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

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Compile qemu-kvm, kvm - how?

I am using ubuntu 14.04 64 bits and am trying to build kvm - here is what i did according to many messages I saw on this same topic. git clone https://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git ...
6
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1answer
571 views

KVM guest performance impacted by very long virtblk disk wait times

I have several KVM guests running on Ubuntu 14.04 using libvirt. Their performance is very poor. The intermittent nature of the poor performance with an order of magnitude variability in simple ...
0
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1answer
392 views

Interfaces not created after upgrade 13.04 to 14.04

I just upgraded my server used for KVM from 13.04 to 14.04 (with 13.10 in between). Afterwards, the various sub interfaces and bridge interfaces are missing. The configuration is still present in /...
1
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1answer
1k views

kvm guest network problems

I had a server running kvm that was upgraded from ubuntu 13.10 to 14.04 and since the upgrade after a couple of hours (in some cases less) the guest machines (a mix of linux and windows, using both ...
2
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0answers
79 views

Deploy ubuntu with MAAS fails

I have a problem with the Ubuntu deploying with MAAS. I'm trying to install Ubuntu on a KVM virtual machine. The boot with pxe works, I see the login prompt during the deploying, the server connect ...
1
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2answers
4k views

Playing game emulators on a virtualized OS (Qemu/KVM)

I'm planning on assembling a machine for development testing and all kinds of software emulation. I already know what to choose in terms of hardware, and my initial idea is installing Ubuntu as the ...
0
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2answers
526 views

Hosting 12.04 guest on 14.04 server with KVM & libvirt

I've been pulling my hair out trying to get Ubuntu 12.04LTS server (64bit) working under a standard KVM/libvirt setup on Ubuntu 14.04. I can create a new virtual machine using virt-manager and run ...
4
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1answer
2k views

virsh snapshot-create-as gives “unable to execute QEMU command `transaction`”

I have an Ubuntu 12.04 Server that hosts several virtual machines. I want to make backups of these VM's using the snapshot mechanism. The purpose of these snapshots is to have a backup on an external ...
2
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0answers
938 views

Ubuntu 14.04: with bridge on wlan, no internet on kvm guests

I'm trying to be a "high-lander" sticking to KVM plus virt-manager to manage my VMs. But it's about a week I'm around trying to create a bridge that works for using with my VMs. I tried first tried ...
4
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2answers
814 views

MAAS: Unable to start “Commisioned” nodes

I am having problems while trying to start my first node using KVM (QEMU 2.0.0) and MAAS. Automatic detection worked fine, and during the commission (virtual machine window) I get errors such as: ...
2
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1answer
90 views

How can i make VM to fully cover the screen in KVM?

I installed Debian Wheezy in KVM using virtual machine manager. VM doesn't fully cover the screen, with large gaps in both sides of screen as seen in pictures below. How can i make VM to fully cover ...
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2answers
1k views

Can I set up MAAS and Juju on one machine?

Here is what I want to setup: MaaS on a single PC MaaS providing the host OS for 4 VMs (3 LXC + 1 KVM) Using Juju to deploy services on the 4 VMs (nodes on MaaS) How can I accomplish this?
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1answer
1k views

Ubuntu 14.04 LTS Windows 8 Guest macvtap setup

I have little experience with Ubuntu and new to KVM. I have successfully installed KVM and used virt-manager to add the first guest. I have 4 Ethernet ports on my server. For host server access and ...
0
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1answer
581 views

Setting up VMs on different subnets

I run a server on IP X.Y.3.7 and i want to run multiple VMs on it using libvirt. I set up a bridge device: auto eth0 iface eth0 inet manual auto br0 iface br0 inet static address X.Y.3.7 ...
0
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1answer
1k views

KVM Virtual Machine Manager: Host CPU does not provide required features: aes

I am using Ubuntu 12.04 64-bit. I am using OpenStack. The service is all working, but nova service is not working. Some got error is: hardware not supported, so I changed Processor -> Configuration -> ...
0
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1answer
389 views

compile and install modified kernel

I have made some changes to the vmx.c file of the kernel. Now I am using make menuconfig followed by make -j 5 command to compile the modified kernel(No errors just a warning..) Now I am using ...
0
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1answer
149 views

How to enable virtualization on Lenovo Z500?

