Tagged Questions

Linux Kernel Virtual Machine is a virtualization system (VM)

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0
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1answer
14 views

I can't see apache, nginx process while using “top” command

As the title said: "I can't see apache or nginx process while I'm using top command" I'm using CentOS 6.5 and of course I already installed it on my server. I run them as a service by using these ...
0
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0answers
10 views

Correct location to configure a bridge using iproute2

I'm setting up a server for KVM virtualization and having a play with linux networking while I'm at it. Initially I'm aiming for a very simple bridged network set up where eth0 is enslaved to the ...
0
votes
1answer
16 views

I want to start VM for specific time

I am designing a system in which lot of VMs are there which run on KVM. My physical resources are limited, that is why I want to allow some of the VMs to run for some specific time(say Every Wednesday ...
0
votes
2answers
49 views

Install ubuntu on kvm in console

I use the following command to install Ubuntu server on KVM in a remote server using SSH console. But it seems that it does not recognize the iso image I provided as (a) it does not install without ...
0
votes
1answer
30 views

Unable to start VM from php

From a php page I am trying to start Virtual Machine using virsh tool on KVM hypervisor but I am getting this error. error: Failed to connect socket to '@/var/www/.libvirt/libvirt-sock': Connection ...
-1
votes
0answers
11 views

How to start VM using virsh tool from webpage?

I have a php webpage, on client side it shows a button to start a virtual machine.From php we can execute commands also and taking this into consideration I am using virsh command to start the VM but ...
0
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0answers
43 views

is 3d acceleration possible in a win7 kvm guest? (host is debian 7)

I wonder if I can setup a windows 7 (64bit) kvm guest. I have only found some links for 3d acceleration in virtualbox guests, but nothing for KVM. Note that the host is a headless debian server and ...
0
votes
1answer
53 views

Why is [ssh,scp,rsync,etc] so slow, from a VM to another local machine on my gigabit local network?

I have a VM A running the latest archlinux with QEMU, KVM and a Virtio network card. It is a buildbot and it needs to drop the result on another machine B on the local network. The VM is started with ...
0
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0answers
26 views

Wrong modification times when saving on Samba share

I have a kvm virtual machine with Windows 8.1 with main purpose for Word/Excel and a bit of PowerPoint. Sometimes I save the virtual machine state and when turning it on again, the date and time of it ...
0
votes
1answer
78 views

KVM bridged networking issues

newbie warning: I'm completely new to virtualization so there might be an ridiculously simple solution to this... I'm trying to run a virtual machine with KVM on Ubuntu 14.04.1 LTS as host. For ease ...
0
votes
1answer
49 views

What's wrong with RHEL 6.5 on POWER in a PowerKVM guest?

I am seeing errors on two PowerKVM (Ver 2.1 SP1) systems on booting to the console of the form: irq: irq 4110 on host null mapped to virtual irq 27 BUG: Bad page state in process vballoon ...
3
votes
1answer
289 views

How to mount KVM virtual machine image to VirtualBox?

I have received a .img file of a server which is a Virtual Machine running in a KVM environment. The Virtual Machine has Ubuntu installed. I would now like to take this .img file and "emulate" the ...
0
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0answers
29 views

I wish to automate VM installation in KVM how do I?

I wish to automate VM installation in KVM. How do I do it? My setup is as follows: Host server: Ubuntu 12.04 64 bit RAM: 48 GB HDD: 800 GB CPU: 24 I wish to install Virtual machines using ...
0
votes
1answer
120 views

Enabling Intel VT-x on Vagrant guest

I'm running OSX Mavericks, and I know hardware virtualization is enabled. I have a debian VM in Vagrant with a virtual CPU that has support for hardware virtualization, but the vmx flag is disabled. ...
1
vote
0answers
129 views

qemu: How to use resolutions > 1024x768 in Windows 8(.1)?

In previous Windows versions, I was able to get higher resolutions in qemu/qemu-kvm by passing the -vga std or -vga vmware command line parameters. However, when I try the same for Windows 8 (and ...
0
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0answers
20 views

Virtual machines on Secure Boot

I have Fedora 20 installed with Secure Boot. I've been trying to make a virtual machine using OracleVM VirtualBox and VMware Workstation, but none of them work (vmmon couldn't be started). After ...
0
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0answers
68 views

How do I migrate a virtual machine using LVM from VirtualBox to KVM?

I have a virtual machine running CentOS on VirtualBox with a drive that uses LVM for partitioning / volume management. I need to migrate the vm to a linux-kvm host machine. Here's the steps I've ...
0
votes
0answers
38 views

Virtual machine - Sleep seems too long

I run a loop that does nothing except sleep for 1 ms and count the number of time it loops. In a KVM virtual machine, I get 500 loops per second, where I expect to have 1,000 loops. That happens with ...
0
votes
1answer
72 views

Weird output from linux `top` command

I got a weird output from command top, which shows the summation of the RES column is greater than my physical memory. For instance, I have a host with 64G physical memory and the swap partition has ...
0
votes
1answer
262 views

why do i get swapping even if i set vm.swappiness to 0?

I have a couple centos 6.5 x64 servers with 64GB ram running lots of kvm vps's. some of these servers have no swap usage at all and some do. I've set swappiness to zero. However some still swap even ...
0
votes
0answers
15 views

CentOS bridged adapter

I am looking for a way to have a bridged adapter that can also forward ports to different IPs for my virtual machines. For example: 192.168.1.101:3391 192.168.1.102:3392 192.168.1.103:3393 Does ...
2
votes
1answer
1k views

Mirror Port via iptables

I have a dedicated Linux (Debian 7.5) root server, with a number of guests set up. The guests are KVM instances, and get network access via bridge-utils (NAT, internal IPs, use the host as a gateway). ...
0
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0answers
27 views

Create new VM based on existing .vhd with command line

I created an Ubuntu Server .vhd with Virtualbox and would like to boot it on another Ubuntu Server instance using kvm. How can I boot the .vhd and have it used bridged networking?
0
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0answers
227 views

Define new VM with virsh create (error: Failed to create domain from)?

