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• Hard drives (SATA/ATA) corrupting

  - by JC Denton

  Hello All, 2 years ago I bought relatives a new computer for christmas and installed Ubuntu on it. Ever since then it has been experiencing problems with the hard drives. The hard drive supplied with the machine was a SATA drive. When it appeared it was having problems (files and folders with invalid encoding started appearing) I replaced the SATA drive with the drive of their previous computer. I replaced it (The replacement) later on, the drive being rather old and thus becoming more prone to the risk of failure. The replacement drive is a IDE drive but the same problems started to appear (files and folders showing up in nautilus with invalid encoding). I fear the files and folders that are showing are existing FS entries, starting to corrupt. As it's happening to both the IDE and SATA drive it's unlikely to be the drives themselves or the IDE/SATA controller, I believe. Any ideas as to what could be causing the (assumed) corruption? EDIT: You're right about the paragraphs. They were there in edit mode but I'm still getting to grips with the whitespace format codes. The system is a "Primo Pro" AMD Phenom II X4 Quad Core 920 2.80GHz SILENT DDR2, ordered from overclockers.co.uk and nothing has been added to it except for the replacement of the SATA drive with an AMD drive. It would seem unlikely for a barebones system to be underpowered.

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• Upgrade Nokia Maps from v2 to v3 fails

  - by ssollinger

  I'm trying to install Nokia Maps 3.0 on my Nokia N82, without much success. I believe other similar Nokia phones have the same problem. My phone is connected through USB in "PC Suite" mode, and the latest firmware available for N82 is installed. I currently have Maps 2.0 installed. I'm installing from a Windows XP PC, and tried the update first from within Ovi Suite (latest version) and from Nokia Maps Updater (latest version). In both cases it detects that there is an update available (Maps 3.0), downlowds it and starts the install. On my phone, I then get the following error message: Unable to install. Component is built in. And on the PC I get the error Error Cannot update maps application. The installation failed or was cancelled on the phone (18). I found an entry for Maps in the App. manager and deleted it (and turned phone off and on again afterwards), but this didn't make any difference (and I don't think it changed the version of Maps installed either). This is the release version of Maps 3.0, not the beta. I found the problem mentioned many times on various web sites, but couldn't find a solution anywhere. Has anybody any ideas how to get the upgrade from Maps 2.0 to Maps 3.0 to work?

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• Windows installation repair option not showing up

  - by Jason

  I'm trying to repair an existing Windows XP installation. Following the instructions from http://www.microsoft.com/windowsxp/using/helpandsupport/learnmore/tips/doug92.mspx this should work: - 1.When the Press any key to boot from CD message is displayed on your screen, press a key to start your computer from the Windows XP CD. - 2.Press ENTER when you see the message To setup Windows XP now, and then press ENTER displayed on the Welcome to Setup screen. - 3.Do not choose the option to press R to use the Recovery Console. - 4.In the Windows XP Licensing Agreement, press F8 to agree to the license agreement. - 5.Make sure that your current installation of Windows XP is selected in the box, and then press R to repair Windows XP. - 6.Follow the instructions on the screen to complete Setup. On step 5 pressing R does nothing and there is nothing on the screen saying it would. When I just select to install I get a message that a previous installation is there and proceeding will destroy it and installed applications, I can optionally select a directory other than c:/windows, and I can optionally format before continuing. I had tried to go from SP2-SP3. It failed, and then I couldn't get to Safe Mode. I put the SP1 disk back in to do a repair, and I don't see that option. (I don't have an SP2 boot/install disk, I just have the non-boot upgrade package.)

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• CentOS OpenVZ fail to boot after kernel update

  - by SkechBoy

  After upgrading to latest OpenVZ kernel CentOS server won't boot. When i try go boot the latest kernel server is stuck at this point: (note that images are taken from virtual kvm) http://i.stack.imgur.com/4lusz.jpg Then i try to start the server on some old kernels and than i get this error message: kernel panic - not syncing - attempted to kill init better shown on this image: http://i.stack.imgur.com/2SReF.jpg Here is some useful information fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 2995.7 GB, 2995739688960 bytes 255 heads, 63 sectors/track, 364211 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0004c4e4 Device Boot Start End Blocks Id System /dev/sda1 1 523 4199044+ 82 Linux swap / Solaris /dev/sda2 524 785 2104515 83 Linux /dev/sda3 786 261869 2097157230 83 Linux /dev/sda4 261870 364211 822062115 83 Linux /etc/fstab proc /proc proc defaults 0 0 none /dev/pts devpts gid=5,mode=620 0 0 /dev/sda1 none swap sw 0 0 /dev/sda2 /boot ext3 defaults 0 0 /dev/sda3 / ext3 defaults 0 0 /dev/sda4 /home ext3 defaults 0 0 and grub config file: title OpenVZ (2.6.18-274.18.1.el5.028stab098.1) root (hd0,1) kernel /vmlinuz-2.6.18-274.18.1.el5.028stab098.1 ro root=/dev/sda3 vga=0x317 selinux=0 initrd /initrd-2.6.18-274.18.1.el5.028stab098.1.img title OpenVZ (2.6.18-274.7.1.el5.028stab095.1) root (hd0,1) kernel /vmlinuz-2.6.18-274.7.1.el5.028stab095.1 ro root=/dev/sda3 vga=0x317 selinux=0 initrd /initrd-2.6.18-274.7.1.el5.028stab095.1.img title OpenVZ (2.6.18-194.8.1.el5.028stab070.4) root (hd0,1) kernel /vmlinuz-2.6.18-194.8.1.el5.028stab070.4 ro root=/dev/sda3 vga=0x317 initrd /initrd-2.6.18-194.8.1.el5.028stab070.4.img Any help is greatly appreciated Thanks.

