Questions about the Kernel-based Virtual Machine, an open source virtualization infrastructure to use the Linux kernel as a hypervisor.

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2
votes
2answers
6k views

Update Qemu on Ubuntu 12.04

Currently Ubuntu 12.04 comes with Qemu 1.0, I would like to update this to a newer version (1.5/1.6) to achieve maximum performance. However there doesn't seem to be an apt package for versions > 1.0 ...
0
votes
2answers
258 views

Why physical host nic can't be used in KVM

Why bridged networking is required for guest vm's in KVM ? Why we can't use the host nic to provide networking for guests.
1
vote
0answers
596 views

Can't ping KVM guest from another computer

I've set up several KVM guest OSs on my Thinkpad laptop. These guests are all on the 192.168.122.0/24 subnet, while the host OS are in the subnet 192.168.1.0/24 together with another laptop(Dell) of ...
3
votes
2answers
15k views

Networking stop/waiting error

I wanted to set up a bridge connection for my VMs (I am using KVM). I modified my etc/network/interfaces file and its contents are: auto lo iface lo inet loopback auto br0 iface br0 inet dhcp ...
9
votes
3answers
22k views

virt-manager can't connect to libvirt

I'm running Ubuntu 12.04.2 32 bits. The error doesn't show up if I start gksudo virt-manager. libvirt-bin is installed. I don't know how to check for the daemon. I am a member of libvirtd. ...
4
votes
1answer
1k views

KVM or QEMU_KVM or QEMU_SYSTEM_x86_64 on Ubuntu 13.04

I have a clean fresh updated install of 13.04 server with no graphical display just CLI. I want to run a couple of Windows and Linux guests so did some research and it looked like KVM was the way to ...
0
votes
1answer
64 views

Virtualization unbuntu guest [duplicate]

I want to install ubuntu on my laptop (i7 ivy bridge 32GB mem) and run a one or two ubuntu guests. Is there a step by step guide to help me do this ?
0
votes
1answer
662 views

Can we get Xenserver VMs provisioned by MAAS?

currently i am using KVM, and KVM vms can be managed by MAAS but i am wondering, is it possible that Xenserver VMs will also work?
1
vote
1answer
1k views

MAC OS X virtualization with KVM on the mac mini : seabios error

Since I'm a legal owner of the first generation of Mac Mini with a regular Snow Leopard license,I'm trying to follow this tutorial with the goal to virtualize Mac Os X with KVM on the second part of ...
3
votes
1answer
490 views

Ceph Openstack HA installation with maas and juju but partially on physical servers and few on virtual machines

I am planning to deploy OpenStackHA which 28 servers, which is quit a lot for me. So i am thinking to put up few of roles like rabbitmq, mysql, cloud controller, horizon on virtual machines on KVM ...
0
votes
0answers
18 views

ubuntu 12.04 server vm in kvm [duplicate]

When I install a ubuntu server VM on my KVM machine it appears to install fine. However after initial reboot, I am presented with the normal login screen. After I put in my credentials and ...
0
votes
1answer
610 views

After installing/removing Xen, can't use KVM

I'm evaluating different virtualization solutions. I decided to go with KVM over Xen. Unfortunately, now I can't create any KVM virtual machines via libvirt. jonathanfisher@blockparty ...
2
votes
0answers
113 views

Creating a user called 'root'

I am creating Virtual Machines using the ubuntu-vm-builder. The syntax goes something like this: ubuntu-vm-builder kvm precise \ --domain newvm \ --dest ...
1
vote
0answers
540 views

Build Ubuntu VM using mirror

In kvm, using virt-install I can create centos images using this parameter in my virt install command. -l http://mirror.umd.edu/centos/6/os/x86_64/ Starting install... Retrieving file .treeinfo... ...
1
vote
2answers
1k views

I can't add “<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>”

ubuntu 13.04 qemu$ virsh version Compiled against library: libvirt 1.0.2 Using library: libvirt 1.0.2 Using API: QEMU 1.0.2 Running hypervisor: QEMU 1.4.0 i want to use "Pass-through of arbitrary ...
2
votes
1answer
5k views

How to make LTSP log into the Windows 7 VM

I have managed to install Ubuntu server and Mythbuntu and a remote front-end. Now I think it could be nice to integrate my Windows machine with the server and use Linux Terminal Server Project (LTSP) ...
1
vote
1answer
286 views

12.04 Resolution Changes on Lock + KVM

I'm running Ubuntu 12.04 and using a monitor that I share with a Windows laptop via a KVM. When I login to Ubuntu my resolution is 1900x1200, but when I use the KVM to toggle over to my laptop and ...
0
votes
1answer
6k views

How to create images from iso for KVM?

