KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-...

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Kvm virtualization packet loss on guest machine

In Ubuntu 14.04(64-bit) by using KVM virtualization and bridging network I have about 10% packet loss in my guest machine and I have no packet loss on host machine. server1@xxxx:~$ uname -a Linux ir1 ...
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21 views

Foreman Error creating compute resource

I'm using Ubuntu 14.04. I'm trying to make a compute resource in foreman using libvirt. I followed the instructions, but I keep getting the following error when I enter my url: "Unable to save ...
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1answer
53 views

Nova Computer Service WIll Not Start: libvirtError: XML error: Missing CPU model name

I am having a problem with the Nova compute service not starting. I found tons of other people with this question, but nobody seems to have figured out the problem: systemctl status openstack-nova-...
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1answer
39 views

KVM/QEMU: “Storage parameter error: directory is not managed on the remote host” when importing an existing image from a mounted drive

A server I manage remotely has a KVM/QEMU image stored on a non-os, mounted drive /mnt/drive. When I use virt-manager to import the disk image, I get the following error: Storage parameter error. ...
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38 views

KVM/QEMU Connecting guests only to other guests

Heyho guys, I have one host machine with multiple VMs on it. Their gateway is the host machine (which is doing some NAT etc.). There's one bridge at the host machine and a default virtual network ...
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2answers
224 views

iptables / KVM forward port

I have a server with one external IP address (e.g. 1.2.3.4). On that server I use libvirt to run virtual machines. Now I want to access a virtual server on my host via ssh (port 1234) from the outside....
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2answers
47 views

KVM - Access from an external computer to the Virtual Machine

I have the following setup: Notebook (IP: 192.168.1.100) Host: (IP:192.168.1.129) Both Notebook and Host are connected to a router (Internet IP:192.168.1.1)¨ The host (Host) has two virtual ...
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75 views

How can VM and Docker bridge traffic be routed through a pfSense VM?

I think this question is a result of me not being able to wrap my head around Docker networking and not being super great at Slackware. It seems like there should be a simple solution; I'm just ...
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1answer
95 views

How to forward a port from guest to host in qemu (kvm)

Is it possible, and how, to forward a port from guest to host in qemu/kvm? Note do I mean (out of) from guest to host, and not from host into guest (that's widely documented). I think I'm looking ...
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1answer
90 views

Clone KVM virtual machine with snapshots

I've created a virtual machine using virt-manager and saved a snapshot of it's current state. Now I'd like to create an exact duplicate machine with all snapshots from the first machine. How could I ...
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1answer
62 views

QEMU, Virsh and SMBIOS tables edit

I am currently running qemu-kvm on an Ubuntu server box and I use libvirt with Virsh to create, manage, start and stop VMs. I edited VM's XML configuration through virsh edit command to change CPU ...
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41 views

windows 2012 r2 guest OS cluster in SUSE KVM environment steps

We are trying to configure the windows 2012 R2 guest OS cluster in SUSE KVM environment we are getting message no disk were found on which server we need to perform cluster validation test. As we ...
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1answer
45 views

Bridging of Internal Network in KVM

I am working on a project regarding deployment of VMs as internal network, which should be accessible from external LAN, in KVM. I am stuck in bridging these virtual machines. My setup consists of ...
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1answer
37 views

Advice needed about RAID and partitioning new server

first of all i want to appolagize if i doublepost. Plese merge this with similar post. Thank you. Now about the situation and the system we are trying to build and want an advice from experienced ...
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0answers
34 views

How to install Ubuntu ARM image with virt-install

How do you use virt-install to create an ARM virtual machine for running an Ubuntu ARM Raspberry Pi image? The docs are unclear to me, but from reading the manpage and looking at several examples, I ...
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1answer
11 views

Trouble routing between interfaces on KVM host

Summary: VMs on host in different subnets can reach each other, but VM on subnet B cannot contact host's interface on subnet A. I am not sure if this is a product of my lab setup and firewall rules, ...
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1answer
71 views

Can't start VM OpenNebula

I have 3 nodes with CephRBD + OpenNebula + Corosync + Pacemaker + Galera + crmsh. Software: OpenNebula 4.14.2, CentOS 7.1 All works, but when I instantiate VM, a get an error and VM in PENDING ...
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28 views

