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• Client-Server MMOG & data structures sync when joining / playing

  - by plang

  After reading a few articles on MMOG architecture, there is still one point on which I cannot find much information: it has to do with how you keep in sync server data on the client, when you join, and while you play. A pretty vague question, I agree. Let me refine it: Let's say we have an MMOG virtual world subdivided into geographical cells. A player in a cell is mostly interested in what happens in the cell itself, and all the surrounding cells, not more. When joining the game for the first time, the only thing we can do is send some sort of "database dump" of the interesting cells to the client. When playing, I guess it would be very inefficient to do the same thing regularly. I imagine the best thing to do is to send "deltas" to the client, which would allow keeping the local database in sync. Now let's say the player moves, and arrives in another cell. Surrounding cells change, and for all the new cells the player subscribes, the same technique as used when joining the game has to be used: some sort of "database dump". This mechanic of joining/moving in a cell-based MMOG virtual world interests me, and I was wondering if there were tried and tested techniques in this domain. Thanks!

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• Ninject/DI: How to correctly pass initialisation data to injected type at runtime

  - by MrLane

  I have the following two classes: public class StoreService : IStoreService { private IEmailService _emailService; public StoreService(IEmailService emailService) { _emailService = emailService; } } public class EmailService : IEmailService { } Using Ninject I can set up bindings no problem to get it to inject a concrete implementation of IEmailService into the StoreService constructor. StoreService is actually injected into the code behind of an ASP.NET WebForm as so: [Ninject.Inject] public IStoreService StoreService { get; set; } But now I need to change EmailService to accept an object that contains SMTP related settings (that are pulled from the ApplicationSettings of the Web.config). So I changed EmailService to now look like this: public class EmailService : IEmailService { private SMTPSettings _smtpSettings; public void SetSMTPSettings(SMTPSettings smtpSettings) { _smtpSettings = smtpSettings; } } Setting SMTPSettings in this way also requires it to be passed into StoreService (via another public method). This has to be done in the Page_Load method in the WebForms code behind (I only have access to the Settings class in the UI layer). With manual/poor mans DI I could pass SMTPSettings directly into the constructor of EmailService and then inject EmailService into the StoreService constructor. With Ninject I don't have access to the instances of injected types outside of the objects they are injected to, so I have to set their data AFTER Ninject has already injected them via a separate public setter method. This to me seems wrong. How should I really be solving this scenario?

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• Count function on tree structure (non-binary)

  - by Spevy

  I am implementing a tree Data structure in c# based (largely on Dan Vanderboom's Generic implementation). I am now considering approach on handling a Count property which Dan does not implement. The obvious and easy way would be to use a recursive call which Traverses the tree happily adding up nodes (or iteratively traversing the tree with a Queue and counting nodes if you prefer). It just seems expensive. (I also may want to lazy load some of my nodes down the road). I could maintain a count at the root node. All children would traverse up to and/or hold a reference to the root, and update a internally settable count property on changes. This would push the iteration problem to when ever I want to break off a branch or clear all children below a given node. Generally less expensive, and puts the heavy lifting what I think will be less frequently called functions. Seems a little brute force, and that usually means exception cases I haven't thought of yet, or bugs if you prefer. Does anyone have an example of an implementation which keeps a count for an Unbalanced and/or non-binary tree structure rather than counting on the fly? Don't worry about the lazy load, or language. I am sure I can adjust the example to fit my specific needs. EDIT: I am curious about an example, rather than instructions or discussion. I know this is not technically difficult...

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• Moving from a static site to a CMS with new URLs and meta-data for pages

  - by Chris J

  Hi I am in the process of rebuilding a site from static pages to a CMS which will be using mod_rewrite to generate new page URLs. In this process our marketing people and myself have decided to tidy up the descriptions, keywords and titles. Eg: a page which who's URL is currently "website-name/about_us.html" and has a title of "website-name - something not quite page specific" will change to "website-name/about-us/" and title: "about us - website-name" and may have a few keywords and the description changed. Our goal with updating the meta data is to improve our page rankings and try to keep in line with some best practices for SEO. Though our current page rankings are quite good in many aspects, there is room for improvement. All of the pages will also have content changes (like rearranging heading tags, new menu on all pages, new content in footer, extra pieces of dynamic content relating to other pages). In this new site process I plan to use 301 redirects for all the old URLs pointing to the new URLs. My question is what can I expect to happen to the page rankings in Google, in the sort term and long term? Will this be like kicking off a new site which will have to build up trust over time or will the original page rankings have affect?

