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• Virtualbox, merging snapshots and base disk

  - by Henrik

  Hi, I have a virtual machine with about 30 snapshots in branches. The current development path is 22 snapshots plus the base disk. The amount of files is seemingly having an impact now on IO and the dev laptop I'm using (don't know if it is host disk performance issues with the 140GB total size over a lot of fragments, or just the fact that it is hitting sectors distributed across a lot of files). I would like to merge the current development branch of snapshots together with the base disk, but I am unsure if the following command would produce the correct outcome. I am not able to boot this disk after the procedure completes (5-6 hours). vboxmanage clonehd "C:\VPC-Storage\.VirtualBox\Machines\CRM\Snapshots\{245b27ac-e658-470a-b978-8e62137c33b1}.vhd" "E:\crm-20100624.vhd" --format VHD --type normal Could anyone confirm if this is the correct approach or not?

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• Options for transparent data encryption on SQL 2005 and 2008 DBs.

  - by Dan

  Recently, in Massachusetts a law was passed (rather silently) that data containing personally identifiable information, must be encrypted. PII is defined by the state, as containing the residents first and last name, in combination with either, A. SSN B. drivers license or ID card # C. Debit or CC # Due to the nature of the software we make, all of our clients use SQL as the backend. Typically servers will be running SQl2005 Standard or above, sometimes SQL 2008. Almost all client machines use SQL2005 Express. We use replication between client and server. Unfortunately, to get TDE you need to have SQL Enterprise on each machine, which is absolutely not an option. I'm looking for recommendations of products that will encrypt a DB. Right now, I'm not interested in whole disk encryption at all.

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• remove apache tar binary package in centos

  - by user119720

  I need help in removing binary package that had been installed in my linux machine. The scenario that I am having are such as like this: I've already install latest apache that I get from its website(httpd.apache.org) through Unix binary package(tar.gz) After successfully install program,the apache server web perfectly without any issues. But then I having a thought,if there are another latest release version of apache in the future,then I need to make sure that i can upgrading current apache or reinstalling the new version apache. So my question is, how do I ensure that I have remove the old remove apache and all its dependencies so that it will not having conflict(probably) when installing the new apache. Right now the only thing that i can think of is to remove all the apache folder manually : rm -rf /apache2 Hope someone can shed some light about this.Thanks.

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• Multiple EyeFinity Display groups

  - by Shinrai

  Is it possible with an EyeFinity enabled card to make multiple display groups at once? I was playing with a FirePro 2460 and while a 4x1 or 2x2 display group works quite nicely, if I make a 2x1 display group and then select one of the other displays to try to make a second 2x1 display group, it disables the first one. Is there any way to circumvent this behavior and set up two separate spans on the same card? Additionally, can you set up distinct display groups if they're on different cards? I will have the opportunity to test several of these cards in one machine very shortly, but I'm curious if anyone has any experience. EDIT: I can confirm that you can make multiple spans on multiple cards (as long as they don't cross cards, obviously) (If the answers are different for FirePro/FireMV cards and Radeon cards, that is helpful and relevant knowledge - I doubt it, though.)

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• Is it possible to put only the boot partition on a usb stick?

  - by Steve V.

  I've been looking at system encryption with ArchLinux and i think I have it pretty much figured out but I have a question about the /boot partition. Once the system is booted up is it possible to unmount the /boot partition and allow the system to continue to run? My thought was to install /boot to a USB stick since it can't be left encrypted and then boot from the USB stick which would boot up the encrypted hard disk. Then I can take the USB key out and just use the system as normal. The reason I want to do this is because if an attacker was able to get physical access to the machine they could modify the /boot partition with a keystroke logger and steal the key and if they already had a copy of the encrypted data they could just sit back and wait for the key. I guess I could come up with a system of verifying that the boot has been untouched at each startup. Has this been done before? Any guidance for implementing it on my own?

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• slow disk writes between host and guest

  - by Jure1873

  I've got a ubuntu (server kernel) on a amd x4, 4gb ram, 2x seagate sata 1 tb disks for testing virtual machines and the write performance is very slow. The two disks are in a software raid1 array, one small boot ext3 partition, 10gb system partition and the rest is a xfs partition (about 980) gb for data (virtual machines). If I'm copying files from the virtual machine to the host with rsync or scp the copy frequently stalls or goes at about 1mb/s. What's wrong? I've tried disabling barriers on xfs, increased logbufs, allocsize, but it seems nothing helps. The strange thing is that await (for example during copying) for sda is usually under 100, while for sdb is around 400. Any ideas on what could be wrong / what could I do to improve this setup?

