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• tod to avi mpg wmv, convert tod (.mpeg-2) to avi mpg wmv for Movie Maker.

  - by yearofhao

  Need to convert .tod (mpeg-2) to avi mpg wmv download from JVC Everio to PC with tod to avi mpg wmv converter convert tod to uncompressed/raw avi, mpg wmv Have a JVC Everio camcorder? Then you may encounter problems when saving the .tod files to your computer windows movie maker says it can't recognize and edit them to make videos. You may play them using media player but the problem is how to edit them? The bundled software Power cinema could be annoying, since you can only edit when the camera is plugged in to the PC - Power cinema can’t seem to edit from the saved clips alone. So, how do you save them to PC so that you can edit them without the camera and also using windows movie maker? JVC Everio Tod to avi mpg wmv converter costs you a penny to but help you perfectly convert tod file to AVI, MPG, WMV, YouTube FLV, MP4, DV, QuickTime.MOV or other common video formats with fast speed and while keeping the original HD quality. High definition TOD recordings from JVC Camcorders can playback fluidly, convert smoothly and edit professionally on with iOrgsoft TOD file converter iOrgsoft tod to avi mpg wmv Converter has been mostly used by Windows users who use Windows 7 or Vista, after the .tod (mpeg-2 the same codec) downloaded from JVC Everio to PC, it’s best to convert tod to avi, convert to xvid divx, convert tod to uncompressed avi or convert tod to raw avi, tod to mpg, tod to wmv, which are three Windows movie maker best formats to import. TOD to avi mpg wmv converter is a competent video-editing program that allows you to clip/cut TOD video clip, crop the video to encode, and help transfers video to devices like iPhone, iPod, to HDTV connected with Apple TV.

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• AMD switchable graphics are not working OR I don't know how to make them work

  - by Deus Deceit

  I don't know if this is the right place for this question, but I'll give it a shot. I have a Dell Inspiron 17R 5721. It's supposed to be using switchable graphics. It has an Intel HD 4000 and a Radeon HD 8730M and I'm using windows 8. My problem is this, I Installed the drivers that dell gives me but I don't see the AMD graphics card ANYWHERE ( I do see it in device manager but not anywhere else to select and play a game using AMD). I installed the latest drivers from AMD and same thing, I can't run a game with AMD graphics card. I change the applications preferences in the Catalyst control center but even after that, games don't give me the option to select the AMD card, they list only the Intel HD 4000. Can someone tell me what I have to do to make this work? ------------------- After looking around and messing with stuff. I think.... I THINK that you don't really get the option to select a graphics card. Switchable graphics is all about switching automatically depending on application's needs. Cause when I uninstalled AMD's drivers or actually (screwed up lol) games were playing much worse. When I re-installed them, games went back to being good looking. So even if a game sees only the Intel HD 4000 graphics card windows or AMD's drivers will switch to the AMD Readeon graphics card automatically. I hope someone can verify this. Cause seriously I don't think you get to play scyrim with High graphics settings or even ultra with the Intel HD Graphics card. -------------------

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• Load balanced IIS. Should I use NLB, or linux-based reverse proxy, or something else?

  - by growse

  What would be the best approach for load-balancing at least 2-3 Windows 2008 R2 IIS webservers running a multitude of .NET applications? My choices appear to be: 1) Hardware-based network device load balancer, like a Cisco CSS 2) Windows NLB 3) Some sort of linux based proxy, either haproxy or other The three servers sit as VMs on a vSphere farm, so I have the ability to clone to up the instance count in times of high load. I control the switch that the vSphere hosts are plugged into (Cisco 3750), but don't control the switching/routing infrastructure beyond that to the clients. (1) Is too expensive, and probably overkill for my needs. I've included this in case someone figures out a cunning way to do it on my existing network kit, which I doubt. (2) would seem to be the obvious "built-in" option, but seems to be quite fiddly messing around with network interfaces, multicast, and generally other things that seem to be needlessly complex. It's also fairly stupid, in that it can't remove hosts from the pool if they start throwing 500 errors or otherwise go wrong (3) is the most interesting option, as it would appear to offer the most flexibility and customizability, but without having to mess around with the network. However, while I'm familiar with the reverse-proxy capabilities of lighttpd etc, I'm not that well read on other options like HAProxy, which might be able to offer a lot more. Which would you go for, and is there anything I've not thought of?