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• Is there any special way to force GoBack to work with Windows Vista and 7?

  - by dfree

  Norton/Roxio's GoBack doesn't work with Vista/7 for reasons unknown. I have tried several alternatives (Norton Ghost, RollbackRX, Norton Save and Restore), none of which offer the same functionality as GoBack. Not only does GoBack not eat up all your hard drive space while creating a legitimate fail safe for any pc problems, it also allows you to see ACTIVELY EXACTLY WHAT PROCESS ARE BEING EXECUTED ON YOUR COMPUTER. This feature (called Advanced Disk Drive Restore) also allows you to troubleshoot problems and determine causes for things in about half a second by seeing what is happening on your machine. It's how I learned everything I know about computers. GoBack also features something called Safe Try Mode where you can put it in SafeTry and then mess up the whole computer and when you come out of it, your computer will be exactly how it was before. Amazing for people who like to tinker without risking their machine stability. It also helps for that accidentally erased paper or whatever you may have erased. I believe GoBack installs a type44 partition around the drive, which loads prior to windows to allow this functionality. If you're going to recommend another program, please don't (unless it does all of the above). I've tried all the competition and nothing is as good. I just want my GoBack to work with 7 :) Any ideas of crazy ways to make this work?

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• X11 performance problem after upgrading from Centos3 to Centos5 with an ATI Rage XL

  - by Marcelo Santos

  After upgrading a computer from Centos3 to Centos5 an application that does a lot of scrolling took a very high performance hit. top tells me that X is using a lot of CPU and that was not happening before. The machine has an ATI Rage XL with 8MB and X is using the ati driver as there is no proprietary ATI driver for this board on linux. The xorg.conf: Section "Device" Identifier "Videocard0" Driver "ati" EndSection Section "Screen" Identifier "Screen0" Device "Videocard0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 Modes "1024x768" "800x600" "640x480" EndSubSection EndSection Section "DRI" Group 0 Mode 0666 EndSection A similar machine that still has Centos3 installed is able to start DRI on the X server while this one is not, this is the Xorg.0.log for the Centos5 machine: drmOpenDevice: node name is /dev/dri/card0 drmOpenDevice: open result is -1, (No such device or address) drmOpenDevice: open result is -1, (No such device or address) drmOpenDevice: Open failed drmOpenDevice: node name is /dev/dri/card0 drmOpenDevice: open result is -1, (No such device or address) drmOpenDevice: open result is -1, (No such device or address) drmOpenDevice: Open failed [drm] failed to load kernel module "mach64" (II) ATI(0): [drm] drmOpen failed (EE) ATI(0): [dri] DRIScreenInit Failed (II) ATI(0): Largest offscreen areas (with overlaps): (II) ATI(0): 1024 x 1279 rectangle at 0,768 (II) ATI(0): 768 x 1280 rectangle at 0,768 (II) ATI(0): Using XFree86 Acceleration Architecture (XAA) Screen to screen bit blits Solid filled rectangles 8x8 mono pattern filled rectangles Indirect CPU to Screen color expansion Solid Lines Offscreen Pixmaps Setting up tile and stipple cache: 32 128x128 slots 10 256x256 slots (==) ATI(0): Backing store disabled (==) ATI(0): Silken mouse enabled (II) ATI(0): Direct rendering disabled (==) RandR enabled I also tried using EXA instead of XAA and setting: Option "AccelMethod" "XAA" Option "XAANoOffscreenPixmaps" "true" uname -a Linux sir5.erg.inpe.br 2.6.18-128.7.1.el5 #1 SMP Mon Aug 24 08:20:55 EDT 2009 i686 i686 i386 GNU/Linux rpm -qa | grep xorg-x11-server xorg-x11-server-utils-7.1-4.fc6 xorg-x11-server-sdk-1.1.1-48.52.el5 xorg-x11-server-Xvfb-1.1.1-48.52.el5 xorg-x11-server-Xnest-1.1.1-48.52.el5 xorg-x11-server-Xorg-1.1.1-48.52.el5 The drmOpenDevice error continues when using the suggested Option "AIGLX" "true".

