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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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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1answer
283 views

Virtualbox under Proxmox

On a Jenkins Master-Slave configuration and need to run on the slaves Kitchen tests on several jobs. Kitchen for those who do not know it, runs infrastructure on demand using Vagrant and VirtualBox ...
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1answer
16 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
395 views

How to Free Up Space in a Dynamically Growing qcow2 VM image?

This has happened to one of my VM's that's running CentOS under Proxmox. I copied about 40 GB of data into a VM. I then deleted that 40 GB data a day later. Now taking a backup of the same VM takes ...
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1answer
89 views

Problems setting up own Cloud Lab

I'm trying to set up an own Cloud Lab on a self-built server. Server details: Board: Gigabyte Z77MX-D3H TH CPU: Xeon E3-1245 v2 16GB Crucial Ballistix CL8 1600Mhz NETWORK: ALFA AWUS036H additional ...
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2answers
43 views

What should I basically expect from access to an OpenVZ based VPS? [closed]

I'm going to buy access to an OpenVZ based VPS for the first time. I want to run common software, like apache, irc server, znc, a mail server etc. I'd like to get an idea of how the system will be ...
2
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1answer
561 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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1answer
113 views

How to start a virtual machine filled with qemu-nbd?

I migrated a Windows OS (entire disk) to a virtual machine on another host (Debian with qemu and kvm). I used Selfimage to export the disk. On the host, first of all, I created an empty virtual ...
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1answer
49 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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3answers
366 views

How to use VNC for gaming?

I was just wondering if it's possible to set up a windows 7 VPS/VNC server to be used for gaming on my local network. I have a macbook pro as my main computer, it doesn't quite have the horsepower ...
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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 ...
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1answer
108 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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1answer
20 views

where to put some script to run before VM Suspend?

I have run one shell script before the vm suspend. How to do this? Where to put this shell script so that it will run before the VM suspend .
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2answers
3k views

Fast X for LXC guest on localhost?

How can I run X apps inside an LXC container efficiently? ssh -Y guest is too slow - there is no graphics acceleration with ssh -Y - everything has to travel over the virtual network with the ...
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2answers
3k views

Mouting a kvm qemu disk image with multiple partitions

I am trying to mount a KVM-qemu disk image with this command: sudo mount -o loop,offset=32256 centos6.img /mnt/centos6. But it shows this error: you must specify filesystem type. As I have more ...
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1answer
450 views

Can QEMU/KVM+OCFS2 be configured to punch holes in sparse image files when files are deleted in the guest?

I'm using sparse raw image files for guest VMs and OCFS2 on the host (local-only, not clustered) for the reflink feature. I understand from Googling around that OCFS2 is one of the filesystems that ...
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0answers
30 views

Virtual Machine - Using bootable Windows drive as a client

I am trying to work out a solution that allows me to use a Windows client VM as a gaming environment that I can package as a resalable solution (I own a computer store). So far, it has been extremely ...
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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
807 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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1answer
100 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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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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2answers
977 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
102 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
135 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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285 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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2answers
139 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
488 views

Can libvirt check if virtual machine is fully booted? Can another tool?

I currently have small VM to do certain tests (it has multiple benefits - like testing on another distribution, Fedora 15, as well as running make distcheck without the problem of polluting /). ...
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88 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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1answer
602 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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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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3answers
63 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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2answers
319 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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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
472 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
843 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
201 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
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 ...
3
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1answer
276 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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0answers
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
237 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
786 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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2answers
471 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
723 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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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 ...
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4answers
2k views

Lightweight isolated linux environment

I want an isolated (guest) Linux environment on my computer that I can mess up without worrying about the host. E.g. install a lot of stuff from source without package management, pollute environment ...
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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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1answer
2k 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 ...