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• Skynet Big Data Demo Using Hexbug Spider Robot, Raspberry Pi, and Java SE Embedded (Part 3)

  - by hinkmond

  In Part 2, I described what connections you need to make for this demo using a Hexbug Spider Robot, a Raspberry Pi, and Java SE Embedded for programming. Here are some photos of me doing the soldering. Software engineers should not be afraid of a little soldering work. It's all good. See: Skynet Big Data Demo (Part 2) One thing to watch out for when you open the remote is that there may be some glue covering the contact points. Make sure to use an Exacto knife or small screwdriver to scrape away any glue or non-conductive material covering each place where you need to solder. And after you are done with your soldering and you gave the solder enough time to cool, make sure all your connections are marked so that you know which wire goes where. Give each wire a very light tug to make sure it is soldered correctly and is making good contact. There are lots of videos on the Web to help you if this is your first time soldering. Check out Laday Ada's (from adafruit.com) links on how to solder if you need some additional help: http://www.ladyada.net/learn/soldering/thm.html If everything looks good, zip everything back up and meet back here for how to connect these wires to your Raspberry Pi. That will be it for the hardware part of this project. See, that wasn't so bad. Hinkmond

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• How should I track approval workflow when users at every security level can create a request?

  - by Eric Belair

  I am writing a new application that allows users to enter requests. Once a request is entered, it must follow an approval workflow to be finally approved by a user the highest security level. So, let's say a user at Security Level 1 enters a request. This request must be approved by his superior - a user at Security Level 2. Once the Security Level 2 user approves it, it must be approved by a user at Security Level 3. Once the Security Level 3 user approves it, it is considered fully approved. However, users at any of the three Security Levels can enter requests. So, if a Security Level 3 user enters a request, it is automatically considered "fully approved". And, if a Security Level 2 user enters a request, it must only be approved by a Security Level 3 user. I'm currently storing each approval status in a Database Log Table, like so: STATUS_ID (PK) REQUEST_ID STATUS STATUS_DATE -------------- ------------- ---------------- ----------------------- 1 1 USER_SUBMIT 2012-09-01 00:00:00.000 2 1 APPROVED_LEVEL2 2012-09-01 01:00:00.000 3 1 APPROVED_LEVEL3 2012-09-01 02:00:00.000 4 2 USER_SUBMIT 2012-09-01 02:30:00.000 5 2 APPROVED_LEVEL2 2012-09-01 02:45:00.000 My question is, which is a better design: Record all three statuses for every request ...or... Record only the statuses needed according to the Security Level of the user submitting the request In Case 2, the data might look like this for two requests - one submitted by Security Level 2 User and another submitted by Security Level 3 user: STATUS_ID (PK) REQUEST_ID STATUS STATUS_DATE -------------- ------------- ---------------- ----------------------- 1 3 APPROVED_LEVEL2 2012-09-01 01:00:00.000 2 3 APPROVED_LEVEL3 2012-09-01 02:00:00.000 3 4 APPROVED_LEVEL3 2012-09-01 02:00:00.000

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• ASP.NET MVVM Handling multiple Data Transfer Objects on a single page

  - by meffect

  I have an asp.net mvc "edit" page which allows the user to make edits to the parent entity, and then also "create" child entities on the same page. Note: I'm making these data transfer objects up. public class CustomerViewModel { public int Id { get; set; } public Byte[] Timestamp { get; set; } public string CustomerName { get; set; } public etc.. public CustomerOrderCreateViewModel CustomerOrderCreateViewModel { get; set; } } In my view I have two html form's. One for Customer "edit" Http Posts, and the other for CustomerOrder "create" Http Posts. In the view page, I load the CustomerOrder "create" form in using: <div id="CustomerOrderCreate"> @Html.Partial("Vendor/_CustomerOrderCreatePartial", Model.CustomerOrderCreateViewModel) </div> The CustomerOrder html form action posts to a different controller HttpPost ActionResult than the Customer "edit" Action Result. My concern is this, on the CustomerOrder controller, in the HttpPost ActionResult [HttpPost] public ActionResult Create(CustomerOrderCreateViewModel vm) { if (!ModelState.IsValid) { return [What Do I Return Here] } ...[Persist to database code]... } I don't know what to return if the model state isn't valid. Right now it's not a problem, because jquery unobtrusive validation handles validation on the client. But what if I need more complex validation (ie: the server needs to handle the validation).

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• Storing data offline with javascript

  - by Walker

  My question is about storing data offline and potentially whether I will need to bring in an outside programmer or could this be learned within a few weeks? The website I am working on will have an interface where users will login and go through a series of quizzes in the form of checkbox, drop down menus, and others. Each page/quiz area could have 20-100 total checkboxes in a series of 3-5 rows because of the comprehensive nature of course. This I can do - I know how to code the quiz and return a correct or incorrect answer based on each individual checkbox and present a cumulative score (ie: you got 57% correct). The issue lies in the fact that I would like to save the users results and keep them informed of their progress. When they complete all of the quizzes, I would like to have a visual output of their performance in each area. Storing the output from their results offline is where I think I may run into a problem with my lack of coding experience. I would also like to have a sidebar with their progress of each section (10-15) with a green percentage completion bar or a % correct which would draw from this. I have never had to code something that stores information like this offline - so back to my question - would it be better to learn the language needed or bring in a coder/developer for the back end stuff.

