QEMU (short for "Quick EMUlator") is an open source machine emulator and virtualizer.

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QEMU sparc displays only a black screen

I'm trying to play with an old Redhat install on Sparc, so I do this to create a disk image: qemu-img create -f qed redhat.img 2G Then this to start it: qemu-system-sparc -bios ss5.bin -vga cg3 -g ...
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accessing core microarchitecure in QEMU, HOW?

I have two questions: 1) Is QEMU a full system simulator or a virtalization layer? 2) when it installed, Is it possible to access micro architecture elements of a core such as registers ,...? I need ...
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90 views

libvirt: “Failed to initialize a valid firewall backend”

What I'm tryna doing I'm trying to set up a virtual NAT network device without DHCP for libvirt on an Arch Linux host. What I've done so far # virsh net-define network.xml Network default defined ...
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29 views

qemu: emulated nic is too fast

On archlinux, I started a VM with qemu emulating a rtl8139 network card by giving it the following parameters: -device rtl8139,id=nic0,netdev=tap0 -netdev tap,id=tap0,ifname=tap0 After booting the ...
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19 views

Vagrant private network with connection to the Internet

We have a set of integration tests which spin up several virtual machines. These VMs communicate with each other but also needs access to the outside world (e.g. yum repositories). We're considering ...
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40 views

Get custom kernel parameter variable of booting qemu

Im currently using qemu on windows for testing my own linux distribution. its a embedded version built with buildroot. After building the distribution i have created a iso file. When i start the ...
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24 views

How to configure qemu with a raw drive, but have it not fail if the drive is missing?

I'm using Proxmox, which uses qemu under the hood. I have a vm that needs to access drives directly, so I have lines such as the following in my .conf: sata1: ...
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49 views

KVM/QEMU Guest mounting Host Storage

I'm running CentOS 7 on a host machine and I'm wondering the best practice to automatically mount a hard drive for a KVM guest. I've made an Illustration to help describe what I'm trying to do. The ...
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15 views

Creating a libvirt URI to hop to another host

I have a Qemu-Host running libvirtd which is properly configured (h0). I can only access this host via another machine (c0), which only acts as a gateway. Now I need to know if it is possible to get a ...
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1answer
538 views

QEMU with GPU pass through won't start

I'm running Ubuntu and trying to configure QEMU with a GPU pass through. I was following those guides: https://www.youtube.com/watch?v=w-hOr44oBAI ...
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24 views

KVM virtual Win 7 instance not genuine

Running kvm, qemu, libvirt... and have six virtual machines, five Linux, one Win 7. All the Linux instances are running perfectly as is the win 7 instance, but... After installing the Win 7 machine we ...
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Virtual Machine on Limited User Account

I want to run a virtual machine on my limited user computer. I do not care how slow it is I just need to get a VM going. I heard about QEMU portable but the website download is offline. Where can I ...
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203 views

Not able to boot Debian arm64 on Windows using Qemu

I am running a Windows machine and I want to emulate a Debian OS with arm64 architecture. I downloaded an ISO file to setup a fresh VM. I used the following command: qemu-system-arm.exe -cdrom ...
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74 views

Bridged qemu machine cannot receive packets, these are dropped

I've created virtual machine (ppc) with bridged interface (using bridge helper) on archlinux. Machine can send packet out, but cannot receive anything. I can see packets (dhcp discover,request and/or ...
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554 views

Unable to configure KVM (Qemu or Libvirt) on openSUSE Leap 42.1?

I simply want to run multiple VM (not at the same time). I want them to be stored in another partition (mounted here /run/media/shark/VM) and not in the default storage pool ...
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270 views

Need qemu to run headless on host, but still forward graphical output via x11

I have a headless host with qemu installed. I can ssh into the host, and forward x11 so I can view graphical output. However, when I try to run qemu, I get the following error: Could not initialize ...
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54 views

Communication with Windows Guest OS run in Qemu

Using a headless Ubuntu 14.04 server, I'm running a Windows 7 guest in Qemu to which I am passing through the GPU (for performance). I am writing an application for which part will be running in ...
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44 views

