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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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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1answer
47 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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1answer
820 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 ...
0
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1answer
103 views

How to upgrade debian VM with more CPUs

For some reason whoever built the server I'm working on only gave it 2 CPUs in the hyper-visor, I can easily give it 4, but I'm positive that will break it, the kernel will not recognize the others.. ...
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1answer
566 views

Measuring CPU %steal on VMware and Hyper-V hypervisors

For Xen Linux guests, %steal time is readily available via top and other utilities. Is it possible to get this and related metrics from within a Linux guest when running a non-Xen hypervisor such as ...
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2answers
105 views

Partclone error

I am trying to clone a disk in a VMware Machine The initial situation is: When cloning, I get the following error: Notes: The VM is bootstrapped with the Arch Linux ISO. sda is a physical ...
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4answers
353 views

How can I zero files out inside a VMware image file so that their space can be reclaimed?

is there a command on Linux to remove a file but zeroing it's contents first? so if i do, something like this: rm -rf /var/cache/pacman/pkg/* it would overwrite each file on that directory with 0 ...
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2answers
770 views

How to force the time and date settings to refresh from the internet?

I'm running Ubuntu 12.04 LTS under vmWare. When I restart a suspended image, the system clock doesn't detect that the system time is out of date. In the Time and Date settings dialog, I've selected ...
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2answers
999 views

How to check which hypervisor is used from my VM? [duplicate]

So I'm running a VM somewhere and want to know what hypervisor the host is running. Any way to check whether it's running KVM or in a container? The vm is running Ubuntu
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1answer
104 views

centos 6.4 trouble with /dev/pts/ptmx

I have a problem with the server running on CentOS. CentOS has been upgraded to version 6.4 and has all updates. Updates were made according to the official repositories. On the server running the ...
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0answers
136 views

DNS issues when using VPN in Linux Mint

I'm using Windows8 as my host OS, and are running a Linux Mint VM on virtualbox, with its network being virtualized as NAT. I'm using Ciscos AnyConnect VPN to get access to a certain network. The ...
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0answers
293 views

In virtual machine manager, is there a way to add disk space to an existing disk?

I know that in virt-manager you can add RAM and processors to the virtual machine, but is there a way to increase the available disk space larger through the GUI? Edit: @slm was able to find the ...
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7answers
3k views

Easy way to determine virtualization technology

I have command line access to a Linux machine which may or may not be virtualized. I want to determine what kind of virtualization technology it runs on, if any (VMWare, VirtualBox, KVM, OpenVZ, Xen, ...
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2answers
140 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
66 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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1answer
1k views

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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0answers
90 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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2answers
320 views

Solaris11: Alternative to xVM Hypervisor?

AFAIK, support for the xVM Hypervisor - basically Xen - has been dropped in Solaris 11. Is there an alternative/replacement for it? How does it compare to Xen? Obviously there is zones if you want ...
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0answers
44 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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2answers
81 views

How to set up interchangeable VM guest/hosts

I'm looking for a way to set up a computer so that the disk is partitioned for multi-booting to two operating systems: Linux and Windows. Whichever one is booted, I want the other to be accessible as ...
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2answers
474 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
202 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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1answer
856 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
67 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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1answer
288 views

Emulate unplugging a network cable with qemu-kvm

[Background: I'd like to actually test How to take down a static network interface when not connected? ] I'm setting up a QEMU-KVM virtual machine using libvirt (via virt-manager). I put two NICs on ...
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95 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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2answers
799 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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0answers
182 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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2answers
480 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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2answers
243 views

Terminal-based (non GUI) virtual-computer program?

Are there any terminal-based (ie. non-GUI) virtual-computer programs out there? I've been using programs like VirtualBox and QEMU, but they're obviously GUI-based... I was hoping for a virtual PC ...
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2answers
2k views

CPU usage of KVM

I have a linux host with 4 KVM linux guests. All the guest are pretty much idle, having a load of <0.1 inside the guest. Now, if I do a top on the host, each KVM process is using something about ...
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2answers
3k views

How to enable Virtualization AMD-V Aspire one AO725 from BIOS or otherwise

I'm try to use the virtualbox to visualizer the system of 64bits but the error that get is: La aceleración VT-x/AMD-V ha sido habilitada, pero no es funcional. Su sistema invitado de 64-bit fallára ...
2
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1answer
725 views

How to achieve the effect of chroot in userspace in Linux (without being root)?

The goal is to install and run programs in a displaced (relocated) distro (whose / must not coincide with the global /) inside a host Linux system. The programs are not adapted for using a different / ...
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1answer
188 views

Running one OS per core

I'm interested in using a COTS board like the Wandboard for a project. On one hand I'd like to use something like Ubuntu for user interaction, sounds, TCP/IP stuff, etc. But I also need an RTOS like ...
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2answers
228 views

Can I have a bridged interface without an IP?

I have 2 NICs: eth0 & eth1 on a host OS which runs some VMs (LXC) under it. The hosts eth0 is connected to a private network and configured as the primary interface. The hosts eth1 is connected ...
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2answers
371 views

How to add a ms-dos partition table to a loop device?

I recently made a dd from a disk partition. I want to use it as a disk in a virtual machine. I can't because the disk has no partition table. Can I had a partition table to a loop device? how? ...
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1answer
732 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
110 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 ...
3
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1answer
49 views

memory buffering in virtual machines

Is there any point to doing disk buffer caching in a virtual machine, if the hypervisor OS is doing it? I wonder if buffering in the VM will just waste memory that could be better allocated to VM use, ...
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0answers
187 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
456 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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1answer
396 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
190 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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2answers
43 views

Running -march optimized software on another architechture?

I'm running an Athlon64 server with LFS and would like to have a local copy of the server in a virtual machine for testing purposes and building software. My PC uses an i7 and the existing server ...
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1answer
1k views

Is it possible to install KVM On A VMWare virtual machine? If so, what are the steps?

I want to understand how to use KVM in CenTOS. At the moment, all I have is a VMWare ESX 5.x server to use. Is there a way to get KVM working on a system that is running on VMWare? Essentially, a ...
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1answer
118 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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69 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
3
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2answers
494 views

Does FreeBSD support network virtualization like Crossbow?

Does FreeBSD support network virtualization like Solaris Crossbow? I've tried to follow the VImage links from the FreeBSD wiki page, but the links are mostly dead. If VImage is no longer part of ...
4
votes
2answers
1k views

Openstack for home cloud hosting

I am experimenting with a couple of technologies that I soon may have to use at work. So for now, I was thinking about duplicating the environment which I may have to create for my office at home so ...