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• Can MS Services for Unix be deployed and accessed from a shared drive?

  - by Ian C.

  I'm interested in experimenting with replacing our dependency on MKS with MS' Sevices for Unix toolset. I was wondering if anyone has any experience with deploying SFU on a shared drive? We like to, wherever possible, host our dev tools on one central NAS and call to the NAS to access the tools instead of rolling stuff out to each and every desktop. I'm not interested in the NFS support or ActiveState Perl. Really, none of the daemon technology is required here. I'm looking for replacements for the coreutils/binutils stuff you find in Linux (and MKS on Windows): sed, awk, csh, bash, grep, ls, find -- the meat-and-potates command line apps that our build and test scripts are built around. If I limit the install to just the Interix GNU Components (and maybe the Remote Connectivity components) will is run nicely from a shared location? To head off some questions: Yes, I've looked at Cygwin. Unfortunately it's performance in our build and test environment is poor. It runs considerably slower than MKS and it's not a direct drop-in replacement for MKS (thanks to its internal pathing and limitations with commands like 'ps'), so it's a tougher sell. Yes, I'm looking at the MinGW offering in parallel to this.

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• No headphone or speakers plugged in - Windows 7 issue

  - by Amit Ranjan

  I am facing a wierd issue between my sound card driver and Windows7(any edition). I have a sony vaio notebook (VPCEB24EN). Two days ago, on start I got diabled wifi, charging and speakers. Then I restart the PC and everthing worked fine. Later on I again restarted my machine, and then I found the my speakers were not working. I thought, restart will work. I restarted many more times but it did'nt work. I searched google and found that , it might be due to : 1. Hardware is not switched on from bios. 2. No hardware. 3. overriding 64-bit drivers with 32-bit drivers. To make it working, I restored my laptop from scratched, but while restoring pc, the realtek HD drivers, it gave me an error 505. I then formatted the drive and installed Win7 Ultimate 32bit (With PC was, Win7 64-bit Home Basic). I got lots of yellow exclamation in device manager, thinking now this will resolve my issue. But Even after the installing all drivers on a fresh installation, I was still with the same position. A red cross on speaker- No Speakers or Headphone plugged in. Please Note: My Laptop is Vaio , E Series, VPCEB24EN. Audio : Intel® High Definition Audio compatible but accepts Realted Audio. While using BIOS Agent, I got Intel Chipset 5 Series Audio Adapter and ATI RV370 Audio adapter found on my board. Installed is Win7 32bit Ultimate. factory default was Win7 64-bit Home Basic Memory: RAM 3GB/ 320GB HDD Display : ATI Mobility Radeon™ HD 5145 Graphics

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• Investigating a potential CPU failure

  - by Jernej

  On a Ubuntu server that I am using for computations I have recently observed that some CPU extensive programs (GUROBI,CPLEX) often segfault. Being in correspondence with tech support of the respective programs I was suggested that it may be a hardware issue. The administrator of the server performed a detailed memtest and it turned out that the RAM modules appear to be fine. Hence I've used the tool mprime to test the CPU and the following two lines appear multiple times durring the execution of the stress tests: [Worker #4 Oct 18 18:47] FATAL ERROR: Rounding was 0.498046875, expected less than 0.4 [Worker #4 Oct 18 18:47] Hardware failure detected, consult stress.txt file. The stress.txt file in itself is not very verbose about what could be the cause of this error so I would like to ask whether anyone here happens to know what could be the cause of this issue? Is there some other test I could perform to nail the problem even further? The temperature of the system (and all cores) was fine during the entire stress test (+69.0°C (high = +80.0°C, crit = +98.0°C)) the CPU in question is a Intel Core i7-2600K CPU @ 3.40GHz and is not overclocked or modified in any way. Also what is interesting that if I run mprime to only stress the CPU all tests pass fine. The error is only triggered when I let mprime stress the CPU+RAM.

