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

learn more… | top users | synonyms

3
votes
0answers
39 views

Use case for qemu-static for same architecture

I just discovered that the 64bit amd version of the Ubuntu package qemu-user-static contains the binary /usr/bin/qemu-x86_64-static. Normally, qemu-user-static is used for emulating another ...
3
votes
0answers
203 views

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 ...
3
votes
0answers
400 views

Why does saving a KVM-QEMU VM requires additional memory?

I have three VMs running on Red Hat Enterprise Linux with 8 GB RAM, each of the VMs has 3 GB allocated, and I also run a 512 MB VM. If we also consider the guest OS's memory usage (usually 1.5 GB due ...
3
votes
0answers
356 views

Migrate a qcow2 image between storage pools

I have 2 storage pools. host_images (directory storage pool) remote_images (nfs storage pool) How do I copy qcow images from remote_images to host_images using libvirt APIs? I've tried using the ...
3
votes
0answers
290 views

Getty not starting in qemu

I'm trying to get running an ARM based Debian inside qemu. As a rootfs I'm using structure from embeddedarm 2gb sdcard image with versatile 2.6.24 kernel downloaded from fedora qemu tutorial site. At ...
2
votes
0answers
918 views

Why can't the kernel run init?

I've downloaded the Raspbian image on this page. I'm trying to compile a kernel that can be used to boot the image within qemu. I downloaded the Linux kernel source from kernel.org and ran: make ...
2
votes
0answers
106 views

Problems with overall ceph performance with QEMU

I am experiencing some performance problems with my QEMU KVMs on my ceph cluster. The cluster has 4 nodes with 4x1TB drives each, 48/64GB RAM, Intel Xeon and AMD Opterons. They are interconnected by ...
2
votes
0answers
339 views

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 ...
2
votes
0answers
209 views

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?
2
votes
0answers
199 views

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. ...
2
votes
0answers
56 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 ...
2
votes
0answers
783 views

How to convert the qemu parameters for an osx guest for libvirtd

I managed to have an osx guest running in qemu with the following commands: // create the virtual image $ qemu-img create -f qcow2 mac_hdd.img 35G // .. install osx ... // start the guest $ qemu-...
2
votes
0answers
145 views

Can I disable all linux graphics adapters at boot?

I think I would like to try a VGA-passthrough of my primary (and only) nVidia graphics adapter via qemu and vfio to a virtual machine. As near as I can tell, I meet all of the other qualifications ...
2
votes
0answers
107 views

FC20 - Remote Desktop to QEMU Host

I've got a Fedora 20 Workstation that I'm trying to enable desktop sharing on. The additional complication is that this Workstation is also running QEMU for local virtual machines. I've followed the ...
2
votes
0answers
265 views

USB ethernet device not working in VM

I'm having trouble getting a USB ethernet device working in a qemu-kvm/libvirt VM. The problem is that even though the guest OS sees the USB device just fine it can't mount it. lsusb on the guest ...
2
votes
0answers
524 views

persistent network interface naming and kvm

I wonder why my network interface is still named eth0 in my kvm guests. udevadm just outputs # udevadm test-builtin net_id /sys/class/net/eth0 2> /dev/null ID_NET_NAME_MAC=enxc2184ae7ab3f I ...
2
votes
0answers
523 views

What is the structure of Libvirt Qemu VM dump/save files?

I need to do some exploration of Qemu-KVM virtual machines physical memory (particularly I need to check the fact of the physical memory intersection). In order to do that I'm trying to save VM's ...
2
votes
0answers
232 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 ...
2
votes
0answers
978 views

Qemu doesn't boot kernel after “Uncompressing Linux… done, booting the kernel. ”

I've compiled qemu for s5pc110 (it's from http://gitorious.org/samsung-linux-platform/qemu, somebody had added support for s5pc110), version 0.12. But when I load the kernel: qemu-system-arm -M ...
1
vote
0answers
10 views

VM host management in case of Linux bridge

I have a virtual-machine host(vm-host) which runs two qemu-kvm virtual machines in tap mode. This means that network topology looks like this: As I need to manage vm-host over VLAN 123, I see three ...
1
vote
0answers
36 views

Use of virtio on QEMU without KVM

I want to write a simple driver for use inside a QEMU virtual machine, which will be communicating with the host through a respective backend special virtual device. The said driver and backend ...
1
vote
0answers
19 views

qemu-img convert burning CPU for nothing

I'm trying to reduce the usage of a qcow2 image. I did the following: qemu-img convert -p -f qcow2 -O qcow2 my_img.qcow2.backup my_img.qcow2 I outputs 200192 bytes and progress is stuck at 0.00%. ...
1
vote
0answers
13 views

understand “-netdev” option in qemu

When I start qemu with -device e1000,netdev=network0 -netdev tap,id=network0,ifname=tap299,script=no,downscript=no, then am I correct that this id=network0 creates an association between vNIC and ...
1
vote
0answers
38 views

Libvirt: no way to use isa bus?