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• SQL to XML open data made simple

  - by drrwebber

  The perennial question for people is how to easily generate XML from SQL table content?  The latest CAM Editor release really tackles this head on by providing a powerful and simple toolset.  Firstly you can visually browse your SQL tables and then drag and drop from columns and tables into the XML structure editor.   This gives you a code-free method of describing the transformation you require.  So you do not need to know about the vagaries of XML and XSD schema syntax. Second you can map directly into existing industry domain XML exchange structures in the XML visual editor, again no need to wrestle with XSD schema, you have WYSIWYG visual control over what your output will look like. If you do not have a target XML structure and need to build one from scratch, then the CAM Editor makes this simple.  Switch the SQL viewer into designer mode, then take your existing SQL table and drag and drop it into the XML structure editor.  Automatically the XML wizard tool will take your SQL column names and definitions and create equivalent XML for you and insert the mappings. Simply save the structure template, and run the Open Data generator menu option, and your XML is built for you. Completely code-free template driven development. To see this in action, see our video demonstration links and then download the tools and samples and try it yourself.

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• Learning how to design knowledge and data flow [closed]

  - by max

  In designing software, I spend a lot of time deciding how the knowledge (algorithms / business logic) and data should be allocated between different entities; that is, which object should know what. I am asking for advice about books, articles, presentations, classes, or other resources that would help me learn how to do it better. I code primarily in Python, but my question is not really language-specific; even if some of the insights I learn don't work in Python, that's fine. I'll give a couple examples to clarify what I mean. Example 1 I want to perform some computation. As a user, I will need to provide parameters to do the computation. I can have all those parameters sent to the "main" object, which then uses them to create other objects as needed. Or I can create one "main" object, as well as several additional objects; the additional objects would then be sent to the "main" object as parameters. What factors should I consider to make this choice? Example 2 Let's say I have a few objects of type A that can perform a certain computation. The main computation often involves using an object of type B that performs some interim computation. I can either "teach" A instances what exact parameters to pass to B instances (i.e., make B "dumb"); or I can "teach" B instances to figure out what needs to be done when looking at an A instance (i.e., make B "smart"). What should I think about when I'm making this choice?

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• Design practice for securing data inside Azure SQL

  - by Sid

  Update: I'm looking for a specific design practice as we try to build-our-own database encryption. Azure SQL doesn't support many of the encryption features found in SQL Server (Table and Column encryption). We need to store some sensitive information that needs to be encrypted and we've rolled our own using AesCryptoServiceProvider to encrypt/decrypt data to/from the database. This solves the immediate issue (no cleartext in db) but poses other problems like Key rotation (we have to roll our own code for this, walking through the db converting old cipher text into new cipher text) metadata mapping of which tables and which columns are encrypted. This is simple when it's just couple of columns (send an email to all devs/document) but that quickly gets out of hand ... So, what is the best practice for doing application level encryption into a database that doesn't support encryption? In particular, what is a good design to solve the above two bullet points? If you had specific schema additions would love it if you could give details ("Have a NVARCHAR(max) column to store the cipher metadata as JSON" or a SQL script/commands). If someone would like to recommend a library, I'd be happy to stay away from "DIY" too. Before going too deep - I assume there isn't any way I can add encryption support to Azure by creating a stored procedure, right?

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• A tip: Updating Data in SharePoint 2010 using REST API

  - by Sahil Malik

  SharePoint 2010 Training: more information Here is a little tip that will save you hours of head scratching. See there are two ways to update data in SharePoint using REST based API. A PUT request is used to update an entire entity. If no values are specified for fields in the entity, the fields will be set to default values. A MERGE request is used to update only those field values that have changed. Any fields that are not specified by the operation will remain set to their current value.   Now, sit back and think about it. You are going to update the entire entity! Hmm. Which means, you need to a) specify every column value, and b) ensure that the read only values match what was supplied to you. What a pain in the donkey! So 99/100 times, a PUT request will give you a HTTP 500 internal server error occurred, which is just so helpful. Read full article ....

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• Data Access Objects old fashioned? [on hold]

  - by Bono

  A couple of weeks ago I delivered some work for a university project. After a code review with some teachers I got some snarky remarks about the fact that I was (still) using Data Access Objects. The teacher in question who said this mentions the use of DAO's in his classes and always says something along the lines of "Back then we always used DAO's". He's a big fan of Object Relational Mapping, which I also think is a great tool. When I was talking about this with some of my fellow students, they also mentioned that they prefer the use of ORM, which I can understand. It did make me wonder though, is using DAO's really so old fashioned? I know that at my work DAO's are still being used, but this is due to the fact that some of the code is rather old and therefor can't be coupled with ORM. We also do use ORM at my work. Trying to find some more information on Google or Stack Exchange sites didn't really enlighten me. Should I step away from the use of DAO's and only start implementing ORM? I just feel that ORM's can be a bit overkill for some simple projects. I'd love to hear your opinions (or facts) about this.

