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  • Remove Kernel Lock from Unmounted Mass Storage USB Device from the Command Line in Linux

    - by Casey
    I've searched high and low, and can't figure this one out. I have a older Olympus Camera (2001 or so). When I plug in the USB connection, I get the following log output: $ dmesg | grep sd [20047.625076] sd 21:0:0:0: Attached scsi generic sg7 type 0 [20047.627922] sd 21:0:0:0: [sdg] Attached SCSI removable disk Secondly, the drive is not mounted in the FS, but when I run gphoto2 I get the following error: $ gphoto2 --list-config *** Error *** An error occurred in the io-library ('Could not lock the device'): Camera is already in use. *** Error (-60: 'Could not lock the device') *** What command will unmount the drive. For example in Nautilus, I can right click and select "Safely Remove Device". After doing that, the /dev/sg7 and /dev/sdg devices are removed. The output of gphoto2 is then: # gphoto2 --list-config /Camera Configuration/Picture Settings/resolution /Camera Configuration/Picture Settings/shutter /Camera Configuration/Picture Settings/aperture /Camera Configuration/Picture Settings/color /Camera Configuration/Picture Settings/flash /Camera Configuration/Picture Settings/whitebalance /Camera Configuration/Picture Settings/focus-mode /Camera Configuration/Picture Settings/focus-pos /Camera Configuration/Picture Settings/exp /Camera Configuration/Picture Settings/exp-meter /Camera Configuration/Picture Settings/zoom /Camera Configuration/Picture Settings/dzoom /Camera Configuration/Picture Settings/iso /Camera Configuration/Camera Settings/date-time /Camera Configuration/Camera Settings/lcd-mode /Camera Configuration/Camera Settings/lcd-brightness /Camera Configuration/Camera Settings/lcd-auto-shutoff /Camera Configuration/Camera Settings/camera-power-save /Camera Configuration/Camera Settings/host-power-save /Camera Configuration/Camera Settings/timefmt Some things I've tried already are sdparm and sg3_utils, however I am unfamiliar with them, so it's possible I just didn't find the right command. Update 1: # mount | grep sdg # mount | grep sg7 # umount /dev/sg7 umount: /dev/sg7: not mounted # umount /dev/sdg umount: /dev/sdg: not mounted # gphoto2 --list-config *** Error *** An error occurred in the io-library ('Could not lock the device'): Camera is already in use. *** Error (-60: 'Could not lock the device') ***

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  • PostgreSQL update problems with uuid

    - by kdl
    Hi, I am trying to run yum update on my CentOS 5.2 box and keep getting this message: Missing Dependency: libossp-uuid.so.15 is needed by package postgresql-contrib I ran yum update postgresql separately and now it's 8.3.8. I also downloaded uuid-1.6.2 and built it from source, but I still get the same result. yum update -d6 uuid gives me this at the end: --> Running transaction check ---> Package uuid.i386 0:1.6.1-3.el5.kb set to be updated Checking deps for uuid.i386 0-1.6.1-3.el5.kb - u Checking deps for uuid.i386 0-1.5.1-4.rhel5 - None postgresql-contrib requires: libossp-uuid.so.15 --> Processing Dependency: libossp-uuid.so.15 for package: postgresql-contrib Needed Require is not a package name. Looking up: libossp-uuid.so.15 Potential Provider: uuid.i386 0:1.5.1-4.rhel5 Mode is u for provider of libossp-uuid.so.15: uuid.i386 0:1.5.1-4.rhel5 Mode for pkg providing libossp-uuid.so.15: u Cannot find an update path for dep for: libossp-uuid.so.15 Searching pkgSack for dep: libossp-uuid.so.15 Potential match for libossp-uuid.so.15 from uuid - 1.5.1-4.rhel5.i386 Matched uuid - 1.5.1-4.rhel5.i386 to require for libossp-uuid.so.15 uuid - 1.5.1-4.rhel5.i386 is in providing packages but it is already installed, removing. --> Finished Dependency Resolution Dependency Process ending Error: Missing Dependency: libossp-uuid.so.15 is needed by package postgresql-contrib How can I resolve this situation? Thanks

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  • qemu-img: Could not open $FILE

    - by HTTP500
    I received a single-file VMDK from a vendor that has a virtual appliance for a particular product I'm interested in evaluating. We run a KVM solution (Proxmox) so I tried converting the file but on that system qemu-img blows up. (I was able to convert (multipart) VMDK files from bitnami without error.) So I figured I'll just yum install qemu-img on a RHEL 6.3 VM and do it there. But despite the fact that I can file the file just fine when I run qemu-img on it I get this error that it can't open the file: [root@host dir]# file 1.vmdk 1.vmdk: VMware4 disk image [root@host dir]# qemu-img info 1.vmdk qemu-img: Could not open 'vmdk' I've seen some other people post on the interwebs that they've had this problem but none of them seem to have a resolution. Does anyone have any ideas? I have checked the MD5SUM already. EDIT1: [root@host dir]# qemu-img info -f vmdk 1.vmdk qemu-img: Could not open '1.vmdk' EDIT2: Ran strace per suggestion. Not sure what to look for... Here is a possible: ioctl(3, CDROM_DRIVE_STATUS, 0x7fffffff) = -1 ENOTTY (Inappropriate ioctl for device)

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  • Migrating a virtual domain controller for DR exercise

    - by Dips
    Hello gurus, I have a question. I have a requirement where I have a virtual domain controller and I have to migrate it to another virtual server in a different location. It is for test purposes to test out a DR scenario and the test will be deemed successful if the users that authenticate using the production DC can do so in the backup DC. I don't know much about this and thus don't know why it was assigned to me. So any assistance will be greatly appreciated. What I had in mind was: 1) Taking a snapshot of the production server and then restoring it in the other server. But I was told that this is not the suggested way of doing it. I was not told why. Is that right?If a snapshot is to be taken then what is the best way to do it. Any ideas on where I can get the documentation for this? 2) Another way would be to build the test DC from ground up, match it to the specs of production DC and then perform the DR test. Is this a better option? What will be needed to perform such an activity? Where can I find documentation on that? I apologise for the length of this query. As I said I am quite a novice and hope to get a better resolution. Any assistance will be greatly appreciated. Regards,

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  • ASP.NET MVC 3 Hosting :: ASP.NET MVC 3 First Look

