General :: How To Virtualize Hardware
Sep 11, 2010
virtualization means putting more virtual computers on 1 physical computer. What my question is about is the other way around. Namely: how to make from different physical machines 1 virtual computer? The point is that I would like it to have the following features: data redundancy: data should be stored on at least x other physical computers access should be able to done on any physical node (so no master node).I would need to be able to place a normal Linux system on top of the virtual layer, so I can get all the benefits of Linux.I would like data to migrate automatically and physical computers to be able to be pulled/added at will.
I've been looking through Google for those things but I didn't find anything that only remotely resembled what I needed.Maybe you can give me a hint where to look at, or on what terms I would need to search?
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Feb 7, 2011
In my recent tribulations getting Linux based tools working at work I've gotten a lot of good answers just by searching here. But since this question is very subjective, and details are important, my searches just weren't quite working out.
I've been using Linux off and on since 94, Slackware... a stack of floppies as long as my arm. I say off and on because I've always been of the opinion that Windows had a superior selection of ready-to-run desktop software... I still think that's true, but since I'm pushing open source more at work ($44K a year to use Exchange? Seriously?) I figure it's time to throw in behind it at home, too.
My biggest hangup with a total transition is gaming. I can handle my desktop suite needs just fine with Open/LibreOffice and Seamonkey. The limited work I do with graphics and sound can be handled just as easily with existing open source applications (though I'm not really sure about video playback, yet. Finding good codecs for HD video that work well with Linux based players, WMP and Windows Media Center is kind of a pain in the ass.) Hell, pretty much everything I do on a day to day basis... a drastic improvement over 5 years ago.
The games, on the other hand, are killer. Two of my off and on favorites, World of Warcraft and EVE Online are reportedly well supported by Wine. A good chunk of my game collection, though, was purchased through Steam, which I understand has some issues with Wine. And there's also concerns about future games that get released ... some of which is offset by the constant improvement in Wine and similar packages.
What I'm considering as an option is simply going with Xen for a paravirt Windows guest and running my games in that. What I need to know, though, is how well will that conceivably work? Will a Windows XP or 7 (which one would I want?) guest in a Xen DomU have better gaming support than Wine provides? What other things am I not taking in to consideration that I should? Should I use Xen or whatever the free VMWare is (I'd prefer Xen, open source and all, but it VMWare would really do the job where Xen wouldn't...)?
AMD Phenom X4 955
8GB RAM
SATA 30GB SSD
2TB RAID storage which I would prefer to keep as a single chunk, but meh... it's 2TB.
I have installed CentOS 5.3-5.5, FC 13 and 14. Ubuntu, Debian and., all the major distros and all the hardware is supported by the prebuilt kernels.
Actual uses: MP3 rip/playback. Web browsing. Quicken. Occasional word processing/spreadsheet, media conversion including the dreaded DVD ripping (I buy the DVDs for my kids, but they can't touch them :P), and... hell, whatever it is that we do with our desktops and take for granted. Games. Lots of DirectX games.
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Aug 4, 2015
My current situations is this:
I got an W520 with an i7-2720QM and Nvidia Quadro 1000m. I want to virtualize with Debian as host and Windows as guest. Therefore i want to assign my Nvidia GPU to the guest.
The reason for this choice is because I'm an mechanical engineering student, and that requires alot of windows-only programs (CAD/FEM/matlab etc)..
I got stuck at Nvidias error 43 problem.
Current situation:
I know all my hardware supports VT-d and is activated.
I got the intel-iommu=on as a boot parameter in grub.cfg.
I have stubbed and blacklisted my Quadro gpu so the Win7 guest can acces and use it.
I got win7 installed and running, it detects and refuses the quadro card because its virtualized. I have tried used the 377.88 Driver and the newest, with and without kvm as hidden. I have deleted all hypervisor tags.. It still reports error 43 ..
This is my config file over my virtual windows machine:
Code: Select all<domain type='kvm'>
<name>win7</name>
<uuid>5ebc2f74-7bbd-482d-99f4-660155187f8d</uuid>
<memory unit='KiB'>6291456</memory>
<currentMemory unit='KiB'>6291456</currentMemory>
<vcpu placement='static'>4</vcpu>
[Code] ....