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• Word 2013 can't compare readonly files

  - by Moshe Katz

  I am using Tortoise SVN to work with a repository that contains some documentation saved as Word documents. On my old computer, with Office 2010, I was able to compare with previous revisions. Tortoise would open Word in compare view so I could see the differences between the files. I have installed Office 2013 (final version from Technet, not the preview version) on my new laptop for testing and now I can no longer compare Word Documents. Tortoise pops up a generic error that it was unable to compare the two files. Tortoise uses a JScript file to interface with Word, so I ran that file through a debugger and found that the actual error is: The Compare method or property is not available because this command is not available for reading. Some Googling followed by some testing revealed that the error is caused by the first file opened (in this case, the previous version) being opened as Read-Only. If I change the JScript code to open in normal mode, and I find the file on the system and un-check the "Read Only" property (if necessary), then the comparison opens as expected. I was unable to find any documentation about this change to Word on any Microsoft site. Does anyone know why this has been changed, and if it is intentional and not a bug, what the benefit is of requiring the file to be writable in order to compare it with another? Note: This is tagged word-2013-preview but it is actually for the release version of Word that is available on MSDN and Technet. I do not have enough rep. on this site to create new tags (yet).

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• Dante (SOCKS server) not working

  - by gregmac

  I'm trying to set up a SOCKS proxy using dante for testing purposes. However, I can't even get it to work with a web browser, after looking at several tutorials on how to do that. I've tried in both IE and Firefox, in both cases, using "Manual proxy configuration", leave everything blank except for SOCKS host, and then put in the IP of my proxy and the port number (1080). I just get "Server not found" / "Problems loading this page" and don't see anything in danted, even running in debug mode. If I do a "telnet 10.0.0.40 1080" I do see the connection open in danted debug output, so I know that much is working. Here's my config: logoutput: stdout /var/log/danted/danted.log internal: eth0 port = 1080 external: eth0 method: username none #rfc931 user.privileged: proxy user.notprivileged: nobody user.libwrap: nobody connecttimeout: 30 # on a lan, this should be enough if method is "none". client pass { from: 10.0.0.0/8 port 1-65535 to: 0.0.0.0/0 } client pass { from: 127.0.0.0/8 port 1-65535 to: 0.0.0.0/0 } client block { from: 0.0.0.0/0 to: 0.0.0.0/0 log: connect error } block { from: 0.0.0.0/0 to: 127.0.0.0/8 log: connect error } pass { from: 10.0.0.0/8 to: 0.0.0.0/0 protocol: tcp udp } pass { from: 127.0.0.0/8 to: 0.0.0.0/0 protocol: tcp udp } block { from: 0.0.0.0/0 to: 0.0.0.0/0 log: connect error } I'm sure I'm probably missing something simple, but I'm lost. I haven't even thought about SOCKS since the late 90's.

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• Built local glibc, broke system, how do I ssh without parsing the .bashrc?

  - by Mikhail

  The cluster I am on had really old build tools and I needed to use CUDA5. I'm a pretty clever dude and I planned on building the necissary tools. So, I built a local copy of gcc, bintools, and glibc. Everything a CUDA5 could want. All builds finished without error. and I tested gcc and bintools. Everything was wonderful and I built and ran a few of the programs. I set up the LD_LIBRARY_PATHs in the .bashrc and logged back in, expecting a productive night ahead. To my horror I realized that everything is dynamically linked. Now I can't do simple commands like ls [ex@uid377 ~]$ ls ls: error while loading shared libraries: __vdso_time: invalid mode for dlopen(): Invalid argument and I can't do commands to fix the problem like rm or vim! Is there a way for me to ssh but also to ignore .bashrc file? Any suggestions are much appreciated. This machine is obviously under maintained and I don't know when I could have administrator support.

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• Why a 10 years old software still is so slow even today?

  - by Cawas

  I just noted this question due to a game (which happens to be Diablo 2), but the matter of fact is: why is my brand new mac book pro, made in 2009 with latest technology (tho it's the cheapest one) can't rival my computer which used to run this much faster back in 2000? Really, it was much faster on my AMD K6 450 back in those days, and I could even run two clients at same time with no slow down. I've always had the feeling this machine was slow, but this is a very odd way to attest it. Granted, the machine is smaller, runs on wifi and "boots" way faster thanks to sleep mode. But other than that, what have we evolved after all?! I'm pretty sure this shouldn't be graphical card's fault. Sure if I buy latest technology it will run fast, and probably most people here can confirm this and won't even understand my question. But the thing is, all the hardware is supposedly much faster and better than the stuff from 10 years ago. The software and operating system became more complex, but also more well refined. Now I'm trying a piece of software that is actually 10 years old and it's not getting any better results! Why?