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• Simplifying data search using .NET

  - by Peter

  An example on the asp.net site has an example of using Linq to create a search feature on a Music album site using MVC. The code looks like this - public ActionResult Index(string movieGenre, string searchString) { var GenreLst = new List<string>(); var GenreQry = from d in db.Movies orderby d.Genre select d.Genre; GenreLst.AddRange(GenreQry.Distinct()); ViewBag.movieGenre = new SelectList(GenreLst); var movies = from m in db.Movies select m; if (!String.IsNullOrEmpty(searchString)) { movies = movies.Where(s => s.Title.Contains(searchString)); } if (!string.IsNullOrEmpty(movieGenre)) { movies = movies.Where(x => x.Genre == movieGenre); } return View(movies); } I have seen similar examples in other tutorials and I have tried them in a real-world business app that I develop/maintain. In practice this pattern doesn't seem to scale well because as the search criteria expands I keep adding more and more conditions which looks and feels unpleasant/repetitive. How can I refactor this pattern? One idea I have is to create a column in every table that is "searchable" which could be a computed column that concatenates all the data from the different columns (SQL Server 2008). So instead of having movie genre and title it would be something like. if (!String.IsNullOrEmpty(searchString)) { movies = movies.Where(s => s.SearchColumn.Contains(searchString)); } What are the performance/design/architecture implications of doing this? I have also tried using procedures that use dynamic queries but then I have just moved the ugliness to the database. E.g. CREATE PROCEDURE [dbo].[search_music] @title as varchar(50), @genre as varchar(50) AS -- set the variables to null if they are empty IF @title = '' SET @title = null IF @genre = '' SET @genre = null SELECT m.* FROM view_Music as m WHERE (title = @title OR @title IS NULL) AND (genre LIKE '%' + @genre + '%' OR @genre IS NULL) ORDER BY Id desc OPTION (RECOMPILE) Any suggestions? Tips?

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• 3D Box Collision Data Import

  - by cboe

  I'm trying to implement a collision system using oriented bounding boxes, using a center for the box, it's extents as a 3D Vector and a rotation matrix, which is all stuff I picked up online and seem to be somewhat the standard. Detecting the center is no problem so I'm gonna leave these out here. My problem however is importing the data from a 3D file. Say I've placed a box with 2 units length on each side aligned to the world axis. The logic results here are extents of 1,1,1 and I use an identity matrix for rotation - easy. However I'm stuck when I rotate the box in the 3D program, say 30 degrees each axis. How would I parse the box? I only have these 8 vertices as information, and I guess what I would need to do is to find out the rotation of said box, apply it to the vertices so they are aligned to world axes and then calculate the extents out of that. How do I get the rotation of the box when I only have the vertex information of the box available?

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• Handling timeout in network application

  - by user2175831

  How can I handle timeouts in a network application. I'm implementing a provisioning system on a Linux server, the code is huge so I'm going to put the algorithm, it works as like this Read provisioning commands from file Send it to another server using TCP Save the request in hash. Receive the response then if successful response received then remove request from hash if failed response received then retry the message The problem I'm in now is when the program didn't receive the response for a timeout reason then the request will be waiting for a response forever and won't be retried. And please note that I'll be sending hundreds of commands and I have to monitor the timeout commands for all of them. I tried to use timer but that didn't help because I'll end up with so many waiting timers and I'm not sure if this is a good way of doing this. The question is how can I save the message in some data structure and check to remove or retry it later when there is no response from the other end? Please note that I'm willing to change the algorithm to anything you suggest that could deal with the timeouts.

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• encfs error while decoding the data