Do I use Xen insted?
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Nov 22, 2010
I'm probably in way over my head, but have recently been given a job that will be utilizing the systems in the Subject. My employer will be sending me to school for the basics (Red Hat System Administration). I currently have a Macbook Pro that I would like to be able to virtualize a server and install RHEL 5 to begin to read through manuals and anything else I can get my hands on. Wondering if the community has any advice for operating/installing RHEL 5 on a Macbook (virtualized preferably), as well as any other useful advice or comments in regards to 'speed learning' these systems.
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Feb 18, 2010
I'm having this issue with a Linux server that thinks it owns an IP that it doesn't.Background: We used to have a central server connected directly to the DSL modem with two interfaces. interface eth1 was setup to respond to three of our external IPs, I'll call them ext54, ext55, and ext56. The internal interface, eth0, was setup as a gateway for the LAN on IP 192.168.0.1.
We wanted to install a hardware firewall and virtualize the existing server. So now it's setup so that the WAN interface of m0n0wall is connected directly to the DSL modem and responds to ext54, ext55, and ext56 and its LAN interface is the gateway for the 192.168.2.0 network. The server was virtualized and it's eth1 configuration was changed to be 192.168.2.2 with a gateway of 192.168.2.1. Everything seemed to be working fine.
Problem: The server runs apache for our webmail system, which works fine from the outside (since I have m0n0wall NAT port 80 through to 192.168.2.2), but inside it fails.
As best as I can figure the server (which is linux Centos 4.3), thinks that it should still respond to IP ext54 instead of forwarding it on to m0n0wall to figure out where it should go. I've looked through all the config files I can think of on the linux server (ifconfig, route table, hosts file) and I can't see anything that would make the server think it is ext54. I've also checked the logs and config of m0n0wall to see if the packets are getting dropped, and again, I don't see anything.
I guess I should say that our DSL provider gives us the IPs ext54, ext55, ext56, ext57, and ext58. When I tracert the IPs on the server ext54, ext55, and ext56 don't hop at all as if the server itself serves those IPs, but ext57 and ext58 tracerts hop to the m0n0wall gateway correctly...which makes this even crazier in my opnion.
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Oct 12, 2010
My Ubuntu system is occasionally becoming very sluggish. I'm running many things simultaneously and it's very difficult to tell which program is the culprit.
I suspect that the sluggishness is due to disk activity since the CPU usage is consistently under 50% on each of the 4 cores of the CPU, and over 30% of the 6GB of RAM are free.
Is there a tool that can show me in real time the number of disk IO operations per second and the amount of data read/written per second? Can all this info be broken down and displayed per process?
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Mar 3, 2010
I want to write a shell script, so that at 9AM every morning a general will be sent automatically to my network users E-Mail ID. My users are as follows: akhtaruzzaman@a[URL], ariful.[URL] etc.
Below is my little effort:
# !/bin/bash
userlist=`cut -f 1 -d : /etc/passwd`
mail -s "mailbackup" << END
keep mailbackup in another drive daily for security purpose
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Nov 4, 2009
I'm using my Linux (SLES 10) server as a File Server at this point. I need to set File Permissions to nested folders differently to different groups. For example:
homesharedengineering* should be read only for groupA
homesharedengineeringadmin should be read & write for groupB Plus read only for groupA
homesharedengineeringautocad should be read & write for groupC Plus read only for groupA
I've been using Webmin and Putty to set permissions but Putty only allows me the Default Group, it won't allow me to set several groups on the same directory. Webmin seems to allow me to add multiple groups (Webmin --> Others --> File Manager --> Info & ACL tab will provide extended abilities) but when I add multiple groups, they don't seem to take effect? I'm wondering if my setup at the 'Share' level or at the hierarchy of my folder structure (unix based) needs to be set specifically?
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Jun 18, 2011
I have Windows 7 on my Dell Xps laptop, and I want to install Ubuntu or Fedora as a dual-boot. Will that cause my system to slow down?
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Jan 29, 2011
PackageKit is a system designed to make installing and updating software on your computer easier. The primary design goal is to unify all the software graphical tools used in different distributions, and use some of the latest technology like PolicyKit to make the process suck less.