Cgroup io throtteling kvm

I am using virtio-9p for sharing the file between host and guest. To test the shared file I do read/write options in the guest.To have controlled io, I am using cgroup blkio. While using cgroup I am ...
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14 views

Start KVM with readonly CD image from libvirt on Debian jessie

I have a Debian jessie machine that has a network share containing ISO images mounted from another server, with the share being readonly. Now I'd like to start a new VM, using an image from the share ...
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12 views

Creating a new libvirt VM based on existing snapshots

I have a libvirt/qemu-VM with multiple snapshots. (I can for example use virt-manager to see those snapshots.) Is there a way to clone this VM completely keeping all the snapshots? Is it otherwise ...
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17 views

linux bridge with vlans

I have a couple servers that I need to use lacp on that would hook in to the bridge for kvm to tap off of. I need to split out several vlans from there. my cisco switch has 2 ports set to trunk ...
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11 views

Unable to access VM after DHCPACK libvirt

The installation of a particular software makes my VM lose its connectivity. The point where it hangs is 2016-04-05 16:49:11.996 | Listening on LPF/o-hm0/fa:16:3e:b2:43:4c 2016-04-05 16:49:11....
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19 views

How to make live snapshot in qemu?

I have two live qemu virtual-machines with KVM support(-enable-kvm) in daemonized mode(-daemonize). I don't use libvirt. One of those virtual-machines use virtual HDD in qcow2 file-format and another ...
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41 views

KVM/libvirt: Using virtio disk driver in Debian installer

I try to install Debian in a KVM-based VM using the virtio disk driver/bus and virt-install to run the installer. However, it seems that the installer lacks the virtio driver. Once I switch to bus=...
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21 views

NFS client latency spikes on KVM host machine

We run a small OpenStack environment with KVM hypervisors and shared NFS storage. The problem is: guest KVM machines' CPU usage spikes make NFS client latency grow. For example: same NFS volume ...
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1answer
47 views

how to connect kvm virtual machines directly to external IP's

I know this question was asked here and there but no answer works for me. After hours of googling I can't figure it out. I have Ubuntu 14 server and I need to make few virtual servers - I want ...
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10 views

Ubuntu KVM host

I got a default installation of Ubuntu 14.04 on my lab-pc and wanted to run a few VMs there using the virtual machine manager. I followed the official ubuntu docs and actually everything seems to be ...
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1answer
203 views

Difference between qemu-kvm, qemu-system-x86_64, qemu-x86_64

For new features, I recently updated qemu-kvm 1.5.3 to qemu 2.5.0, but I saw several qemu binaries, /usr/local/bin/qemu-x86_64 and /usr/local/bin/qemu-system-x86_64. It seems qemu-system-x86_64 is the ...
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1answer
61 views

Recovering KVM VMs when booting from mirrored host OS

Im running KVM on a Ubunutu 14.05 server. The server has 2 1.2TB drives which will each have 1 VM (elastic search nodes). I did a dd to clone the main OS and can boot from either disk without issue. ...
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0answers
1k views

Using NAT in qemu

I have used Qemu to install a windows xp guest. The command I run is qemu -m 2048 -gda winxp64.img \ -boot d -usbdevice tablet \ -enable-kvm -vnc :10 \ -netdev user,id=network0 -device ...
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0answers
84 views

Linux swap partition not mounted by systemd on boot after dist-upgrade

Recently, I performed a dist-upgrade from Debian Wheezy to Jessie. The upgrade was performed without any error but after the upgrade the swap partition was no longer mounted/activated. The mentioned ...
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2answers
36 views

Can't create KVM virtual machine with same name after initial failed attempt

I am running on an CentOS server. I first created a KVM machine for an Ubuntu VM, but something didn't go right (I couldn't connect to the VNC session) so I aborted it. There was a warning on the ...
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39 views

CentO7 multiple TCP port forwarding entries, does not allow certain ports

I have CentOS7 KVM setup that is using TCP port forwarding to forward SSH sessions to three guests running behind a NAT virtual bridge. This is the setup i'm looking establish 2020 -> 192.168....
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1answer
48 views

Max number of KVM guests in Centos host

On this page, Redhat state that RHEL 5, 6 & 7 are all limited to a maximum of 4 concurrently running KVM guests. Other products that they offer, such as "Red Hat Enterprise Virtualization", do ...
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1answer
95 views

CentOS 7.2.1511 libvirt firewall configuration

I have a few CentOS7 setups in which I use iptables to forward ports from host to guests. Recently, i updated to 7.2.1511 and it seems libvirt insists firewalld to be active vs using iptables command ...
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8 views

How to determine that virt-install successfully installs an OS?

