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, ...

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2k views

set tap0 using virt-manager for bridged wireless

After 3 days I finally have kvm guests working on the network via wireless (link below - thanks!): My network is 192.168.1.0/24 on the host: sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward" ...
2
votes
2answers
101 views

libvirt (KVM) inventory application?

I've got a bunch of LibVirt-managed (locally using virsh) KVM VMs on standalone Linux hosts (local KVM, local storage). Is there any web-based application out there that will track the inventory - ...
2
votes
2answers
430 views

Can I run a KVM guest with a btrfs subvolume as file system?

I want to run a virtualized Debian stable KVM guest on a Debian stable host (to run untrusted stuff like Skype, Flash or eclipse with third-party plugins). Naturally host and guest will have many ...
1
vote
2answers
167 views

KVM: All network traffic to one guest (firewall)

I am currently using a VMWare ESXi 5.5 server for my virtualisation. The network setup is like this: PFSense firewall is the center of it all and connected to: LAN Network (physical NIC 1 assigned by ...
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2answers
88 views

KVM guest has wrong outgoing IP address

I'm having the same problem that's described in the following question here, however no clear answer was given. KVM guest has a wrong outgoing ip address My KVM host has an IP address of ...
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2answers
605 views

Wake-on-lan to trigger virtual-machine with kvm and libvirt

I'm doing virtualization with KVM and managing via the Libvirt daemon. How do I start a virtual machine via wake-on-lan?
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2answers
198 views

KVM + Cloudmin + IpTables

I have a KVM virtualization on a machine. I use Ubuntu Server + Cloudmin (in order to manage virtual machine instances). On a host system I have four network interfaces: ebadmin@saturn:/var/log$ ...
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2answers
295 views

Iptables firewall on a KVM host

I'm running some guests on a KVM dedicated server, and I would like to use the host as a firewall, to control all accesses down from the hypervisor, using forwarding rules. It is a good idea or is ...
1
vote
2answers
316 views

Downloads stuck from a VM run by libvirt (kvm) on Ubuntu 10.04 LTS

I first wrote my problem on stackoverflow thinking it was a Maven proxy software problem. But I realised it was more a problem with my virtualization stack (libvirt 0.7.5-5ubuntu27.19 / kvm ...
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2answers
597 views

upstart pre-stop script

I have libvirt/KVM set up on my Ubuntu and before shutting down the machine I would like it to attempt shutting down the VM's using an ACPI poweroff (virsh shutdown), then I want it to stop shutdown ...
1
vote
2answers
338 views

Building virt-viewer on CentOS failed

When I have attempted to build virt-viewer 0.2.x on CentOS, I had a build problem: virt_viewer-viewer.o: In function `viewer_resize_main_window': /root/virt/virt-viewer-0.2.0/src/viewer.c:285: ...
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votes
2answers
39 views

My KVM machine can't get the network

I'm setting up a virtualization server for my company based on Fedora 19 and KVM. Our goal is to being able to convert and run a bunch of VirtualBox VMs. So I setup my F19 server, and created a br0 ...
0
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2answers
187 views

qemu don't start quest with disk image on tmpfs

I have 32bit windows 2k3r3 guest (terminal server) with 4GB guest ram and swapping. I created separate disk image for guest swapping and user's temp dirs. I have enouth RAM in host system and want ...
0
votes
2answers
402 views

How to mount disk on centos 6.4 KVM server

I have Centos 6.4 on KVM server already up running with couple of sites, now i am almost run out with space so i decide buy from the server provider more gb in order to increase the HDD. I contact the ...
0
votes
2answers
380 views

bridge networking KVM

i am having a problem connecting VMs to the bridge interface. My VMs cannot connect to the host and LAN outside the host, when i ping it just say destination host unreachable. it seems that my VM is ...
0
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2answers
581 views

How to efficiently share host's folder with KVM guests?