I have downloaded the Kernel 3.13.6 from kernel.org and installed in the system. Updated the BIOS and then enabled the virtualization in the bios settings. Now I have used the command sudo kvm-ok ...
0
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0answers
15 views

On startup [number] kvm: disabled by bios [duplicate]

When I start ubuntu 12.04 it says [number]kvm : disabled by bios. How can I fix it? Also there is a quick black screen flash on shutdown which states unable to run [something]. It flashes too fast so ...
13
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2answers
7k views

How do I set up a KVM/NVidia Passthrough virtual machine for gaming?

I've seen a guide or two that seems to be replicated around on the internet on setting up KVM to use passthrough for Nvidia. It seems to require 2 video cards. Is it possible to do it with 1 video ...
1
vote
1answer
323 views

Create a virtual machine and connect to it command line

I'm running an Ubuntu 14.04 server, and would like it to also run another 14.04 server instance in a VM on it. (I need to use two VPNs on the same machine simultaneously) I've tried using both KVM ...
1
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1answer
331 views

Could not ping Solaris KVM Guest from another computer

I setup Solaris Guest using KVM in Ubuntu. I don't have problem pinging host (Ubuntu) to guest (Solaris) and vice versa. Also my Solaris guest can ping other computers in my network but not the other ...
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0answers
30 views

KVM image size has changed?

We had a 180GB VM image. Inside the guest VM everything is OK and hdd size is 180G. but when we look the image size on the host it is 475MB. I am afraid that if we restart, the VM wouldn't work. I ...
2
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2answers
7k views

How to share a directory between ubuntu host and windows guest with kvm?

I read several posts or articles which deal with this but all give a solution for linux guest. For example : http://www.linux-kvm.org/page/9p_virtio http://troglobit.com/blog/2013/07/05/file-system-...
0
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1answer
728 views

Ubuntu 14.04 kvm instance has low resolution

I have a kvm guest instance of Ubuntu 14.04 running with a vga type video device. I do not have a /etc/X11/xorg.conf file, I am letting X autoconfigure the video and all devices. When X comes up, the ...
3
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0answers
745 views

KVM-Guest only boots single user mode

We have a Vserver Host running on Ubuntu 12.04 with KVM/QEMU and so far guests been running fine with various OS's (Ubuntu 10.04, 12.10, Debian 6,7, CentOS 5,6). After the installation of Ubuntu 14....
0
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1answer
901 views

Guest on kvm wont detect disk even after seleting virtio drivers

Recently update to Ubuntu 14.04, and now using kvm but hit a wall. I'm trying to install a win8.1 64 bits virtual machine. I follow this tutorial, https://www.youtube.com/watch?v=fMXctyhcrfs, ...
0
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1answer
130 views

I can't create more than one virtual machine with vmbuilder

I'm testing the creation of virtual machines with Ubuntu. The first virtual machine was created with the default settings and is called ubuntu: virsh --connect qemu:///system list --all Id Name ...
1
vote
1answer
5k views

KVM Virtual Machine Manager: sharing folders not working

I've created an Ubuntu VM inside my Ubuntu using Virtual Machine Manager. I'm trying to mount a host directory in guest OS but it's not working. I used the instructions provided here: http://troglobit....
2
votes
1answer
4k views

How to list all virtual machines created using qemu-system-x86_64?

I am using qemu-system-x86_64 to boot virtual machines on kvm running on Ubuntu 12.04 64-bit desktop. I have a few VM's that are currently running. I want to get the list of all VM's booted using qemu-...
1
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1answer
255 views

Howto make “update-grub” to ignore guest volumes on a KVM Hypervisor?

I have some Ubuntus acting as a KVM Hypervisor and, every time I run "update-grub" on those servers, it takes a lot of time to finish and makes too much disk IO. I'm seeing that it tries to find ...
1
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2answers
1k views

How to use setvcpus from libvirt command line?

I'm using libvirt with KVM/QEMU. I found a great PPA, uvtool (http://s3hh.wordpress.com/2013/12/12/quickly-run-ubuntu-cloud-images-locally-using-uvtool/), that manages images and metadata in a volume ...
2
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1answer
2k views

Creating Virtual Machines using ubuntu-vm-builder

I'm currently trying to install virtual machines on my Ubuntu Server 13.10. I followed the instructions from this guide. I was able to install and check if my machine is is supported how ever when I ...
4
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1answer
138 views

How do I run a PXE server?

