QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that performs hardware virtualization.

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Error Restoring Virtual Machine

I've gotten an error restoring a virtual machine. How should I resolve / troubleshoot this error: Error restoring domain: internal error Device 001:004 is already in use
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Bridge-utils installed on ubuntu 13.04 but unable to start the service

I upgraded my laptop Ubuntu 12.04 to 13.04. Before upgraded to Ubuntu 13.04, I installed qemu-kvm, bridge-utils, libvirt-bin & ubuntu-vm-builder. There its worked properly, After upgraded to ...
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SOLVED: KVM Can't Read Keymap File on Ubuntu 14.04

When I try to create a KVM domain with virt-install on Ubuntu 14.04, I get the following message: ERROR internal error: process exited while connecting to monitor: Could not read keymap file: ...
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booting freezes after used scheduler greatest stack depth error

I have built the linux kernel 3.14 with debug info. When I tried to boot it gives following error and after that booting freezes. Can somebody tell me how to fix this ? Linux Version : Slitaz in ...
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TightVNC shows the window cropped

I am running debian live cd in qemu (kvm), and when I connect to VNC via vncviewer localhost:5900 the window is cropped to some static width and height combination. Making window fullscreen or ...
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Secondary bridge only working at random in debian wheezy

We are currently migrating from vmware server to kvm. So far everything works smooth, with the exception of the secondary bridge. Our network layout is as follows: Firewall with 3 ports eth0 Public ...
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99 views

How to install Ubuntu 13.10 virtual machine on top of KVM running on Ubuntu 13.10

When I try to install LUbuntu 13.10 as a virtual machine using Qemu-KVM running on Lubuntu 13.10, I get a garbled screen when I start the virtual machine and/or when I start the installation process. ...
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247 views

How can I simulate usb storage device connection with qemu?

I'm writting a program for controlling usb storage device connections (this is a classic subject). All it's ok with my program, but now, I want to write some tests. So in order to do that, I realized ...
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29 views

Proper way for setting general policy and firewall rules with libvirtd

I'm just struggling with the firewall configuration of our new KVM Host. I think by now I understand how libvirtd implements networking, but I'm missing a way to set some decent firewall rules. To ...
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70 views

How to setup permission for virtfs in system libvirtd

I have troubles setting up the permissions for virtfs. I need to share a folder with several VMs in a way that user (same username, uid and gid on guests and host) can access it (have full ...
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123 views

How to start a virtual machine filled with qemu-nbd?

I migrated a Windows OS (entire disk) to a virtual machine on another host (Debian with qemu and kvm). I used Selfimage to export the disk. On the host, first of all, I created an empty virtual ...
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584 views

qemu emulator for raspberry

I am trying to emulate a raspberry pi on ubuntu. I have tried several ways using several tutorials but every time, the emulator logs this: scsi: 0:0:0:0 ABORT operation started scsi: 0:0:0:0 ...
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86 views

Xen VNC - VGABIOS Rom Missing

I've had a Xen server with VNC running successfully for almost a year now. However, recently, when I tried to connect to an HVM domain with VNC, it displays a blank screen. When I looked in the QEMU ...
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251 views

Mouse and keyboard not working in qemu emulation of beagleboard with latest angstrom image

I was trying to emulate an angstrom image for beaglexm in qemu on my Ubuntu 12.04 laptop. In a new window the image boots up and autologins into GNOME shell. But keyboard and mouse remains ...
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51 views

Running assembly program in RHEL

I am new to system administration and we are trying to install QEMU emulator, GCC for ARM and GDB to communicate with the QEMU/ARM program being executed in RHEL. I was having troubles installing the ...
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300 views

Installation of QEMU, GCC for ARM in RHEL

We are setting up a lab which has the QEMU system to emulate an ARM processor and run assembly programs. The lab is currently setup with the host operating system as Ubuntu. We are migrating the lab ...
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301 views

NFS server on qemu guest

I need to know how I can mount block devices, placed on a qemu guest system, from host. So in this case we have NFS server placed on guest system and NFS client on the host's side. There are a lot ...
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Preparing an initrd for qemu [duplicate]

I have compiled a bzImage but when I try to run it in qemu I get a kernel panic because I don't have an initrd file. So I create one by following the steps in this question but I cannot get it to ...