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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How to copy KVM disk image to LVM

Problem I'm getting a No space left on device error when doing a dd command. I'm trying to move a KVM qcow2 file to an LVM partition and thought that the LVM partition needed to be the same size as ...
2
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1answer
458 views

Why are eth0 and vmbr0 (bridge) having the same MAC addresses?

I configured my Debian (with KVM on board) as following: /etc/network/interfaces: auto lo iface lo inet loopback auto eth0 iface eth0 inet manual auto vmbr0 iface vmbr0 inet static address ...
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2answers
732 views

Multiple IP addresses assigned to one KVM VM

System: OS: Debian 6.0 64-bit with KVM installed from packages KVM is managed with Cloudmin 6.4.kvm I have a /29 subnet from my host. The bridge is setup properly for each VM to have its own IP, ...
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1answer
100 views

Why is there a socket interface on the host and a character device interface on the guest for virtio-serial?

I am trying to establish a communication channel between the host and one of its guest virtual machine using kvm as a hypervisor. For this, I am using virtio-serial. To create the virtual machine, I ...
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1answer
118 views

virt-install ignoring vnc port/listen?

I'm trying to create kvm machine on remote host. The host is running debian testing. Did use this command: virt-install --name debian-test \ --os-type=linux \ --os-variant=debianwheezy \ ...
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1answer
995 views

KVM guest time shift on host reboot

I have installed Ubuntu server 12.04 as a KVM host, and created an Ubuntu guest that is also running Ubuntu server 12.04. The servers are in the AST time zone which is UTC + 3 hours. After setting the ...
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1answer
275 views

Bad Mumble control channel performance in KVM guest

I'm running a Mumble server (Murmur) on a Debian Wheezy Beta 4 (x86_64) KVM guest which runs on a Debian Wheezy Beta 4 (x86_64) KVM hypervisor. The guest machines are attached to a bridge device on ...
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1answer
488 views

Can KVM CPU assignment count differ from physical hosts CPU count?

I have read this question. I knew already that I could for example, have a quad core machine with four guests each having two vCPUs. As they don't all be require 100% CPU usage all the time, the ...
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2answers
2k views

Can not boot CentOS VM using VirtIO in KVM

I converted qcow2 image to raw and changed I/O bus to VirtIO for a VM. now I can't boot that VM. I Installed VirtIO driver with following command: mkinitrd --with virtio_pci --with virtio_blk -f ...
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6answers
928 views

Will the OS crash if the system partition can't be access for a short period?

An operating system is installed in a virtual machine environment, such as VMWare or KVM. A network shared disk volume (e.g., iSCSI disk) is used as the OS system partition. Heavy traffic is running ...
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1answer
1k views

Connecting to a KVM guest OS in Ubuntu

I am lost on this. Basically I am trying to set up a Ubuntu Server 10.10 as a virtual machine by using KVM. Everything went smoothly and I can even sudo-apt get packages from the guest OS. Now, ...
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1answer
1k views

ZFS virtualized on an LVM volume

We've got some large SATA disks kicking around, and I've been toying with the idea of throwing them in a KVM host and installing a FreeNAS VM to manage them. I'd be adding these via LVM to the host, ...
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0answers
84 views

Apache bench failing with error “No route to host”

Got a new dedicated box. Installed CentOS 6.5 Installed KVM Installed a CentOS 6.5 guest rsync'd websites/database/settings etc over from existing VPS. Set up "dedi.mydomain.com" in DNS to test it ...
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2answers
319 views

Why VM cannot get the public IP I have from provider?

I have a KVM-Host (on Debian) with root@kvm-host:/# cat /etc/network/interfaces auto eth0 iface eth0 inet manual auto vmbr0 iface vmbr0 inet static address 176.x.y.133 netmask 255.255.255.224 ...
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1answer
184 views

What are the differences in the configuration of the network on Proxmox (KVM)?

I have a dedicated server, one main public IP from /27 and two single public IPs also from the same /27 (I think the provider manages single IPs using the VLAN tags). I want to have a KVM running on ...
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1answer
118 views

KVM guest has a wrong outgoing ip address

I have a KVM host with a bridge configured on eth0 that has a public ip: auto br0 iface br0 inet static address xx.xx.aa.111 netmask 255.255.255.0 network xx.xx.aa.0 broadcast xx.xx.aa.255 ...
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1answer
2k views

Use one NIC to create multiple interfaces for Linux KVM

I am working on a thesis research project, and I am having some difficulty figuring out how to make one NIC spawn several "bridge" interfaces such that each KVM VM can be seen on the local network. I ...
0
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1answer
829 views

Debian Squeeze guest running under KVM, how to get serial?

I've just got it running on Ubuntu, have installed everything but the kitchen sink. Got virt-console, virt-manager, running debian Squeeze, everything works. But... I don't want to connect via vnc. ...
0
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1answer
564 views

Firewall on a KVM host, prevent access to VM:s

I have a Linux machine running KVM with several VM:s, all have public IP:s. For the time being I have everything routed through a bridge (br0) and this works well. I also need a firewall on the host ...
0
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3answers
3k views

Convert directory to QEMU/KVM virtual disk image

I have a directory filled with data at /var/backups/disk1 that I want to convert into a virtual disk image which I'll then be able to boot using QEMU or KVM (the directory contains the file system for ...
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1answer
1k views

Adding a bridge for my two guests in Debian with KVM

I'm trying to add a two tap0 and a tap1 for my to guests. I'm running Debian with KVM. Each time i restart the server after putting this in /etc/network/interfaces/ the server gets unreachable. Why ...
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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 ...