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Jun 6, 2011
II'm a front-end web developer, I've always developed on Windows with technologies like XHTML, CSS, Javascript and Flash, I've dabbled with PHP and MySQL. I am well used to Windows workflows and tools, from Photoshop to Notepad++, Filezilla and WAMP server stacks to After Effects, and a swathe more - but always on Windows.I'm at a point where I think I need to start seriously developing on a Linux box, specifically at the moment to create web apps based on Node.js, but compiling tools and programs has become a task I'm more frequently required to do.
My question? I need to get my hands on a user-friendly install of Linux, but which one? I need common interface developer tools (lists welcome) to replace... well as many tools I have on Windows as possible.I need to be readily connected to the internet, I need OS updates to not destroy my workflow by crashing the OS, as I've seen Ubuntu do to various friends. I want efficiency, I need to be able to customise what I need to in order to perform development tasks.I guess this could be a long list, but - I don't have practical working knowledge of the Linux OS, nor how it "compares" to Windows (excuse my faux pas). I'm obviously willing to learn, but I'm far, far more keen to just... continue interface development, just on Linux instead of Windows.
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Jun 27, 2010
A friend of mine helped me set up a server which includes Squirrel Mail.It?s CentOS 5.3.I have a person who would like to access Squirrel Mail at remote sites.My questions is, I can create an account on the server which has KDE and the usual general applications and he would have the remote access Squirrel Mail but he doesn?t need nor does he want to access KDE or anything else on my server. He just want an account so he can use Squirrel Mail.
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Mar 23, 2010
I have the impression that not that many people understand the scope and limitations of GNU General Public License. This is somehow my basic understanding of it. If I take a program covered under the GNU license, first of all I have the right to get the source code. Second, I can modify it at will. Third, I can redistribute it as will too but the new code will necessarily will have the same GNU license. This made me wonder how people actually can charge for software derived from Linux, for instance, Red Hat. Well, my impression is that they really make profit only out of services. In this thread [URL] I think I found a lot of confusion, even from a moderator (not intended to offend). Red Hat is based on Linux and it is necessarily covered under GNU. Somebody probably bought the program from RHE and can make it available at no cost.
Nevertheless, the moderator decided to warn the user. In this article [URL] it says the following:"Our training is not designed to promote vendor lock-in. Though these courses are based on Red Hat Enterprise Linux, the source code for [RHEL] is available to the community via the GPL [GNU General Public License]," said Red Hat spokewoman Leigh Day. This thread [URL] shows yet more confused people. Is there is a glitch in this type of license that prevents programs like RHEL to be redistributed for free? Why their license page doesn't mention GNU license? Or the problem is just that people get overwhelmed by this license and are afraid to be penalized and get paralyzed? By the way, RHEL is just the example. The key question is about the license!!
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Sep 9, 2010
I need to allow certain users (who do not have root access) to be able to stop and start specific daemons
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Jul 16, 2010
What is the general opinion of the Mandriva and Debian distros? Mainly asking what kind of user you consider the distro to be for (beginners, advanced, total newb, whatever), and whether you think they offer as much to an extremely experienced user as they would to a newb.Those are my two favorite distros, and I really like Mandriva a lot. I'm trying to pick one to stick with throughout, but I'm not really sure if Mandriva is too automated and Windows-user oriented like Ubuntu (I haven't really delved into the deeper aspects of Linux so I have zero experience in this area now). This might sound a little elitist but I don't want to be using Mandriva and just be automatically dismissed as a newb on first impression just because I'm using Mandriva (although admittedly I am a bit of a newb at the moment, I don't plan on staying one).
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Apr 3, 2010
Im trying to get a general understanding put simply.
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Jan 9, 2011
Friends i am facing some issue with Linux i want to know how many kinds of file do we have in Linux and what are soft link and hard link mean and the difference. However i want to know also why do we use it in Linux
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Mar 27, 2010
I have a computer on LAN running ssh. I can normally tunnel the GUI application usingssh computer-name -X program-nameBut I wam my full desktop to be running on a remote computer using ssh so that I can just use that computer remotely like a local desktop. For this I think I will need to run KDM (or GDM ) remotely, what configuration do I need to do to make this happen?