On debian 7.3 I install KVM for virtualization. I have a VM on an other machine and try to clone it by virt-clone on LVM disk and then dd that disk to a file for moving to this machine. In target ...
0
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0answers
59 views

Improve the screen resolution in a virtual machine

I installed Windows Server 2012 Trial in virt-manager/qemu-kvm. When I look at the display settings, the screen resolution is limited to 1024x768 and there is only one Generic Non-Pnp Monitor in the ...
1
vote
0answers
36 views

KVM Arch install - no network

I often use KVM to try out various Linux distros. All I have tried so far get an automatic network, Red Hat and Debian have all connected out of the box, no problem. Makes installations very easy. ...
0
votes
0answers
14 views

Adding a disk fails - how to troubleshoot?

I'm utilizing the KVM API by POST-ing the following payload <disk> <name>bond-104_Disk0</name> <storage_domains> <storage_domain> ...
1
vote
0answers
92 views

What's the diffrence between snapshot-create and snapshot-create-as in virsh kvm?

On my virtualization system there are some VMs. One of them was aimed for testing some services on it. So in this case I need to have the first state of that VM. I searched for a solution found the ...
0
votes
1answer
507 views

Unable to get folder sharing to work under KVM Virtual Machine Manager

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: ...
0
votes
0answers
39 views

Qemu and KVM error in my system

Whenever I execute virsh version or qemu version I got this error qemu: symbol lookup error: qemu: undefined symbol: rbd_aio_discard I am unable to create the virtual machine in virtual machine ...
1
vote
0answers
442 views

nova-compute libvirt x86_64 emulator Error

I was trying to install openstackin Ubuntu12.04 server. I find that Nova-compute is not getting started and the error is the below. I followed some of the suggestions in various forums, but nothing ...
1
vote
0answers
75 views

Is Flash hardware acceleration assignable to a given GPU?

On a KVM Windows guest with VGA passthrough, Flash hardware acceleration is not working, e.g. it shows a green screen for youtube videos. The GPU (AMD) is working well and has the latest drivers, ...
1
vote
0answers
121 views

can't connect to kvm rhel guest from fedora host over any port other than 22 (ssh)

I have a kvm guest running Red Hat Linux in a Fedora 19 host. Running a ruby app in the guest on port 3000. I can ping the guest, and ssh into it from the host, but I cannot access the app itself. ...
0
votes
0answers
47 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? virsh ...
1
vote
0answers
160 views

VPN access kvm guests

OpenVPN is installed on my host system running kvm as virtualization and I've several guests with static/public (Bridged) and private IPs (NAT), every guest uses Samba to share some folders. how can ...
0
votes
0answers
17 views

KVM images not reading from custom location

In CentOS linux server I have a disk scenario as , A LV with vg0 in it and in that I have created a directory with intention as KVM have to read the images from this location. I have set KVM to read ...
0
votes
1answer
74 views

Virtual machine internal network - same host

If I have 2 VMs (web server + db server) on same physical host, how can they communicate? Being on the same host what speed can expect? Its CentOS KVM. What is the situation with SmartOS Zones where ...
0
votes
1answer
369 views

How do I convert my windows partition to a kvm virtual machine on Fedora?

I have a single hard drive with a windows partition and a fedora 19 partition. Is it possible to use a tool (e.g. virt-p2v) to convert the windows installation into a virtual machine on Fedora? Disk ...
0
votes
0answers
37 views

Why is my cloned kvm VM smaller than my original vm?

The order of each VMs life was: f20-openstack.img f20-openstack-clone.img f20-openstack-preinst.img f20-openstack-postinst.img -rw-r--r--. 1 root root 878M Mar 5 13:45 ...
0
votes
0answers
106 views

How to install KVM and VMWare side by side on Fedora 20 x86_64?

I use Fedora 20 x86_64, and I have KVM installed. However, for a course assignment, I have to install VMWare (to be exact, VMWare Workstation 10). Yes, I have to use VMWare. However, (as expected ...
0
votes
1answer
70 views

Ubuntu KVM failed to set up

I'm trying to set up a VM with KVM on my Ubuntu 12.04 machine (64 bit). I followed the installation instructions to the letter at http://www.howtoforge.com/virtualization-with-kvm-on-ubuntu-12.04-lts ...
0
votes
0answers
188 views

Thin provisioning disk space in KVM

I have a couple of KVM nodes with 4xSATA drives in RAID10, which I am using as a VPS node. I have a LVM set up, and I am using SolusVM for the nodes. There's already 30 VPSes each on the nodes, so I ...
0
votes
0answers
50 views

No connectivity in virtual machine (kvm)

I have installed virtual machine using kvm. But i cant access network . My ifconfig shows the following [root@server recorder]# ifconfig br0 Link encap:Ethernet HWaddr E0:CB:4E:DD:88:CF ...
1
vote
1answer
70 views

One speaker set for two computers

In my case, i have a setup of a linux host machine and a windows virtual machine, i have a soundblaster dedicated sound card and an intergrated intel hd soundcard. I was thinking i want to use the ...
0
votes
0answers
44 views

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 ...
0
votes
1answer
737 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 ...
0
votes
0answers
64 views

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), ...
0
votes
1answer
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 ...
0
votes
0answers
365 views

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 ...
0
votes
1answer
1k views

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 ...