I am configuring the service which stores plenty of files uploaded by nginx in /srv/storage dir on host system. These files are processed by worker KVM guests which may create new files or assign ...
0
votes
1answer
133 views

KVM guest can't find gateway

I try to setup a KVM server with bridged networking. I followed the docs, but still can't get it working. The guest system can ping the host system and the host the guest system, so the connection ...
0
votes
1answer
130 views

scripted resize kvm images

I'm examining the possibility to script the resizing of a kvm image. The goal is to give our customers the possibility to upgrade their vps online. So for instance if a customer has a vps of 10G then ...
0
votes
1answer
275 views

Ubuntu 12.04 server - KVM - Networking - Assign dedicated IP to GUEST

Howto setup KVM guest to be reachable by a dedicated ip from www? In this case i would like to assign the ip currently on br0:1 to a virtualmachine. The problem i face here is that when i ssh from ...
0
votes
1answer
111 views

See processes inside qemu

Sometimes a virtual machine inside kvm/qemu is saturated (load too high). Even a login (ssh) takes several seconds. But the host is still accessible. How can I investigate why the virtual machine is ...
0
votes
1answer
53 views

Share share with guest and use specific user id (virtd, kvm)

I am trying to get a shared path setup between a QEMU/KVM guest and the host. The problem I'm having is that KVM runs as the libvirt-qemu user (Ubuntu distro) and thus won't have permissions to any of ...
0
votes
1answer
229 views

iptables, forward traffic for ip not active on the host itself

I have kvm guest which's netword card is conntected to the host using a tap device. The tap device is part of a bridge on the host together with eth0 so it can access the public network. So far ...
0
votes
1answer
105 views

How to access vm inside a vm via VNC?

For some reasons I installed virtual machines inside a virtual machine, like this: A( B( C )) where A is the physical machine, B is a vm and the network type is NAT. And C is also a virtual machine ...
0
votes
1answer
135 views

listing of VM's created before libvirt installation or started by any other VM management tool

if my VM's are not created using virt-manager or are created using any other tool, then virsh system list command does not give them in the list of running VM's however they are running perfectly on ...
0
votes
1answer
50 views

Looking for input on Windows+Mac Clients setup

I'm in the process of building the architecture for a new SMB. Some decisions have already been made, but I'm looking for some input from the community. Basically, the fundamental problem I'm trying ...
0
votes
1answer
418 views

KVM virtual machine networking, NAT and bridge together

I have two running KVM guests on an Ubuntu (Lucid) host. One of them uses the simplest NAT method, and DHCP inside. The other uses the bridge method and static IP inside. Both work fine. Can I mix the ...
0
votes
1answer
342 views

ping latency using vhost_net, macvtap and virtio

I have been testing network throughput and latency and I was wondering if my measurements are as expected. For the test, I used Fedora 17 for both host and guest, using kernel 3.5.2-3.fc17.86_64. ...
0
votes
1answer
1k views

How to limit usb 2.0 port to work as usb 1.1 in ubuntu?

Ive got problem with kvm usb forwarding and printing (windows xp guest goes BSOD when i try to print something). Ive been adviced to change usb to 1.1 version. That only kvm works with 1.1 not 2.0 ...
0
votes
1answer
252 views

Cannot connect to SSH intermittently , sshd is running, and other services are online and operating without disruption

So when doing this: ssh -l root myKVMinstance.domain.com i get this: ssh: connect to host myKVMinstance.domain.com port 22: Operation timed out at the same time while that is happening, i am ...
0
votes
1answer
99 views

How to place KVM VMs on several hosts in the same network, with one of the VMs as the DHCP server

I have a KVM host running on Centos. I have 3 Virtual machines installed on this host. Host is connected to a Nexus (Cisco). Virtual machine is able to get Internet. Everything is working fine. Now I ...
0
votes
1answer
474 views

KVM: pass-through SATA hot-swap drive?

I have a SATA hot-swap cage in my Linux box. Is it possible to pass-through the SATA disk which is injected in that cage to a KVM guest? I have multiple disks however the SATA port will be always the ...
0
votes
1answer
589 views

Simple KVM with NAT networking won't run

I'm trying to set up a test VM in KVM according to the steps described here: https://wiki.iac.isu.edu/index.php/KVM_Virtualization#Example_vmbuilder_Commands My host system is Ubuntu 10.04. This is ...
0
votes
1answer
331 views

How to find out Hosting KVM Server IP address from Virtual Machine

I have got large number of virtual machines running on 3 KVM servers.I would like to identify the host's server IP address/hostname from a guest machine.
0
votes
1answer
623 views

Error while creating VM using virt-manager on Xen

After a great struggle I got my XEN installed now I am using virt-manager and trying to create a VM. Since my H/W doesnt support full Virtualization using the Para Virtualization installation over ...
0
votes
1answer
615 views

How to permanently attach USB devices to a KVM vserver?

