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

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virt-manager PCI passthrough gives error “No IOMMU Found” even w/ Intel IOMMU enabled

I am trying to set up PCI passthrough in virt-manager to grant my Debian Wheezy guest VM access to my laptop's Intel Centrino N wireless card. The Debian default kernel has Intel IOMMU enabled, and I ...
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550 views

How to migrate from Proxmox to VMWare?

I am wondering how it is possible to migrate a full hardware VM in Proxmox (qemu) to a full hardware VM in VMWare (vmdk). I have been searching all over the place, and it seems almost impossible to ...
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587 views

Qemu 2.0 Windows guest - mouse stops working (vnc) when using usb-passthrough

I have installed Qemu 2.0 on an Ubuntu Server 14.04 LTS computer. I use Qemu to run multiple virtual machines. One of them is using Windows 8.1 Pro (x64) and is used for back-ups. The guest runs fine ...
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Unitary testing: emulating hardware connection or disconnection

I'm writing a program using libudev. And I want to write some tests. But, one of the functionalities of the program has to do with an usb drive being connected or disconnected. I've read plenty of ...
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running kernel on QEMU

I face this message: Failed to execute /initKernel panic - not syncing: no init found. Try passing init=option to kernel. I am using this command line: qemu-system-x86_64 -hda disk.img -kernel ...
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Qemu: No file system could mount root (unable to mount roofs)

In Linux, I've created the root file system (rootfs) by following commands: dd if=/dev/zero of=ramdisk.img bs=1M count=4 mkfs.ext2 ramdisk.img sudo mount -o loop ramdisk.img rootfs sudo cp init ...
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108 views

No network interface for the lan9118 emulated on QEMU 1.4.0 overo machine

Im using QEMU 1.4.0 Ubuntu 13.04 distribution. Im trying to make the virtrual machine part of the host network so Im ussing this command: sudo qemu-system-arm -M overo -m 1024 -sd ./test.img -clock ...
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omap3530/3630 emulation on QEMU for overo and beagle machines

On QEMU's source code for beagle and overo I can see that the cpu emulated is the OMAP3430. I will like to know if it's a way to make QEMU emulate OMAP3530/3630 cpu's for those machines? On bealge : ...
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125 views

Creating a Virtual filesystem to boot linux

I am trying to boot the linux kernel (bzImage) in QEMU but have had issues. After asking on U&L I found out that my problem was that I was booting the kernel without a filesystem to boot from. So ...
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483 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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358 views

Cannot install Debian on QEmu-arm

I'm trying to run Debian 6 network install with this command: sudo qemu-system-arm -M versatilepb -kernel ./vmlinuz-2.6.32-5-versatile -initrd ./initrd.gz -hda ./debianlxde.img -m 256 -append ...
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193 views

Place grub on virtual disk

To learn about Linux startup process I placed grub in a disk image file and tried to boot using qemu. I currently has not put any kernel image into the drive just grub. I installed grub using kpartx ...
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894 views

how to use qemu to run build root linux images?

I have compiled an embedded linux with build root for i386. I didn't edited much, just defaults. Now I want to run it under qemu. But the only thing I see is this: I'm running qemu with these ...
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3k views

Installing qemu-img on ubuntu 11.04

I am developing a linux kernel and I am trying to to debug it in QEMU. I want to be able to run it in QEMU but it stops because I do not have a virtual hard drive to boot it(using the -hda command). I ...
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135 views

qemu can't run linux kernel

I saw this question and I did pretty much the same but I enabled initrd in configuration to use temporary root file system and no other modification but I still get this error on: qemu -kernel ...
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921 views

QEMU package not available for RHEL 64 bit

I am installing QEMU in RHEL. In 32 bit OS (i686 architecture), if I run the command, yum install qemu, the installation of QEMU takes place. However, in 64 bit architecture (x86_64), if I run the ...
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2answers
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shared LVM storage between KVM virtuals

I'm messing around with KVM and different storage options for sharing between virtual machines. I have an LVM volume group defined as a storage pool for libvirt. I've defined a volume and attached it ...
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41 views

No network interface in QEMU

My network interfaces never shows up in my guest computer. I'm compiling a linux kernel (3.3 I think) from scratch with default settings + Symbol: NE2K_PCI [=y] Type : tristate Prompt: PCI NE2000 ...
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516 views

Solaris 10 installation on KVM constantly reboot

Successfully installed Solaris 10 sparc on KVM. However when I restarted the VM it doesn't go to login screen but just constantly reboots. I've read different documents link1 link2 link3 but none of ...
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294 views

What is qemu-img consistency check?

I would be glad if someone could explain the meaning of qemu-img check <filename> command. Man pages provide very poor information about it: check [-f fmt] [-r [leaks | all]] filename ...
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469 views

kvm usb modem passthrough

I'm trying to set up a USB modem passthrough in kvm virt-manager. The host is Fedora 20. The guest is Centos 6 $ ifconfig wlp0s29u1u6: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ether ...
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170 views

How much success can I expect with Qemu On PowerPC Linux?

I'm on Ubuntu 12.04 for PowerPC and I installed Qemu just for kicks, having experience using it in the past to build an iso for an arm tablet, and upon doing a search I found this installed on my ...
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qemu: how to access host via sftp

I started a guest vm with qemu-system-x86_64 -net user -net nic -redir tcp:10022::22 -m 500 -hda op.img From the guest, I'm able to ssh the host machine, but can't connect via sftp The command I ...
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22 views

Using ks.cfg with virt-install?

I've been trying to get a virtual machine working with a cfg file on centos but unfortunately, I'm getting the error that ks.cfg file does not exist. Below is the command I ran to enable the VM. ...
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22 views

Looking for a new conf for HA Data Server and Virtual Machines with Glusterfs

I own three HP server for lots of users and email, web and a development machine. I want to make my virtual machines to be available all times, but have some issues. My configuration is as follows: ...
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54 views

How to enable Vesa driver in qemu

I am running Red Hat 7 into a VM using virt-manager (qemu) and it seems that it uses by default, Cirrus driver: 00:02.0 VGA compatible controller [0300]: Cirrus Logic GD 5446 [1013:00b8] (prog-if 00 ...
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12 views

Geting error “Must specify either driver or file” using physical disk in QEMU [duplicate]

I want to install windows 10 64 bit but my current verson of windows is 32 bit so it is unable to run the setup.exe file so I booted into live ubuntu 14.10 64 bit and installed qemu to use my current ...
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53 views

Geting error in qemu “No such file or directory”

I want to install windows 10 64 bit but the my current verson of windows is 32 bit so it is unable to run the setup.exe file so booted into ubuntu 14.10 64 bit and installed qemu to use my current ...
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82 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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301 views

running qemu on Fedora20

With Fedora20 and built from sources qemu-2.1.1, I'm experiencing issues to run qemu with non-root privileges: % qemu-system-x86_64 -hda vdisk.img -m 512M -netdev ...
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vdi image wont boot after converting from raw format

I created a virtual disk from a live archlinux instance following this article which is bootable and works. to summarize: > fallocate -l 4G archlinux.raw > mkfs.ext4 -F archlinux.raw > ...
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222 views

QEMU fullscreen mode on external monitor

I recently purchased an external monitor which I succesfully connected to my Lenovo Thinkpad and the accompanying Lenovo Advanced Dock via a DVI-D cable and it works fine so far. Unfortunately, I'd ...
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46 views

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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60 views

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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307 views

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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36 views

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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30 views

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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93 views

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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144 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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1answer
799 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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1answer
125 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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1answer
150 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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1answer
858 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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500 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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475 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 ...