How to increase size of an ubuntu cloud image

I have been trying to start a VM using ubuntu cloud images. Now, the image size is very less, I am getting around only 2GB of space. Is there any way to increase the size? I tried qemu-img resize, but ...
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VM inside host VM cannot see avx cpu flag

I have an Ubuntu 14.04 server installed on a VM inside VirtualBox. This VM acts as my host for other VMs. I ran a Linux based image using qemu inside this host VM. The host VM has cpu flag avx but the ...
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84 views

Wanting to run x86 binaries in Crouton Linux on dev-enabled Asus Chromebook Flip (ARM)

Yes, I know this may be very esoteric. :) I have a few simple x86 programs which run fine using Wine in any stock x86 desktop Linux. None of them have any 3D graphics or unusual hardware needs. ...
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125 views

How to create a secure KVM/QEMU (libvirt) smb/cifs share host to client?

I run a Ubuntu Server 14.04.03 LTS as host machine and the same os version as virtual client (minimal virtual kernel) with KVM on the same machine. I run two physical Ethernet cards on the physical ...
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11 views

Accessing postgres DB from guest

I have win7 guest on qemu-kvm with NAT inteface. And want to connect to postgresql database running on host (port 5432) from guest. Configuring tap/bridge interface is the only way to solve this? I ...
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393 views

QEMU/KVM can't set qxl video ram size

I'm trying to enlarge video memory size of qxl-vga device. Guest os (windows 7) shows only 16mb of video memory available. I've installed windows guest tools. When I'm trying to set more video memory ...
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81 views

Centos 7 KVM cifs mount issues

I am having a issue with Centos changing my KVM images folder from the default to a Cifs Shared folder. Any time I try it, it returns a error like so: [root@localhost Centos_Atomic]# systemctl status ...
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33 views

Raspbian in qemu ssh not working

I recently downloaded qemu to emulate raspbian.It works but I wanted to show to a friend with ssh but when I write ifconfig and press enter they give me an ip address that not working when I try to ...
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50 views

How to convert qcow2 to VMDK in openstack kilo

I was trying to convert qcow2 to vmkd in Openstack Kilo version using the qemu img convert. qemu-img convert -f qcow2 osname.qcow2 -O vmdk osnamenew.vmdk But the converted image while booting in ...
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195 views

Installing VMs in CentOS 7 host from ISO?

I'm trying to install a CentOS 7 guest in a CentOS 7 host, using text only. I'm using simillar commands as: virt-install --name centos7 --ram 1024 --disk path=/var/kvm/images/centos7.img,size=25 ...
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Difference between an qemu instance with identical args started manually and by libvirt

I have a VM managed by libvirt. I'll call it ExampleVM here: Id Name State ---------------------------------------------------- 55 ExampleVM ...
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122 views

Cannot allocate memory QEMU

I'm currently running Windows 10. I tried to use QEMU on my PC to emulate Windows 98 Live CD, everything worked perfectly until I tried to allocate more memory than the default(128MB). I tried to use ...
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95 views

KVM / Qemu Virtualization Live-Snapshot

im running an Ubuntu 14.04 Host with KVM/Qemu (libvirt) as virtualization host. Now im here to ask for the best practise about creating snaphots for the whole VMs. i read much about a Live-Snapshot ...
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22 views

What determines the name QEMU will give a drive?

I am playing around with GRUB 2 as a BIOS for QEMU. I expected that I could just use hd0,msdos1 as the root for GRUB, but it looks like it is not that simple. When I boot a VM with qemu-system-x86_64 ...
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37 views

How to make Windows XP screen in qemu take size of the window?

I remember Virtualbox had a feature allowing it with some guest additions to make the screen of the OS in the virtual machine take size of the window. I’ve installed Windows XP in qemu that I use now ...
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144 views

raw img file virtual space extended but disk size still same

I've been trying to compile kodi in babanian os image by mounting it in my desktop pc with chroot. There is space issues occured and I create some space with commands below: # qemu-img info ...
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289 views

Copy files to qemu raspberry pi (host and guest computer is the same windows machine)

I am running qemu by : qemu-system-arm.exe -M versatilepb -cpu arm1176 -hda 2012-07-15-wheezy-raspbian.img -kernel kernel-qemu -m 256 -append "root=/dev/sda2" -net nic -redir tcp:2222::22 on a ...
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How to stop, start and check qemu's configuration?