    - by mbridge
    MVC 3 View Enhancements MVC 3 introduces two improvements to the MVC view engine: - Ability to select the view engine to use. MVC 3 allows you to select from any of your  installed view engines from Visual Studio by selecting Add > View (including the newly introduced ASP.NET “Razor” engine”): - Support for the next ASP.NET “Razor” syntax. The newly previewed Razor syntax is a concise lightweight syntax. MVC 3 Control Enhancements - Global Filters: ASP.NET MVC 3  allows you to specify that a filter which applies globally to all Controllers within an app by adding it to the GlobalFilters collection.  The RegisterGlobalFilters() method is now included in the default Global.asax class template and so provides a convenient place to do this since is will then be called by the Application_Start() method: void RegisterGlobalFilters(GlobalFilterCollection filters) { filters.Add(new HandleLoggingAttribute()); filters.Add(new HandleErrorAttribute()); } void Application_Start() { RegisterGlobalFilters (GlobalFilters.Filters); } - Dynamic ViewModel Property : MVC 3 augments the ViewData API with a new “ViewModel” property on Controller which is of type “dynamic” – and therefore enables you to use the new dynamic language support in C# and VB pass ViewData items using a cleaner syntax than the current dictionary API. Public ActionResult Index() { ViewModel.Message = "Hello World"; return View(); } - New ActionResult Types : MVC 3 includes three new ActionResult types and helper methods: 1. HttpNotFoundResult – indicates that a resource which was requested by the current URL was not found. HttpNotFoundResult will return a 404 HTTP status code to the calling client. 2. PermanentRedirects – The HttpRedirectResult class contains a new Boolean “Permanent” property which is used to indicate that a permanent redirect should be done. Permanent redirects use a HTTP 301 status code.  The Controller class  includes three new methods for performing these permanent redirects: RedirectPermanent(), RedirectToRoutePermanent(), andRedirectToActionPermanent(). All  of these methods will return an instance of the HttpRedirectResult object with the Permanent property set to true. 3. HttpStatusCodeResult – used for setting an explicit response status code and its associated description. MVC 3 AJAX and JavaScript Enhancements MVC 3 ships with built-in JSON binding support which enables action methods to receive JSON-encoded data and then model-bind it to action method parameters. For example a jQuery client-side JavaScript could define a “save” event handler which will be invoked when the save button is clicked on the client. The code in the event handler then constructs a client-side JavaScript “product” object with 3 fields with their values retrieved from HTML input elements. Finally, it uses jQuery’s .ajax() method to POST a JSON based request which contains the product to a /theStore/UpdateProduct URL on the server: $('#save').click(function () { var product = { ProdName: $('#Name').val() Price: $('#Price').val(), } $.ajax({ url: '/theStore/UpdateProduct', type: "POST"; data: JSON.stringify(widget), datatype: "json", contentType: "application/json; charset=utf-8", success: function () { $('#message').html('Saved').fadeIn(), }, error: function () { $('#message').html('Error').fadeIn(), } }); return false; }); MVC will allow you to implement the /theStore/UpdateProduct URL on the server by using an action method as below. The UpdateProduct() action method will accept a strongly-typed Product object for a parameter. MVC 3 can now automatically bind an incoming JSON post value to the .NET Product type on the server without having to write any custom binding. [HttpPost] public ActionResult UpdateProduct(Product product) { // save logic here return null } MVC 3 Model Validation Enhancements MVC 3 builds on the MVC 2 model validation improvements by adding   support for several of the new validation features within the System.ComponentModel.DataAnnotations namespace in .NET 4.0: - Support for the new DataAnnotations metadata attributes like DisplayAttribute. - Support for the improvements made to the ValidationAttribute class which now supports a new IsValid overload that provides more info on  the current validation context, like what object is being validated. - Support for the new IValidatableObject interface which enables you to perform model-level validation and also provide validation error messages which are specific to the state of the overall model. MVC 3 Dependency Injection Enhancements MVC 3 includes better support for applying Dependency Injection (DI) and also integrating with Dependency Injection/IOC containers. Currently MVC 3 Preview 1 has support for DI in the below places: - Controllers (registering & injecting controller factories and injecting controllers) - Views (registering & injecting view engines, also for injecting dependencies into view pages) - Action Filters (locating and  injecting filters) And this is another important blog about Microsoft .NET and technology: - Windows 2008 Blog - SharePoint 2010 Blog - .NET 4 Blog And you can visit here if you're looking for ASP.NET MVC 3 hosting

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  • apache vhost not working consistently

    - by petrus
    I have a vhost on my webserver whose sole and unique goal is to return the client IP adress: petrus@bzn:~$ cat /home/vhosts/domain.org/index.php <?php echo $_SERVER['REMOTE_ADDR']; echo "\n" ?> This helps me troubleshoot networking issues, especially when NAT is involved. As such, I don't always have domain name resolution and this service needs to work even if queried by its IP address. I'm using it this way: petrus@hive:~$ echo "GET /" | nc 88.191.124.41 80 191.51.4.55 petrus@hive:~$ echo "GET /" | nc domain.org 80 191.51.4.55 router#more http://88.191.124.41/index.php 88.191.124.254 However I found that it wasn't working from at least a computer: petrus@seth:~$ echo "GET /" | nc domain.org 80 petrus@seth:~$ petrus@seth:~$ echo "GET /" | nc 88.191.124.41 80 petrus@seth:~$ What I checked: This is not related to ipv6: petrus@seth:~$ echo "GET /" | nc -4 ydct.org 80 petrus@seth:~$ petrus@hive:~$ echo "GET /" | nc ydct.org 80 2a01:e35:ee8c:180:21c:77ff:fe30:9e36 netcat version is the same (except platform, i386 vs x64): petrus@seth:~$ type nc nc est haché (/bin/nc) petrus@seth:~$ file /bin/nc /bin/nc: symbolic link to `/etc/alternatives/nc' petrus@seth:~$ ls -l /etc/alternatives/nc lrwxrwxrwx 1 root root 15 2010-06-26 14:01 /etc/alternatives/nc -> /bin/nc.openbsd petrus@hive:~$ type nc nc est haché (/bin/nc) petrus@hive:~$ file /bin/nc /bin/nc: symbolic link to `/etc/alternatives/nc' petrus@hive:~$ ls -l /etc/alternatives/nc lrwxrwxrwx 1 root root 15 2011-05-26 01:23 /etc/alternatives/nc -> /bin/nc.openbsd It works when used without the pipe: petrus@seth:~$ nc domain.org 80 GET / 2a01:e35:ee8c:180:221:85ff:fe96:e485 And the piping works at least with a test service (netcat listening on 1234/tcp and output to stdout) petrus@bzn:~$ nc -l -p 1234 GET / petrus@bzn:~$ petrus@seth:~$ echo "GET /" | nc domain.org 1234 petrus@seth:~$ I don't know if this issue is more related to netcat or Apache, but I'd appreciate any pointers to troubleshoot this issue ! The IP addresses have been modified but kept consistent for easy reading. bzn is the server, hive is a working client and seth is the client on which I have the issue.