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• How to do port forwarding in D-link Glb802c?

  - by Manish

  I have some questions about port forwarding on my D-Link Router GLB-802C. For example: My local machine's IP is 117.1.1.81 My router's IP is 117.1.1.1 My Public (Web) IP is 117.16.1.1 My questions are: What will be my Global Address 'To'? What will be my Global Address 'From'? In Destination Port "From" and "To" what do I select in the drop down list and port no for forwarding HTTP traffic (for my website)? In Local Port, what do I select in drop down list and port no?

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• My Windows 7 computer won't boot up and a BSOD keeps coming up; how do I solve it?

  - by opj

  Whenever I boot my Windows 7 computer, I get a blue screen of death with the following details: A problem has been detected and windows has been shut down to prevent damage to your computer. If this is the first time you've seen this stop error screen, restart you computer. If this screen appears again, follow these steps: Check for viruses on your computer. Remove any newly installed hard drives or hard drive controllers. Check your hard drive to make sure it is properly configured and terminated. Run CHKDSK /F to check for hard drive corruption, and then restart your computer. Technical Information: * STOP: 0x0000007B (0xFFFFF880009A98E8,0xFFFFFFFFC000000D,0x0000000000000000,0x0000000000000000) What does this mean, and how can I fix it so I can boot my machine once again?

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• How to Extending a logical volume in WMWare

  - by Mercer

  down vote favorite i have a CentOS 6.3 into my Virtual Machine. I have 2 Disk: Disk#1 = 18G Disk#2 = 20G [root@vm ~]# df -h Filesystem Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_system-lv_root 1008M 250M 708M 27% / tmpfs 1.9G 0 1.9G 0% /dev/shm /dev/sda1 194M 31M 154M 17% /boot /dev/mapper/vg_system-lv_home 504M 17M 462M 4% /home /dev/mapper/vg_system-lv_opt 2.0G 68M 1.9G 4% /opt /dev/mapper/vg_produits-lv_grid 6.9G 2.5G 4.1G 38% /opt/grid /dev/mapper/vg_produits-lv_oracle 6.9G 144M 6.4G 3% /opt/oracle /dev/mapper/vg_system-lv_tmp 2.8G 71M 2.6G 3% /tmp /dev/mapper/vg_system-lv_usr 2.5G 1.6G 799M 67% /usr /dev/mapper/vg_system-lv_var 2.0G 278M 1.6G 15% /var So i want to extend my /tmp and my /opt/oracle like this: 10Go in/tmp 13Go in /opt/oracle Thx.

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• TOP CPU usage for whole system

  - by heike

  I am using a machine that has using cat /proc/cpuinfo | grep processor | wc -l returning 8 I am trying to load the server using a load generator that I wrote, and capture the behaviour of TOP command for idle (as the software that is tested on server runs on ROOT). Doing the load as an increasing step function, I capture the idle state every second, and see the result. Strange thing is that when I increase the load every 1 minute, the idle state is infact increasing (??). This honestly does not make sense .. I thought with more load, the idle state will decrease, and the cpu usage will increase. Is there any reasonable explanation for this behaviour, maybe for the server utilization itself? Thanks for any feedback -- ok, no idea for the down vote. but I try to find this behaviour a lot, can not find any reasonable things to explain this ..

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• Receiving faxes on printer even while computer is shut down?

  - by Supporter13

  I normally send faxes with a very old fax machine and I was thinking it takes so much time for every fax to be scanned for all the numbers so I would like to send faxes with a printer. I already have an all-in-one printer, it can scan and print, but I have the document I want to fax on my computer already, so there is no need to scan. Now, the question is if I buy a fax capable printer, will it receive my faxes even when the computer is shut down or do I need to keep the computer on? What I really want is a way to send a lot of faxes to a lot of numbers as fast as possible (the document already in the computer through scan or sending) to be able to receive the fax in my computer (even while off) so I can print it with my printer If both are possible then what requirements do I need? Also, I could not find any info on the internet about receiving faxes on the computer.