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Jun 15, 2010
I'm wonder what the differences are, especially as it pertains to SharePoint. Why should I pick one over the other or does it matter? Also are there any Linux browser solutions for SharePoint, besides Wine + IE 6.
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Aug 5, 2010
I have extra P4 PC (Dell Dimension 2400). And I would like to use this PC as NAS. What is the best way to make NAS from a PC.
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Jun 7, 2011
tar cvf backup.tar -C / / # or tar cvf backup.tar /
produces an archive like etc/ and gives warnings
On the other hand produces an archive like
And gives no warnings. I got the last one from a Debian tutorial.
Which is best for a system backup, do they work exactly the same?
Is there no difference between tar -tvh producing
And tar -tvh producing
From an archive
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Jul 23, 2010
At this dir /lib/modules/2.6.18-164.el5PAE/ have dir on the name build, if i use the command "DIR" i can see the it there but when i try to cd into this dir it's say " No such file or directory" i Need this dir cause i want to run vmware and it's the c header / kernel dir
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Jul 28, 2010
I'm not sure to whom I should report certain bugs, to the program developers, or to the WM developers. More confusion if plugins are involved.Flash, in opera, behaves quite bad on openbox, but in fluxbox it's substantially better (usable). I don't know about KDE or GNOME. So, whose bug is it, openbox', opera's or flash's?Conversely, chrome's and chromium's flash will behave badly on fluxbox (and somewhat similarly to flash's problems on opera under openbox!), but almost perfectly on openbox, it will just "go crazy" sometimes playing videos, but all you need to do is to kill flash (just flash) and reload the page, or even open and close the part where flash would be shown (like individual items on google reader), and it will work normally again. This case isn't much of a problem of bug "ownership" because fluxbox is, sadly, discontinued, as far as I know.
The develpment version of gimp, 2.7, again, behaves somewhat strangely with openbox, regarding window management, while gimp 2.6 was normal as 2.7 is in fluxbox. Gimp's or openbox' bug?
At some point specific distributions may have something to do with the bugs too, I was forgetting that point.Would be interesting if there were a sort of "unified" bug report place, where developers from all the involved software could decide whose "fault" it is and exchange the bits of information they may have on how to solve it universally. I think that otherwise, bugs being solved more independently, could produce collateral bugs somewhere else, I guess. Like using an hypothetical fluxbox' fix for opera's flash problems on openbox culminating in the problems that chrome has with flash on fluxbox. But hopefully developers have something more or less organized to deal with this sort of contingencies, I can't be the first person to think of that, but still, I'd like to know whom to report the bugs to in this sort of situation. "Everyone" involved? Well, at least the main suspects I guess, as I hardly can track the cause of a problem to some obscure library that is at some point used by some program or WM.
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Sep 13, 2010
I SSH into a server from my windows partition using putty. The connection requires a private key that is in my widows partition. This all works fine.
Now, How can I do same from my linux partition? Can I copy the key to my linux partition somewhere so I can connect from my linux partition as well? Or do I need to setup separate public/private key for my linux partition?
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Sep 11, 2010
In output of a top utility, why summation of CPU% is much greater than 100%?
I have RHEL 5.2 with two processors.
Code:
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Sep 30, 2010
it is possible to have both KDE 4 (which is installed now with Mandriva 2010) and KDE 3.5 (which I would like to have as well) either together, or replace 4? I like the look of KDE 3.5 better than 4 is why I ask.
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Dec 10, 2010
I have a Holux GPS that I'd like to get working on my Debian install. I connect the GPS to my system using the USB port and can see the device listed when I execute lusb. However, nothing is showing up under /dev that will allow me to interface with the GPS.
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Mar 20, 2010
What RCS is please
ref: [url]
would like to know what it is before I install awstats
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Sep 14, 2010
i have a dvd writer,its working properly in windows. in linux i can use cd, but can't use the dvd.
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Jan 13, 2011
i want to get linux rhel5 cd.i worked on ubuntu and i feel boored now. how to bring the linux5(anaconda) cd.
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