Virtualization is the process of using software to create a virtual resource of something; usually, it refers to hardware virtualization, the act of running an operating system (referred to as guest) inside an host system.

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Guest addition already installed in Linux mint

I have recently installed Linux Mint 14 on a VirtualBox VM and it seems that guest additions are already installed. I did not install them. How is this possible? Does Linux Mint know that it is ...
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170 views

Destroying KVM first try virtual machine

I'm trying to understand how KVM works, working on ubuntu 10.04 server. I created one with sudo ubuntu-vm-builder kvm lucid --arch 'amd64' --mem '512' --rootsize '10248' --swapsize '1024' ...
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81 views

Access times for different partitions on same hard disk

I have partitions, /dev/sda1 and /dev/sda2. / is mounted on /dev/sda1, while all other data is on sda2 which has more size allocated to it. I want to save the virtual machine images (VirtualBox ...
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51 views

Vagrant-lxc container not starting

Firstly I'd like to say that I'm new to LXC and I may have some problems getting the right idea of how the things should work. The thing is I'm trying to start a previously download vagrant-lxc box ...
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412 views

One host, two virtual machines that cannot ping each other. How to solve

We have Virtual Machines operating within the KVM environment. We setup one as a dev server running Apache etc., and the other as a Windows development environment. The two environments are setup ...
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2answers
352 views

ttyO ports do not have the good port address on QEMU 1.4.0 running image for beagleboard-xm

I'm running an Linux Image (kernel 3.2.8) for beagleboard-xm on QEMU's 1.4.0 emulator Ubuntu distribution for 13.04. My image is created using Buildroot beagle_defconfig. I added some pkgs to be able ...
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1answer
381 views

Running a query without the OS cache

I want to emulate a client site who doesn't have much caching because they have so much I/O all the time. I want to run a SQL query on my machine (on my VM to be precise) with the same limitations ...
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2answers
362 views

What to do when ubuntu-vm-builder completed?

I already have the VM (Xen based) installed, but the Xen config used specified "Linux kernel" as "None". The exact command line was: ubuntu-vm-builder xen precise -v --debug --addpkg openssh-server ...
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1answer
2k views

PCI passthrough without VT-d

My CPU is Intel T9300, it supports VT-x, but it does not support VT-d. I am using Xen pvops virtualization. I have a PCI device, and my host system can work without it. So I am thinking if it is ...
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1answer
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How to convert Windows 7 partitions to qcow2?

I know I can use qemu-img tool to convert a raw partition into a image file. But Windows 7 has two partitions. I tried: qemu-img convert /dev/sda1 /dev/sda2 win7.qcow2 But the generated file does ...
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136 views

VirtualBox appliance import locks up system

I have a Windows Vista x64 appliance that I am trying to import into the Open Source Edition of VirtualBox on Linux Mint 11 x86-64. The ovf file is 21.3 GB in size. The problem I am having is that ...
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625 views

VirtualBox disk performance?

This option was newly added to latest version of VBox , googled a lot , seems no much information was revealed , could anyone please help me pick one disk format ? Which one owns better performance ...
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14 views

Giving OVZ containers their own IP

Is it possible to give an OVZ container its own external IPv4 address? Say I hire a dedicated server and purchase extra IP addresses. Can I assign those extra IPs to the containers? If so how would ...
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1answer
1k views

How to enable WIFI on VMWare Fedora 12? (It's detecting and working fine on Windows 7)

I am new to Linux. I have Fedora 12 running on my VMware. I am unable to see any options to enable WIFI connection on Fedora. When I am accessing Internet through WIFI and its working perfectly fine ...
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1answer
2k views

Bridging ethernet interface

I have a server with 4 public IP's. I have it with this configuration and I want to bridge the interface eth0 for using it with KVM: So, I have 3 IP's (A.B.C.144, A.B.C.145, A.B.C.146) and another ...
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1answer
46 views

What software allows the change of runtime-environment, while keeping the same kernel running?