I run without --noautoconsole . When virt-install end the work? I want to get information from virt-install that OS installed. Can I enable VNC and serial console together?
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2answers
55 views

virsh qemu kvm editing xml has no effect

When I try to add a network section to a kvm/qemu xml, the xml wont update with the information. When I edit the uuid, or make a mistake, i get an error. if i change the memory amount, it reverts to ...
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0answers
9 views

libvirt-Can I use 'virsh save' this command only get 'vm physical memory'?

I use 'virsh save ' to create an image,but I only want to get 'vm physical memory'.I don't know how to do it now.If you know the answer please tell me.Thanks!
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1answer
106 views

Ubuntu preseed static IP configuration (virt-install)

I want to create Ubuntu 14.04 VM with virt-install and preseed configuration. I have provided: d-i netcfg/enable boolean true d-i netcfg/choose_interface select auto d-i netcfg/disable_dhcp boolean ...
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votes
1answer
25 views

Modifying qemu without screwing up my current install

I currently have kvm installed on my Debian laptop: kvm --version QEMU emulator version 2.1.2 (Debian 1:2.1+dfsg-12+deb8u5a), I want to modify it to supported nested virtualization (ESXi VMs). ...
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0answers
19 views

kvm host refuses to shutdown when guests are suspended

I've been able to do this before but now all the sudden when I suspend the guests on my Debian kvm host and then shutdown the host it hangs with "a job is running for suspend active libvirt guests" ...
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1answer
64 views

Proxmox-Server reboots sporadically

I just mentioned that my proxmox-system is rebooting from time to time when performing backup-tasks (bacula, not the proxmox-backup-system). The logs are showing the following: Mar 8 02:30:01 ...
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0answers
18 views

how to change or modify libvirt xml domain definition?

first of all excuse my bad english. I would like to know if it is possible to modify default xml domain definition location (/etc/libvirt/qemu). I would like to change this default path. tanks your ...
1
vote
1answer
18 views

Creating libvirt “mcast” networks using virt-install?

I would like to create virtual machines with mast network interfaces. This is possible to by first creating a guest using virt-install, then modifying the domain XML. Is there a way to do this from ...
1
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1answer
122 views

What are the steps to export a VM from KVM to ESXi?

I want to be able to export a KVM based VM to an ESXi 5.1/5.5 host. My current methods ends up with the VM not being able to boot on the ESXi host. (I have tried importing the same .ova on VirtualBox ...
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0answers
16 views

How to set up vm delay start when KVM host boot? [duplicate]

I have a KVM host server and running 6 VMs on it. When the server recovers from power failure, all the VMs always autostart at the very same time. I want to autostart one by one, preferably the ...
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3answers
80 views

Assigning multiple IPs to the same machine with one interface

I have a server with a single physical interface eth0. I intend on running VMs on this server. To that end I have an IPv4 block which is routed to said server. What I'm trying to achieve is to spin-up ...
0
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1answer
73 views

Win7 KVM guest with Virtio network driver can't connect to network

I have a ubuntu 15 and KVM. I have an XP guest that appears to basically work. I then set up a Win7 64 bit guest. It would not connect to the LAN. Then I found out about virtio drivers. I ...
2
votes
1answer
76 views

How can I reconfigure a Linux guest in Proxmox to use a virtio-based HDD instead of IDE?

I'm running Proxmox 3.3.1 to host a virtual machine running Linux (64bit, kernel version 3.2.0). The virtual machine uses a 512GB HDD which was unfortunately configured to use the ide driver when ...
0
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1answer
216 views

Unable to install Fedora 23 in VM using KVM on Linux Mint 17.2

I'm unable to install Fedora-Live-Workstation-x86_64-23-10.iso into a QEMU virtual machine using virt-manager on Linux Mint 17.2. I've verified that the SHA256 checksum on the ISO is correct. I can ...