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• KVM and JBoss Java Application Server

  - by Jason

  We have a large Xen deployment running on both RHEL and CentOS and have recently started looking at KVM since this is where it looks like the future of VM's are on Linux. We can load the server and get everything running without an issue. However when we load up a new one with JBoss (4.2 Community edition, Sun JDK 6) and load a large EAR the server goes a little crazy. The %sy will jump to 80-99% and just hang for large periods of time we see a similar jump in %us on the host machine. We though at first this might be I/O as it seems to happen at start of JBoss but then would "cool down" after everything got loaded. We did some tests by extracting some large tar.gz files and using jar -xvf on the ear but could not re-create. Then we starting thinking this might be some type of memory access issues. We loaded a c-program that would generate a lot of memory activity and sure enough we saw the spikes again. Not as high mind you but we did see it jump. We then wrote a small java program to do the same thing and sure enough we saw it jump again. Any thoughts on what might be causing this? Is this just the way KVM works? As a side note we do NOT see this behavior on any other setup. Xen, VMWare and/or native iron. The system does seem a bit slower than our Xen / VMware ones.

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• Setting MSN or Yahoo! Messenger status to Invisible or Offline when idle for an hour

  - by Jian Lin

  Where, or how, do I set it up in MSN Messenger or Yahoo! Messenger to automatically switch my status to either "Invisible" or "Offline" when idle for a half hour, or an hour? I know how to set my status as "Away" or "Busy" after 10 minutes, but can't seem to find a way to set the offline status options without manual intervention. Back story As a software developer, I am very used to turning the computer on for the whole day and not turning it back off. (For example, checking email for urgent fixes, fix issue and push to web server). It's not even turned off when heading to sleep in case I might find it hard to fall asleep and come back to check on the computer. Or to have it there ready in the morning to check that everything is okay. If I'm seen as being online for 24 hours of a day, some people see me as weird. Their perception of my value decreases as I'm always there (hard to get = high value; always there = low value). Leaving it on makes everyone in my contacts list think I have nothing better to do all day than sit in front of the computer. Even though it's my job and I do admittedly spend more time online than other people. That's why I'd like to find a way to set my status as Invisible or Offline.

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• Recover NTFS data from a ZFS pool that was exposed as an iSCSI target

  - by David

  This was me being stupid and the data is by no means critical and is now a learning experience first, time saver second. I set up a 100GB iSCSI target via the bare bone instructions in napp-it. It's a volume LU. I then had my Windows 7 machine connect to the iSCSI target, formatted it to NTFS, and tested the performance of it with some large iso file transfers. I then unmapped the drive, reconnected to the target, and was forced to format to NTFS again. It was then I realized the files I had transferred only existed on the iSCSI target. I threw a little fit and then went about my business. When I was cleaning up my experiment I noticed in this screen: http://imgur.com/1xlcu.jpg That is my experimental target tank/iSCSI and it still has a lot of data in it. Assuming my isos are still in this pool how would I go about recovering them? While writing this I used GetDataBackup for NTFS from www.runtime.org. And while it found two previous NTFS partitions there was no data.

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• Free tiered storage automation in linux?

  - by NginUS

  I have a couple virtualized fileservers running in QEMU/KVM on ProxmoxVE. The physical host has 4 storage tiers with significant performance variances. They're attached both locally and via NFS. These will be provided to the fileserver(s) as local disks, abstracted into pools, and handling multiple streams of data for the network. My aim is for this abstraction layer to intelligently pool the tiers. There's a similar post on the site here: Home-brew automatic tiered storage solutions with Linux? (Memory - SSD - HDD - remote storage) in which the accepted answer was a suggestion to abandon a linux solution for NexentaStor. I like the idea of running NexentaStor. It almost fits the bill. NexentaStor provides Hybrid Storage Pools, and I love the idea of checksumming. 16TB without incurring licensing fees is a huge plus as well. After the expense of the hardware, free is about all my budget can handle. I don't know if zfs pools are adaptive or dynamically allocated based on load, but it becomes irrelevant since NexentaStor doesn't support virtio network or block drivers, which is a must in my environment. Then I saw a commercial solution called SmartMove: http://www.enigmadata.com/smartmove.html And it looks like a step in the right direction, but I'm so broke I'd be wasting their time to even ask for a quote, so I'm looking for another option. I'm after a linux implementation that supports virtio drivers, and I'm at a loss as to which software is up to it.

