KVM is the Kernel Virtual Machine, a virtualization hypervisor built into the Linux kernel.

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Nested KVM - KVM-Guest unable to get DHCP address

Morning all I'm currently trying to set-up a Nested CentOS 7.0 KVM host inside a vSphere ESX 5.1.0 hypervisor. I've been following ...
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4answers
2k views

How do I send a shutdown event to a QEMU guest (OpenBSD)?

I'm using virtualisation solely to install OpenBSD onto the bare hardware, and during the installation, the redirection to the serial port didn't get configured, so, I ended up with the system ...
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5answers
10k views

How to improve Windows perfomance when running inside KVM

I use Ubuntu 12.04 64-bit and KVM, my CPU is Core i5 3.3 GHz and I have 8 GB of DDR3 RAM. I run Windows 7 in KVM and it's extremely slow. My co-worker use Debian on the same PC configuration and can ...
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3answers
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KVM - Which Web Based management to use?

I would like to became an Expert of managing KVM on debian squeeze. I still use virt-manager. Yes, it is easy and quiet safe and quick for me. I tried a lot of web based management UI and non of ...
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1answer
29 views

How to migrate from Proxmox to VMWare?

I am wondering how it is possible to migrate a full hardware VM in Proxmox (qemu) to a full hardware VM in VMWare (vmdk). I have been searching all over the place, and it seems almost impossible to ...
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persistent network interface naming and kvm

I wonder why my network interface is still named eth0 in my kvm guests. udevadm just outputs # udevadm test-builtin net_id /sys/class/net/eth0 2> /dev/null ID_NET_NAME_MAC=enxc2184ae7ab3f I ...
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1answer
368 views

Proxmox Master Node crashes

I've inadvertently discovered a Proxmox bug. I run a personal cluster of 4 nodes (a technology lab for giggles and gags). Each node has a Dell Perc 5i and 4 HDDs in RAID 10. The standard Proxmox ...
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1answer
762 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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KVM guest as default gateway for bridged network

I currently have two vm's both on kvm (virt-manager), both running on separate virtual interfaces (virbr0 and virbr1). The IP of virbr0 is 192.168.122.0; the IP of virbr1 is 192.168.123.0. Both VMs ...
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1answer
42 views

Gentoo virt-manager on system without GNOME cannot connect to libvirtd due to polkit throwing a missing file error

I am running Gentoo Linux for AMD64 using kernel 3.12.21 AMD64 on an HP Pavilion Touch 14-N009LA with an AMD A8-4555M CPU. My desktop environment is KDE 4.12.5. I have installed KVM, libvirtd, polkit ...
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18 views

Error Restoring Virtual Machine

I've gotten an error restoring a virtual machine. How should I resolve / troubleshoot this error: Error restoring domain: internal error Device 001:004 is already in use
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1answer
35 views

Run AVD and VirtualBox at the same time

I'm developing for Android so I have the Android SDK installed and in it the program that runs virtual machine. Also, from the same reason, I'm running a oracle virtual box to host myself a redmine ...
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1answer
91 views

KVM reports strange CPU usage peaks (bash infinite recursion)

On a KVM machine running Fedora 20 I ran ulimit -s unlimited (this removes limit on stack size) and an experimental torturing testing script. All this script does is just infinite recursion: ...
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2answers
32 views

how to access the running VMs?

A colleague of a friend of mine established a voluntary project for a gaming union. But the problem now is, that the person is unavailable and I don´t know how I should access the running VMs. I spent ...
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How to get pass a localisation issue when setting up a maven project?

I'm trying to install ovirt on my mint laptop. Installing oVirt on a debian distribution is expirimental and there is little knowledge about troubleshooting on the web. However, I have found the ...
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2answers
7k views

Use virt-manager to share files between Linux host and Windows guest?

Is it possible to use "Filesystem Passthrough" virtual hardware option inside virt-manager to share a folder on my Linux host with my Windows guest? I found some tutorials for how to do this with a ...
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1answer
71 views

How to create KVM guest with SPICE graphics but TLS disabled using virt-install?