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• Selenium server won't start

  - by moff

  I'm getting the following error when trying to start selenium: C:\Temp\selenium-server-1.0.3java -jar selenium-server.jar 22:02:07.615 INFO - Java: Sun Microsystems Inc. 16.0-b13 22:02:07.617 INFO - OS: Windows 7 6.1 x86 22:02:07.625 INFO - v2.0 [a2], with Core v2.0 [a2] 22:02:07.811 INFO - RemoteWebDriver instances should connect to: http://127.0.0. 1:4444/wd/hub 22:02:07.813 INFO - Version Jetty/5.1.x 22:02:07.815 INFO - Started HttpContext[/selenium-server/driver,/selenium-server /driver] 22:02:07.817 INFO - Started HttpContext[/selenium-server,/selenium-server] 22:02:07.818 INFO - Started HttpContext[/,/] 22:02:07.866 INFO - Started org.openqa.jetty.jetty.servlet.ServletHandler@2bbd86 22:02:07.867 INFO - Started HttpContext[/wd,/wd] 22:02:07.870 WARN - Failed to start: [email protected]:4444 Exception in thread "main" org.openqa.jetty.util.MultiException[java.net.SocketE xception: Unrecognized Windows Sockets error: 0: JVM_Bind] at org.openqa.jetty.http.HttpServer.doStart(HttpServer.java:686) at org.openqa.jetty.util.Container.start(Container.java:72) at org.openqa.selenium.server.SeleniumServer.start(SeleniumServer.java:3 96) at org.openqa.selenium.server.SeleniumServer.boot(SeleniumServer.java:23 4) at org.openqa.selenium.server.SeleniumServer.main(SeleniumServer.java:19 8) java.net.SocketException: Unrecognized Windows Sockets error: 0: JVM_Bind at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.PlainSocketImpl.bind(Unknown Source) at java.net.ServerSocket.bind(Unknown Source) at java.net.ServerSocket.(Unknown Source) at org.openqa.jetty.util.ThreadedServer.newServerSocket(ThreadedServer.j ava:391) at org.openqa.jetty.util.ThreadedServer.open(ThreadedServer.java:477) at org.openqa.jetty.util.ThreadedServer.start(ThreadedServer.java:503) at org.openqa.jetty.http.SocketListener.start(SocketListener.java:204) at org.openqa.jetty.http.HttpServer.doStart(HttpServer.java:716) at org.openqa.jetty.util.Container.start(Container.java:72) at org.openqa.selenium.server.SeleniumServer.start(SeleniumServer.java:3 96) at org.openqa.selenium.server.SeleniumServer.boot(SeleniumServer.java:23 4) at org.openqa.selenium.server.SeleniumServer.main(SeleniumServer.java:19 8) Java is installed: C:\Temp\selenium-server-1.0.3java -version java version "1.6.0_18" Java(TM) SE Runtime Environment (build 1.6.0_18-b07) Java HotSpot(TM) Client VM (build 16.0-b13, mixed mode, sharing) Thanks in advance

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• Nginx + PHP5-FPM repeated cut outs 502

  - by James

  I've seen a number of questions here that highlight random 502 (Nginx + PHP-FPM = "Random" 502 Bad Gateway) and similar time outs when using Nginx + PHP-FPM. Even with all the questions, I'm still unable to find a solution. Using Ubuntu 10.10 + Nginx + PHP5-FPM + APC and every 1 out of 4 requests ends in a timeout and failure. This isn't a load issue or large traffic, it happens even in dev environment with one person. I am doing this across 3 1GB machines, each with the same configurations and same problems. fastcgi_params fastcgi_param QUERY_STRING $query_string; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_param SCRIPT_NAME $fastcgi_script_name; fastcgi_param REQUEST_URI $request_uri; fastcgi_param DOCUMENT_URI $document_uri; fastcgi_param DOCUMENT_ROOT $document_root; fastcgi_param SERVER_PROTOCOL $server_protocol; fastcgi_param GATEWAY_INTERFACE CGI/1.1; fastcgi_param SERVER_SOFTWARE nginx/$nginx_version; fastcgi_param REMOTE_ADDR $remote_addr; fastcgi_param REMOTE_PORT $remote_port; fastcgi_param SERVER_ADDR $server_addr; fastcgi_param SERVER_PORT $server_port; fastcgi_param SERVER_NAME $server_name; fastcgi_param REDIRECT_STATUS 200; /etc/php5/fpm/main.conf ; FPM Configuration ; ;include=/etc/php5/fpm/*.conf ; Global Options ; pid = /var/run/php5-fpm.pid error_log = /var/log/php5-fpm.log ;log_level = notice ;emergency_restart_threshold = 0 ;emergency_restart_interval = 0 ;process_control_timeout = 0 ;daemonize = yes ; Pool Definitions ; include=/etc/php5/fpm/pool.d/*.conf /etc/php5/fpm/pool.d/www.conf [www] listen = 127.0.0.1:9000 ;listen.backlog = -1 ;listen.allowed_clients = 127.0.0.1 ;listen.owner = www-data ;listen.group = www-data ;listen.mode = 0666 user = www-data group = www-data ;pm.max_children = 50 pm.max_children = 15 ;pm.start_servers = 20 pm.min_spare_servers = 5 ;pm.max_spare_servers = 35 pm.max_spare_servers = 10 ;pm.max_requests = 500 ;pm.status_path = /status ;ping.path = /ping ;ping.response = pong request_terminate_timeout = 30 ;request_slowlog_timeout = 0 ;slowlog = /var/log/php-fpm.log.slow ;rlimit_files = 1024 ;rlimit_core = 0 ;chroot = chdir = /var/www ;catch_workers_output = yes