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• Blue screen error code 1000008e

  - by Kas

  I'm getting blue screens, mostly when trying to boot a program that required a lot of memory (games, photo editing software.) So far I've only managed to catch one set of error codes: BCCode: 1000008e BCP1: C0000005 BCP2: ADA393BA BCP3: E9BCEBC4 BCP4: 00000000 OS Version: 6_0_6002 Service Pack: 2_0 Product: 768_1 It's on a Sony VAIO Laptop VGN FW-41E, Vista OS service pack 2. Besides these codes it lists two 'temporary' files that were related with this crash: ...AppData\Local\Temp\WER-134925-0.sysdata.xml ...AppData\Local\Temp\WERDA66.tmp.version.txt When I googled these files some site said it was linked to a worm called 'yodo', but virus scans don't return any results (hitman pro, malware bytes, avast antivirus all turn up empty). Upon further searching about this yodo worm, I came across security stronghold where someone posted they had acquired this worm when downloading access and excel templates. Now, I actually did download templates for the same programs, they might have been the same, they may be related or I might be grasping at straws here. I have not noticed any issues other in performance as of late, just BSOD's when I start software that requires some memory, but I never had issues with these exact same programs before. Help and/or hints are required on how to actually figure out what's the root of this BSOD issue and how can I fix it. Do you reckon it's actually a virus? What program should be able to remove YODO worm stuff?

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• Debian: What are these files in /sys/devices/pci0000:00/ for?

  - by muhuk

  I am running Debian Squeeze on an MSI M670 laptop. I have these following files on my root drive, each 256MB: file:///sys/devices/pci0000:00/0000:00:05.0/resource1 file:///sys/devices/pci0000:00/0000:00:05.0/resource1_wc Here is my lspci output: muhuk@debian:~$ lspci 00:00.0 RAM memory: nVidia Corporation C51 Host Bridge (rev a2) 00:00.2 RAM memory: nVidia Corporation C51 Memory Controller 1 (rev a2) 00:00.3 RAM memory: nVidia Corporation C51 Memory Controller 5 (rev a2) 00:00.4 RAM memory: nVidia Corporation C51 Memory Controller 4 (rev a2) 00:00.5 RAM memory: nVidia Corporation C51 Host Bridge (rev a2) 00:00.6 RAM memory: nVidia Corporation C51 Memory Controller 3 (rev a2) 00:00.7 RAM memory: nVidia Corporation C51 Memory Controller 2 (rev a2) 00:03.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) 00:05.0 VGA compatible controller: nVidia Corporation C51 [GeForce Go 6100] (rev a2) 00:09.0 RAM memory: nVidia Corporation MCP51 Host Bridge (rev a2) 00:0a.0 ISA bridge: nVidia Corporation MCP51 LPC Bridge (rev a3) 00:0a.1 SMBus: nVidia Corporation MCP51 SMBus (rev a3) 00:0a.3 Co-processor: nVidia Corporation MCP51 PMU (rev a3) 00:0b.0 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3) 00:0b.1 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3) 00:0d.0 IDE interface: nVidia Corporation MCP51 IDE (rev a1) 00:0e.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev a1) 00:0f.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev a1) 00:10.0 PCI bridge: nVidia Corporation MCP51 PCI Bridge (rev a2) 00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2) 00:14.0 Bridge: nVidia Corporation MCP51 Ethernet Controller (rev a3) 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 04:04.0 FireWire (IEEE 1394): O2 Micro, Inc. Firewire (IEEE 1394) (rev 02) 04:04.2 SD Host controller: O2 Micro, Inc. Integrated MMC/SD Controller (rev 01) 04:04.3 Mass storage controller: O2 Micro, Inc. Integrated MS/xD Controller (rev 01) 04:09.0 Network controller: RaLink RT2561/RT61 rev B 802.11g I am speculating these have something to do with the shared RAM my GPU is using. But why a file on disk? And why two of them?