I'm going to run several virtual machines with KVM virtualization. In order to install guest systems over PXE protocol, I am going to run a PXE server on my host machine (I'm not doing it wrong, am I?)...
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2answers
90 views

What are virtualization and KVM?

Can anyone explain this: What is virtualization? What KVM Kernel Virtual Machine?
1
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1answer
356 views

Error while creating qcow2 file using qemu-img

When I am creating an qcow2 file using qemu-img command I am getting error as librbd.so.1 file not found. When I check for the dependencies that .so file is present in the /usr/lib folder. Can any ...
0
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1answer
490 views

how to create an empty virtual machine without os in kvm?

Can any one help me to create virtual machine in kvm hypervisor without os. Just the vm should have 8GB disk, 512 MB RAM and default NIC interface.
0
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1answer
57 views

Is it wise to run computing virtual machines on KVM?

I have a physical server with 384GB memory. My main applications are to run CPU and I/O intensive programs. I could run everything on the physical server. But I'm wondering if it is better to host a ...
5
votes
2answers
1k views

Add armhf as a suppoted architecture for guest KVM VMs (on a amd64 host)

I have an Ubuntu Server 12.04 setup with about 6 KVM VMs running. Guests are all x86 or amd64, host is a 2-socket Westmere Xeon box. Now I want to create a new guest VM but this time the guest VM ...
0
votes
1answer
43 views

Does each KVM Guest need its own ISO

Does each KVM guest require its own copy of the bootable ISO image? If I'm thinking correctly, the guest only needs to read the .iso, not lock it or anything, so multiple guests should be able to use ...
1
vote
3answers
4k views

How to completely remove virsh from Ubuntu

How to uninstall virsh from Ubuntu 13.10 server. I have already removed libvirt-bin, qemu and kvm but virsh is still running. I used following command to remove libvirt-bin. apt-get remove --purge ...
0
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2answers
572 views

/etc/network/interfaces configuration messed up

I'm trying to setup a virtualized server up with KVM on my OVH server. However, when configuring the network, I'm encountering some issues. Any help in any form is greatly appreciated! This is my ...
1
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0answers
729 views

Virtualizing Windows 7 with qemu-kvm SATA Issues

I am working on virtualizing a windows 7 image using kvm on Ubuntu 12.10 64 bit. Here are the specs for my machine: CPU: Intel i7-2860WM ,8G RAM I am using an image created with WinImage of a ...
0
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1answer
138 views

KVM and port security

In my test environment I get everything working perfectly the way I want it. Running Cloudmin KVM instances over a bridged adapter. Then when it comes time to install at the data center I hit a brick ...
1
vote
1answer
517 views

Accessing Windows 7 QEMU/KVM Virtual Machine on portable via spice from another machine

I am running Lubuntu 13.04 on a Samsung series 9 laptop. I installed windows 7 as a virtual machine running under qemu/kvm. I am able to display the virtual machine from Lubuntu on the host ...
0
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1answer
1k views

Web Control Panel for KVM [closed]

I need Web Control Panel for KVM that is compatible with Ubuntu 12.04 or higher. SolusVM, Virtualizor isn't compatible with Ubuntu.
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3answers
5k views

VirtualBox and KVM beside each other

I have a KVM virtual run on my machine. I tried a while ago to install VirtualBox..Anyway i did it and install bu when i tried to start the machine i got the error: VERR_VMX_IN_VMX_ROOT_MODE I ...
0
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1answer
243 views

Mysterious multicast packets after bridging a bond0

I've got 2 interfaces eth0 and eth1 in a bonding (mode 4). Now I want working with kvm and let the instances communicate over a bridge br0. Now my config changes. From this...: auto eth0 iface eth0 ...
0
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1answer
642 views

Virtual machine in two subnets

I'm coming from networking where a router/switch has a separate interface for management. Therefore I want to understand how this is implemented for servers/virtualized servers. I have one subnet ...
0
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1answer
2k views

IP address on virtual bridge?

I would like to configure a static IP address on the virtual machine. This interface should be connected to one of the host physical interfaces via a bridge. If I have understood the documentation ...
1
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1answer
283 views

How to define clone presets to virt-manager

When using virt-manager 0.9.1 to clone existing machines, it ignores that the virtual disks are qcow2 compressed and sparsed. The cloned virtual disks are non-sparsed and in raw format. I know about ...