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• Authenticated User Impersonation in Classic ASP under IIS7

  - by user52663

  I've recently moved one of our servers from Server 2003 and IIS6 to Server 2008 R2 and IIS7 (technically IIS7.5 I suppose). In doing so I am transitioning a small account management tool written in classic ASP and have run into a problem with user impersonation. Extensive searching hasn't been much help so far. Under IIS6, the site was configured to impersonate the logged-in user. Thus, if a domain admin logged in, he was able to run commands to create user directories, adjust permissions, etc. Using Procmon you can see the processes executing as that user. This worked fine. However, with the same code under IIS7, I am unable to get this behavior. I have enabled Basic Authentication, disabled Anonymous Auth, enabled impersonation and have changed the app pool to classic instead of integrated pipelining. Everything seems to be configured correctly, however, all the processes launched by the classic ASP site continue to run as the default AppPool identity and not the logged-in user. If it matters, programs are being launched with code such as: set Wsh = Server.CreateObject("WScript.Shell") Wsh.Run("cmd.exe /C mkdir D:\users\foo") Monitoring via Procmon shows cmd.exe being run as either "Classic .NET AppPool" or "DefaultAppPool" depending on the pipeline mode. Any suggestions on how to get the classic ASP site to impersonate and execute as the authenticated user would be great. Thanks!

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• How to use the AWUS036H on MacBook Pro with Lion and Backtrack in VM?

  - by Swader

  I have the AWUS036H USB WiFi adapter and have recently upgraded the OSX to Lion. The thing is, there are no drivers for Lion for the AWUS036H, and I would have to boot into 32bit mode every time I want to launch the adapter as per instructions here: http://www.youtube.com/watch?v=n9_HAGi1ce0 I also want to install BackTrack as I deal in networks a lot for my company. While this would be a simple matter on any other laptop, the company issued Macbook does not allow booting into any OS other than MacOSX or Windows with Bootcamp. Now, since dual booting into BT is not an option, I would like Backtrack to run in VM inside my MacOSX Lion - and this it does. It works like a charm inside VirtualBox. But since there are no 64bit drivers for the wifi adapter, Lion doesn't recognize it and cannot install it. This, in turn, means that Backtrack cannot see it even though AWUS036H usually works flawlessly with BT. How can I make my VM-based BT see the wifi adapter even if the parent OS doesn't see it, if at all? Is there a way, or am I better off buying a new WiFi adapter that supports OSX 10.7 such as the AWUS036NHR?

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• Android failure to boot on LG [migrated]

  - by Ukavi

  I need to recover data from my AT&T LG Thrill Android Phone Background: My AT&T LG Thrill phone's battery died a couple of days ago because I forgot to charge it. When I charged the phone and tried to turn it on, it showed the LG logo followed by the dropping balls and the AT&T "Rethink Possible" screen. I then get a mesage that the Application Google Services Framework has crashed and the phone goes into a loop with the dropping balls showing again followed by "Rethink Possible" screen. This sequence repeats itself over and over and the phone does not get out of this loop. I have been able to go into the recovery screen (both Safe Mode and the Android Recovery Service) and have cleared cache, etc. However, I DO NOT want to wipe user data and restore to factory settings as this will wipe all of my data (pictures, application data, etc). Solution Needed: I need a suggestion to a way of accessing my data so that I can back it up onto an SD card/computer. I DO NOT want to root the phone as this may void the warranty. What I'm looking for is a way of perhaps putting the original flash image on the micro SD card and then have the phone read that image. Or some other similar solution that will get the phone out of this loop and allow me to get to the data.