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• A star vs internet routing pathfinding

  - by alan2here

  In many respects pathfinding algorythms like A star for finding the shortest route though graphs are similar to the pathfinding on the internet when routing trafic. However the pathfinding routers perform seem to have remarkable properties. As I understand it: It's very perfromant. New nodes can be added at any time that use a free address from a finite (not tree like) address space. It's real routing, like A*, theres never any doubling back for example. IP addresses don't have to be geographicly nearby. The network reacts quickly to changes to the networks shape, for example if a line is down. Routers share information and it takes time for new IP's to be registered everywhere, but presumably every router dosn't have to store a list of all the addresses each of it's directions leads most directly to. I can't find this information elsewhere however I don't know where to look or what search tearms to use. I'm looking for a basic, general, high level description to the algorithms workings, from the point of view of an individual router.

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• How to move Mdadm RAID drive (EBS based) to different AWS Instance

  - by Stanley

  We have a media-rich web application that is hosted on AWS. We have several Web Servers and we have an NFS server. On the NFS server (Linux server) we have several EBS volumes that are mounted and we've used mdadm to implement the different mounted volumes as a single RAID volume. The Web Servers simply access the NFS storage through a mount point. Amazon has now let us know that they will be performing power maintenance on this server in a couple of days time. Since all our media is on here it would render our site unusable for the hours while Amazon is working on it. We want to try and prevent this downtime. I was thinking that we can prevent server downtime by perhaps setting up a new server temporarily and attaching the EBS drives (raid volume) to that server and have our web servers point there during maintenance. This is a very high risk operation since this involves several terabytes of our production data. What would be the safe way to move over our logical raid drive (md0) to a new amazon instance? I was hoping that I could start with building the new server, mounting the ebs volumes and assembling the RAID partition using mdadm --assemble --scan before unmounting from the existing instance so that I can first test that everything works and thus having it mounted on two instances at the same time, but I don't believe that is possible with the way that filesystems work. How do I move a Linux software RAID to a new machine? suggests a way to move drives, but isn't really a cloud-based question. Perhaps there are simpler ways to prevent system downtime with our solution being hosted on the cloud? I have considered taking an EBS snapshot, but that tries to replicate all the many terabytes of mounted storage, so this is not a practical solution. Any ideas?

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• Defrag starting when not scheduled. What is triggering the defrag

  - by leroyclark

  I have a fileserver that is starting a defrag around 2:00 PM everyday. This is killing performance as it runs for ours becuase this is a file server and has multiple drives. All scheduled tasks regarding defrag have been disabled. I have verified that it is accessing the data drives(using SysInternals tools). The reason I might have though otherwise was the event log has multiple entries regarding defragging a db file related to shadow copies. Oh yes these drives take shadow copy snapshots multiple times per day but the times of them don't coincide with the defrag task. There is nothing in the event logs regarding defrag except those noted above in relation to shadow copies. I'm out of ideas looking for what is starting these jobs. One possiblility is that the drives are not being defgramented, but being analyized to determine if they need to be defragmented. I manually ran an analysis and the cpu usage(by dfrgntfs.exe) seems to be similar to what I'm seeing everday while the defrag process is running. However I've found no setting that schedules this analysis.