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• How to trigger a check for updates in Firefox programatically or from a command line?

  - by Triynko

  Is there a command line switch for firefox.exe or an "about:" URL that will either force an update check or at least display the Help/About dialog, which checks for updates and tells if you're running the latest version? One site claimed that the "about:" URL was the same as menu Help - About, but it's not. I built a program to automate the updating of various programs on my machine, and most programs have command line tools for checking for updates. Windows update has wuauclt.exe, Java has jucheck.exe. For some applications, I can even automate the interface, but it's difficult in Firefox, because the main window title is unpredictable (it depends on which web page is active), and all Firefox windows seem to use the exact same window class name.

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• Wifi and eth behavior

  - by r00ster

  I have a wireless router 150M Wireless Lite N Router Model No. TL-WR740N / TL-WR740ND. Normally, when I'm connected to the local network using eth0 I can ping other machines by issuing ping name. When I'm connected through wifi I have to issue ping name.domain.com. The machine is only visible in intranet. How to achieve the same behavior with wifi? The second problem is, that I can not connect to some external sites through wifi but through eth everything is ok. I guess that is related to some port forwarding, but I'm not sure. How can I resolve this issue? EDIT: I'm using Linux Mint.

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• How can I get rsync to ignore missing files?

  - by Joe Casadonte

  I'm executing a command like the following to several different systems: $ rsync -a -v [email protected]:'/path/to/first/*.log path/to/second.txt' /dest/folder/0007/. Sometimes *.log does not exist, and that's OK, but rsync generates the following error: receiving file list ... rsync: link_stat "/path/to/first/*.log" failed: No such file or directory (2) done Is there any way to suppress that? The only way I can think of is to use include and exclude filters, which just seem a PITA to me. Thanks!

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• Saving small text files is slow over Win Server 2008 R2 VPN

  - by Buckers

  We have a VPN connection to our Windows Server 2008 R2 machine, and the connection works fine. Large files go back and forth fairly quickly, but we use the connection mainly for working on small text files (.aspx, .asp, .php etc). What we find very annoying is that even the smallest of files, there is a noticeable delay of between 2-5 seconds when saving any changes. As we often make changes to code and are constantly saving, this is becoming a problem. Is there anything that might be causing this delay? Or is there anything we can do to speed it up? The connection is definitely not the issue as we have a constant 5Mb upload from our server, and 20Mb+ down on the remote machines. Thanks, Chris.

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• Connecting to iSCSI Target

  - by Joost Verdaasdonk

  I've installed Microsoft iSCSI Software Target 3.3 on a server 2008 R2 machine and created a new iSCSI Target. In the target I created a new Virtual Disk. From another server I started iSCSI Initiator and in Targets | Target I typed the IP of the Target. (Also tried DNS name.) But when I click Refresh I never see the target. Through googling I found this Youtube tut from a French guy doing pretty much what I did (only difference is I'm in a domain). I first though that maybe Port 3260 was closed but its not I can telnet to it. Also disabled all firewalls to see if that was blocking anything... No luck so far. Does anybody know of possible reasons why I can't connect to the iSCSI Target? If I can provide more info please let me know what's needed? Extra info: I've used this tut to set things up.

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• Sign out of messenger on Windows 8

  - by jmlumpkin

  I just installed the Windows 8 Consumer Preview. Just going through the default procedure, I let it use my Xbox Live account to create a user. When I then went and turned on my Xbox, it now notified me that I was logged into Messenger in two locations. I went back to Windows 8, and turned my Live account into a local account on that machine. But when I then turned the Xbox again, I got the same message. Is there a way to just 'sign out of messenger' on Windows 8? Or is there a location to even see where I am signed in at?

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• How to permanently disable Firefox Flash plugin sound in Win 7 now that plugin-container.exe is here

  - by Subuser

  I want Flash to play without sound on my machine, and I want that preference to stick so that new sessions don't surprise me with sound. Using FlashBlock while trying to remember to disable sound every time a flash window is started doesn't do the trick for me -- it's too difficult to remember to check the mute status before and after playing videos. Previously, using Win 7 and Firefox, one could selectively disable sound from Flash plugins using the method described in this question. Older methods of disabling it included the plugin called FlashMute. FlashMute fails me even when this trick has been employed, and the volume method described in the previous question only works for the currently live session, resetting sound to maximum volume whenever the plugin container is restarted. What is the best way to disable Flash sound?

