Linux Kernel Virtual Machine is a virtualization system (VM)

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VPN across three VPS's

I have three servers running on virtual machines. The gateway is 192.168.0.1, and the hosts are the numbers 2,3 and 4. The first host is serving a PHP script which outputs the visitor IP ...
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891 views

Copy/paste issue in Ubuntu virtual machine (QEMU-KVM) with Awesome window manager

I have Ubuntu 12.10 virtual machine running in QEMU-KVM. Copy/paste between host and vm works fine when using Unity as window manager but not while using Awesome. What is the difference between ...
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Virtual machines using wrong IP addresses

I have a host computer (A), running three virtual machines: X,Y and Z. They're under a NAT layer, in which the Host A is the gateway (192.168.0.1/16), and the VM's are respectively 192.168.0.2 (X), ...
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1k views

Wireless bridge on KVM virtual machine

I have a VM host (KVM) that's connected to a wireless router. I'd like the virtual guests to be in the same broadcast domain as the host; i.e, receive their IP from the router's DHCP. (=Layer 2 ...
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Why gnome-terminal does not show prompt in vnc running on a guest in kvm?

I use KVM to host vm (ubuntu). Then I started vnc4server on the vm. The content of ~/.vnc/xstartup is shown below. gnome-terminal in vnc does not show the prompt and doesn't accept any keyboard ...
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kvm cpu0 disabled perfctr wrmsr - hangs

I initially asked this question on StackOverflow, but it was marked as off-topic and said I might get help here.. so here it is ============== I am currently running Centos 6.5, and tried to follow ...
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How to access CD-ROM inside kvm guest machine?

I am using KVM in Scientific Linux 6.4 Inside that KVM again I installed Scientific Linux 6.4 as a guest. Now I want to access CD-ROM from that guest machine. In the command prompt it not showing any ...
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Implementing PCI-Passthrough with Linux-KVM on Debian

I am attempting to use PCI-Passthrough to attach an old video card (Radeon 4770) to a virtual machine. I am using Linux-KVM to run my virtual machines on a Debian Linux (Wheezy, 3.2.0-4-amd64) host. ...
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215 views

Extend partition in KVM

I want to extend my qcow2 image file. We have installed a windows machine on it. Below are the steps we performed. virt-filesystems --long -h --all -a windows-7-64.qcow2 truncate -s ...
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How to set up a VM gateway/DHCP and virtual network in CentOS KVM?

Today I have a working setup where the physical host runs W2k3. It has 2 physical NIC's. It runs Vmware server and I have a ClearOS VM installed acting as a FW/DHCP/DNS for both the host and all the ...
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95 views

Unknown OS hostname and product in virt-manager

I'm using libvirt on a Fedora 19 host, running various Linux guests with QEMU and KVM hypervisors. Using the virt-manager GUI, when I look at the guest Overview screen, in the Operating System ...
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372 views

How can I write a Windows (NTFS) .img file to a partition and add it to grub?

I'm trying some crazy stuff here. First, I had a VirtualBox machine with Windows XP installed, using .vdi format. Then I exported the image to a OVA, extracted the .vmdk and converted it to a raw .img ...
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341 views

kvm debian squeeze ERROR: internal error Child process

Having issues creating virtual machines in Debian Squeeze. The host is a Dell Poweredge with Xeon processor, running Debian Squeeze - kernel 3.2.0-4-amd64 When I try to create the VM through ...
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159 views

Is there a GUI tool or API for remote KVM management for headless machines

I like virt-manager but I have alot of headless hypervisor. I'm curious if there is a GUI tool that is libvirt based that will allow me to connect to the hypervisors and pullup/monitor/manage VM ...
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2answers
5k views

How to exit a “virsh console” connection?