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• open_basedir problems with APC and Symfony2

  - by Stephen Orr

  I'm currently setting up a shared staging environment for one of our applications, written in PHP5.3 and using the Symfony2 framework. If I only host a single instance of the application per server, everything works as it should. However, if I then deploy additional instances of the application (which may or may not share the exact same code, dependent on client customisations), I get errors like this: [Tue Nov 06 10:19:23 2012] [error] [client 127.0.0.1] PHP Warning: require(/var/www/vhosts/application1/httpdocs/vendor/doctrine-common/lib/Doctrine/Common/Annotations/AnnotationRegistry.php): failed to open stream: Operation not permitted in /var/www/vhosts/application2/httpdocs/app/bootstrap.php.cache on line 1193 [Tue Nov 06 10:19:23 2012] [error] [client 127.0.0.1] PHP Fatal error: require(): Failed opening required '/var/www/vhosts/application1/httpdocs/app/../vendor/doctrine-common/lib/Doctrine/Common/Annotations/AnnotationRegistry.php' (include_path='.:/usr/share/pear:/usr/share/php') in /var/www/vhosts/application2/httpdocs/app/bootstrap.php.cache on line 1193 Basically, the second site is trying to require the files from the first site, but due to open_basedir restrictions it can't do that. I'm not willing to disable open_basedir as that is only masking the problem instead of solving it, and creates a dependency between applications that should not be present. I initially believed this was related to a Symfony2 error, but I've now tracked it down to an issue with APC; disabling APC also solves the error, but I'm concerned about the performance impact of doing so. Does anyone have any suggestions on what I might be able to do?

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• Maximum limit of filepointer in php reached and not changeable

  - by mlaug

  I have a server with the current 5.3.x version installed. Since we are running a really simple and small server in php using sockets, that connects to a lot clients using sockets we need to raise the open file limit that has been already done on the server for the user, that runs the server #ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 29879 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 8192 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 29879 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited and we compiled php with --enable-fd-setsize=8192 still we are getting [19-Nov-2012 09:24:23 Europe/Berlin] PHP Warning: socket_select(): You MUST recompile PHP with a larger value of FD_SETSIZE. It is set to 1024, but you have descriptors numbered at least as high as 1024. --enable-fd-setsize=2048 is recommended, but you may want to set it to equal the maximum number of open files supported by your system, in order to avoid seeing this error again at a later date. once in a while in our logs. Anyone knows who to configure the unix server and php correctly to have that working? I found a bug, but that is related to 2006 and marked as "not a bug" https://bugs.php.net/bug.php?id=37025&edit=1

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• SQL Server Database In Single User Mode after Failover

  - by jlichauc

  Here is a weird situation we experienced with a SQL Server 2008 Database Mirroring Failover. We have a pair of mirrored databases running in high-availability mode and both the principal and mirror showed as synchronized. As part of some maintenance I triggered a manual failover of the principal to the mirror. However after the failover the principal was now in single-user mode instead of the expected "Principal/Synchronized" state we usually get. The database had been in multi-user mode on the previous principal before this had happened. We ended up stopping all applications, restarting the SQL Server instances, and executing "ALTER DATABASE ... SET MULTI_USER" to bring the database back to the expected "Principal/Synchronized" state in a multi-user mode. Question. Does anyone know where SQL Server stores information about whether a database should be in single-user mode or not? I'm wondering if there is some system database or table that has this setting recorded somewhere. In particular we had an incident once with the database on the original principal (the one I was failing over to) where when trying to detach the database it was put into single-user mode. I'm wondering if that setting is cached somewhere and is the reason that SQL Server put it back into single-user mode after a failover.

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• ios7 loops on the "trust this computer" dialog

