Linux Kernel Virtual Machine is a virtualization system (VM)

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ubuntu libvirt serial console requires ttyS0 restart to connect?

I'm attempting to configure serial access from my libvirt host to one of its guests. I've configured the device on the guest and started it: jsharpe@sel-app1:~$ cat /etc/init/ttyS0.conf # ttyS0 - ...
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1answer
476 views

KVM/QEMU SDL output to framebuffer

I want a KVM guest with SDL graphics on a host that does not run X. From what I've read, SDL supports output to the framebuffer, but I can't find much on the topic.
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3answers
491 views

Virtual machines with failover setup

We have three servers and our plan is to run a number of virtual machines on them in such manner, that if one of the nodes blow up, we can either quickly or seamlessly get a spare running on another ...
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3answers
5k views

Guest and host cannot see each other using linux-kvm and macvtap

I'm migrating a kvm virtual machine from an old host (both hardware and OS) to a new one. For networking, virt-manager proposed me a new option: macvtap. This looked a good alternative to setting up ...
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1answer
1k views

Virtualization: tips to speed up a Linux KVM guest

I set up an host Linux system with KVM and I installed another Linux as a guest (Debian 6). I nside the guest I launch a vncserver and I access it from the host using vncviewer. It works fine for my ...
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2answers
4k views

Find IP of VM running KVM

How can I find the IP of the VM on KVM(using Nmap)? If not,are there any functions in Libvirt to do that?
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437 views

High performance desktop virtulization / multithreading on the guest with linux 64 bit host

For over 3 years I have been trying to get similar guest performance in 64 bit windows as I have on my i7 870 at work in the tasks I do at work. My requirements are pretty taxing. I need fast CPU, ...
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1answer
73 views

Mapping KVM guest VMs to subdomains

I've just installed KVM on a Ubuntu host system and intend to install two guest VMs on it. I have a domain, e.g. example.com. How can I configure my system so that VM(a) is accessible by example.com ...
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1answer
509 views

cgroups in CentOS

I am using a KVM to manage my VMs. I would like to limit the CPU usage of a particular VM (set a cap on the VM). I was using xen all along, and was able to do this using credit scheduler. I am new to ...
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2answers
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KVM image failed to start with virsh, permission denied

My host OS is Ubuntu Server 11.04 (natty) After following the instructions detailed by Ubuntu's help, I created one KVM image using sudo ubuntu-vm-builder kvm hardy --libvirt qemu:///system The ...
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1answer
558 views

My KVM is not perform that good as announce

I am using normal PC with the following specifications: Intel Core 2 6600 @ 2.40GHz RAM: 2G Motherboard: Intel DG965RY HDD: 7200 rpm @ 250G I have enabled Intel VT in BIOS setting. I install the ...
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1answer
143 views

How to find out the max size of a image disk file created by kvm-img?

I created a VM disk image with kvm-img, but I forget what was the max size of that disk image when I created it. Currently, its size is 6.2G, I want to install some large packages in that VM, so I ...
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1answer
378 views

Cloning in KVM-Qemu

How does kvm clone the qcow2 images? I couldn't find any documentation on the internals of the cloning.
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1answer
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KVM and libvirt: How to configure a new disc device to an existing VM?

I've got an Ubuntu 9.04 server running two VM's. In /etc/libvirt/qemu/machine1.xml two disk devices are defined like this: <devices> <emulator>/usr/bin/kvm</emulator> <disk ...
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2answers
9k views

Change CD-ROM via virsh

I have a KVM virtual machine that is managed via libvirsh. Now I want to use a different ISO image inside the VM. How do I change the DVD in the virtual drive using virsh?
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1answer
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Where can I config service startup options in Ubuntu?

