindowsServerSolutions.Storage.Common.MoveDataUtil.CanMoveData(DataStoreInfo storeInfo, MoveDataError& error) at Microsoft.WindowsServerSolutions.Storage.MoveData.DiagnoseDataStorePagePresenter.DiagnoseDataStore(Object sender, DoWorkEventArgs args) at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument) --- End of inner exception stack trace --- at Microsoft.WindowsServerSolutions.Storage.MoveData.DiagnoseDataStorePagePresenter.backgroundWorker_RunWorkerCompleted(Object sender, RunWorkerCompletedEventArgs e) --- End of inner exception stack trace --- at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) at System.Delegate.DynamicInvokeImpl(Object[] args) at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme) at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme) at System.Windows.Forms.Control.InvokeMarshaledCallbacks() at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at Microsoft.WindowsServerSolutions.Common.Wizards.Framework.WizardFrameView.Create() at Microsoft.WindowsServerSolutions.Common.Wizards.Framework.WizardChainEngine.Launch() at Microsoft.WindowsServerSolutions.Storage.MoveData.MainClass.LaunchMoveDataWizard() at Microsoft.WindowsServerSolutions.Storage.MoveData.MainClass.Main(String[] args)

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