I found a way to run Windows95(I'm a little nostalgic and I use old systems for testing) with qemu /usr/bin/qemu-system-i386 -L pc-bios -m 64 -hda /home/user/.local/libvirt/images/win95.img -net ...
1
vote
0answers
38 views

Performance issues running Linux Mint on qemu-kvm - maybe run in textmode and use remote graphics for administration?

we are running virtual servers on kvm-qemu, using debian wheezy as a host system. Unfortunately one server is based on Linux Mint 17.3. One big issue is the performance of Linux Mint based on kvm. ...
1
vote
0answers
61 views

qemu-system-arm problems adding second NIC/bridge

I am running Qemu under a host with two bridge interfaces and would simply like to bridge them to guest NICs. All of this works fine when bridging one NIC either by creating a bridge manually or using ...
1
vote
0answers
42 views

How do I specify an alternative bridge interface (not br0) when using qemu-bridge-helper

By following the instructions found at http://wiki.qemu.org/Features/HelperNetworking I can configure qemu with qemu-bridge-helper, however, I can't figure out how to pass a bridging interface option ...
1
vote
0answers
30 views

How to debug a bash script in a qemu-arm chroot

I'm running a debian debootstrap script which creates an arm system. However, the script fails at some point and the error message does not really help. So I'll have to do some more debugging which is ...
1
vote
0answers
103 views

Virt-manager Permission Denied when accessing NFS pool

I'm currently having this error when I'm trying to install a Virtual Machine on my NFS share. i've added my NFS share (coming from FreeNAS) to a Storage Pool on the virt-manager Another issue is ...
1
vote
0answers
137 views

/dev/kvm is missing from system supporting kvm-virtualization

I'm trying to enable kvm-virtualization for Android virtual devices. In order to do so, I followed this guide and did the following: Checked, if kvm-virtualization is available: user $ grep --color ...
1
vote
0answers
184 views

Running QEMU inside XEN virtual machine

Is it possible to run QEMU inside XEN virtual machine? I tried to enable the XEN nested virtualization for with following options to virtual machine configuration file in /etc/xen/vm1.cfg: hap=1 ...
1
vote
0answers
22 views

Golden image updates in qemu

Consider that there are 100 windows virtual machines coming from a single base image and each vm is added to domain along with minor other machine specific settings which can be done by a script. ...
1
vote
0answers
33 views

ISC DHCP Server - Qemu system

I've been trying to get dhcp address by an ISC Server. I have one DHCP Server and one qemu server with multiple image tiny core. Hopefully this ascii drawing illustrates the topology: Over the qemu ...
1
vote
0answers
119 views

How to run Windows with GPU virtualization?

A year ago I switched to Ubuntu for my primary OS, which has worked out just fine. Every now and then I want to play computer games and while using Wine often works, I can't get all of the games that ...
1
vote
0answers
101 views

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 : ...
1
vote
0answers
508 views

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: # ...
1
vote
0answers
239 views

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 ...
1
vote
0answers
347 views

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, ...
1
vote
0answers
418 views

Converting .vhd file to .raw - File is too small and does not boot

I have a Hyper-v .vhd file I am trying to convert to .raw for Proxmox. However every time I convert the size is less than half of the actual disk space used and when I import it doesn't boot. I ...
1
vote
0answers
321 views

(virt-manager:4796): Client failed to connect to the D-BUS daemon / Unable to connect to libvirt

I would like to boot and run Windows 8 with kvm or xen while I'm running Debian Wheezy. Actually I have installed Windows 8 on the external USB disk and Debian Wheezy on the hard disk sata. I'm tryng ...
1
vote
0answers
22 views

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 ...
1
vote
0answers
1k views

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 ...
1
vote
0answers
227 views

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 : ...
1
vote
0answers
150 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 ...
1
vote
0answers
585 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 ...
1
vote
0answers
386 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 "root=/...
0
votes
0answers
12 views

Share a folder between Linux host and Windows guest VM

I'm trying to share a folder between my main OS (openSUSE 42.1) to a guest Windows 7 virtual machine, but I'm unable to set it up properly. I access the VM from virt-manager, and I've read that the ...
0
votes
0answers
10 views

QEMU-KVM for Debian Stretch sometimes disables a passed-through USB keyboard

I am running Debian Stretch on an AMD A4-5300 APU using a PCI passthrough setting with vfio-pci, with my sound chip and my graphics card assigned to my VM as per this guide here and with my keyboard ...
0
votes
0answers
12 views

Proxmox hook for VMs

We have Proxmox installation. We want to execute a command after new VM was added. It is required for QEMU port redirection since setting redir option is not avaialble on GUI: qm set 102 -args "--...
0
votes
0answers
12 views

Input/output error when copying Qemu raw image

I'm trying to clone a VM on a CentOS 6 server using virt-clone, but every time I run it I get: ERROR failed reading from file '/var/lib/libvirt/images/myimage.img' : Input/output error I've also ...