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

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Why is 'steal' time gradually increasing?

I'm tracking CPU usage on a VM on a lightly-loaded host. Everything appears to be functioning normally on all the VMs, but collectd is reporting a gradually increasing 'steal' time: The actual ...
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136 views

Why does saving a KVM-QEMU VM requires additional memory?

I have three VMs running on Red Hat Enterprise Linux with 8 GB RAM, each of the VMs has 3 GB allocated, and I also run a 512 MB VM. If we also consider the guest OS's memory usage (usually 1.5 GB due ...
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164 views

Migrate a qcow2 image between storage pools

I have 2 storage pools. host_images (directory storage pool) remote_images (nfs storage pool) How do I copy qcow images from remote_images to host_images using libvirt APIs? I've tried using the ...
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245 views

Setup Cloudmin on Centos installed in LVM

I installed CentOS 6 with default LVM partition pattern. according to this pattern Can I use Cloudmin and store KVM Disks in LVM as Logical Volume? I think Cloudmin requires creating new logical ...
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16 views

How to send mouse and keyboard to Virt-Manager guest

I have a Windows guest in virt-manager running headless (no spice server) because video is output through a GPU (pci passthrough). But my question now is how to send the keyboard and mouse to the ...
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55 views

Is there a way to emulate a wireless card in qemu / kvm?

Is there a way to emulate a wireless card in qemu / kvm? Or is there no point to this? Is it considered just another interface?
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158 views

USB ethernet device not working in VM

I'm having trouble getting a USB ethernet device working in a qemu-kvm/libvirt VM. The problem is that even though the guest OS sees the USB device just fine it can't mount it. lsusb on the guest ...
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99 views

How to find IP of the KVM Virtual Machine from Host system?

My KVM VMs are connected using MaCVTAP connection VM network Interfaces. I have to manually go into the VM to find the IP address. The VM interface doesn't ping to the host interface as the source ...
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239 views

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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244 views

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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36 views

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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2k 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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271 views

What is the structure of Libvirt Qemu VM dump/save files?

I need to do some exploration of Qemu-KVM virtual machines physical memory (particularly I need to check the fact of the physical memory intersection). In order to do that I'm trying to save VM's ...
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262 views

How to setup KVM partitions?

I'm trying to install SolusVM/KVM on a server with one 500 GB HD and one 256 SSD. I am a complete beginner at Linux. SolusVM has a script on the site to download and install automatically, but how do ...
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43 views

Passthrough PS/2 keyboard to guest OS

OS Windows run on VM (ubuntu, libvirt, qemu-kvm). And I have PS/2 keyboard on host hardware. Is there any way to pass it to guest OS without lost of performance (maybe emulate USB keyboard with keys ...
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33 views

Connection issues with KVM on RHEL6.5 to Licence Server

I currently have a RedHat 6.5 kvm running under a RedHat 6.5 host. I am attempting to make a connection to a Rational Apex licence server on the local network, however the connection times out before ...
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82 views

Debian wheezy - hanging on shutdown

My debian system hangs when I'm trying to shutdown/reboot. It hangs on: kvm: exiting hardware virtualization (infinitely blinking white cursor) I've tried to shutdown by gui and by ...
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40 views

Outgoing masquerade address changes after adding a second interface to the bridge

In fact I have the following configuration: extrouter(192.168.1.1) <- wifi -> [eth2 (192.168.1.11) Centos 6/6 based host br0 (172.22.5.254)] br0 contains two tap interfaces (tap0/172.22.5.1 ...
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151 views

(virt-manager:4796): Client failed to connect to the D-BUS daemon / Unable to connect to libvirt

I would like to boot and run Windows 8 with kvm or xen while I'm running Debian Wheezy. Actually I have installed Windows 8 on the external USB disk and Debian Wheezy on the hard disk sata. I'm tryng ...
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94 views

Proxmox server VM growing than what i have assigned for VM disk space

I have only 2 VM's in one of the SSD hard disk server, Hard disk size was just 120 GB. I have assigned 32 GB for each VM's but now there is only 1 GB space left in /var/lib/vz. While listing the size ...
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39 views

How to replicate KVM for DR purpose?

I am looking to replicate multiple KVM servers from one data center to another data center. What steps with specific commands to be used to replicate one server so I can use that for others. Thanks ...
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102 views

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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264 views

iptables server behind NAT accessible from outside as well as inside the nat

I have 2 machines with a KVM running on each machine - so two kvms with the below networking Host 1: 192.168.10.100 (eth2) 10.10.100.1 (virbr1) KVM 1 (NAT with Host 1): 10.10.100.128 (eth0 ...
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102 views

Error mounting shared folder for KVM Solaris guest

Followed this guide on how to set up a shared folder between a KVM Host(Ubuntu 12.04) and Guest (Solaris 10 Sparc). On the last part of the it requires you to mount the shared folder and typed in this ...
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191 views

ssh local tunnel to VM

So, can anyone explain why this doesn't work? Everything from remote host (192.168.1.3): ssh -L 9000:192.168.1.2:80 login@192.168.1.2 elinks http:127.0.0.1:9000 and I can see a web page. other ...
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122 views

libvirtd not suspending guests

My guests, one windows, one linux, are not being suspended. I'm not sure why. Here's the output of systemctl, which looks wrong, but I've done systemctl start libvirt-guests && systemctl ...
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133 views

benchmarking ftp in 3 methods of virtualization

My Bachelor Final Project is about benchmarking visualization methods with ftp, web and mysql services: installing Debian on xen (para-visualization) kvm and lxc with equal resources config (equal ...
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54 views

Can I use Synaptics' output in KVM?