I know that with a GNU/Linux distribution you can switch between different distributions at runtime when they use the same kernel or the kernel is compatible between 2 or more different distributions; ...
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1answer
487 views

Qemu Arm how to passthrough a PCI Card

I'm trying to access a PCI wifi adapter on a Qemu, simulating vexpress-a9 board. I'm following is this tutorial which shares a passthrough PCI card of the host machine to a guest machine running on ...
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142 views

virt-install error: install methods 'cannot be specified for container guests'

I was following the Dell RHEL VM guide but working on CentOS 6.4 i386/686, and got to the virt-install step. After correcting a typo, I went back and deleted the vm.xml file it was suggested I ...
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2answers
610 views

Linux-distro with built-in Xen?

Are there any Linux-distros with Xen "built-in" and ready to act as host for virtual-computer out-of-the-box? Alternatively, distros where you can easily select "Xen-host" as an install option? I'm ...
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1answer
608 views

Do USB emulators exist for Linux?

I'm looking for software that lets me have many virtual USB drives on my Ubuntu installation. I want them to be seen by virtual machines in VirtualBox so I can do backup operations. I need the drives ...
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1answer
340 views

vmstat on virtual machine and large values

Hi I'm using vmstat to track machine performance during some tests (jmeter). This is virtual machine running on a big machine where lots of other virtual machines are installed (about 20 virtual ...
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1answer
180 views

Xen error on CentOS

During the creating of a new virtual server in xen using this command xen-create-image --hostname=minecraft.koanhosting.com --ip 87.98.249.146 --install -method=debootstrap But I keep getting this ...
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1answer
113 views

High-latency VM-centric workstation, vs. low-latency, (but, hack-ish) configuration for Oracle 11g

tl;dr Low-latency native (i.e. VM-less) development workstation vs. higher latency VM-centric workstation? Hey StackExchange, I'm unsure of whether or not I should be using a VM for development, as ...
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1answer
31 views

init: /etc/init.conf: Unable to load configuration: No such file or directory

Running Linux 6 on VMWare, I noticed this in the system message log: init: /etc/init.conf: Unable to load configuration: No such file or directory What's the cause of this error? How do I ...
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1answer
45 views

OS X virtualization for software development

I am a OS X user and I work on multiple platforms for which I need multiple dependencies. I want to separate my different development dependency packages in virtual environments so they are all ...
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2answers
97 views

KVM loss of data?

I'm planning to install KVM on Linux Mint. I heard it is possible to corrupt files and partitions. There are warnings here but I haven't finish reading it (I will tonight). There is also another ...
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3answers
50 views

Virtualizing a Low End Virtual Server

I have started to teach the lesser fortunate children in my area about technology and computers in general. Some of them show some real promise and I'm planning to introduce them to Linux and Open ...
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2answers
419 views

How can I get kqemu or even just qemu to show up in virsh capabilities on CentOS 6.4?

I have a CentOS 6.4 box that I'm trying to set up a VM on to run WinXP. This box doesn't have VT, which may not be ideal, but I'll settle for less than ideal. Apparently I should be able to install ...
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1answer
608 views

virt-install complains “error: no such option: --network-bridge:br0”

I was following the directions here to set up a VM in CentOS 6.4 i386/686. But I'm getting this error: $ sudo virt-install --network-bridge:br0 --name vm1 --ram=1024 --vcpus=1 --disk ...
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1answer
1k views

Installing KVM on CentOS 6.4 without GUI (yet)

I've installed CentOS 6.4 from the 'minimal' iso, so it doesn't come with a GUI. Will this question's answer allow me to install KVM, or do I need to install KDE or X-server or something first?
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1answer
104 views

Help understanding interfaces in Backtrack

I am fairly new in UNIX and have recently installed backtrack on a VMWare box on my machine and I am trying to use DHCLIENT command but am having trouble in understanding the interfaces. I am ...
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1answer
567 views

Difference between Oracle VM and Citrix XEN?

I`ve been testing Oracle-VM this day. Is there anyone out there who has tested both XEN-based solutions? What are the main differences?
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1answer
1k views

How to increase Xen guest CPU utilization?

