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

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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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ssh over unix pipe or pty device [on hold]

Ok, I don't even know how to put this into words. I have a /dev/myDevice which automatically connects to some ssh server when opened. How do I connect to it with ssh? Is this even sane? If it's insane ...
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Networking and Samba from a quest OS running on qemu

I'm trying to test some software on a big endian system to ensure compatibility. My plan is to use qemu on Ubuntu 12.04 to emulate a MIPS system. So far I've been able to create the quest system ...
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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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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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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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674 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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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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VGA passthrough - Code 43 with KVM and libvirt on all AMD hardware

I've set up a system with an R9-270 and an ATI Rage (PCI graphics card, doesn't use radeon driver) on an FX-8320 and an ASRock 970 Extreme3 R2.0 motherboard with the intention of running Debian Wheezy ...
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Running X86 binaries on armv7

I am trying to run a SNBC USB printer on Raspberry Pi2. For that I need to copy the filter binary of the SNBC USB printer to /usr/lib/cups/filter. But the filter binary is compiled using a x86 ...
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Arch Linux in Qemu : Failed to access perfctr msr error

I got the Arch Linux (march build) iso file through bittorrent lately. I tried to run it in VM, but it only gets up to the main screen (The screen where you select what you want to do) shown below: ...
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Qemu overlay image size limit

I created a qemu ubuntu vm. Now I use overlay images as a quick way of creating vm's "on the fly". But what is the size limit for an overlay image? Is it the size of the "base" image? Or can it grow ...
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721 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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10 views

How to let Qemu autoselect a listening port for Spice?

I'm switching some VMs from VNC display type to SPICE. VNC display type offers a very handy to= parameter allowing QEMU to automatically use the first free port from a defined range: -display ...
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QEMU Aarch64 and networking connections

I just set up an ARM64 image using QEMU and I'm trying to access the internet from within the binary. The host OS(Ubuntu) receives internet from the eth0 interface. I have the tap0 interface set up. ...
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36 views

qemu command line management

I'm interested in qemu, specifically the kvm feature in Linux which is operated through the command line. I see there are a ton of features available for gnome-boxes and libvirt specifically. My ...
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“ifconfig -a” does not show any interfaces

I just set up a QEMU image with Ubuntu on ARM64 as per the instructions described here. However, ifconfig -a does not seem to show me an eth0 or eth1 interface as I'd expect. Why is that? ...
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Qemu and AARCH64

I'm trying to setup an ARM64 machine using QEMU. I ended up fetching the kernel and img file from here and here. I reached the above links from here. When I try to run the OS as :- qemu-aarch64 -m ...
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Gnome-boxes not able to see virtual machines after sleep

I am having a bit of trouble to solve this issue. I am using gnome-boxes to run my windows boxes for my school project purpose. When I boot the system, everything works just fine When I type : ...
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35 views

enabling vnc after using virt-install

I've created a virtual machine using virt-install with graphics --none. I want to enable vnc. I've tried virsh -c qemu:///system qemu-monitor-command vm171-SC-1 --hmp change vnc :3 but it doesn't ...
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No sound coming from Linux-based virtual machines under Qemu on Linux Mint 16 host - why?

I have been using Qemu and virt-manager for quite some time (years) now and it's only recently that I noticed I don't get any sound output from any of my Linux-based virtual machines — it's always ...
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How to send mouse and keyboard to Virt-Manager guest

I have a Windows guest in virt-manager running headless (no spice server) because video is output through a GPU (pci passthrough). But my question now is how to send the keyboard and mouse to the ...
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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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Setting up QEMU and MIPSEL : networking trouble

I have a MIPSEL machine running on QEMU. In order to enable networking inside my qemu MIPSEL machine, I use a bridge virbr0. First, I create the interface tap0 and bring it up. I do it as follows :- ...
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qcow2 and qemu-system-arm

I just tried booting up a Debian ARMel build using QEMU on my Ubuntu machine as follows :- qemu-system-arm -M versatilepb -kernel vmlinuz-3.2.0-4-versatile -initrd initrd.img-3.2.0-4-versatile -hda ...
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Qemu Linux(kernel with debugging symbols) and ARM

I'm looking for a Linux ARM kernel, disk image and initrd that is compiled with debugging symbols. I'm looking to debug the kernel using the qemu and gdb. Could you point me to an arm linux image that ...
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30 views

Windows XP virtual machine crashes installing driver for host-mapped Velleman K8090 USB relay card

I have an existing Windows XP (Win32) virtual machine running under Qemu 1.5.0 on Linux Mint 16. I wanted to test Velleman 8 channel USB relay card. There is a generic driver available, which I ...
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How to run Ubilinux / u-boot under qemu (x86)

I wish to test Ubilinux (http://www.emutexlabs.com/ubilinux) before flashing it onto my Intel Edison board, which currently has Yocto on it. I am able to emulate Yocto for Edison with qemu, running ...
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Using a rados block device as block device in libvirt qemu

What is the difference between using a rados block device in libvirt qemu with disk type='network' and disk type='block'? The ceph guide tells me to do the following: <disk type='network' ...
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Running bzImage in QEMU: Unable to mount root fs on unknown-block(0.0)

I compiled the kernel by doing make menuconfig and make. I was trying to run the bzImage in qemu, by doing qemu -kernel bzImage but it didn't work out with the error message: Unable to mount root fs ...
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Installing Ubuntu-13.0 Desktop in Qemu

Following are the details of my system: Fedora Core-18, i686. I am trying to install ubuntu in the qemu. Following are the commands I executed: qemu-img create ubuntu.img 8G qemu-system-i386 -hda ...
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574 views

Retrieve serial port information of a libvirt domain?