  - by migrator

  I have installed encfs and started using it to secure all my personal & office data and it was working absolutely fine until 2 hours back. The setup is like this. I have a folder in Copy folder called OfficeData which gets synchronized with my Copy folder When I login into the system I use the command encfs ~/Copy/OfficeData ~/Documents/OfficeData Once my work is over I dismount with the command fusermount -u ~/Documents/OfficeData All this data get synchronized with my desktop and with my mobile phone (as a backup) Today when I mounted, the folder got mounted by no directories and files present in that folder. I was worried and read man encfs which gave me to run the command encfs -v -f ~/Copy/OfficeData ~/Documents/OfficeData 2> encfs-OfficeData-report.txt. The below is the output of the file encfs-OfficeData-report.txt. The directory "/home/sri/Documents/OfficeData" does not exist. Should it be created? (y,n) 13:16:26 (main.cpp:523) Root directory: /home/sri/Copy/OfficeData/ 13:16:26 (main.cpp:524) Fuse arguments: (fg) (threaded) (keyCheck) encfs /home/sri/Documents/OfficeData -f -s -o use_ino -o default_permissions 13:16:26 (FileUtils.cpp:177) version = 20 13:16:26 (FileUtils.cpp:181) found new serialization format 13:16:26 (FileUtils.cpp:199) subVersion = 20100713 13:16:26 (Interface.cpp:165) checking if ssl/aes(3:0:2) implements ssl/aes(3:0:0) 13:16:26 (SSL_Cipher.cpp:370) allocated cipher ssl/aes, keySize 32, ivlength 16 13:16:26 (Interface.cpp:165) checking if ssl/aes(3:0:2) implements ssl/aes(3:0:0) 13:16:26 (SSL_Cipher.cpp:370) allocated cipher ssl/aes, keySize 32, ivlength 16 13:16:26 (FileUtils.cpp:1620) useStdin: 0 13:16:46 (Interface.cpp:165) checking if ssl/aes(3:0:2) implements ssl/aes(3:0:0) 13:16:46 (SSL_Cipher.cpp:370) allocated cipher ssl/aes, keySize 32, ivlength 16 13:16:49 (FileUtils.cpp:1628) cipher key size = 52 13:16:49 (Interface.cpp:165) checking if nameio/block(3:0:1) implements nameio/block(3:0:0) 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn: No such file or directory 13:16:49 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 4188221457101129840, fileIV = 0 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn: No such file or directory 13:16:49 (encfs.cpp:138) getattr error: No such file or directory 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF: No such file or directory 13:16:49 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 16725694203599486310, fileIV = 0 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF: No such file or directory 13:16:49 (encfs.cpp:138) getattr error: No such file or directory 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/tVglci2rgp9o8qE-m9AvX6JNj1lQs-ER0OvnxfOb30Z,3,: No such file or directory 13:16:49 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 1354483141023495884, fileIV = 0 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/tVglci2rgp9o8qE-m9AvX6JNj1lQs-ER0OvnxfOb30Z,3, 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/tVglci2rgp9o8qE-m9AvX6JNj1lQs-ER0OvnxfOb30Z,3, 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/tVglci2rgp9o8qE-m9AvX6JNj1lQs-ER0OvnxfOb30Z,3,: No such file or directory 13:16:49 (encfs.cpp:138) getattr error: No such file or directory 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn: No such file or directory 13:16:49 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 16720606331386655431, fileIV = 0 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn: No such file or directory 13:16:49 (encfs.cpp:138) getattr error: No such file or directory 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn: No such file or directory 13:16:49 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 16720606331386655431, fileIV = 0 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn: No such file or directory 13:16:49 (encfs.cpp:138) getattr error: No such file or directory 13:19:31 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:19:31 (FileNode.cpp:127) calling setIV on (null) 13:19:31 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:19:31 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:19:31 (encfs.cpp:685) doing statfs of /home/sri/Copy/OfficeData 13:19:32 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:19:32 (FileNode.cpp:127) calling setIV on (null) 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/LuT8R,DlpRnNH9b,fjWiKHKc: No such file or directory 13:19:32 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 13735228085838055696, fileIV = 0 13:19:32 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/LuT8R,DlpRnNH9b,fjWiKHKc 13:19:32 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/LuT8R,DlpRnNH9b,fjWiKHKc 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/LuT8R,DlpRnNH9b,fjWiKHKc: No such file or directory 13:19:32 (encfs.cpp:138) getattr error: No such file or directory 13:19:32 (encfs.cpp:685) doing statfs of /home/sri/Copy/OfficeData 13:19:32 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:19:32 (FileNode.cpp:127) calling setIV on (null) 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn: No such file or directory 13:19:32 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 4188221457101129840, fileIV = 0 13:19:32 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn 13:19:32 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn: No such file or directory 13:19:32 (encfs.cpp:138) getattr error: No such file or directory 13:19:32 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:19:32 (FileNode.cpp:127) calling setIV on (null) 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF: No such file or directory 13:19:32 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 16725694203599486310, fileIV = 0 13:19:32 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF 13:19:32 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF: No such file or directory 13:19:32 (encfs.cpp:138) getattr error: No such file or directory 13:19:32 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:19:32 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:19:32 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:19:32 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:19:32 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:19:32 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:24:10 (openssl.cpp:48) Allocating 41 locks for OpenSSL Please help me Thanks in advance.

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• Error trapping for a missing data source in a Spring MVC / Spring JDBC web app [migrated]

  - by Geeb

  I have written a web app that uses Spring MVC libraries and Spring JDBC to connect to an Oracle DB. (I don't use any ORM type libraries as I create stored procedures on Oracle that do my stuff and I'm quite happy with that.) I use a connection pool to Oracle managed by the Tomcat container The app generally works absolutely fine by the way! BUT... I noticed the other day when I tried to set up the app on another Tomcat instance that I had forgotten to configure the connection pool and obviously the app could not get hold of an org.apache.commons.dbcp.BasicDataSource object, so it crashed. I define the pool params in the tomcat "context.conf" In my "web.xml" I have: <servlet> <servlet-name>appServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/Spring/appServlet/servlet-context.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>appServlet</servlet-name> <!-- Map *everything* to appServlet --> <url-pattern>/</url-pattern> </servlet-mapping> <resource-ref> <description>Oracle Datasource example</description> <res-ref-name>jdbc/ora1</res-ref-name> <res-type>org.apache.commons.dbcp.BasicDataSource</res-type> <res-auth>Container</res-auth> </resource-ref> And I have a Spring "servlet-context.xml" where JNDI is used to map the data source object provided by the connection pool to a Spring bean with the ID of "dataSource": <jee:jndi-lookup id="dataSource" jndi-name="java:comp/env/jdbc/ora1" resource-ref="true" /> Here's the question: Where do I trap the case where the database cannot be accessed for whatever reason? I don't want the user to see a yard-and-a-half of Java stack trace in their browser, rather a nicer message that tells them there is a database problem etc. It seems that my app tries to configure the "dataSource" bean (in "servlet-context.xml") before any code has tested it can actually provide a dataSource object from the pool?! Maybe I'm not fully understanding exactly what is going on in these stages of the app firing up ... Thanks for any advice!