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• How to create btrfs RAID-1 filesystem (assertion error in mkfs.btrfs)?

  - by amcnabb

  I tried to make a btrfs RAID-1 filesystem in "degraded mode" by following the btrfs UseCases instructions but hit a fatal assertion error. Why is this failing, and is there any workaround? The instructions I followed are at: https://btrfs.wiki.kernel.org/articles/u/s/e/UseCases_8bd8.html The output of the mkfs.btrfs and btrfs filesystem show commands is: # mkfs.btrfs -m raid1 -d raid1 /dev/sdd1 /dev/loop1 WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL WARNING! - see http://btrfs.wiki.kernel.org before using failed to read /dev/sr0 adding device /dev/loop1 id 2 mkfs.btrfs: volumes.c:802: btrfs_alloc_chunk: Assertion `!(ret)' failed. zsh: abort (core dumped) mkfs.btrfs -m raid1 -d raid1 /dev/sdd1 /dev/loop1 # btrfs filesystem show failed to read /dev/sr0 Label: none uuid: 773908b8-acca-4c30-85c5-6642b06de22b Total devices 1 FS bytes used 28.00KB devid 1 size 223.13GB used 2.04GB path /dev/sda5 Label: none uuid: 0f06f1a8-5f5f-4b92-a55c-b827bcbcc840 Total devices 2 FS bytes used 24.00KB devid 2 size 2.00GB used 0.00 path /dev/loop1 devid 1 size 1.36TB used 20.00MB path /dev/sdd1 Btrfs Btrfs v0.19 # EDIT: It turns out that the filesystem isn't mountable: # mount /dev/sdd1 /mnt/big2 mount: wrong fs type, bad option, bad superblock on /dev/sdd1, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so # So, why did the mkfs fail, and is there any workaround?

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• Best way to 'harden' embedded ext4 file server against unexpected loss of power?

  - by Jeremy Friesner

  Hi all, First, a little background: my company makes an audio streaming device that is a headless, rack-mounted Linux box with a couple of SSDs attached. Each SSD is formatted with ext4. The users can connect to the system using Samba/CIFS to upload new audio files or access existing ones. There is also custom software for streaming out audio over the network. This is all fine. The only problem is that the users are audio people, not computer people, and see the system as a 'black box', not as a computer. Which means that at the end of the day, they aren't going to ssh in to the box and enter "/sbin/shutdown -h"; they are just going to cut power to the rack and leave, and expect things to still work properly the next day. Since ext4 has journalling, journal checksumming, etc, this mostly works. The only time it doesn't work is when someone uploads a new file via Samba and then cuts power to the system before the uploaded data has been fully flushed to the disk. In that case, they come in the next day and find that their new file has been truncated or is missing entirely, and are unhappy. My question is, what is the best way to avoid this problem? Is there a way to get smbd to call "sync" at the end of every upload? (Performance on uploads isn't so important, since they only happen occasionally). Or is there a way to tell ext4 to automatically flush within a few seconds of any change to a file? (Again, performance can be sacrificed for safety here) Should I set a particular write-ordering mode, activate barriers, etc?

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• Getting 502 instead of 503 when all backend servers are down running HAProxy behind Apache

  - by scarba05

  I'm testing running HAProxy as a dedicated load balancer behind Apache 2.2, replacing our current configuration where we use Apache's load balancer. In our current, Apache only, set-up if all the backend (origin) servers are down Apache will serve a 503 service unavailable message. With HAProxy I get a 502 bad gateway response. I'm using a simple reverse proxy rewrite rule in Apache RewriteRule ^/(.*) http://127.0.0.1:8000/$1 [last,proxy] In HAProxy I have the following (running in default tcp mode) defaults log global option tcp-smart-accept timeout connect 7s timeout client 60s timeout queue 120s timeout server 60s listen my_server 127.0.0.1:8000 balance leastconn server backend1 127.0.0.1:8001 check observe layer4 maxconn 2 server backend1 127.0.0.1:8001 check observe layer4 maxconn 2 Testing connecting directly to the load balancer when the backend servers are down: [root@dev ~]# wget http://127.0.0.1:8000/ test.html --2012-05-28 11:45:28-- http://127.0.0.1:8000/ Connecting to 127.0.0.1:8000... connected. HTTP request sent, awaiting response... No data received. So presumably this is down to the fact that HAProxy accepts the connection and then closes it.