I'm trying to retrieve the serial port information, aka Source Path of a libvirt domain (using qemu/KVM machine): Serial Device 1 (Primary Console) Device type: pty Source path: /dev/pts/2 But ...
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Why Debian Jessie is turned off instead of rebooting after installing qemu-kvm?

I'm using a new stable Debian Jessie (minimal installation without DE and standard utilities). First of all, I set 'enabled' for Intel virtualisation in BIOS and installed qemu-kvm as usual: # ...
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1answer
437 views

Booting Solaris 10 or 11 for Sparc in qemu-system-sparc64

I'm trying to boot Solaris 10 or Solaris 11 for SPARC using qemu-system-sparc64 but keep running into problems early on. I'm using the DVD images sol-10-u11-ga-sparc-dvd.iso and ...
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1answer
71 views

Modifying files inside a snapshot (qemu img file)

I have taken a snapshot recently to assist me build VMs quickly with the operating system I desire (through virsh), however, every time I build a VM, I would like to modify few files inside the img ...
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virt-manager error “format=dir: 'dir' invalid format” when creating qemu VM with ISO

This is virt-manager 1.0.1 on Fedora 20. The server has libvirt 1.2.13-1, qemu 2.2.1-2 on Arch Linux. Go to File -> New Virtual Machine. Select Use ISO Image to install from then browse for it. ...
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Is there a way to emulate a wireless card in qemu / kvm?

Is there a way to emulate a wireless card in qemu / kvm? Or is there no point to this? Is it considered just another interface?
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Passthrough PS/2 keyboard to guest OS

OS Windows run on VM (ubuntu, libvirt, qemu-kvm). And I have PS/2 keyboard on host hardware. Is there any way to pass it to guest OS without lost of performance (maybe emulate USB keyboard with keys ...
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Why port forwarding does not work in QEMU? [closed]

How to redirect port 5555 of Host OS to port 80 of Guest OS? Host OS: Debian Jessie 64-bit Guest OS: Windows XP SP3 32-bit I'm using the following commands: qemu-system-i386 -enable-kvm \ -name ...
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ssh from host to guest using qemu

How do I setup ssh from the host to the guest using qemu? I am able to use port redirection when I boot the VM without any special parameters, as follows: /usr/bin/qemu-system-x86_64 -hda ubuntu1204 ...
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17 views

live-build strange symbols during boot

So I'm booting up my Debian live-build through QEemu and gets this strange symbols. Anyone know what it is?
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115 views

Configure KVM/QEMU with TLS?

New to virtualization and kvm and I have a problem when i try to create a virtual machine with spice: virt-install --name Windows-7-x64 --ram 2048 --disk path=~/kvm/images/win7.img,size=50 --vcpus=1 ...
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58 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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272 views

tunctl complains that device or resource is busy if used in /etc/qemu-ifup script

I have a following /etc/qemu-ifup script which is executed when I start /usr/bin/qemu-system-i386 binary: #!/bin/sh set -x switch=br0 if [ -n "$1" ];then /usr/sbin/tunctl -u `whoami` -t $1 ...
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qemu-nbd vs vdfuse for mounting vdi images

What's faster, qemu-nbd or vdfuse? Which support differencing images (snapshots)? I suspect fuse to be slow, but nbd seems to be some old stuff.
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Running Mac OS X under KVM/QEMU

Note to be removed in the future, so as to avoid confusion from answerers and mods edit: Forgot to add in the note, if anyone thinks this is the wrong stack-site to post this, please comment on why, ...
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208 views

Boot from virtual usb drive in qemu-kvm

I want to create multi-bootable USB with GRUB2. But I don't want to use physical USB stick to experiment with. How can I create virtual USB to play with it as it is real device using qemu? I want to ...
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1answer
47 views

How to start qemu virtual machines at boot time?

What are the best practices to start qemu hosts automatically at boot time under Debian Wheezy? I do not use any abstraction layer like libvirt and start my virtual machines manually with for example: ...
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33 views

How do I emulate N900 hardware? (armel, OMAP3)

Is it possible to emulate the Nokia N900 hardware on my laptop for development purposes? I've had a look at some emulators, and Googled, but I can't find anything relevant. I know there's the Maemo ...
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236 views

Socksifying a qemu-kvm using tsocks

I'm trying to socksify a qemu-kvm using tsocks, but I have no success. I don't know if qemu access directly the hardware, skipping the OS or something like that, but I wasn't able to do this feat. ...