  - by gcb

  trying to transfer files to the work ipad via my debian7 box. When i plug it on the computer usb port, it shows the dialog about trusting this computer, and the computer shows a gnome alert about the ipad being locked and that i should unlock it and try again. i press "trust" on the ipad and try again on gnome. and it starts again. over and over. endlessly. there are dozen threads about this on apple support forums. no solution. just dozens of "me too" flags. e.g. https://discussions.apple.com/message/23082859#23082859 (44 me-too, 2k views) here is the log/messages i get Oct 23 21:17:39 dotmatrix kernel: [ 1928.517766] usb 2-1.7: USB disconnect, device number 16 Oct 23 21:17:39 dotmatrix kernel: [ 1928.715441] usb 2-1.7: new high-speed USB device number 17 using ehci_hcd Oct 23 21:17:40 dotmatrix kernel: [ 1928.811031] usb 2-1.7: New USB device found, idVendor=05ac, idProduct=12ab Oct 23 21:17:40 dotmatrix kernel: [ 1928.811036] usb 2-1.7: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Oct 23 21:17:40 dotmatrix kernel: [ 1928.811039] usb 2-1.7: Product: iPad Oct 23 21:17:40 dotmatrix kernel: [ 1928.811041] usb 2-1.7: Manufacturer: Apple Inc. Oct 23 21:17:40 dotmatrix kernel: [ 1928.811043] usb 2-1.7: SerialNumber: fec5e0f6a6fa18a936de3c53af661051d290275e Oct 23 21:17:40 dotmatrix mtp-probe: checking bus 2, device 17: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.7" Oct 23 21:17:40 dotmatrix mtp-probe: bus: 2, device: 17 was not an MTP device Oct 23 21:17:43 dotmatrix kernel: [ 1932.346505] usb 2-1.7: USB disconnect, device number 17 If i never press the trust dialog it will stay there until i remove the cable. but the logs shows that it gave up 3sec after the cable was connected.

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• Drobo-like linux file server - how do I do it?

  - by John Hunt

  I've been pondering for a long time about how I can set up a server which operates much like the Drobo storage thing. The reasons I don't actually want a drobo is because I've heard scare stories, plus I'd like to do this on the cheap. So ideally I'm looking for something like lvm so I can create a logical volume that spans many hard disks of varying sizes... obviously that only offers redundancy if I put the LV on a raid array (as far as I know..) I have however been reading about technologies such as Microsoft's drive extender which duplicates files at the filesystem level and makes sure that the mirrored files are on a different phyiscal disk.. does anyone know or recommend a filesystem or method like this as it'll hopefully make much better use of the space available than raid ever could. Performance isn't an issue, I'd just really like to make the most of the hard disks I have lying around whilst having a bit of redundancy incase a disk dies. I understand full well that this is no replacement for a backup, but I'll only be storing files of medium importance and using the nas itself as a backup of my main pc and other systems. Thanks in advance! I'm hoping zfs or btrfs or something can do something clever for me :)

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• OC'ing a Sapphire 7950, problems with memory clock

  - by Cliff

  I bought a new rig with sapphire radeon 7950 flex w/ boost. Good scores initially in 3dmark 11, around 7300 stock. Problem is, as soon as i start overclocking, issues arise. the core clock is at 860, but rises to 925 with boost applied in pressured situations. So all the OC tools are showing 925 as base clock for some reason. Ocing the core clock has been no problem though, got up to 1200 pretty stable, but only an incremental increase in 3dmark 11, to 7600 from 7300, which is worrying. The real trouble starts when i start touching the memory clock. As soon as i touch it even by 1 point up to 1251mhz, the performance goes way down. suddenly i score under 5000 graphics in 3dmark11, no matter if its 1251hz or 1500hz. Ive tried adjusting every other parameter, different tools (sapphiretrixx, catalyst, afterburner) all still the same. Tried upping the power, still same. Where is the issue here?

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• Home Server: cpu virtualisation, what to choose?

  - by Huygens

  I'm looking for virtualisation solutions for storage and OS for a home server. A sort of private cloud where I manage the storage space independently of the VM one. This question focus on VM (or compute instance) management and what would best suit my needs. (I have another question related to the storage management). My use cases are: A backup server: rsync and other services running. A personal cloud server: a kind of owned dropbox system, à la ownCloud. " users foreseen. A media server: streaming videos and displaying photos. Here my environement and wishes: Server: HP Proliant MicroServer with 8 GB RAM (AMD Turion dual core with AMD-V technology) OS types: only Linux (perhaps a *BSD VM in the future) Linux distributions do not matter, I'm familiar with RHEL, Fedora, Suse, Ubuntu, but any other recommandation will be fine 2-3 VMs foreseen: backup server, owncloud server and media server (optional). Those are only servers, so no graphical console needed (I don't need VirtualBox) By VM I mean a virtualised environment like KVM, Xen, etc. or a compute instance like with OpenStack storage should be "virtualised/cloudified" see my other question. VM should be able to be migrated to another server in the future if performance cannot be fullfilled anymore by the current server It does not matter if installation of such setup is complicated as long as management tools allow for easy maintenance I don't have Windows at home, so solution should be Linux friendly and would be nice to be web based. But native apps are OK too. System should be easy to enhance: by adding a new server to migate some of the VMs to it. So it's really a kind of private cloud on which I could run some Linux OS. I would prefer free (libre, as in a free speach) and open source tools. But it does not have to be free as in a free beer. So Xen, KVM, VitualBox or OpenStack? What would you recommend?