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• SQLAuthority News – New Book Released – SQL Server Interview Questions And Answers

  - by pinaldave

  Two days ago, on birthday of my blog – I asked simple question – Guess! What is in this box? I have received lots of interesting comments on the blog about what is in it. Many of you got it absolutely incorrect and many got it close to the right answer but no one got it 100% correct. Well, no issue at all, I am going to give away the price to whoever has the closest answer first in personal email. Here is the answer to the question about what is in the box? Here it is – the box has my new book. In fact, I should say our new book as I co-authored this book with my very good friend Vinod Kumar. We had real blast writing this book together and had lots of interesting conversation when we were writing this book. This book has one simple goal – “master the basics.” This book is not only for people who are preparing for interview. This book is for every one who wants to revisit the basics and wants to prepare themselves to the technology. One always needs to have practical knowledge to do their duty efficiently. This book talks about more than basics. There are multiple ways to present learning – either we can create simple book or make it interesting. We have decided the learning should be interactive and have opted for Interview Questions and Answer format. Here is quick interview which we have done together. Details of the books are here The core concept of this book will continue to evolve over time. I am sure many of you will come along with us on this journey and submit your suggestions to us to make this book a key reference for anybody who wants to start with SQL server. Today we want to acknowledge the fact that you will help us keep this book alive forever with the latest updates. We want to thank everyone who participates in this journey with us. You can get the books from [Amazon] | [Flipkart]. Read Vinod‘s blog post. Do not forget to wish him happy birthday as today is his birthday and also book release day – two reason to wish him congratulations. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Best Practices, Data Warehousing, Database, Pinal Dave, PostADay, SQL, SQL Authority, SQL Interview Questions and Answers, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Book Review, SQLAuthority News, SQLServer, T SQL, Technology

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• SQL – Contest to Get The Date – Win USD 50 Amazon Gift Cards and Cool Gift

  - by Pinal Dave

  If you are a regular reader of this blog – you will find no issue at all in resolving this puzzle. This contest is based on my experience with NuoDB. If you are not familiar with NuoDB, here are few pointers for you. Step by Step Guide to Download and Install NuoDB – Getting Started with NuoDB Quick Start with Admin Sections of NuoDB – Manage NuoDB Database Quick Start with Explorer Sections of NuoDB – Query NuoDB Database In today’s contest you have to answer following questions: Q 1: Precision of NOW() What is the precision of the NuoDB’s NOW() function, which returns current date time? Hint: Run following script on NuoDB Console Explorer section: SELECT NOW() AS CurrentTime FROM dual; Here is the image. I have masked the area where the time precision is displayed. Q 2: Executing Date and Time Script When I execute following script - SELECT 'today' AS Today, 'tomorrow' AS Tomorrow, 'yesterday' AS Yesterday FROM dual; I will get the following result:   NOW – What will be the answer when we execute following script? and WHY? SELECT CAST('today' AS DATE) AS Today, CAST('tomorrow' AS DATE) AS Tomorrow, CAST('yesterday'AS DATE) AS Yesterday FROM dual; HINT: Install NuoDB (it takes 90 seconds). Prizes: 2 Amazon Gifts 2 Limited Edition Hoodies (US resident only)   Rules: Please leave an answer in the comments section below. You must answer both the questions together in a single comment. US resident who wants to qualify to win NuoDB apparel please mention your country in the comment. You can resubmit your answer multiple times, the latest entry will be considered valid. Last day to participate in the puzzle is June 24, 2013. All valid answer will be kept hidden till June 24, 2013. The winner will be announced on June 25, 2013. Two Winners will get USD 25 worth Amazon Gift Card. (Total Value = 25 x 2 = 50 USD) The winner will be selected using a random algorithm from all the valid answers. Anybody with a valid email address can take part in the contest. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Puzzle, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: NuoDB

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• More Efficient Data Structure for Large Layered Tile Map

  - by Stupac

  It seems like the popular method is to break the map up into regions and load them as needed, my problem is that in my game there are many AI entities other than the player out performing actions in virtually all the regions of the map. Let's just say I have a 5000x5000 map, when I use a 2D array of byte's to render it my game uses around 17 MB of memory, as soon as I change that data structure to a my own defined MapCell class (which only contains a single field: byte terrain) my game's memory consumption rockets up to 400+ MB. I plan on adding layering, so an array of byte's won't cut it and I figure I'd need to add a List of some sort to the MapCell class to provide objects in the layers. I'm only rendering tiles that are on screen, but I need the rest of the map to be represented in memory since it is constantly used in Update. So my question is, how can I reduce the memory consumption of my map while still maintaining the above requirements? Thank you for your time! Here's a few snippets my C# code in XNA4: public static void LoadMapData() { // Test map generations int xSize = 5000; int ySize = 5000; MapCell[,] map = new MapCell[xSize,ySize]; //byte[,] map = new byte[xSize, ySize]; Terrain[] terrains = new Terrain[4]; terrains[0] = grass; terrains[1] = dirt; terrains[2] = rock; terrains[3] = water; Random random = new Random(); for(int x = 0; x < xSize; x++) { for(int y = 0; y < ySize; y++) { //map[x,y] = new MapCell(terrains[random.Next(4)]); map[x,y] = new MapCell((byte)random.Next(4)); //map[x, y] = (byte)random.Next(4); } } testMap = new TileMap(map, xSize, ySize); // End test map setup currentMap = testMap; } public class MapCell { //public TerrainType terrain; public byte terrain; public MapCell(byte itsTerrain) { terrain = itsTerrain; } // the type of terrain this cell is treated as /*public Terrain terrain { get; set; } public MapCell(Terrain itsTerrain) { terrain = itsTerrain; }*/ }