My Xen dom0 is a Gentoo x64 pvops. I boot my guest Gentoo, in PV mode, system with the same kernel my dom0 uses. When I emerge in the guest system, building a CPP package, I am experiencing low CPU ...
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1answer
3k views

How to check if VT-X is enabled in BIOS?

How to check if VT-X is enabled in BIOS? I have vmx in CPU flags, and no access to the BIOS. (I need to install a KVM VM on RedHat Enterprise Linux 6.1).
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13 views

Differences between primary and secondary VGA pass through in virtualization

Xen, and more recently KVM, allows you to pass a VGA adaptor from the host to the guest as either a primary or secondary device. Both links provide some explanation as to why passing a VGA adaptor ...
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1answer
229 views

How may I Obtain a RHEL/CentOS in OVA Format?

My company has an internal cloud that provisions VMs either in an OpenStack (KVM) or a VMware (ESX) hypervisor. It already provides RHEL 6.4 on the KVM, but I've used up the max number of VMs from ...
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1answer
84 views

How to execute some shell script before VM suspend?

I have created one Centos VM. And I have created some IP aliases. Once I suspend and resume the VM my IP aliases are all going down. So I just want to capture the aliases address before suspend and ...
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77 views

benchmarking ftp in 3 methods of virtualization

My Bachelor Final Project is about benchmarking visualization methods with ftp, web and mysql services: installing Debian on xen (para-visualization) kvm and lxc with equal resources config (equal ...
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37 views

Can I use Synaptics' output in KVM?

I have been looking at MenuetOS, a simple graphical OS written entirely in FASM. The only reason I don't actually use it is that its touchpad support is pure garbage: every time I try to run MenuetOS, ...
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1answer
60 views

Non-persistent differencing file

I have a large file (5-10 GB) and want to access this file in a special file system with the following conditions/features: There is a single process that reads and write on the file. When the ...
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0answers
77 views

omap3530/3630 emulation on QEMU for overo and beagle machines

On QEMU's source code for beagle and overo I can see that the cpu emulated is the OMAP3430. I will like to know if it's a way to make QEMU emulate OMAP3530/3630 cpu's for those machines? On bealge : ...
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170 views

How to do incremental backup of .img files containing windows partition?

On an OVS I have a few windows machines. I want to create a full backup their .img disk files, thats done, .img.gz. Than I want to incrementally backup their C:/ partition, but thats not working. ...
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153 views

How to manage 2 vm using upstart?

I use an upstart script to monitor a vm and respawn it when it gets killed. I would like to simulate a failover by doing the following. Create a clone of the VM1 say VM2. When either of them is ...
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0answers
369 views

Xen is unable to use URL's to install CentOS

I can't seem to use URL's when using the netinstall for CentOS, I'm installing CentOS on a Xen VPS. I keep getting this error in the terminal window, when I use the URL: ...
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67 views

list of vitualization technology that run on linux [closed]

We decide to select a solution for virtualization. Is there any benchmark for comparing them by eachother? I have list of vitualization technology that run on Linux
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234 views

Configure vmware-tools without an initrd image?

Is it possible to run vmware-tools without an initrd? I don't know why I should use an initrd and it makes my kernel compilation more complicated. I can boot into my kernel without initrd but when I ...
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587 views

KVM network bridge and public static IP for both host and guests [closed]

I have a Debian Server with 4 public static addresses. There is a KVM guest (also Debian) installed and running. What I want is to give the guest an IP of the host, so that both machines have public ...
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121 views

Getting from proficient to expert [closed]

I've got my vacation coming in and thought I might use that for something useful. Essentially, I've been a Linux user since around 1995 when I installed Slackware 2.0 on my computer and have been ...
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499 views

Debian VPS, no loop devices present, modprobe fails

After acquiring a new virtual Debian squeeze I ran into a problem regarding loop devices. My plan was to set up an encrypted FS in a regular file and mount it. Unfortunately I can't do that since ...
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563 views

Any better alternative to chroot on an OpenVZ VPS?

Are there any better alternative to chroot environment? I'm thinking about running nginx on a jailed environment. BTW, I'm on OpenVZ VPS, so modifying the Kernel is a no-no. (I think that prevents ...