I'm not used to using Ubuntu or Debian as a server. I'm more accustomed to Red Hat/Fedora ways and even Gentoo (yikes). Under Red Hat installs, you can often configure most services that start from ...
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0answers
582 views

Networked Parallel Port in Linux / KVM / QEMU

What I want to use is the "-parallel" tcp or udp option from KVM / QEMU, but I don't seem to find any server for this client. I don't serve a printer but a hardware dongle. I checked ser2net, which ...
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1answer
466 views

Difference between virt-image and virt-clone

I was reading about virt-manager. However I was really confused between virt-image and virt-clone. Can anyone tell more about it or redirect me to some links that might help me. My requirement is to ...
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1answer
326 views

KVM in Ubuntu cannot trap Windows7 keyboard shortcut

I am running Windows7 as a guest OS inside KVM running in Ubuntu Desktop 10.04 Everytime I do Alt+Tab within Windows7, the shortcut is caught by Ubuntu. How can I 'trap' the shortcut to stay within ...
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4answers
535 views

Best, easy to use open source virtualization solution for Ubuntu 10.04?

I am a big fan of VMWare Workstation - it works great and is so easy to use... However, I like open source. I realize there's VirtualBox, but ideally I was looking to something to do the following: ...
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1answer
822 views

open a console on a virtual machine

I have a KVM Virtual machine running, I can see that using "ps aux | grep kvm". What I need to open a console into that VM. How do I do that?
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1answer
931 views

HASP dongle in kvm?

Is there a way to use a HASP dongle (Aladdin) in a kvm virtual machine (guest) running Windows 7 professional with Ubuntu 10.04 or 10.10 as host?
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1answer
479 views

Connect to virtual KVM machine/VNC from Xorg

I have a main Ubuntu system and a virtual Windows system, set up using QEMU/KVM. So, I can start Windows using virt-manager and connect to it using a VNC client. But what I really want to have is a ...
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1answer
112 views

is it safe to expose physical interface without ip (bridged) to the outside world?

I have a KVM on Ubuntu as a home server. My gateway is a VM with WAN interface connected to the bridge configured as auto eth1 iface eth1 inet manual auto br1 iface br1 inet manual bridge_ports ...
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1answer
528 views

Ubuntu KVM guest-only bridged network?

Configuring a bridge is not a problem KVM Networking What I can't figure out is how to disconnect host from the bridge?
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1answer
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Using virt-install to mount multiple cdrom drives/images

I would like to create a windows xp guest from the windows xp upgrade cd I have, along with one of a few full versions I have around. However, when I reach the stage in the installer where I am ...
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2answers
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Virtualized Screen Resolution

I have a 64 bit Ubuntu 9.10 workstation with two virtualized guest OSes using KVM/QEMU. Also both 64-bit. One is Fedora 12 the other is beta of Ubuntu 10.04. The problem is that I would like to use ...
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2answers
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Windows 7 amd64 guest in kvm does not have sound

my host system is gentoo amd64, guest system is Windows 7 amd64. the guest system can work, except it does not have sound. I start kvm with -soundhw ac97, QEMU_AUDIO_DRV='alsa', and after I get into ...
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2answers
1k views

GDB breakpoint problems attaching to QEMU

I have the following problem: When I connect gdb to qemu for debugging, it won't break on breakpoints. I can set breakpoints, break with ctrl+c etc. Any clues how this can be fixed? I have: $ qemu ...
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3answers
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How to buy a windows 7 VM?

I'm a Linux user and would like to have a Windows 7 Virtual Machine on KVM. Microsoft licensing confuses me and I don't want to buy a copy of Windows 7 that won't allow me to install it as a KVM VM. ...
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2answers
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Driver for Ensoniq AudioPCI ES1370 on Windows 7

KVM is a virtualisation package for running operating systems such as Windows on Linux. Windows XP works fine in this, but Windows 7 fails to recognise the sound card. According to the documentation, ...
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3answers
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How can I run an existing WinXP partition (dual boot machine) inside KVM?

I use KVM to run virtual machines on Ubuntu Jaunty and virt-manager to configure them. My machine is dual-boot, and I don't want to have to reboot for my occasional uses of Windows. So I set up a VM ...
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6answers
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Virtualbox, VMware, KVM or other for Ubuntu virtualization?

Is any one of these better than the others? What are the differences in practical terms for home use?