I have been looking at MenuetOS, a simple graphical OS written entirely in FASM. The only reason I don't actually use it is that its touchpad support is pure garbage: every time I try to run MenuetOS, ...
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293 views

Disable SSH Tunnel with KVM VNC Server

Here at work we've set up a KVM server that hosts a couple guest machines. The KVM itself is headless and we remote into whenever needed, but we would like to be able to VNC into the guests. I have ...
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487 views

Ubuntu 10.04 kvm Virtual Machine guest network speed slow

i have the following situation, i have a kvm host ubuntu 10.04 LTS 64-bit network host speed is perfectly run , as i am testing network speed using iperf , the speed between any network device and the ...
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1k views

How to backup KVM images? Is it possible to backup whole VM?

I need to backup all (9 VMs) my KVM VMs. I would like to backup them in the night for example once a week. For example VMware server and VMware server 2 used to have possibility to create live backups ...
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512 views

qemu-kvm savevm very slow

I have up to date gentoo system with kvm images located on 500 gb partition with 200 gb of free space and defragmented, running machine with Windows XP and 2gb ram, I have problem with making snapshot ...
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7 views

qemu command line management

I'm interested in qemu, specifically the kvm feature in Linux which is operated through the command line. I see there are a ton of features available for gnome-boxes and libvirt specifically. My ...
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16 views

Debian server management GUI

I have to manage a number of Debian servers (one as the KVM host, and the others as virtual servers for File management, Infrastructure management - DNS, DHCP etc, and finally a Debian based ...
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Kickstart with NFS does not work on static IP on KVM

I am using virt-install to use KVM qemu to launch centos VM. The DVD extracts of centos are hosted on a NFS server. The kick start has the line. network --onboot on --device eth0 --bootproto dhcp ...
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15 views

How to mount a path into a kvm?

I have a Windows machine inside a kvm machine on a Linux system. I would like to mount /home/myuser/Documents into 'c:\Users\myuser\My Document'. How can I make the D: drive be an alias for the ext3 ...
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182 views

Why Debian Jessie is turned off instead of rebooting after installing qemu-kvm?

I'm using a new stable Debian Jessie (minimal installation without DE and standard utilities). First of all, I set 'enabled' for Intel virtualisation in BIOS and installed qemu-kvm as usual: # ...
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77 views

Virtualization on Intel Edison

I want to do virtualization on the Edison. (Edison has vt-x.) On Yocto linux there isn't anything in the repo that is useful. On Ubilinux there is KVM but there is no kernel module in aptitude package ...
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84 views

Packets drops seen in physical interface while using kvm bridge

In ubuntu kvm hypervisor we are seeing packet drops in the physical interfaces once we create the bridge. Below is the output of ifconfig, br1 Link encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx ...
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102 views

Running Mac OS X under KVM/QEMU

Note to be removed in the future, so as to avoid confusion from answerers and mods edit: Forgot to add in the note, if anyone thinks this is the wrong stack-site to post this, please comment on why, ...
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94 views

How can I configure multiple tap interfaces for a single KVM virtual machine

I am trying to setup a VM using Linux KVM for a F5 BIG-IP VE deployment (used in a lab) ...
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195 views

unable to start vm on kvm

I'm not able to start a vm on kvm with the following error [root@dev1 RHEL5-7]# virsh start demo-57-test error: Failed to start domain demo-57-test error: Unable to add port vnet0 to OVS bridge br0: ...
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69 views

kvm console not working at login [centos on centos]

When I run the following $su $virsh console myvm I keep getting login incorrect , even though I'm typing the correct password. In fact, it does work if I use virt-viewer. What could it be?
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145 views

Adding QEMU/KVM option to virsh VM starting script

I use libvirt to manage a QEMU/KVM system. Starting a VM only by using virsh start vmname What I want to know is how to add an option to virsh starting script, in my case I want to add QEMU ...
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148 views

How to bridge a VM to public IP

I wish to to assign the IP from my eth1:2 to a VM; I also have no use of this IP for the host, it would be desirable to be exclusive to the VM. I've ended up with a setup just like this (eth1:1, ...
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130 views

Debian, Dibbler, IPv6 and Bridging Woes

I'm currently trying to setup my Dedibox LT as a virtualisation (KVM) server. I've elected to use Debian instead of Proxmox or ESXi for various reasons. Currently I'm having problems with getting ...
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46 views

KVM based RHEL 6.3 VM OS installation - lvm based partition feature not availble

I am installing RHEL VM OS on KVM by virtual manager tool. While installing the OS, I want to do lvm based partition. For example: Filesystem Size Used Avail Use% Mounted on ...
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224 views

PCI Pass through for gaming, Arch Linux

Okay, so I have attempted PCI pass through before, and failed, so I'm trying again but I'm looking for some tips, allow me to explain. I'm looking to use QEMU/KVM to build a W7 VM, this will be a ...
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459 views

GeForce GTX 660 as passthough device with KVM : error no iommu_group for device qemu-system-x86_64

I'm tryng to use my GeForce GTX 660 as passthough device with KVM. I'm reading this guide : http://www.pugetsystems.com/labs/articles/Multiheaded-NVIDIA-Gaming-using-Ubuntu-14-04-KVM-585/ I'm ...
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141 views

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 ...