Hi all :) I want to create a KVM image from an existing iso file (for glance on OpenStack), but i didn't find how to do it. Can you help me pleaaase ?
15
votes
2answers
12k views

How to configure MAAS to be able to boot virtual machines

I am running a virtual (kvm) MAAS/juju setup where most of the MAAS nodes (including MAAS master) are virtual, but some are also physical nodes. The physical Dell 1950 nodes configures automatically ...
1
vote
1answer
2k views

KVM/virt-manager fails to find/load ROMs

I'm trying to create a Windows 7 KVM guest on Ubuntu 12.04 using virt-manager. After filling in the various config options, when it goes to begin installation,I get an error box saying: Unable ...
8
votes
1answer
26k views

How to share a folder between KVM host and guest using virt-manager?

For some time now, I've been using virt-manager to manage my virtual machines. When I want to copy a file from the host to the vm, I have been using scp to copy via ssh over the network. This is kind ...
7
votes
2answers
4k views

Ubuntu inside virtual machine: ntpd or ntpdate or ??? to avoid clock drift

Problem: ntpd, when installed on a virtual machine running Ubuntu (I've had this on hosts with a variety of hypervisors such as KVM and VMware ESX) seem to be prone to severe clock drift. I haven't ...
0
votes
0answers
285 views

Execute BASH script on shutdown [duplicate]

I have a KVM switch (Trendnet TK 409) that helps me switch between my Ubuntu laptop and Linux computer. The switch use a hotkey for switching (numlock+numlock). Unfortunatly, that only works on ...
1
vote
1answer
15k views

Unable to connect to libvirt on Virtual Machine Manager?

I'm trying to install a Windows 8 VM using KVM and the Virtual Machine Manager GUI. Upon installing KVM and VMM, and starting VMM I get the error Unable to connect to libvirt. Verify that: - The ...
3
votes
1answer
6k views

kvm error in syslog says cpu0 unhandled rdmsr

I have a server that hosts about 20 KVM guest machines. It's syslog is, at times, flooded with messages like these: 00:17:36 vhost-server kernel: [ 157.835078] kvm: 3138: cpu0 unhandled rdmsr: ...
2
votes
2answers
4k views

Virtualization on Ubuntu 12.04 LTS

We plan to introduce virtualization on our 64bit Ubuntu 12.04 LTS server so that we can run, in different VMs, a file server for our staff and some development machines for our IT team (code ...
12
votes
2answers
7k views

Will `sudo reboot` on KVM host gracefully poweroff guest VMs?

Currently I manually poweroff each KVM guest before rebooting the host. However, this is getting old and now I am up to about 20 guest machines. Can I trust Ubuntu Server 12.04 to do the Right Thing ...
1
vote
1answer
2k views

Unable to migrate guest: Unsafe migration: Migration may lead to data corruption if disks use cache != none

I tried to migrate the virtual machine using virt-manager but I am getting the error as "Unable to migrate guest: Unsafe migration: Migration may lead to data corruption if disks use cache != none"
1
vote
2answers
1k views

Limitations of Ubuntu Cloud Infrastructure with respect to OS?

I am setting up an Openstack cloud based on MAAS and Juju. Once I have this cloud ready then is it possible to Run different operating systems on this cloud or its limited to Ubuntu OS only. Remember ...
1
vote
3answers
5k views

How to PXE boot a virtual machine from another virtual machine which are in same virtual network?

I am doing following tutorial: SecurityTeam/TestingMAAS But I cannot get out from 'Commissioning' state of my virtual MaaS nodes to 'Ready' state. Following image shows my current architecture: ...
22
votes
4answers
51k views

get rid of kvm: disabled by bios

I'm getting a message: kvm:disabled by bios after upgrading my kernel to 3.8.x. I've never installed kvm package.neither I can enable virtualization from my bios, because of a bios bug. I wish I ...
6
votes
2answers
11k views

Qemu KVM VNC Support

Do I need to install a special package to get the VNC support ? I installed: sudo apt-get install kvm qemu-kvm qemu-kvm-extras Everything works fine, I only get no VNC server up and running, ...
6
votes
2answers
1k views

Creating multiple interfaces on OpenStack Instances

I'm able to have OpenStack up and running with no issues and I'm loving it, however, I'm trying to create extra interfaces on one of my instances and I read under openstack documentation that is ...
2
votes
2answers
1k views

Can I run KVM virtual servers on Desktop version

I have installed a 64v ubuntu desktop. Is it safe to run any production server in a KVM? PC = i5 vt enabled, 8gig memory 1g hard drive HOST = Ubuntu Desktop 64 bit. Guest(s) = Ubuntu Server ...
6
votes
1answer
1k views

Is it possible to make OpenStack work with MaaS without involving Juju?