I run a Server using KVM and virt-manager (over SSH). Currently I have the following devices which I want/need in a KVm virtual machine: +----USB-HUB +- USB Smartcard Reader #1 +- USB ...
0
votes
1answer
525 views

installation error in kvm

after installimg kvm ,i can't load guest guest operating system it shows the following error Unable to complete install: 'internal error Process exited while reading console log output: chardev: ...
0
votes
1answer
950 views

apt-get update can not connect

i run a dedicated ubuntu 10.04 server. i use kvm/libvirt/virsh to run a virtual machine that's also ubuntu 10.04. i bridged the network (1 of 2 IPs is routed via NAT to the LAN, where my VM ...
0
votes
1answer
132 views

Ready-to-use kvm server-images for Rails-Apps?

I'm taking care of some Rails-Deployments. For this I use several KVM virtual machines like this: Apache Load-Balancer (mod_proxy) & HTTPS-Gateway foreach rails-app { Rails-Server ...
0
votes
1answer
250 views

Setting virtual interface names in KVM/Qemu (tap devices)

I have a few KVM machines that I put under a private network using tap devices. I have also setup their /etc/network/interfaces so that each one gets proper ip address. I copied my setup to another ...
0
votes
1answer
898 views

setting CPU cache size and model for KVM guest

Is there any possibility to create a custom CPU model for KVM Linux guests, or at least to modify parameters such as cache size and model name? I know I can set CPU features, topology and pinning and ...
0
votes
1answer
452 views

RDP to Windows XP guest on kvm constantly reconnecting after logon

ISSUE I have, after some days of "hard" work, managed to correctly configure kvm on a Centos 5.5 host. I have 2 VM running successfully. Since I only have one public IP address (for the kvm host) I ...
0
votes
1answer
131 views

Assign IP to a VM from external DHCP server

When i install a new vm it fetches its IP from the DHCP server already setup when we install kvm. I am maintaining list of vm mac-addresses and there corresponding IPs (that should be assigned) in my ...
0
votes
1answer
232 views

KVM wireless bridged networking mode not operational

Why does KVM not support wireless bridge networking mode, whereas VirtualBox and do it very well? parprouted doesn't help. I want to allow KVM guests to act as if they have a bridged network ...
0
votes
1answer
359 views

redirecting arbitrary tcp/udp in kvm

I've got a server with KVM on it, and multiple guest VMs. I'd like a way to redirect traffic from the host server to the VMs. Like, say, forward all traffic on port 2222 on the host to 22 on a guest ...
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votes
1answer
37 views

KVM Server error

I have installed KVM server in Centos 6.4 and i have created gluster storage pool in that gluster storage pool i have installed some linux and window VM's i have assigned 1GB RAM and 20 GD virtual ...
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votes
1answer
46 views

Implementing hardware virtualization for custom hardware

When using QEMU/KVM there are certain network adapters that are supported and emulated. If one wanted to emulate the guest OS's original network adapter (e.g - a Broadcom interface that was present on ...
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votes
1answer
180 views

Encrypt connection to Spice console in browser using HTML5 Spice client

At the moment i'm testing a way to connect to my VMs running on kvm-servers using spice and a browser html5 spice client I found. It was easy to set up, following this guide: ...
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votes
1answer
166 views

Import virtualBox appliance to KVM

Im new using KVM as a virtualization solution. Currently I'm using VirtualBox to manage my virtual machines in my personal computer, but I'm moving my virtualization to a Server, so I set up a Linux ...
-1
votes
1answer
272 views

We have Solaris 10 VM in KVM (ProxmoxVE) how to check if Solaris is using all cores?

I'm trying to figure out is VM Solaris 10 (which is virtualized with KVM on ProxmoxVE) using all allocated CPUs? Host HW is Dell poweredge r720. And find a way how to check that for example gzip on ...
-1
votes
1answer
135 views

Kvm poor cpu performance

I have running some Minecraft Servers in a Qemu VM over Libvirt, and the performance is only half good than on real hardware. Libvirt started the vm over: /usr/bin/kvm -S -M pc-1.1 -cpu ...