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  • run script as another user from a root script with no tty stdin

    - by viktor tron
    Using CentOs, I want to run a script as user 'training' as a system service. I use daemontools to monitor the process, which needs a launcher script that is run as root and has no tty standard in. Below I give my four different attempts which all fail. : #!/bin/bash exec >> /var/log/training_service.log 2>&1 setuidgid training training_command This last line is not good enough since for training_command, we need environment for trqaining user to be set. : su - training -c 'training_command' This looks like it (http://serverfault.com/questions/44400/run-a-shell-script-as-a-different-user) but gives 'standard in must be tty' as su making sure tty is present to potentially accept password. I know I could make this disappear by modifying /etc/sudoers (a la http://superuser.com/questions/119376/bash-su-script-giving-an-error-standard-in-must-be-a-tty) but i am reluctant and unsure of consequences. : runuser - training -c 'training_command' This one gives runuser: cannot set groups: Connection refused. I found no sense or resolution to this error. : ssh -p100 training@localhost 'source $HOME/.bashrc; training_command' This one is more of a joke to show desparation. Even this one fails with Host key verification failed. (the host key IS in known_hosts, etc). Note: all of 2,3,4 work as they should if I run the wrapper script from a root shell. problems only occur if the system service monitor (daemontools) launches it (no tty terminal I guess). I am stuck. Is this something so hard to achieve? I appreciate all insight and guidance to best practice. (this has also been posted on superuser: http://superuser.com/questions/434235/script-calling-script-as-other-user)

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  • RIDC Accelerator for Portal

    - by Stefan Krantz
    What is RIDC?Remote IntraDoc Client is a Java enabled API that leverages simple transportation protocols like Socket, HTTP and JAX/WS to execute content service operations in WebCenter Content Server. Each operation by design in the Content Server will execute stateless and return a complete result of the request. Each request object simply specifies the in a Map format (key and value pairs) what service to call and what parameters settings to apply. The result responded with will be built on the same Map format (key and value pairs). The possibilities with RIDC is endless since you can consume any available service (even custom made ones), RIDC can be executed from any Java SE application that has any WebCenter Content Services needs. WebCenter Portal and the example Accelerator RIDC adapter frameworkWebCenter Portal currently integrates and leverages WebCenter Content Services to enable available use cases in the portal today, like Content Presenter and Doc Lib. However the current use cases only covers few of the scenarios that the Content Server has to offer, in addition to the existing use cases it is not rare that the customer requirements requires additional steps and functionality that is provided by WebCenter Content but not part of the use cases from the WebCenter Portal.The good news to this is RIDC, the second good news is that WebCenter Portal already leverages the RIDC and has a connection management framework in place. The million dollar question here is how can I leverage this infrastructure for my custom use cases. Oracle A-Team has during its interactions produced a accelerator adapter framework that will reuse and leverage the existing connections provisioned in the webcenter portal application (works for WebCenter Spaces as well), as well as a very comprehensive design patter to minimize the work involved when exposing functionality. Let me introduce the RIDCCommon framework for accelerating WebCenter Content consumption from WebCenter Portal including Spaces. How do I get started?Through a few easy steps you will be on your way, Extract the zip file RIDCCommon.zip to the WebCenter Portal Application file structure (PortalApp) Open you Portal Application in JDeveloper (PS4/PS5) select to open the project in your application - this will add the project as a member of the application Update the Portal project dependencies to include the new RIDCCommon project Make sure that you WebCenter Content Server connection is marked as primary (a checkbox at the top of the connection properties form) You should by this stage have a similar structure in your JDeveloper Application Project Portal Project PortalWebAssets Project RIDCCommon Since the API is coming with some example operations that has already been exposed as DataControl actions, if you open Data Controls accordion you should see following: How do I implement my own operation? Create a new Java Class in for example com.oracle.ateam.portal.ridc.operation call it (GetDocInfoOperation) Extend the abstract class com.oracle.ateam.portal.ridc.operation.RIDCAbstractOperation and implement the interface com.oracle.ateam.portal.ridc.operation.IRIDCOperation The only method you actually are required to implement is execute(RIDCManager, IdcClient, IdcContext) The best practice to set object references for the operation is through the Constructor, example below public GetDocInfoOperation(String dDocName)By leveraging the constructor you can easily force the implementing class to pass right information, you can also overload the Constructor with more or less parameters as required Implement the execute method, the work you supposed to execute here is creating a new request binder and retrieve a response binder with the information in the request binder.In this case the dDocName for which we want the DocInfo Secondly you have to process the response binder by extracting the information you need from the request and restore this information in a simple POJO Java BeanIn the example below we do this in private void processResult(DataBinder responseData) - the new SearchDataObject is a Member of the GetDocInfoOperation so we can return this from a access method. Since the RIDCCommon API leverage template pattern for the operations you are now required to add a method that will enable access to the result after the execution of the operationIn the example below we added the method public SearchDataObject getDataObject() - this method returns the pre processed SearchDataObject from the execute method  This is it, as you can see on the code below you do not need more than 32 lines of very simple code 1: public class GetDocInfoOperation extends RIDCAbstractOperation implements IRIDCOperation { 2: private static final String DOC_INFO_BY_NAME = "DOC_INFO_BY_NAME"; 3: private String dDocName = null; 4: private SearchDataObject sdo = null; 5: 6: public GetDocInfoOperation(String dDocName) { 7: super(); 8: this.dDocName = dDocName; 9: } 10:   11: public boolean execute(RIDCManager manager, IdcClient client, 12: IdcContext userContext) throws Exception { 13: DataBinder dataBinder = createNewRequestBinder(DOC_INFO_BY_NAME); 14: dataBinder.putLocal(DocumentAttributeDef.NAME.getName(), dDocName); 15: 16: DataBinder responseData = getResponseBinder(dataBinder); 17: processResult(responseData); 18: return true; 19: } 20: 21: private void processResult(DataBinder responseData) { 22: DataResultSet rs = responseData.getResultSet("DOC_INFO"); 23: for(DataObject dobj : rs.getRows()) { 24: this.sdo = new SearchDataObject(dobj); 25: } 26: super.setMessage(responseData.getLocal(ATTR_MESSAGE)); 27: } 28: 29: public SearchDataObject getDataObject() { 30: return this.sdo; 31: } 32: } How do I execute my operation? In the previous section we described how to create a operation, so by now you should be ready to execute the operation Step one either add a method to the class  com.oracle.ateam.portal.datacontrol.ContentServicesDC or a class of your own choiceRemember the RIDCManager is a very light object and can be created where needed Create a method signature look like this public SearchDataObject getDocInfo(String dDocName) throws Exception In the method body - create a new instance of GetDocInfoOperation and meet the constructor requirements by passing the dDocNameGetDocInfoOperation docInfo = new GetDocInfoOperation(dDocName) Execute the operation via the RIDCManager instance rMgr.executeOperation(docInfo) Return the result by accessing it from the executed operationreturn docInfo.getDataObject() 1: private RIDCManager rMgr = null; 2: private String lastOperationMessage = null; 3:   4: public ContentServicesDC() { 5: super(); 6: this.rMgr = new RIDCManager(); 7: } 8: .... 9: public SearchDataObject getDocInfo(String dDocName) throws Exception { 10: GetDocInfoOperation docInfo = new GetDocInfoOperation(dDocName); 11: boolean boolVal = rMgr.executeOperation(docInfo); 12: lastOperationMessage = docInfo.getMessage(); 13: return docInfo.getDataObject(); 14: }   Get the binaries! The enclosed code in a example that can be used as a reference on how to consume and leverage similar use cases, user has to guarantee appropriate quality and support.  Download link: https://blogs.oracle.com/ATEAM_WEBCENTER/resource/stefan.krantz/RIDCCommon.zip RIDC API Referencehttp://docs.oracle.com/cd/E23943_01/apirefs.1111/e17274/toc.htm