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• [EF + Oracle] Inserting Data (Sequences) (2/2)

  - by JTorrecilla

  Prologue In the previous chapter we have see how to create DB records with EF, now we are going to Some Questions about Oracle.   ORACLE One characteristic from SQL Server that differs from Oracle is “Identity”. To all that has not worked with SQL Server, this property, that applies to Integer Columns, lets indicate that there is auto increment columns, by that way it will be filled automatically, without writing it on the insert statement. In EF with SQL Server, the properties whose match with Identity columns, will be filled after invoking SaveChanges method. In Oracle DB, there is no Identity Property, but there is something similar. Sequences Sequences are DB objects, that allow to create auto increment, but there are not related directly to a Table. The syntax is as follows: name, min value, max value and begin value. 1: CREATE SEQUENCE nombre_secuencia 2: INCREMENT BY numero_incremento 3: START WITH numero_por_el_que_empezara 4: MAXVALUE valor_maximo | NOMAXVALUE 5: MINVALUE valor_minimo | NOMINVALUE 6: CYCLE | NOCYCLE 7: ORDER | NOORDER 8:    How to get sequence value? To obtain the next val from the sequence: 1: SELECT nb_secuencia.Nextval 2: From Dual Due to there is no direct way to indicate that a column is related to a sequence, there is several ways to imitate the behavior: Use a Trigger (DB), Use Stored Procedures or Functions(…) or my particularly option. EF model, only, imports Table Objects, Stored Procedures or Functions, but not sequences. By that, I decide to create my own extension Method to invoke Next Val from a sequence: 1: public static class EFSequence 2: { 3: public static int GetNextValue(this ObjectContext contexto, string SequenceName) 4: { 5: string Connection = ConfigurationManager.ConnectionStrings["JTorrecillaEntities2"].ConnectionString; 6: Connection=Connection.Substring(Connection.IndexOf(@"connection string=")+19); 7: Connection = Connection.Remove(Connection.Length - 1, 1); 8: using (IDbConnection con = new Oracle.DataAccess.Client.OracleConnection(Connection)) 9: { 10: using (IDbCommand cmd = con.CreateCommand()) 11: { 12: con.Open(); 13: cmd.CommandText = String.Format("Select {0}.nextval from DUAL", SequenceName); 14: return Convert.ToInt32(cmd.ExecuteScalar()); 15: } 16: } 17:  18: } 19: } This Object Context’s extension method are going to invoke a query with the Sequence indicated by parameter. It takes the connection strings from the App settings, removing the meta data, that was created by VS when generated the EF model. And then, returns the next value from the Sequence. The next value of a Sequence is unique, by that, when some concurrent users are going to create records in the DB using the sequence will not get duplicates. This is my own implementation, I know that it could be several ways to do and better ways. If I find any other way, I promise to post it. To use the example is needed to add a reference to the Oracle (ODP.NET) dll.

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• Increase Availability for Data Center Virtual Environments

  - by Antoinette O'Sullivan

  With Oracle VM, you can increase availability and add flexibility for data center virtual environments. To get started, take training on Oracle VM Server for x86 and Oracle VM Server for SPARC as appropriate for your systems. You can take these live instructor-led courses from your own desk as a live-virtual event or travel to an education center for an in-class event. The Oracle VM Administration: Oracle VM Server for x86 course, in 3 days, teaches you about creating NFS and iSCI repositories, migration, cloning and exercising high availabillity. In-class events already on the schedule include:  Location  Date  Delivery Language  Zagreb, Croatia  11 November 2013  Croatian  Prague, Czech Republic  21 October 2013  Czech  Ballerup, Denmark  26 August 2013  English  Bordeaux, France  18 September 2013  French  Paris, France  9 October 2013  French  Strasbourg, France  11 September 2013  French  Hamburg, Germany  30 Septemeber 2013  German  Munich, Germany  28 October 2013  German  Budapest, Hungary  9 September 2013  Hungarian  Riga, Latvia  30 September 2013  Latvian  Oslo, Norway  16 September 2013  English  Warsaw, Poland  28 October 2013  Polish  Bucharest, Romania  14 October 2013  English  Istanbul, Turkey  23 December 2013  Turkish  Indonesia, Jakarta  19 August 2013  English  Canberra, Australia  4 November 2013  English  Melbourne, Australia  6 November 2013  English  Sydney, Australia  25 November 2013  English  San Francisco, CA, United States  16 September 2013  English  Roseville, MN, United States  21 October 2013  English  St Louis, MO, United States  11 November 2013  English  Reston, VA, United States  31 July 2013  English  Buenos Aires, Argentina  21 August 2013  Spanish The Oracle VM Server for SPARC: Installation and Configuration course, in 2 days, teaches you about configuring control and service domains, creating guest domains, using virtual disks and networks, and migration. In-class events already on the schedule include:  Location  Date  Delivery Language  Budapest, Hungary  12 September 2013  Hungarian  Prague, Czech Republic  9 September 2013  Czech  Colombes, France  7 October 2013  French  Stuttgart, Germany  28 October 2013  German  Madrid, Spain  5 September 2013  Spanish  Istanbul, Turkey 30 September 2013  Turkish   Petaling Jaya, Malaysia 15 August 2013  English   Singapore 5 August 2013  English   Cnaberra, Australia  12 August 2013 English  Melbourne, Australia  30 October 2013 English  Sydney, Australia  26 August 2013 English To register for a course or to learn more about Oracle's virtualization curriculum, go to http://education.oracle.com/virtualization.