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• What software to use for data backup?

  - by ViliusK

  What software should I use to make back-ups for of my computer files? Features I need: copies should be backup'ed on my Ubuntu server. client soft should monitor folders which I've chosen to backup. client soft should run on Windows XP, Windows 7, Linux. there should be Web UI to view backup'ed file versions. there should be availability to see diff with older versions. backup should be done over Internet to remove machine - server. Any suggestions?

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• How do I install the vi text editor ONLY on my Cygwin installation?

  - by gath

  I have managed to install the Cygwin on my Windows Vista machine. I installed using the default settings. When I try to do vi in the Bash shell, Bash tells me command not found. I believe I need to install the Cygwin editors package which include the vi editor. The nightmare is every time I run the Cygwin setup and select ONLY the editors package and specifically the Vim and select install, Cygwin setup tries to install all other packages, very frustrating!! Is there an easier way of installing just a single package using the Cygwin setup utility?

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• getaddrinfo(3) failed

  - by user101289

  I'm trying to connect to a webservice using a PHP wrapper (which is using curl under the covers). On my local linux machine running PHP 5.3 it works perfectly. However, when I move to a remote server (also running PHP 5.3 on Linux) the call the the webservice URL returns: getaddrinfo(3) failed for http://server.host.com:8080/login I get a similar error from a ping on the remote host: ping: unknown host http://server.host.com:8080/login But when I issue a curl request from the command line, it returns the expected URL. Can anyone shed any light on this issue? Thanks!

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• How to Install Apache Solr / Java on CentOS?

  - by geerlingguy

  I've seen only one or two tutorials for installing Solr, and particularly Java, on a CentOS machine, and they seem to be overly complex; heck, I can't quite figure out which version of Java (it seems there are many) to install... I'm not a full time sysadmin, so I would like to know what Java version/package I would need to use, and if there's a good tutorial with relatively easy to follow steps for installation. I'm going to try to get Solr working with some Drupal sites, and that part of the equation doesn't seem as hard as the Java side...

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• How can I configure Windows Server 2008/IIS 7 to send email via an asp.net web application?

  - by Steve French

  I recently moved a long-functioning web app from a Windows 2003 server to a windows 2008 server. Everything works fine, save for the email service (send password and the like). The code works on my local machine and the original web server. The system throws no errors, but the message stays endlessly in the Queue. I have granted full access to all relevant users (Network Service, IISUsers, etc). Is there something I'm missing, or does IIS7 just not send email via web applications?

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• Establish direct cable connection between Windows 8 PCs in home network

  - by Marie. P.

  I'm running two PCs, a desktop and a laptop with Windows 8 Release Preview ("Build 8400"). They are connected to the same router in infrastructure mode, thereby having wireless internet. Due to often file synchronization between the machines I want to establish a cable connection that allows direct file transfer, without needing to use the wireless. When I plug in the cable (normal, not cross-over), I see in "Control Panel\Network and Internet\Network Connections": "Ethernet - unidentified Network" on both PCs. Transferring a file between both still only uses the WiFi via the Router. I noticed that when turning off the wifi on one PC, I can set up a shared internet connection that will work via Ethernet-cable, but since sometimes only one PC runs, sometimes the other one, I do not want to have the internet of one machine to be dependent on the other one being switched on. I do not have a crossover-cable, but since I did connect the PCs already successfully (just without both being on the internet), I'm sure that this should also work with a normal ethernet cable.

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• Package temperature above threshold, cpu clock throttled

  - by drN

  I am running 64 bit Ubuntu 11.10 on an i7 with 8gigs of ram. I thought of putting this on askubuntu.com but decided that maybe the question has a much broader appeal. I have the following error message popping up when I run math simulations. CPUn: Core temperature above threshold, cpu clock throttled (total events = xxxxxxx) CPUn: Package temperature above threshold, cpu clock throttled (total events = xxxxxxx) I realize that this is a hardware warning message (machine check exception, correct me if I am wrong). How do I turn these messages off? Since it doesn't seem to have a detrimental effect of my calculations or my computer (presumably), I don't like it cluttering up my virtual console screen with hundreds of these messages.

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