I am using virt-install (see below) to create a guest. All seems fine up to the point where it complains about auto-allocation of the SPICE TLS port. Here's what I am running and the full output: # ...
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1answer
421 views

Configuring bridge network in kvm (debian wheezy 7.2)

I am desperately trying to run untangle 10 as a guest in kvm. My host system is debian 7.2 My problem is that I am unable to configure bridges/(virtual)NICS which are successfully identified by ...
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12 views

Need help setting up networking for KVM on Gentoo with exit to wifi adaṕter

I am running Gentoo Linux on an AMD64 laptop, and I am having an extremely hard time setting up host networking on KVM. I alreay have KVM, libvirtd, virt-manager, the kernel modules required to get ...
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1answer
33 views

How to check if virtio storage access is in use?

How to check if virtio storage access virtio_blk really is in use or an eventually existing fallback driver? Existing documentation doesn't answer it: ...
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1answer
305 views

KVM to Ovirt VM migration

I installed ovirt on a machine that was already hosting KVM virtual machines. I am now trying to migrate those VMs over to RHEV format, but I am receiving SASL authentication errors using virt-v2v. I ...
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71 views

How to fix “cannot retrieve repository metadata” when installing CentOS 6.5 from Kickstart over FTP?

I am pulling my hair out trying to fix this. I am attempting to install CentOS 6.5 over an FTP server on KVM from the physical host. I have vsftpd installed, selinux set to permissive, and iptables ...
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1answer
435 views

Enable 9p filesystem type in Centos 6 virtual guest?

My question is linked to this one : http://stackoverflow.com/questions/17880460/mounting-shared-folder-in-kvm-vm-error-mount-unknown-filesystem-type-9p (but can't comment it) I have apparently the ...
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Need commands to fetch Guest VM OS version from Xen and KVM

I m looking for the commands that can be executed to fetch the OS Version of the VMs running on the below Hypervisors. Xen (Not the citrix Xen server, but the Xen Sever hosted on a ubuntu Machine) ...
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579 views

KVM Domain not creating

While I am trying to create a new KVM Machine , I am getting the following error , Unable to complete install: 'Domain has not existed. You should be able to find more information in the logs' ...
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1answer
102 views

Poorly performing java application vs poorly performing server

This is a very generic question, but it has been coming up more and more often for me. I would like to try and determine an appropriate course of action for this generic case, as I think it could ...
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8k views

Should LVM partitions be used in virtual machine images?

Should LVM be used for the partitions when creating VM images (e.g., KVM images)? It seems like it adds complexity if you want to, say, mount a qcow2 image in the host if the image has LVM partitions. ...
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1answer
128 views

Solaris 10 installation on KVM constantly reboot

Successfully installed Solaris 10 sparc on KVM. However when I restarted the VM it doesn't go to login screen but just constantly reboots. I've read different documents link1 link2 link3 but none of ...
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1answer
39 views

Sharing partitions in qemu

Apart from networking and partition sharing I've made qemu work pretty much like I want it to. I've got a bit of a special setup, I need to pass through /dev/sda, /dev/sda1 and /dev/sda2. (Is it ...
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2answers
62 views

get CPU usage of a VM (linux) using java

Is there an API for Java in getting the CPU usage of a VM in KVM? I want to know how I could get the CPU usage of a guest (from the host's perspective) using Java. Also, does anybody know where I ...
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21 views

Pxe Insallation

I Want Document For pxe boot server install in kvm on ubuntu 12.04. I am configuration but got that error: Jul 4 15:36:57 ubuntu dhclient: No DHCPOFFERS received. Jul 4 15:36:57 ubuntu dhclient: ...
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56 views

How not to write kernel warnings into /var/log/messages?

