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

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3
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43 views

How to configure networking for KVM

Ok, my situation is as follows. I have: -host (Ubuntu server 14.04) on which I want to have multiple VMs (KVM). This host has 2 NICs (eth0, eth1) -home router (dhcp, network 192.168.1.0) -PC with ...
3
votes
0answers
121 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 ...
3
votes
0answers
548 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 ...
3
votes
0answers
89 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 ...
2
votes
0answers
388 views

KVM GPU Passthrough

now i know this issue has been talked about before, but those topics are old now and slightly out dated. So I have recently been following a few different guides on getting this system working, ...
2
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0answers
88 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
10 views

juju can not start lxc machine

I am trying juj on an openvz VPS. when I try juju bootstrap it says: uploading tools for series [precise trusty] Logging to /home/danialbehzadi/.juju/local/cloud-init-output.log on remote host ...
1
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0answers
103 views

Bridge wireless and ethernet to KVM

I've just installed a new laptop with Ubuntu 14.10 Desktop and I'd like to get try and get KVM running so that I can host a couple of guest VM's. The problem is I can't figure out how to configure the ...
1
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0answers
49 views

Server crashed but why?

could someone tell me what causes the crash of this kernel panic? This machine (14.04.1) is a virtual machine on my KVM host (14.04.1) See the screenshot My host machine has 32GB of RAM and uses ...
1
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0answers
89 views

Automount USB disk (ntfs) and use files for libvirt/qemu/kvm?

When I plugin my NTFS USB disk it gets auto-mounted. That's fine. But when I want to use files for libvirt/kvm/qemu virtualizaztion they cannot be accessed. Sadly I cannot find the parameter or option ...
1
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0answers
17 views

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) ...
1
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0answers
38 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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0answers
376 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 ...
1
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0answers
141 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 ...
1
vote
0answers
23 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 ...
1
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0answers
116 views

Finding Storage pool/volume path using virsh

I have a few questions about storage pools and volumes in KVM. Is there a way to get storage volumes' paths via virsh? How do I associate a storage pool to the path it is located in? Both virsh ...
1
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0answers
287 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 ...
1
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0answers
180 views

How do I make wireless bridged networking work with linux guest in kvm/qemu?

I am running the ubuntu 13.10 cloud image on kvm/qemu. The guest networking works fine operating in NAT mode when on wireless. Wired bridged networking (eth0 + macvtap) works fine as well. When ...
1
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0answers
100 views

sheepdog cluster

I'm using a Ubuntu 13.10 Touch with a Mate Desktop on a 32-bit Arm-System and have installed qemu and sheepdog, to use sheepdog in a 32-Bit system i have this Skript ...
1
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0answers
103 views

KVM guest priority starting

I have 2 guests on my KVM Virtual Machine Manager (debian1 and debian2). I need to start debian1 always first, so I want disable starting debian2 before debian1. Is it possible? How can I make it? ...
1
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0answers
89 views

Networking with two ISP

I'm trying to configure two ISP on different network cards and at the same time to use bridge in order work with virtual machines and KVM. The current network configuration can be seen below: auto lo ...
1
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0answers
64 views

Enable/Disable Serial Devices (COM's) for multiple VM instances via command line

I have a host computer (Ubuntu 12.04) running KVM (QEMU) which has anywhere from 1 to 10 VM's using Windows XP, Windows 7, Debian, Ubuntu etc.. From the host machine I need a way to bind serial coms ...
1
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0answers
396 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 ...
1
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0answers
73 views

Need more info on KVM disabled message

I just installed Ubuntu 13 as a DUAL Boot with WIN 7. I just installed the Nvidia proprietary drivers for my GeForce. Upon reboot I received the KVM disabled message. I googled that and see various ...
1
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0answers
508 views

virt-manager problem

I installed ubuntu 12.04 server, kernel 3.5.0-37-generic, and the ubuntu GUI afterwards. When I start virt-manager and want to create a new VM I get this warning: Error: No hypervisor options were ...
1
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0answers
267 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
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0answers
104 views

Can PXE be used to logon to VM

Can I use PXE to boot a thin/fat client directly into a running VM. My plan is to have my server running the VMs (Windows and ubuntu machines)in XEN or KVM I need for the Family to use and have some ...
1
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0answers
3k 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: ...
1
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0answers
78 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. ...
0
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0answers
8 views

Unable to connect to kvm solaris11.2 guest in ubuntu 14.04

I'm unable to ssh to solaris 11.2 guest. However redhat 6.3 and windows 7 guests are accessible. contents of /etc/network/interfaces in ubuntu 14.04 auto lo iface lo inet loopback auto eth0 ...
0
votes
0answers
18 views

qemu: how to select from which hdd to boot?

I want to connect 2 hdds to my qemu virtual machine. One of them is actually a file connected via virtio, and I want it to be the bootable drive. The other is a partition that I want to pass through; ...
0
votes
0answers
34 views

Why does Ubuntu still use a blacklisted graphics card claimed by stub?