This info should be easily available but apparently not. How can I dump the qemu host's configuration so I can see if I have properly enabled a certain feature? Also, how do I stop and restart qemu ...
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273 views

Use host's onboard/integrated graphics from a virtual machine

Is there a way to let a VM access/use a monitor connected to the motherboard's VGA port as if it were its own monitor with KVM-QEMU?
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77 views

Getting “No Such File or Directory” but the program exists in Debian armel

I’m running Debian armel in Qemu and trying to run an ARM program but am running into issues: user@debian-armel:~$ ls -lbat total 32 drwxr-xr-x 2 user user 4096 Sep 14 23:54 . -rw------- 1 user user ...
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81 views

QEMU using GRUB not responding to keyboard input

My operating system is Windows 7, but I am running QEMU inside VirtualBox because for several reasons that do not need to be listed here. Let it be known that I have run QEMU using the UEFI OVMF as ...
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116 views

How can I run Qemu with the “-nographic” option in Mac OS X?

Does anyone know how to run Qemu with the -nographic option in Mac OS X? The idea is to use the native Terminal for a text based operation instead of running inside Qemu’s own window. The -nographic ...
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234 views

Create “linked clone” or layered shared disks with QEMU

Does QEMU support a feature like VMware's "linked clone"? What I'm trying to accomplish: I'm setting up a test environment with a handful of VMs, that are all nearly identical. However, a fresh ...
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191 views

Installing KVM virtual machine hangs at “connecting to graphical console for guest”

I am using KVM to install a virtual machine on RHEL 7.0, but the installing hangs, and displays "connecting to graphical console for guest": The terminal log is like this: [167804.496139] ...
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784 views

Does qemu/KVM allow sound through Spice?

I'm setting up a Windows 7 virtual machine to try and eliminate my physical partition. I have it installed and working with Spice and the drivers from the fedora site: ...
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130 views

zfs on x86_64 on qemu on raspberry pi

I find when you try to ask for help for a bizarre problem, somebody inevitably tells you to solve your problem a different way, or they want to know what problem you REALLY want to solve, so here's my ...
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773 views

Installing QEMU for Centos 6.6

I tried to yum install qemu and it doesn't seem to be available. How do I get QEMU onto CentOS 6.6 especially the qemu-system-* to run ISO images ? My yum repolist: repo id repo ...
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223 views

qemu virtual machine send desktop switching command to host

I would like to set up qemu/virt-manager/spice so that I can run a VM full-screen on its own KDE virtual desktop. I have ctrl-alt-{up,down} set up as desktop switching shortcuts, but I need a way to ...
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96 views

Run qemu on separate tty (and X server?)

Is it possible to start a VM on a separate tty automatically, so I can switch between the host and guest through ctrl-alt-F{1,2}? I know I can start an X session manually, but I'd like to automate ...
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382 views

Save qemu VM state like in Virtualbox

I am used to the Virtualbox "save machine state" exit strategy, which is a handy way to let the host reboot without shutting down the vm. I recently switched to qemu because of its VT-x in VT-x ...
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91 views

qemu apt-get error failed to fetch

I am running a qemu terminal and trying to scp files into it. In qemu, I am running a linaro release. I have configured /etc/network/interfaces with auto eth0 iface eth0 inet dhcp I have also ...
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3k views

chroot: failed to run command ‘/bin/bash’:

I am trying to modify a kernel image before using it for qemu. I am trying to add a compiled binary to the image. I am using 64 bit Linux 14.02. What I am doing is, linaro-media-create --image_file ...
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127 views

Failed to start VNC server on `(null)': address resolution failed for localhost:5900 when trying to start qemu

When I try to emulation mips program, I have Failed to start VNC server on '(null)': address resolution failed for localhost:5900 when I try to start qemu: root@ubuntu:~/debian-qemu/be# ...