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• How many reverse proxies (nginx, haproxy) is too many?

  - by Alysum

  I'm setting up a HA (high availability) cluster using nginx, haproxy & apache. I've been reading great things about nginx and haproxy. People tend to choose one or the other but I like both. Haproxy is more flexible for load balancing than nginx's simple round robin (even with the upstream-fair patch). But I'd like to keep nginx for redirecting non-https to https among other things right at the point of entry to the cluster. On the other hand, nginx is a lot faster for serving static contents and would reduce the load on the powerful apache which loves to eat a lot of RAM! Here is my planned setup: Load balancer: nginx listens on port 80/443 and proxy_forwards to haproxy on 8080 on the same server to load balance between the multiple nodes. Nodes: nginx on the node listens to requests coming from haproxy on 8080, if the content is static, serve it. But if it's a backend script (in my case PHP), proxy forward to apache2 on the same node server listenning on a different port number. Technically this setup works but my concerns are whether having the requests going through several proxies is going to slow down requests? Most of the requests will be PHP requests as the backends are services (which means groing from nginx - haproxy - nginx - apache). Thoughts? Cheers

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• NVIDIA Tesla K20C in Dell PowerEdge R720xd --- power cables

  - by CptSupermrkt

  I am trying to put an NVIDIA Tesla K20C into a Dell PowerEdge R720xd. I'm having a bit of trouble understanding the power requirements of the card. First, here is a picture of two pages of the same manual, which seems contradictory to me. One page says only a single connector is required, while the next page says both are required. The entire manual for the card can be found here: http://www.nvidia.com/content/PDF/kepler/Tesla-K20-Active-BD-06499-001-v02.pdf Here is an photo taken of the power connections on the card: And here is a photo of where those connectors need to go, onto the PCI-E riser of the r720xd: Neither the R720xd NOR the GPU came with the necessary cables. And given what appears to be a contradiction in the GPU manual (above), I'm not even sure at this point what we actually need. I have searched high and low online for things like 2x6 pin PCI-E to 8 pin male-to-male and so on, and for the life of me cannot find what we need. In case anyone needs it, the owner's manual of the R720xd can be found here: ftp://ftp.dell.com/Manuals/all-products/esuprt_ser_stor_net/esuprt_poweredge/poweredge-r720xd_Owner%27s%20Manual_en-us.pdf The relevant page is page 68, which clearly indicates that the 8-pin female port on the riser card is for a GPU. The bottom line question: exactly what power cables do we need to buy, and where can we find them?

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• What is the best way to connect a 3 switches with a router?

  - by Carlos Morales

  Hello everyone, I'm trying to rebuild the network from my work and I was thinking what is the best way to connect three switches and a router. The router has 4 ports so I thought to connect 2 switches to the router (each switch connected with 2 cables to the router) and then connect the third switch to one of the others with two cables. So is like this, two cables from switch one to the router, two cables from switch two to the router and two cables from switch 3 to switch 1 or 2. So my questions are: Is it better to connect the router to each switch with a cable or the more cables you have the better? If I connect the switch 3 to switch 1 or 2 is it better to connect it with a cable or you get better performance with more cables. If I'm wrong and there is a better or more efficient way to connect them please let me know. The router is a Netgear RP114 (I'll upgrade it to a Sonicwall NSA 240), switch 1 is a Netgear GS748T, switch 2 is a Cisco Catalyst 2924-XL and switch 3 is a D-link DGS-1024D Thank you very much

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