I keep getting these log warnings due to a bug in kvm. Jun 30 19:12:31 server kernel: kvm: 28882: cpu0 ignored rdmsr: 0x345 Jun 30 21:12:31 server kernel: kvm: 31191: cpu0 ignored rdmsr: 0x345 Jun ...
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1answer
74 views

kvm killed by oomkiller

kvm version: QEMU emulator version 1.1.2 (qemu-kvm-1.1.2+dfsg-6+deb7u3, Debian), Copyright (c) 2003-2008 Fabrice Bellard libvirtd version: libvirtd (libvirt) 0.9.12.3 debian version: 7.5 I'm running ...
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1answer
68 views

virt-install cpu0 unhandled rdmsr

I'm trying to install a guest VM using KVM on a partition. I use virt-install. I call the following command: virt-install -n centos --ram=1536 --vcpus=1 ...
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115 views

share host folder with Vritual machine guest problem (centos 6.5)

I have centos 6.5 installed kvm. Then I created a virtual machine and tried to share the host folder (e.g. /mnt) with virtual machine using 9p_virtio. (follow this guide: ...
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complete KVM / libvirt breakdown after OS upgrade (openSUSE)

I have upgraded two E-350 systems which have been running VMs (one of the systems only Linux VMs, the other one Windows VMs) to openSUSE 13.1 (i.e kernel 3.11.10, kvm-1.6.0, libvirt-1.1.2). After a ...
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0answers
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libvirtd (KVM) doesn't reload the kernel when I reboot the machine

I'm using Direct kernel boot with libvirtd and KVM as backend. But, every time I recompiled the kernel, and reboot inside the VM, the changes doesn't reflect until I do a Force off and Power on ...
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2answers
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KVM and Swap space

suppose the following scenario: a host with 2 GiB runs a few guests using KVM. Each guest does usually not need much memory, they are given 256 MiB each and run services that mostly twiddle their ...
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1answer
100 views

virsh, how to list autostart domains?

In virsh how do I see which domains are marked as autostart? virsh list does not show which domains are marked as autostart.
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3answers
3k views

Sharing an X server (session) across computers

I have 2 computers (both running linux) and I'm currently using synergy to use them. This is great, but now I'm wondering, is there any way (is it possible? being worked on? tried and failed? ...
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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
421 views

How to extend an ext3 partition over LVM inside a file (virtual machine)?

I need to extend the root partition of a virtual machine (VM) using LVM (Logical Volume Manager). I can afford a few minutes of downtime so a VM shutdown/reboot is fine. The virtual hard disk is in ...
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1answer
86 views

Nested virtualization: run RHEVH inside KVM

I have laptop with 16GB RAM, trying to install Red Hat Enterprise Virtualization Hypervizor 3.3 on Virtual Machine Manager (KVM) based Guest, but it gives error "Virtualization Hardware not found" ? ...
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2answers
75 views

RHEV cannot start inside Oracle VirtualBox

While installing RHEV Hypervisor 3.3 on Oracle VirtualBox I am getting following message: Failed to open a session for the virtual machine RhevH1 VT-x is used by another hypervisor. ...
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1answer
170 views

X and xdotool in LXC instead of KVM

So far I am using various xautomation/xdotool scripts in a KVM virtual machine (linux guest) in order to let them do their work and let me work uninterruptedly. I am using a VirtIO disk, but still the ...
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SOLVED: KVM Can't Read Keymap File on Ubuntu 14.04

When I try to create a KVM domain with virt-install on Ubuntu 14.04, I get the following message: ERROR internal error: process exited while connecting to monitor: Could not read keymap file: ...
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1answer
66 views

How to migrate an IDE VM to a virtio VM?

On my KMS host I installed a windows server 2012 guest a few months ago. The VM runs raw using IDE (HDD). I would like to improve the performance by using virtio. I performed these actions: ...
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181 views

Cannot Start KVM VM Because Missing BIOS

Whenever I attempt to start a KVM VM on Ubuntu 14.04 with the "kvm" command, I get the following error: qemu: could not load PC BIOS 'bios-256k.bin' I have searched for this file and found it ...
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1answer
46 views

Capture information of system-call

I have a QEMU-KVM hypervisor (ubuntu) with several VMs. What I want to do is capture all information of VMs system call to hypervisor (without any intervention to VM whatsoever) in real time within a ...
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1answer
785 views

CentOS 6.5 + KVM (Virtual Machine Manager) create shortcut - Laucher for Guest Machine

How can I create a Launcher on my desktop for guests machines inside of KVM on desktop of CentOS 6.5?