Is there any special characters involved? I want to be able to open a console connection in my application and exit upon completion of a task
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297 views

Networking Issue with libvirt (kvm)

I'm running a desktop class computer tower with Ubuntu Server 13.04 (64-bit) installed. The server is configured with libvirt, and I use virt-manager to control and configure the VMs as well as ...
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35 views

Virtual Machine stalls after migration

I have Ubuntu VMs running on an Ubuntu server Host. When moving a VM from one host to the other using virsh migrate --live some of the VMs stall out. The only way to get them back is to kill them and ...
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pulseaudio, in a KVM virtual machine (as root) and your desktop (not root) playing audio at the same time?

How do you get pulseaudio to play sound in a KVM virtual machine (running as root) and your desktop apps (not running as root) at the same time? It seems that by default, it will only play sound for ...
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How can I use a separate partition to store the VM images in KVM?

I have the following setup on my host [root@fake ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 32G 30G 785M 98% / tmpfs 12G 76K 12G ...
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521 views

Nested kvm virtualization not working

I am trying to run a Ubuntu VM on Fedora 18 host. Now, my processor supports VT, so I have kvm installed and it's working. I launched the machine (Ubuntu 12.04 LTS) and installed kvm inside it. But ...
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902 views

vagrant fails to create box with libvirt

I am trying to setup a box with vagrant and libvirt with the following Vagrantfile Vagrant.configure("2") do |config| config.vm.define :test_vm do |test_vm| test_vm.vm.box = "test" ...
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How to improve graphical performance of Windows 8 on KVM?

I installed Windows 8 on KVM. But its graphical performance is less than desirable. First I tried to use SPICE protocol to solve this problem, but it doesn't support Windows 8. Next I tried to use ...
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3k views

Error while creating a VM using KVM

I am trying to set up a VM on my Ubuntu 13.04 Desktop and it's giving me error when I try to start the VM. The error states: virsh # start vm1 error: Failed to start domain vm1 error: internal error ...
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How to ignore a USB device in udev

I want to pass a USB device (to be precise: a smart card reader) to a KVM virtual machine, and therefore have to prohibit that it is claimed by any driver on the host machine. I tried to write a udev ...
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320 views

Boot OpenSuSE installation in QEmu-KVM using QEmu-KVM as the bootloader

I am trying to pass kernel parameters to a virtual OpenSuSE installation without typing them on a boot prompt, using the ability of KVM to load the kernel directly. First, I mount the installation ...
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532 views

oVirt requirements and other web based mgmt tools for kvm

I'm evaluating different virtualization management tools for KVM virtualization. I've a kvm ready server with 32GB ram. I'm looking for web based management tools where different people can ...
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VM program which stores directly on HDD

I'm looking for a VM program like VMware, LXC, or KVM, which stores the whole hard drive of the guest OS on the host HDD. LXC for instance does this, it stores in ...
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359 views

What VNC clients support qemu's audio extension?

I've read that QEMU implements an extension for providing audio over a VNC connection Unfortunately despite doing a lot of web searches and even installing some different VNC clients and ...
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103 views

Permanently detach device

I'm setting up a vm box and I've enabled IOMMU. Works great, except I get PTE Read access is not set errors flooding my dmesg. In particular it is for one device, a USB 1.1 controller, that just ...
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417 views

freebsd guest works from commandline `kvm`, hangs before boot inside virt-manager

I have a FreeBSD-7 guest (in a qcow2 disk image) which works just fine when I start it from the commandline with # kvm -drive file=freebsd7.disk But when started from the virt-manager GUI, it gets ...
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Running the same Windows both in KVM and physical

I have kind of an advanced question for you, I would like to install Windows on my hard drive (which is GPT formatted) but I would like to be also able to run it in KVM. To clarify, the same Windows ...
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Host-only-like interface in KVM

I just migrated from Virtualbox to KVM, everything is very good. But I've a little bit confused in network adapter type. In Virtualbox I have host-only adapter, which are virtual nic (no bridge), and ...
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Is the ubuntu a VM instance if I choose to install it alongside with windows via the wubi installer?

I recently installed a Ubuntu 12.10 64bit using wubi installer under Windows 8. Every time I start my machine, it will go to the Windows 8 bootloader first and then I can choose which operating system ...
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How do I prevent virt-manager from asking for the root password?