I have to machines, {machine-A: will be used as my Master MAAS server with OpenStack} and {machine-B [Quad Core/16GB RAM/8x HDD]: will be running a KVM where all my nodes will run on} Purpose I want ...
1
vote
1answer
2k views

Access/mount the partitions inside an LVM2-based disk of a shut-down KVM guest?

On the KVM host how can I mount the volumes on the disk of a KVM guest that has been shut down, if the disk was configured to be an LVM2-based volume? The KVM guest was installed using the normal ...
0
votes
1answer
443 views

virtualization, guest Network settings error

I have the following situation, I have a virtualization environment, the host is Ubuntu Host information: uname -a Linux asic 2.6.32-38-generic #83-Ubuntu SMP Wed Jan 4 11:12:07 UTC 2012 x86_64 ...
1
vote
1answer
1k views

linux KVM guests network performance is slower than host

i have a KVM linux based virtual machines, as the network performance of the host is running perfect with 1GB/s(in internal network) and using iperf tools it show that the network is running perfect ...
1
vote
2answers
1k views

QEMU hardware error 0x80000021

I'm trying to run Hiren's BootCD on QEMU but it throws a hardware error 0x80000021 on a Core 2 Duo, maybe there is some parameter missing to fix that. $ kvm --version QEMU emulator version 1.0 ...
0
votes
1answer
2k views

How Can I add two Bridged Interfaces on seperate LANS into KVM?

I Currently Have a Running server with multiple KVMs running different Servers within each, now I would like to add another separate interface to serve another group of KVMs on the same server. There ...
9
votes
2answers
6k views

How do I configure spice with KVM?

I'm running Ubuntu 12.10 and I have installed KVM. Trying to install / configure spice but not having any luck finding sources that work. Has anyone done this yet?
1
vote
1answer
402 views

Dual-use guest for LXC and KVM?

Would it be possible to install (and maintain by simple means, such as apt-get dist-upgrade) a "dual-use" setup? I.e. install an guest instance in a way which allows me to run it either as LXC or as ...
1
vote
0answers
107 views

What facets should I consider when deciding which guest to jail in (“full”) KVM and which in LXC?

Currently I am migrating to a new server. The old one ran 10.04 as host system and a few more 10.04 and Debian 6 as KVM guests. This was alright, because the processor had support for virtualization. ...
19
votes
3answers
63k views

What is the virbr0 interface used for?

virbr0 Link encap:Ethernet HWaddr a2:17:ea:e3:47:7e inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX ...
5
votes
1answer
456 views

How to create and export a vmware image using vmbuilder

I've been using vmbuilder to build kvm images as such: vmbuilder kvm ubuntu \ -v \ --suite=precise \ --libvirt=qemu:///system \ --arch=amd64 \ --cpus=2 \ --mem=1024 \ ...
2
votes
2answers
749 views

KVM - Guest does not recognize second NIC

I have a server running Proxmox (a virtualization platform), and created a KVM virtual machine with Ubuntu Server 12.10. After configuring the network, everything works fine, but if I add a second ...
0
votes
1answer
493 views

Ubuntu Cloud UEC 12.04 amd64 image has an invalid locale

Following the tutorial in https://help.ubuntu.com/community/UEC/Images#DownloadUECImages I was able to execute the Ubuntu 12.04 Cloud Image (amd64) in my computer ...
3
votes
3answers
6k views

does KVM has the same tool like vmware tools?

VMWARE has vmtools to enhance VM performance. Does KVM has the same tool to enhance its VM? If so, how to install such tools? thanks for any input!
1
vote
1answer
563 views

udev to ignore disk partition mapping?

is it possible to disable partition mapping on specific SATA disk? I'm using ,say "sdb", disk for DRBD replication where KVM VM is installed directly. Because of that, /dev/sdb got partitions and ...
2
votes
1answer
1k views

Kvm: 'kvmvapic.bin': No such file or directory

I'm trying to set up virtual machines with kvm and spice. Every time I start a virtual machine it outputs an error and runs extremely slow. max@TuxServer:~$ kvm-spice -hda vdisk.img -cdrom ...