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• Zabbix Proxy not collecting data

  - by Jordan Eunson

  I have a working Zabbix 1.8.2 server collecting data for our office and our colo facility. However the link between the colo and office is flaky. What I'm trying to do is setup a proxy on the colo side to have a 1 hour cache and relay the data to our primary server at the office. Our zabbix server is compiled from source and uses a mysql database I've followed the instructions found in the zabbix documentation to compile the proxy using a sqlite3 database. I add the proxy to zabbix under Administration-DM-Proxies. The zabbix server "sees" the proxy because the "last seen" field is always under 60s. However when I assign a colo host to the proxy I stop receiving data from it. The colo host's zabbix_agentd.log file says this: 29343:20100622:124847 Timeout while answering request 29343:20100622:124847 Getting list of active checks failed. Will retry after 60 seconds The zabbix_proxy.log says this. 2041:20100622:123131.760 Deleted 0 records from history [0.000994 seconds] 2028:20100622:124131.671 Error while receiving answer from server [ZBX_TCP_READ() failed I also am unable to receive any SNMP data which is more important to me than the zabbix agent data. Has anyone had this problem before? Zabbix Server OS: CentOS5.4 Zabbix Server Build: 1.8.2 from source Zabbix Proxy OS: CentOS5.4 Zabbix Proxy Build: 1.8.2 from source P.S. The SQLite database on the zabbix proxy never gets any data written to it, it is identical to when I created it from the blank schema in zabbix-1.8.2/create/schema. (Yes I've checked the permissions)

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• Cacti not working for SNMP data sources

  - by lorenzo-s

  I installed packages cacti and snmpd on a Debian server. I'm able to display common graphs in Cacti (such as memory usage, load average, logged in users, etc) using the data templates listed as Unix. Now I want to replace these graphs with new ones using SNMP data sources, because I see there is also CPU usage and because it's not excluded I have to manage multiple hosts in the future. So, I installed snmpd on the machine and left the snmpd.conf as it is. In Cacti, I created three new data sources from SNMP templates for 127.0.0.1 host: ucd/net - CPU Usage - Nice ucd/net - CPU Usage - System ucd/net - CPU Usage - User Then I created a new graph from template ucd/net - CPU Usage, and select the three data sources in the Graph Item Fields section. Graph is now enabled and running, but empty. No data have been collected. Under Console - Devices my SNMP host is listed as up and running: System:Linux ip-xx-xx-xxx-xxx 3.2.0-23-virtual #36-Ubuntu SMP Tue Apr 10 22:29:03 UTC 2012 x86_64 Uptime: 929267 (0 days, 2 hours, 34 minutes) Hostname: ip-xx-xx-xxx-xxx Location: Sitting on the Dock of the Bay Contact: Me [email protected] In SNMP Options I left all as it is: SNMP Version: Version 1 SNMP Community: public SNMP Timeout: 500 ms Maximum OID's Per Get Request: 10 In Console - Utilities - Cacti Log I have multiple warning (two for each data source) every 5 minutes: 10/29/2012 01:45:01 PM - CMDPHP: Poller[0] Host[2] DS[18] WARNING: Result from SNMP not valid. Partial Result: U 10/29/2012 01:45:01 PM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'127.0.0.1', and OID:'.1.3.6.1.4.1.2021.4.15.0' 10/29/2012 01:45:01 PM - CMDPHP: Poller[0] Host[1] DS[9] WARNING: Result from SNMP not valid. Partial Result: U 10/29/2012 01:45:01 PM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'127.0.0.1', and OID:'.1.3.6.1.4.1.2021.11.52.0' 10/29/2012 01:40:01 PM - CMDPHP: Poller[0] Host[2] DS[19] WARNING: Result from SNMP not valid. Partial Result: U 10/29/2012 01:40:01 PM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'127.0.0.1', and OID:'.1.3.6.1.4.1.2021.4.6.0' [...] I have the feeling I'm missing something, but I cannot get it...

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