When starting virt-manager, it asks for the root password. It looks like virt-manager causes the libvirtd daemon to run pkcheck with a couple of arguments, which then shows this authentication ...
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451 views

QEMU: How to find bottleneck in my virtual machine?

I am running an ubuntu virtual-machine on a 12.04 ubuntu server. Unfortunately the machine is extremly slow (just htop consumes 15%), even though having 8 cores etc. Do you know a way to find the ...
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centos 6.2 VPS system encryption performance

My webapp database handles some user profile data (name, birthday, work and education history, email, facebook id, and also my facebook app secret that would provide any holder access to any facebook ...
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343 views

KVM USB Passthrough and Zydas usb wireless adapter: device or resource busy

i'm tring to setup a kernel testing virtualmachine for a 80211 module. i start my machine with this command: kvm -m 512 -net nic -net vde -usb -usbdevice host:0ace:1215 ktesting.img i set up a ...
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405 views

KVM guest displaying on an attatched monitor

I have a Debian Squeeze KVM hypervisor running a server guest VM and a Desktop guest OS VM. Is it possible for the Desktop guest to send it's display to monitor directly attatched to the computer? An ...
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845 views

KVM machine does not start ssh, network is started, used to work

have been searching an pulling my hear out for the last 6 hours. I have a virtual machine that has been running fine for the last six months. I was happy ssh'ing into it and it was running a database ...
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1answer
860 views

How to set up virtual windows so it shares graphic card via IOMMU?

I'd like to continue using Linux as my desktop system. But from time to time I'd like to do some gaming. I know that I can use Wine and PlayOnLinux stuff, but it doesn't always work. I also know, that ...
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4k views

Prevent radeon driver from attaching to specific PCI devices?

I have two Radeon cards in this machine, a 6570 and a 6950: lspci | grep VGA: 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Turks [Radeon HD 6570] 02:00.0 VGA compatible ...
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libvirt/9p/kvm mount in fstab fails to mount at boot time

I am trying to mount a shared folder using qemu-kvm/9p and it fails to work if I add it to the fstab file. I get an error at boot that the device cannot be mounted, yet after start if I run "mount -a" ...
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Virtual Machine Got Frozen on start of installing FreeBSD, on CentOS6.3 KVM

Problem description: In the installation section, after I entered the virt-install command with proper arguments(shown below) to build the virtual hardware configuration, and connected to the vm ...
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Guest slow after being idle for awhile

I've been playing with ESXi and Linux KVM to try to find out which one best suits our needs. With both of these solutions I've run into the same situation. After a guest has been idle for some time ...
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Windows 7 Enterprise under virtualization has no networking until login

I created a Windows 7 image to run under KVM based virtualiztion, but the networking for the image will not start until I login. I'm not very familiar with Windows, but it seems as though there is ...
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2k views

KVM module not found by virtual machine manager

On ubuntu when I launch the virtual machine manager I get a warning saying that KVM is not installed. I installed it from apt-get. Ran modprobe and got: $ modprobe -l | grep kvm ...
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How to set up linux watchdog daemon with Intel 6300esb

I've been searching for this on Google for sometime now and I have yet to find proper documentation on how to connect the kernel driver for my 6300esb watchdog timer to /dev/watchdog and ensure that ...
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330 views

Reducing hard disk access of kvm

I have set up a kvm/qemu virtual machine on my home server (Ubuntu Server 12.04). My host system is installed on a small SSD but the image for the vm (virtual disk file) is saved on a classic HDD. ...
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61 views

error in qemu monitor wavcapture with virsh

I have VM running on qemu-kvm. I am managing it with libvirt and command line tool virsh. I want to record the audio output of the VM. Here is what I am trying - virsh qemu-monitor-command -hmp ...
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789 views

Convert KVM virtual machine to LXC container

I have 2 virtual machines (with Debian, using KVM) with virtual hard drives: /srv/kvm/ssh.img /srv/kvm/www.img Both have 3 partitions (/, /home, swap). I want to convert them in a RootFS usable ...