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  • Remove Kernel Lock from Unmounted Mass Storage USB Device from the Command Line in Linux

    - by Casey
    I've searched high and low, and can't figure this one out. I have a older Olympus Camera (2001 or so). When I plug in the USB connection, I get the following log output: $ dmesg | grep sd [20047.625076] sd 21:0:0:0: Attached scsi generic sg7 type 0 [20047.627922] sd 21:0:0:0: [sdg] Attached SCSI removable disk Secondly, the drive is not mounted in the FS, but when I run gphoto2 I get the following error: $ gphoto2 --list-config *** Error *** An error occurred in the io-library ('Could not lock the device'): Camera is already in use. *** Error (-60: 'Could not lock the device') *** What command will unmount the drive. For example in Nautilus, I can right click and select "Safely Remove Device". After doing that, the /dev/sg7 and /dev/sdg devices are removed. The output of gphoto2 is then: # gphoto2 --list-config /Camera Configuration/Picture Settings/resolution /Camera Configuration/Picture Settings/shutter /Camera Configuration/Picture Settings/aperture /Camera Configuration/Picture Settings/color /Camera Configuration/Picture Settings/flash /Camera Configuration/Picture Settings/whitebalance /Camera Configuration/Picture Settings/focus-mode /Camera Configuration/Picture Settings/focus-pos /Camera Configuration/Picture Settings/exp /Camera Configuration/Picture Settings/exp-meter /Camera Configuration/Picture Settings/zoom /Camera Configuration/Picture Settings/dzoom /Camera Configuration/Picture Settings/iso /Camera Configuration/Camera Settings/date-time /Camera Configuration/Camera Settings/lcd-mode /Camera Configuration/Camera Settings/lcd-brightness /Camera Configuration/Camera Settings/lcd-auto-shutoff /Camera Configuration/Camera Settings/camera-power-save /Camera Configuration/Camera Settings/host-power-save /Camera Configuration/Camera Settings/timefmt Some things I've tried already are sdparm and sg3_utils, however I am unfamiliar with them, so it's possible I just didn't find the right command. Update 1: # mount | grep sdg # mount | grep sg7 # umount /dev/sg7 umount: /dev/sg7: not mounted # umount /dev/sdg umount: /dev/sdg: not mounted # gphoto2 --list-config *** Error *** An error occurred in the io-library ('Could not lock the device'): Camera is already in use. *** Error (-60: 'Could not lock the device') ***

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  • ASP.NET MVC: Converting business objects to select list items

    - by DigiMortal
    Some of our business classes are used to fill dropdown boxes or select lists. And often you have some base class for all your business classes. In this posting I will show you how to use base business class to write extension method that converts collection of business objects to ASP.NET MVC select list items without writing a lot of code. BusinessBase, BaseEntity and other base classes I prefer to have some base class for all my business classes so I can easily use them regardless of their type in contexts I need. NB! Some guys say that it is good idea to have base class for all your business classes and they also suggest you to have mappings done same way in database. Other guys say that it is good to have base class but you don’t have to have one master table in database that contains identities of all your business objects. It is up to you how and what you prefer to do but whatever you do – think and analyze first, please. :) To keep things maximally simple I will use very primitive base class in this example. This class has only Id property and that’s it. public class BaseEntity {     public virtual long Id { get; set; } } Now we have Id in base class and we have one more question to solve – how to better visualize our business objects? To users ID is not enough, they want something more informative. We can define some abstract property that all classes must implement. But there is also another option we can use – overriding ToString() method in our business classes. public class Product : BaseEntity {     public virtual string SKU { get; set; }     public virtual string Name { get; set; }       public override string ToString()     {         if (string.IsNullOrEmpty(Name))             return base.ToString();           return Name;     } } Although you can add more functionality and properties to your base class we are at point where we have what we needed: identity and human readable presentation of business objects. Writing list items converter Now we can write method that creates list items for us. public static class BaseEntityExtensions {            public static IEnumerable<SelectListItem> ToSelectListItems<T>         (this IList<T> baseEntities) where T : BaseEntity     {         return ToSelectListItems((IEnumerator<BaseEntity>)                    baseEntities.GetEnumerator());     }       public static IEnumerable<SelectListItem> ToSelectListItems         (this IEnumerator<BaseEntity> baseEntities)     {         var items = new HashSet<SelectListItem>();           while (baseEntities.MoveNext())         {             var item = new SelectListItem();             var entity = baseEntities.Current;               item.Value = entity.Id.ToString();             item.Text = entity.ToString();               items.Add(item);         }           return items;     } } You can see here to overloads of same method. One works with List<T> and the other with IEnumerator<BaseEntity>. Although mostly my repositories return IList<T> when querying data there are always situations where I can use more abstract types and interfaces. Using extension methods in code In your code you can use ToSelectListItems() extension methods like shown on following code fragment. ... var model = new MyFormModel(); model.Statuses = _myRepository.ListStatuses().ToSelectListItems(); ... You can call this method on all your business classes that extend your base entity. Wanna have some fun with this code? Write overload for extension method that accepts selected item ID.

