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  • Highlights from Google I/O 2011

    Highlights from Google I/O 2011 Google I/O brings together thousands of developers for two days of deep technical content, focused on building the next generation of web, mobile, and enterprise applications with Google and open web technologies such as Android, Google Chrome, Google APIs, Google Web Toolkit, App Engine, and more. From: GoogleDevelopers Views: 19561 281 ratings Time: 01:54 More in Science & Technology

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  • SMBfs mounting OK, listing OK, Read KO, smbclient OK

    - by Kwaio
    I've tried to make the title the most meaningfull I could but it still looks ugly. The premises. We are using RHEL3-U8 as OS on most servers here, don't ask me why or suggest to upgrade, it's not on today's schedule. That means kernel used is 2.4.21 I have no access to the remote server, but I know it is a netApp NAS rack. $> smbclient --version Version 3.0.9-1.3E.9 Here is the /etc/fstab line : //NASHOSTNAME/share /mnt/mydir smbfs ro,uid=123,gid=123,workgroup=XXXX,credentials=/somefile 0 0 Here is the following mount output line //NASHOSTNAME/share on /mnt/mydir type smbfs (0) The symptoms. I can list the share without problems, even cd in there. The issue appears if I try to read any file : $> cat /mnt/mydir/fileX.txt cat: /mnt/mydir/fileX.txt: Input/output error In the system logs (/var/log/kernel for example) the following errors appear. Jul 30 15:40:02 hostname kernel: smb_errno: class ERRHRD, code 31 from command 0x2 Jul 30 15:40:02 hostname kernel: smb_errno: class ERRHRD, code 31 from command 0x2 Jul 30 15:40:02 hostname kernel: smb_open: fileX.txt open failed, result=-5 Jul 30 15:40:02 hostname kernel: smb_errno: class ERRHRD, code 31 from command 0x2 Jul 30 15:40:02 hostname kernel: smb_errno: class ERRHRD, code 31 from command 0x2 Jul 30 15:40:02 hostname kernel: smb_open: fileX.txt open failed, result=-5 Jul 30 15:40:02 hostname kernel: smb_readpage_sync: fileX.txt open failed, error=-5 The ERRHRD code 0x001F error is "General hardware failure" although it seems samba sometimes uses it for a different purpose, see http://www.ubiqx.org/cifs/SMB.html [Strange behaviour Alert] Additionnal informations : There is another SMB mountpoint on the system pointing to a (linux) host using samba and this one works. What I have tried. I have tried adding debug=4 to the mounting options and remounting the share and the logs still look the same. I have tried to mount the share with smbclient and I am able to fetch files with the get command. Both targets are in the same subnet, so network problem should be out, even if the LAN goes through a VPN with optimizers, MTU has already been decreased to 1450. I can also mount the share through NFS but then the files are all root.root 700 and I need to read them with another user...

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  • GDL Presents: Internet Freedom and the ITU

    GDL Presents: Internet Freedom and the ITU This week, the world's governments are gathering in Dubai to discuss the future of the Internet. Some governments want to use this meeting to increase censorship and regulate the Internet. Hear from one of the advocacy groups that's been leading efforts in opposition, and what threats may be around the corner in 2013. From: GoogleDevelopers Views: 0 1 ratings Time: 01:00:00 More in Science & Technology

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  • PyPy 1.2 Released

    PyPy is a reimplementation of Python in Python, using advanced techniques to try to attain better performance than CPython . Many years of hard work have finally paid...

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  • Why is C++ used for game engines? How about its future in game engines?

    - by kasperov
    C++, as I have seen, is being heavily used in 3d video game engines.... Is it because of the performance issues, legecy code or libraries such as DriverX? If performance, libraries and code infrastructure are the reasons, dosen't that make C++ indispensible, at least for game engines? (ie, we have no other option even in the very distant future). I asked this because, I have the right to know the upcomming future trends in game engines.

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  • Experiments in Big Data Visualization on Maps

    Experiments in Big Data Visualization on Maps Brendan Kenny and Mano Marks continue their series on using the CanvasLayer library and HTML5 APIs to visualize large amounts of data on top of Google maps. This week they look at loading Shapefiles and KML directly in the browser and using WebGL to render their content over a map. From: GoogleDevelopers Views: 0 1 ratings Time: 00:00 More in Science & Technology

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  • Chapter 3: JavaFX Primer3

    JavaFX Script blends declarative programming concepts with object orientation. This provides a highly productive, yet flexible and robust, foundation for applications. However, with this flexibility comes responsibility from the developer.

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  • RadioButtons and Lambda Expressions

    - by MightyZot
    Radio buttons operate in groups. They are used to present mutually exclusive lists of options. Since I started programming in Windows 20 years ago, I have always been frustrated about how they are implemented. To make them operate as a group, you put your radio buttons in a group box. Conversely, to group radio buttons in HTML, you simply give them all the same name. Radio buttons with the same name or ID in HTML operate as one mutually exclusive group of options. In C#, all your radio buttons must have unique names and you use group boxes to group them. I’m in the process of converting some old code to C# and I’m tasked with creating a user control with groups of radio buttons on it. I started out writing the traditional switch…case statements to check the appropriate radio button based upon value, loops to uncheck them all, etc. Then it occurred to me that I could stick the radio buttons in a Dictionary or List and use Lambda expressions to make my code a lot more maintainable. So, here is what I ended up with: Here is a dictionary that contains my list of radio buttons and their values. I used their values as the keys, so that I can select them by value. Now, instead of using loops and switch…case statements to control the radio buttons, I use the lambda syntax and extension methods. Selecting a Radio Button by Value This code is inside of a property accessor, so “value” represents the value passed into the property accessor. The “First” extension method uses the delegate represented by the lambda expression to select the radio button (actually KeyValuePair) that represents the passed in value. Finally, the resulting checkbox is checked. Since the radio buttons are in the same group, they function as a group, the appropriate radio button is selected while the others are unselected. Reading the Value This is the get accessor for the property that returns the value of the checked radio button. Now, if you’re using binding, this code is likely not necessary; however, I didn’t want to use binding in this case, so I think this is a good alternative to the traditional loops and switch…case statements.

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  • Using WF4 WorkflowInvoker

    This article describes a design, implementation and usage of the custom service operation invoker for invoking a xaml workflow. It is based on the upcoming Microsoft .NET 4 Technology.

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  • Sécurité : deux millions de mots de passe WordPress réinitialisés suite à la découverte de contributions malicieuses à trois plug-ins populaires

    Sécurité : deux millions de mots de passe WordPress réinitialisés Suite à la découverte de contributions malicieuses à trois plug-ins populaires Automatic vient de lancer une dépêche de sécurité importante sur le blog officiel de WordPress, y notifiant tous les utilisateurs du Blogware/CMS de la découverte de plusieurs contributions malintentionnées au code de trois de ses plug-ins les plus populaires. Des commits acceptés sur le code de AddThis, WPtouch, et W3 Total Cache, se révèlent contenir des portes dérobées soigneusement dissimulées, créées et propagées par un ou plusieurs pirates non encore identifiés. Automatic assure que les contributions malicieuses ne pr...

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  • Does Your Browser Behave?

    Last June, we launched the Sputnik JavaScript conformance test suite, a comprehensive set of more than 5000 tests. Today we're releasing a test runner for Sputnik, that allows...

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