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• Struggling to set-up NLB cluster

  - by Chris W

  I'm trying to set up NLB on a couple of Windows 2008 R2 virtual servers running on top of Hyper V R2. The servers each have a single vNIC for LAN access (and a second vNIC for SAN access). I'm setting up the cluster to use Multicast mode. The vNICs are each set to allow MAC spoofing. Essentially I'm finding that i can add SERVER1 as a host and it will pick up and respond to the cluster IP from a remote subnet. If I then 'stop' the node in NLB manager it still responds when I would expect it to stop answering on that IP. If I recreate the cluster and add SERVER2 as the first host, the wizard completes correctly and an IPCONFIG on the server shows that it now has the cluster IP but I can't ping the cluster IP from a remote subnet but I can from another machine on the same subnet. As a final test - with both servers in the cluster, pinging from another machine on the same subnet I still get a response from the cluster IP when both nodes are stopped according to the NLB manager. The two VMs are sat on the same physical blade and are built up exactly the same as they'll be used as SharePoint web front end servers. I'm at a loss as to what could be wrong with the second VM that prevents it taking on the address just as the sole node in the cluster, never mind the strange behaviour of the cluster when I stop/start nodes.

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• OpenSwan (IPSEC) on Fedora 13 with Snow Leopard as a client

  - by sicn

  I recently installed OpenSwan on my Fedora 13 machine. I want to use it to connect with Mac OS X with L2TP over IPSEC, unfortunately I am already stuck on the IPSEC-negotation part. My server is running behind a NATted firewall so my external IP differs from the server's IP. The server has a fixed IP on the network and the same is almost always valid for the clients (they are usually behind a NATted firewall). I installed OpenSwan on Fedora 13 and have following configuration: config setup protostack=netkey nat_traversal=yes virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12 oe=off nhelpers=0 conn L2TP-PSK-NAT rightsubnet=vhost:%priv also=L2TP-PSK-noNAT conn L2TP-PSK-noNAT authby=secret pfs=no auto=add keyingtries=3 rekey=no ikelifetime=8h keylife=1h type=transport left=my.servers.external.ip leftprotoport=17/1701 right=%any rightprotoport=17/0 IPSEC starts fine and listens to UDP 500 and 4500. These two ports are opened in the firewall and are forwarded fine to the server. In my /etc/ipsec.secrets file I have my.servers.external.ip %any: "LongAndDifficultPassword" And finally in my sysctl.conf (the redirect-entries are there because OpenSwan was strongly protesting about send/accept_redirects being active) I have net.ipv4.ip_forward = 1 net.ipv4.conf.all.send_redirects = 0 net.ipv4.conf.all.accept_redirects = 0 Running "ipsec verify" gives me "all greens" (except Opportunistic Encryption Support, which is DISABLED), however, when trying to connect my Mac gives me following in the logs: Nov 1 19:30:28 macbook pppd[4904]: pppd 2.4.2 (Apple version 412.3) started by user, uid 1011 Nov 1 19:30:28 macbook pppd[4904]: L2TP connecting to server 'my.servers.ip.address' (my.servers.ip.address)... Nov 1 19:30:28 macbook pppd[4904]: IPSec connection started Nov 1 19:30:28 macbook racoon[4905]: Connecting. Nov 1 19:30:28 macbook racoon[4905]: IKE Packet: transmit success. (Initiator, Main-Mode message 1). Nov 1 19:30:31 macbook racoon[4905]: IKE Packet: transmit success. (Phase1 Retransmit). Nov 1 19:30:38: --- last message repeated 2 times --- Nov 1 19:30:38 macbook pppd[4904]: IPSec connection failed Any ideas at all?

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• Can't make Dovecot communicate with Postfix using SASL (warning: SASL: Connect to private/auth failed: No such file or directory)

  - by Fred Rocha

  Solved. I will leave this as a reference to other people, as I have seen this error reported often enough on line. I had to change the path smtpd_sasl_path = private/auth in my /etc/postfix/main.cf to relative, instead of absolute. This is because in Debian Postfix runs chrooted (and how does this affect the path structure?! Anyone?) -- I am trying to get Dovecot to communicate with Postfix for SMTP support via SASL. the master plan is to be able to host multiple e-mail accounts on my (Debian Lenny 64 bits) server, using virtual users. Whenever I test my current configuration, by running telnet server-IP smtp I get the following error on mail.log warning: SASL: Connect to /var/spool/postfix/private/auth failed: No such file or directory Now, Dovecot is supposed to create the auth socket file, yet it doesn't. I have given the right privileges to the directory private, and even tried creating a auth file manually. The output of postconf -a is cyrus dovecot Am I correct in assuming from this that the package was compiled with SASL support? My dovecot.conf also holds client { path = /var/spool/postfix/private/auth mode = 0660 user = postfix group = postfix } I have tried every solution out there, and am pretty much desperate after a full day of struggling with the issue. Can anybody help me, pretty please?