I am following Multiheaded NVIDIA Gaming using Ubuntu 14.04 + KVM tutorial and it seems like everything went well except that my ubuntu installation still shows HD7970 under Additional Drivers which ...
0
votes
0answers
19 views

How to configure KVM host NIC and virtual guest NIC for installing 3-node OpenStack?

My host PC is running Xubuntu 14.04.1, on which I have installed qemu-kvm, libvirt and virt-manager. The guest OS is Ubuntu Server 14.04 on which I plan to do networking for a 3-node OpenStack setup ...
0
votes
0answers
10 views

How to enable promiscuous mode in a KVM virtual NIC?

How to enable promiscuous mode on an Xubuntu 14.04.1 host? How to enable promiscuous mode in a KVM virtual NIC? (using virt-manager if possible.)
0
votes
0answers
11 views

Ubuntu KVM guest uses only 1 out of N cores - even under load

I have a web application server running Ubuntu 12.04 as a KVM guest. What I have seen is that even under heavy load only one core is being used extensively. It is not an issue of the application not ...
0
votes
0answers
31 views

Restoring a VM to LV, GRUB disk not found

This is what my setup looks like: ubuntu 14.04 running KVM with libvirt has a HW-Raid it's running from (/dev/sda) and another HW-RAID (/dev/sdb) that is the PV to a LVM VG called "datavg" with ...
0
votes
0answers
30 views

Is it possible to install something similar to VMware tools in a KVM virtual machine?

Is it possible to install something similar to VMware tools in a KVM virtual machine? In particular, are there video card drivers for the guest OS to enhance it's video capabilities, apart from the ...
0
votes
0answers
11 views

Make libvirt/qemu VNC take an interface name instead of a fixed IP address

I rely on VNC to communicate to my VMs from an external system, so in the XML description file I have something like this: <graphics type='vnc' port='-1' autoport='yes' listen='10.1.1.199' ...
0
votes
0answers
30 views

How to install qemu-kvm from source

I previously installed kvm via apt-get. Then I install qemu from source via following steps: wget http://wiki.qemu.org/download/qemu-2.1.91.tar.bz2 cd qemu-2.1.91 ./configure make && make ...
0
votes
0answers
15 views

How do I make Unity interface and all of Ubuntu use CPU rendering only

I want to use a KVM emulation technique which grabs the graphic card as if it weren't being passed by ubuntu, just grabs it 100%. such a technique allows you to install the graphical driver on the ...
0
votes
0answers
26 views

Moving KVM data to my home folder

Is there a way to move all KVM data (machines, images. etc..) to my home folder? Using Ubuntu 14.04.
0
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0answers
46 views

Not able to start StartX on Ubuntu Server configured inside KVM

I have Ubuntu Server installed as guest OS inside KVM. I also installed Ubuntu Desktop on top of that but now when I am trying to start GUI using StartX, I am getting below message and my screen ...
0
votes
0answers
186 views

lxc/kvm containers fail to start

I have MAAS+Juju setup ready and was successfully able to deploy some openstack charms on specific machines. Then, I read that its safe and good practice to place these openstack charms in their own ...
0
votes
0answers
36 views

My Ip address keeps changing each time I restart my virtual computer

I have a KVM configured running two VMs with almost exact characteristics, the main difference is the service they provide. The IP network is obtained via DHCP(I have configured a bridge in the KVM) ...
0
votes
0answers
38 views

Snapshot revert fails in my KVM setup

I am trying to revert a snapshot and I am getting the below error message in my KVM setup . Reverting to a snapshot is failing. #virsh snapshot-revert TestImg Deployed-Stage --force error: An error ...
0
votes
0answers
32 views

KVM Virtual Machine Internet not working on dedicate server

I have installed Ubuntu 12.04 with kvm installation and cloudmin but the internet is not working on virtual machine, can anyone help me please. I have also tried iptables -t nat -A POSTROUTING -s ...
0
votes
0answers
44 views

Is it still necessary to disable KVM modules when installing VirtualBox?

I'm about to install VirtualBox in headless mode, on an Ubuntu server running 14.04. In the past it's been necessary to disable or remove KVM and Qemu, as VirtualBox will not run if they're present. ...
0
votes
0answers
50 views

How to export the KVM based guest VM as template or ovf or some other format?

I am new to the KVM virtualization. I have deployed and configured KVM in one of my server. Also I created the guest VM successfully and installed OS on it. Its up and running without any issues. Is ...
0
votes
0answers
29 views

How to know why does ubuntu server (on the virtual machine - KVM) shuts down itself

My ubuntu server 12.04.2 LTS (GNU/Linux 3.2.0-37-generic-pae i686) shuts down by itself in different times I can't find what's causing it. It has installed on Virtual Machine Manager 0.9.1 that is ...
0
votes
0answers
71 views

KVM Can´t access VM

I have a VM that has one bridged network adapter that uses a public IP. I setup a private network for internal purposes, but after I added a private network adapter to my VM I have no external access ...