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  • What is the most efficient way to convert to binary and back in C#?

    - by Saad Imran.
    I'm trying to write a general purpose socket server for a game I'm working on. I know I could very well use already built servers like SmartFox and Photon, but I wan't to go through the pain of creating one myself for learning purposes. I've come up with a BSON inspired protocol to convert the the basic data types, their arrays, and a special GSObject to binary and arrange them in a way so that it can be put back together into object form on the client end. At the core, the conversion methods utilize the .Net BitConverter class to convert the basic data types to binary. Anyways, the problem is performance, if I loop 50,000 times and convert my GSObject to binary each time it takes about 5500ms (the resulting byte[] is just 192 bytes per conversion). I think think this would be way too slow for an MMO that sends 5-10 position updates per second with a 1000 concurrent users. Yes, I know it's unlikely that a game will have a 1000 users on at the same time, but like I said earlier this is supposed to be a learning process for me, I want to go out of my way and build something that scales well and can handle at least a few thousand users. So yea, if anyone's aware of other conversion techniques or sees where I'm loosing performance I would appreciate the help. GSBitConverter.cs This is the main conversion class, it adds extension methods to main datatypes to convert to the binary format. It uses the BitConverter class to convert the base types. I've shown only the code to convert integer and integer arrays, but the rest of the method are pretty much replicas of those two, they just overload the type. public static class GSBitConverter { public static byte[] ToGSBinary(this short value) { return BitConverter.GetBytes(value); } public static byte[] ToGSBinary(this IEnumerable<short> value) { List<byte> bytes = new List<byte>(); short length = (short)value.Count(); bytes.AddRange(length.ToGSBinary()); for (int i = 0; i < length; i++) bytes.AddRange(value.ElementAt(i).ToGSBinary()); return bytes.ToArray(); } public static byte[] ToGSBinary(this bool value); public static byte[] ToGSBinary(this IEnumerable<bool> value); public static byte[] ToGSBinary(this IEnumerable<byte> value); public static byte[] ToGSBinary(this int value); public static byte[] ToGSBinary(this IEnumerable<int> value); public static byte[] ToGSBinary(this long value); public static byte[] ToGSBinary(this IEnumerable<long> value); public static byte[] ToGSBinary(this float value); public static byte[] ToGSBinary(this IEnumerable<float> value); public static byte[] ToGSBinary(this double value); public static byte[] ToGSBinary(this IEnumerable<double> value); public static byte[] ToGSBinary(this string value); public static byte[] ToGSBinary(this IEnumerable<string> value); public static string GetHexDump(this IEnumerable<byte> value); } Program.cs Here's the the object that I'm converting to binary in a loop. class Program { static void Main(string[] args) { GSObject obj = new GSObject(); obj.AttachShort("smallInt", 15); obj.AttachInt("medInt", 120700); obj.AttachLong("bigInt", 10900800700); obj.AttachDouble("doubleVal", Math.PI); obj.AttachStringArray("muppetNames", new string[] { "Kermit", "Fozzy", "Piggy", "Animal", "Gonzo" }); GSObject apple = new GSObject(); apple.AttachString("name", "Apple"); apple.AttachString("color", "red"); apple.AttachBool("inStock", true); apple.AttachFloat("price", (float)1.5); GSObject lemon = new GSObject(); apple.AttachString("name", "Lemon"); apple.AttachString("color", "yellow"); apple.AttachBool("inStock", false); apple.AttachFloat("price", (float)0.8); GSObject apricoat = new GSObject(); apple.AttachString("name", "Apricoat"); apple.AttachString("color", "orange"); apple.AttachBool("inStock", true); apple.AttachFloat("price", (float)1.9); GSObject kiwi = new GSObject(); apple.AttachString("name", "Kiwi"); apple.AttachString("color", "green"); apple.AttachBool("inStock", true); apple.AttachFloat("price", (float)2.3); GSArray fruits = new GSArray(); fruits.AddGSObject(apple); fruits.AddGSObject(lemon); fruits.AddGSObject(apricoat); fruits.AddGSObject(kiwi); obj.AttachGSArray("fruits", fruits); Stopwatch w1 = Stopwatch.StartNew(); for (int i = 0; i < 50000; i++) { byte[] b = obj.ToGSBinary(); } w1.Stop(); Console.WriteLine(BitConverter.IsLittleEndian ? "Little Endian" : "Big Endian"); Console.WriteLine(w1.ElapsedMilliseconds + "ms"); } Here's the code for some of my other classes that are used in the code above. Most of it is repetitive. GSObject GSArray GSWrappedObject

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  • Cisco 837 not passing UDP traffic properly (was: DNS query problem)

    - by TessellatingHeckler
    We have a setup of ADSL line - Cisco 837 ADSL router - Zyxel ZyWall 35 firewall/NAT - Switch - LAN. It has been fine for years, suddenly DNS resolution stopped working from the LAN to public DNS servers. No changes that I know of, so I can't revert anything. Current behaviour: DNS requests from the LAN using TCP show up in the oubound firewall log, in the Cisco debug log, in the dns-server-firewall, in tcpdump on the DNS server, the answer comes back, it works fine. DNS requests from the LAN using UDP show up in the outbound firewall log, in the Cisco debug log, but does NOT show in the dns-server-firewall, not in tcpdump on the DNS server, times out. DNS requests from the Cisco using UDP show up in the dns-server-firewall and in tcpdump on the DNS server, answer received, works fine. netcat connections to port 53 or a random port by TCP show up in the dns-server-firewall netcat connections to port 53 or a random port by UDP do not show up in the dns-server-firewall Summary: TCP seems fine throughought. UDP works from the Cisco over the ADSL, and it works from the LAN to the Cisco, but it doesn't seem to cross the Cisco 837 properly. Update: confirmed with netcat that any UDP traffic from the LAN is affected, not just traffic to port 53. Update: If I change the firewall's external IP to any other IP in the subnet, this starts working. When I put it back, it stops working. I now suspect it's an ISP issue (does that sound plausible?), and am removing the Cisco config.