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• The RTL8111/8168B NIC under Linux and the r8168 driver

  - by nik

  So I've got one of the infamous R8168 Realtek ethernet NIC, which have some problems under Linux. After some research, I found out I had to use the r8168 driver for this card (and not the r8169 which still loads when nothing else is available), which I did. So now everything works fine... Sort of. My download and upload rates are more than halved compared to what I should get. When I test (with eg. speedtest) I get something like 20M (often 15M) in download and 30M in upload, but if I test under Windows (everything is otherwise identical: same ethernet cable, same connection, at the same time of the day (well 5 min apart)...), I get 50M upload/download (which is what I expect). Where can it come from? Here's some info: ~ # lspci [...] 06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) ~ # modinfo r8168 filename: /lib/modules/3.2.1-gentoo-r2/net/r8168.ko version: 8.027.00-NAPI license: GPL description: RealTek RTL-8168 Gigabit Ethernet driver author: Realtek and the Linux r8168 crew <[email protected]> srcversion: 0A6E9F1D4E8E51DE4B6BEE3 alias: pci:v00001186d00004300sv00001186sd00004B10bc*sc*i* alias: pci:v000010ECd00008168sv*sd*bc*sc*i* depends: vermagic: 3.2.1-gentoo-r2 SMP mod_unload [...] ~ # mii-tool -v eth0: negotiated 100baseTx-HD, link ok product info: vendor 00:07:32, model 17 rev 4 basic mode: autonegotiation enabled basic status: autonegotiation complete, link ok capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD advertising: 100baseTx-HD 10baseT-FD 10baseT-HD flow-control link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

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• 2000 Server, User can't logon

  - by Mike I

  I hope you can help me. I recently upgraded a workstation at my office (to a whole new machine) and ran into a pretty serious problem. Friday until 5:00 PM, I could access my mail on 2000 Exchange server. When I shut the old workstation down and put in the new workstation, I tried to set up an account. When I put the server name in appropriate field and typed my username and hit check names, my username does not come up. So to troubleshoot, (It also is a SMB server) I try to logon to my file share. (My local credentials are the same as server credientials of user account) When I try to logon to share, I just get the Username/Password screen (Never had gotten that before since credentials are the same) Again, in troubleshooting mode, I try to log on to my user from another workstation. Still can't authenticate via my user. Every other user can authenticate and load up their shares/mailboxes. I have restored Exchange from the backup as of 3 days ago (Thursday) but the exact same issue is still there. I really do not understand what is wrong and what else I can do to troubleshoot. If anyone has some pointers for me, I will surely accept them. Thanks, Mike

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• Cannot connect to FTP sites anymore

  - by Wayne M

  I have the FTP service running on Server 2003, and I am hosting websites through Apache. I have users configured to point to certain directories on the server. I am using FileZilla to remote FTP, but it never seems to connect to the directory. The command window says: Command: USER wayne Response: 331 Password required for wayne Command: PASS: ***** Response: 230 User wayne logged in Status: Connected Status: Retrieving directory isting... Command: PWD Response: 257 "/wayne" is current directory Command: TYPE I Response: 200 Type set to I. Command: PASV And that's it. It doesn't display any directories at all, and the pane says "Not connected to any server". Sometimes it will display the folder, but nothing happens when I click on it to expand it. It was working fine, and I have another FTP server set up the same way that does work. How can I fix this? EDIT: I've tried changing it to Active FTP, and it says: Command: LIST Command: 150 Opening BINARY mode data connection for /bin/ls Response: 425 Can't open data connection. Error: Failed to retrieve directory listing. I also noticed that I'm not able to browse the site in IIS's management console anymore, it just shows a blank screen when I click on one of the names and says There are no items to show in this view, although the name has permissions to view the folder and everything. Could it be because I have the Web Publishing service disabled (as I'm not using IIS to host websites)? That shouldn't cause anything should it?

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• Sharing files between 2 different routers

  - by Chris

  I realize this has been asked before and I have read as much as I could find on the topic but I still need help with this because there are so many different approaches and the ones I am trying aren't working. So I have 2 routers, lets call them A and B. Both have a wireless feature and are active. A is in the basement and receives the internet. There is a TV on the ground floor that is connected to A through an ethernet wire. B is upstairs and gets the internet from A through an ethernet wire. Connected to B, is a desktop running Plex Media Server. What I want to do is make sure devices connected to both routes can access the Plex Media Server. So what I have read is that I should plug in the ethernet wire connecting B to a into a LAN port instead of the WAN port. After that I should turn off DHCP. I have tried this and B stops receiving internet. What am I doing wrong? Another thing I have read is to use Router B in bridge mode but Router B is running openwrt and I have QoS on it so gaming/VoIP/browsing is unaffected by heavy downloading/uploading. I would prefer to keep this active. I realize it might be ineffective if a device in Router A is doing some hardcore downloading but all that stuff is done on Router B anyway so it doesn't matter. Router A can't get openwrt because it is a shitty one provided by Bell. So, how do I proceed with this?

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