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  • How do I force Windows 7 to recognize my Projector?

    - by user63564
    I have a new Dell XPS with an NVIDIA GeForce GT 445M and an old (several years) Epson PowerLite Cinema 550 projector. Windows 7 refuses to recognize that the projector is connected under normal conditions (I'll get to the strange condition in a moment). Here are some things that I have already tried: Confirm that the projector continues to work well on my old Windows XP laptop. Confirm that the video cable (HDMI to HDMI) is connected Make sure the Dell laptop is plugged in to wall power at all times Reboot both the computer and the projector Click "Detect" under the "Connect to an External Display" Windows dialog (no reaction) Click "Rigorous Display Detection" under NVIDIA Control Panel (dialog: none found) Checked "Force Television Detection on startup" under "My display is not shown..." in NVIDIA Control Panel (no effect) Here's where it gets weird... My projector has three states: off, standby and on. Standby means the power switch on the back is on, but the projector is effectively off (no picture, no access to menu or controls). When I plug in the HDMI cable while the projector is in standby, Windows detects the projector! It lets me switch to Duplicate, Extend, or Project Only mode, and adjusts the resolution appropriately. A new Generic Plug-n-Play monitor shows up in my device manager. A "Seiko EPSON PJ" display shows up in my NVIDIA control panel. Then if I turn my projector on, Windows no longer recognizes the display. This is true whether I turn the projector on while the HDMI cable is plugged in, or if I unplug the HDMI cable while turning on the projector. Anyone have any ideas, because I'm completely stumped...?

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  • How can I calculate power consumption of my PC in Watt?

    - by Jitendra vyas
    How can I calculate power consumption of my PC in Watt, to prove my House owner ( I live on rent) , my PC doesn't consume much power? He blames me for Huge power bills even he too use Fridge, A.C. etc and his son watch the TV all the time. We both share one Power meter so for bill we pay 50%-50% but He is saying I use PC all the time even night i keep on for downloading. I just want to calculate power consumption of my PC then will calculate monthly expense of unit as per my City's per unit price for power. I've Windows: Microsoft Windows XP Professional 5.1.2600 Service Pack 3 Memory (RAM): 960 MB CPU Info: AMD Sempron(tm) Processor 2500+ CPU Speed: 1399.0 MHz Sound card: Vinyl AC'97 Audio (WAVE) Display Adapters: VIA/S3G UniChrome Pro IGP | NetMeeting driver | RDPDD Chained DD Monitors: 1 - 17inch LCD - LG Screen Resolution: 1280 X 768 - 32 bit Network: Network Present Network Adapters: Bluetooth Device (Personal Area Network) #2 | WAN (PPP/SLIP) Interface CD / DVD Drives: I: ELBY CLONEDRIVE COM Ports: COM1 | COM2 | COM7 | COM8 | COM9 | COM10 LPT Ports: LPT1 Mouse: 3 Button Wheel Mouse Present Hard Disks: C: 29.3GB | D: 29.3GB | E: 97.7GB | F: 97.7GB | G: 211.9GB USB Controllers: 5 host controllers. Firewire (1394): 1 host controllers. Manufacturer: Phoenix Technologies, LTD Product Make: MS-7142 AC Power Status: OnLine BIOS Info: AT/AT COMPATIBLE | 01/18/06 | VIAK8M - 42302e31 Motherboard: MICRO-STAR INTERNATIONAL CO., LTD MS-7142 Modem: ZTE USB Modem FFFE CDMA #2

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  • CENTOS 6 - How to install php-mysql when php-common @remi is present?

    - by Multitut
    I am having troubles adding mysql support for my php installation, this installation was made using a ready to use-package that came with our VPS. This is my php.info: http://snake.quetzalcoatech.com/info.php I am trying to install php mysql using: yum install php-mysql And get this output: Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.serveraxis.net * extras: mirror.fdcservers.net * updates: bay.uchicago.edu Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package php-mysql.x86_64 0:5.3.3-14.el6_3 will be installed --> Processing Dependency: php-common = 5.3.3-14.el6_3 for package: php-mysql-5.3.3-14.el6_3.x86_64 --> Finished Dependency Resolution Error: Package: php-mysql-5.3.3-14.el6_3.x86_64 (updates) Requires: php-common = 5.3.3-14.el6_3 Installed: php-common-5.3.17-2.el6.remi.x86_64 (@remi) php-common = 5.3.17-2.el6.remi Available: php-common-5.3.3-3.el6_2.8.x86_64 (base) php-common = 5.3.3-3.el6_2.8 Available: php-common-5.3.3-14.el6_3.x86_64 (updates) php-common = 5.3.3-14.el6_3 You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest I am a noob using Linux, so could you tell me which command should I use to install a compatible php-mysql module? Thank you so much!

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  • Dual VGA monitors with Quadro FX 580?

    - by dentrasi
    I have a machine with a Quadro FX 580 card (DVI and two Displayport). Attached to it are two 19" Acer screens, which are both (annoyingly) VGA. The first one works perfectly, with a DVI-VGA adaptor. The second one doesn't work. It's got a VGA cable, which goes into a VGA-DVI converted, which then goes into a DVI-Displayport converter. Initally, I was getting 'Cable Unplugged' on the screen, and it couldn't be seen by Windows or the nVidia control panel. After swapping the VGA-DVI adaptor (which works perfectly on another machine), Windows can now see the monitor. The nVidia panel sees the model and native resolution, but I get a constant 'No Signal' error. Switching to the other Displayport makes no difference. I suspect that the card is seeing a DVI connection plugged into it (nVididaCP shows the monitor as having a DVI connection), and it only sending out a digital signal because of this. Does anyone know of a solution (other than trying to get a Displayport-VGA adaptor), or of a way to force the card to see it as VGA? Thanks, ~Dentrasi

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  • yum error when installing memcached

    - by Jack
    Hi, trying to install memcached with "yum install memcached" and i'm getting all these errors which I have no idea how to solve. Setting up Install Process Resolving Dependencies -- Running transaction check --- Package memcached.x86_64 0:1.4.5-1.el5.rf set to be updated -- Processing Dependency: perl(AnyEvent) for package: memcached -- Processing Dependency: perl(AnyEvent::Socket) for package: memcached -- Processing Dependency: perl(AnyEvent::Handle) for package: memcached -- Processing Dependency: perl(YAML) for package: memcached -- Processing Dependency: perl(Term::ReadKey) for package: memcached -- Processing Dependency: libevent-1.1a.so.1()(64bit) for package: memcached -- Running transaction check --- Package compat-libevent-11a.x86_64 0:3.2.1-1.el5.rf set to be updated --- Package memcached.x86_64 0:1.4.5-1.el5.rf set to be updated -- Processing Dependency: perl(AnyEvent) for package: memcached -- Processing Dependency: perl(AnyEvent::Socket) for package: memcached -- Processing Dependency: perl(AnyEvent::Handle) for package: memcached -- Processing Dependency: perl(YAML) for package: memcached -- Processing Dependency: perl(Term::ReadKey) for package: memcached -- Finished Dependency Resolution memcached-1.4.5-1.el5.rf.x86_64 from rpmforge has depsolving problems -- Missing Dependency: perl(AnyEvent::Socket) is needed by package memcached-1.4.5-1.el5.rf.x86_64 (rpmforge) memcached-1.4.5-1.el5.rf.x86_64 from rpmforge has depsolving problems -- Missing Dependency: perl(AnyEvent) is needed by package memcached-1.4.5-1.el5.rf.x86_64 (rpmforge) memcached-1.4.5-1.el5.rf.x86_64 from rpmforge has depsolving problems -- Missing Dependency: perl(AnyEvent::Handle) is needed by package memcached-1.4.5-1.el5.rf.x86_64 (rpmforge) memcached-1.4.5-1.el5.rf.x86_64 from rpmforge has depsolving problems -- Missing Dependency: perl(YAML) is needed by package memcached-1.4.5-1.el5.rf.x86_64 (rpmforge) memcached-1.4.5-1.el5.rf.x86_64 from rpmforge has depsolving problems -- Missing Dependency: perl(Term::ReadKey) is needed by package memcached-1.4.5-1.el5.rf.x86_64 (rpmforge) Packages skipped because of dependency problems: compat-libevent-11a-3.2.1-1.el5.rf.x86_64 from rpmforge memcached-1.4.5-1.el5.rf.x86_64 from rpmforge The perl modules that its complaining about are already installed. Any ideas?

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  • Dependency issue installing PostGIS on CentOs 6.3

    - by Nyxynyx
    I am new to linux and is trying to install PostGIS2 after successfully installing PostgreSQL 9.1. The machine is running CentOS 6.3 and has cPanel installed. Problem: When I tried installing PostGIS using yum: yum install postgis2_91 postgis2_91-utils, I get the dependency error below. How should I solve this dependency problem and install PostGIS? Thank you so much! --> Finished Dependency Resolution Error: Package: postgis2_91-utils-2.0.1-1.rhel6.i686 (pgdg91) Requires: perl-DBD-Pg Error: Package: gdal-1.7.2-1.el6.i686 (pgdg91) Requires: libdapserver.so.7 Error: Package: gdal-1.7.2-1.el6.i686 (pgdg91) Requires: libdap.so.11 Error: Package: gdal-1.7.2-1.el6.i686 (pgdg91) Requires: libgeotiff.so.1.2 Error: Package: gdal-1.7.2-1.el6.i686 (pgdg91) Requires: libnetcdf.so.6 Error: Package: gdal-1.7.2-1.el6.i686 (pgdg91) Requires: libdapclient.so.3 Error: Package: gdal-1.7.2-1.el6.i686 (pgdg91) Requires: libhdf5.so.6 Error: Package: gdal-1.7.2-1.el6.i686 (pgdg91) Requires: librx.so.0 Error: Package: gdal-1.7.2-1.el6.i686 (pgdg91) Requires: libogdi.so.3 Error: Package: gdal-1.7.2-1.el6.i686 (pgdg91) Requires: libcfitsio.so.0 You could try using --skip-broken to work around the problem ** Found 6 pre-existing rpmdb problem(s), 'yum check' output follows: bandmin-1.6.1-5.noarch has missing requires of perl(bandmin.conf) bandmin-1.6.1-5.noarch has missing requires of perl(bmversion.pl) bandmin-1.6.1-5.noarch has missing requires of perl(services.conf) exim-4.77-1.i386 has missing requires of perl(SafeFile) frontpage-2002-SR1.2.i386 has missing requires of libexpat.so.0 sendmail-cf-8.14.4-8.el6.noarch has missing requires of sendmail = ('0', '8.14.4', '8.el6') Update An error still remains: Error: Package: postgis2_91-utils-2.0.1-1.rhel6.i686 (pgdg91) Requires: perl-DBD-Pg You could try using --skip-broken to work around the problem ** Found 6 pre-existing rpmdb problem(s), 'yum check' output follows: bandmin-1.6.1-5.noarch has missing requires of perl(bandmin.conf) bandmin-1.6.1-5.noarch has missing requires of perl(bmversion.pl) bandmin-1.6.1-5.noarch has missing requires of perl(services.conf) exim-4.77-1.i386 has missing requires of perl(SafeFile) frontpage-2002-SR1.2.i386 has missing requires of libexpat.so.0 sendmail-cf-8.14.4-8.el6.noarch has missing requires of sendmail = ('0', '8.14.4', '8.el6')

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  • GTX 280 purple snow on bootup, card works without drivers

    - by Brokar
    i have owned a ASUS GTX280 for 3 years now. The card has been great all along but i started having problems 10 days ago. I was playing Diablo 3 for 1 week on max settings no problems, then suddenly my display kept getting some weird purple/colours as soon as i booted and logged into windows. Went into safe mode, updated drivers and it kept crashing. Formatted PC, fresh windows install with new WHQL drivers again same problem. Uninstalled nvidia drivers and pc has been running great for 4 days now, ofcourse i cannot run games but everything works on 1680x1050 resolution and i can browse internet,watch movies and use my PC for everything but gaming. As soon as i install nvidia drivers PC won't boot. I only wanna game a few hours a week (very busy program with school this month so it might be a blessing that i cannot game) and i would love it if i could keep the card. I am looking to upgrde later on when i will have time for gaming but i wonder if i could still use the card somehow with different/new drivers (tried older drivers that came with the card on a CD aswell) tldr: PC works fine with no nvidia drivers (apart from gaming ofc). Once i install WHQL drivers or older ones, cannot even log into windows. Fix?

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  • How to setup DNS server behind a VPN

    - by Brian
    I want to host some websites behind a VPN and I need some help with the finer points of the configuration. Thus far I've settled on OpenVPN + Bind9 and I want to configure the domains like this: External DNS mail.example.com www.example.com vpn.example.com I want to be able to connect to the vpn using 'vpn.example.com'. Once connected I then want to be able to resolve anything which is '*.vpn.example.com' with the DNS server sitting behind the VPN. I know that OpenVPN can push DNS servers to clients when they connect. I am having trouble though with the DNS config, both internal and external. I've gone through a few tutorials etc. and tried to reason about it myself but I'm not getting anywhere. So my main question would be does the above configuration make sense? If so, any general pointers or examples would be greatly appreciated. Here's what I've tried so far based on this tutorial (I've redacted my domain with example.com). When I try the tests with dig at the end to check the resolution is working it fails. db.vpn.example.com $TTL 15m vpn.example.com. IN SOA ns.vpn.example.com. [email protected]. ( 2009010910 ;serial 900 ;refresh 900 ;retry 900 ;expire 900 ;minimum TTL ) vpn.example.com. IN NS ns.vpn.example.com. ns IN A 192.168.0.2 test IN A 192.168.0.2

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  • Is there a reason to use internal DNS over 8.8.8.8 ?

    - by skylarking
    I've inherited a LAN where there is really no name resolution being done for local resources... i.e. all users enter IP addresses manually to access printers and network shares. There are no LDAP servers or domains either....workstations simply connect to the network without authentication. DHCP is handled via a core switch... And DNS settings are also handed out by this same core switch. Currently, the DNS assignments are as such, and in this order: 10.1.1.50 / old Pentium III Windows 2003 box running DNS service- 128 MB RAM 169.200.x.x / ISP 4.2.2.2. / the well known public one There a couple thousand clients on the LAN....and most of the activity is web browsing ( this is an educational setting ). First of all, the server seems woefully underpowered for this task...yet there is virtually no slowness when web surfing by clients.... How much horsepower should a heavily used DNS server have ? I have also heard using 4.2.2.2 is a bad idea .... since it has been so overused... Finally, wouldn't it make sense to have a robust external DNS server listed first? ( Google's 8.8.8.8 would seem to be a logical candidate )

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  • 550 Forged HELO with postfix on debian lenny

    - by Martin Ahrer
    I'm running postfix on a debian lenny system. sending mail in general works without any problems. however some recipent mail systems return an error and I can't get a clue what is causing the problem. So far I suspect that this is either postfix setup itself or the reverse dns resolution. The mail server is running on a virtual server from my service provider. running the command hostname is returning my.domain however running host <ip-address> is returning some alias from the virtual server system. now i'm not quite sure if that is causing my problem???? The mail system <recipient-mail>: host mx0.recipient.domain[xxx.xxx.xxx.xxx] refused to talk to me: 550 Forged HELO: you are not my.domain Reporting-MTA: dns; my.domain X-Postfix-Queue-ID: 6A1135B08002 X-Postfix-Sender: rfc822; [email protected] Arrival-Date: Tue, 13 Apr 2010 17:50:36 +0200 (CEST) Final-Recipient: rfc822; recipient-mail Action: failed Status: 5.0.0 Remote-MTA: dns; mx0.recipient.domain Diagnostic-Code: smtp; 550 Forged HELO: you are not my.domain

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  • Failed to open the Parallels networking module

    - by user49204
    I'm running Parallels Desktop 7 on OSX Lion and encounter the issue in the subject on every time I'm trying to launch Parallels VM. The error message contains a hint to restore to network configuration default which does not help. As been advised by some forums to ran the following script: sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_hypervisor.kext" sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_hid_hook.kext" sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_usb_connect.kext" sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext" sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_vnic.kext" The output of: sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext" is: Diagnostics for /Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext: Warnings: The booter does not recognize symbolic links; confirm these files/directories aren't needed for startup: /Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext/Contents/CodeDirectory /Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext/Contents/CodeRequirements /Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext/Contents/CodeResources /Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext/Contents/CodeSignature Dependency Resolution Failures: No kexts found for these libraries: com.parallels.kext.prl_hypervisor I've noticed that prl_netbridge is not being loaded (when I'm trying to unload it, I'm notified it is not loaded). Am I doing something wrong? What can be the reason for such behaviour?

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  • Repairing Damage to VMWare Virtual Disk

    - by Lachlan McDonald
    Evening all, I've got a considerable problem I'm hoping to get some resolution on. I had two VMWare 6.5 virtual machines, one running Ubuntu 9.10 and the other Ubuntu 10.04. I used 9.10 as a testing server, so I could install a LAMP environment to prepare some code. Over the months I took a number of snapshots of this VM just in case something went wrong, and did a full copy of the entire VM a month ago. I created the 10.04 VM when Lucid Lynx launched so I could continue development on a fresh install. To get the files over, I simply added the 9.10 virtual disk into the 10.04 VM, grabbed some of the files I needed, and dismounted it. Unknown to me at the time, the changes to the 9.04 virtual disk meant that I could no longer boot it with the 9.10 VM. I'd always get the "The parent virtual disk has been modified since the child was created." error. I decided this was a good time to backup all the critical files, but now whenever I open the 9.04 disk to get the data it isn't in the same state as it was earlier. My question is; is it possible when I'm mounting the virtual disk that I'm not seeing the most recent snapshot, or in my blundering, have I lost the virtual disk. Cheers

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  • SQL Server 2005 - Linked Visual Foxpro Authorization

    - by John
    Here's the Scenario: We have an existing SQL 2000 Server that has a linked server to a share directory (on another server) containing Visual FoxPro tables; all connections work correctly. Porting the SQL 2000 server to a new SQL 2005 server results in questionable behavior: If you connect to the server, remotely, using Windows Authentication, you receive this error when running a query against the linked server: OLE DB provider "MSDASQL" for linked server "[linked server name]" returned message "[Microsoft][ODBC Visual FoxPro Driver]File 'MyTable.dbf' does not exist.". Msg 7350, Level 16, State 2, Line 2 Cannot get the column information from OLE DB provider "MSDASQL" for linked server "[linked server name]". However, logged in locally, the query works fine. The query also works correctly when logged in remotely, but using a SQL login. The only scenario I receive the error is when connected remotely, using windows authentication. As I mentioned before, this works on the SQL 2000 server, and both the old and new servers are running under the same network account (which has access to the folder the FoxPro files are in). Doing a little searching on the internet it looks like others have run into this situation, but I haven't found a resolution. Has anyone run into this before?

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