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

learn more… | top users | synonyms

0
votes
0answers
69 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 ...
1
vote
2answers
439 views

Virtual machines: QEMU, VirtualBox

When I use a virtual machine on my i5 laptop, does it emulate every instruction or does it run normally? How much is the speed decreased? Especially I am interested in QEMU and VirtualBox; how do ...
0
votes
1answer
45 views

How to bridge networking in this nested virtualization case?

This is a follow-up for my earlier question. Based on feedback from Daniel B and Deltic, I switched from VirtualBox to QEMU, which can handle 64-bit guests on a VM as a host (Hyper-V, in my case) - a ...
6
votes
1answer
5k views

How to boot a physical Windows partition with qemu?

I have gentoo and windows 7 installed alongside on my only hard drive. I want to start my windows install from within gentoo through qemu. Boot menu works fine but windows bluescreens on me soon after ...
1
vote
1answer
11 views

How do i update available versions for operating system types in virt-manager

How do i update available versions for operating system types in virt-manager? For example for Ubuntu, only up to Ubuntu 14.04 LTS is in the menu but I'm installing Ubuntu 16.04 LTS. Installation ...
1
vote
0answers
24 views

QEMU/KVM: USB3 passthrough to FreeBSD

I'm making my first steps in FreeBSD, so please excuse any possible "linuxism". My goal is to run FreeBSD 10.2 inside virtual machine with QEMU/KVM and allow USB3 network card passthrough from the ...
0
votes
1answer
3k views

Converting .qcow2 V Hard Disk into .VMDK (Windows/VMWare)

Is any way to convert a .qcow2 into .vmdk on Windows 7 64-bit using VMWare Workstation? i did that using a tool qemu-img in my linux host (SLES11): qemu-img convert -f qcow2 vdisk.qcow2 -O vmdk ...
3
votes
2answers
559 views

Qemu user mode networking doesn't work

I try to use network in guest system. I installed an OS in a virtual machine, but I did not get the network configured. When I try to ping, for instance google.com I get the IP address for the domain, ...
0
votes
1answer
83 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 Linux,...
0
votes
0answers
59 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 ...
2
votes
1answer
1k views

How To Change The Floppy Image Of Qemu?

I'm developing my own OS, but I'm having some problems with Qemu, because I need to change the floppy image from grub.img to os.img while the emulation is running, but how can I do this?
9
votes
4answers
17k views

How do I convert an .img file to vhd?

I have an image file (linux based image) and want to convert it to VHD so that it can be used to create hyper-V VMs. I used "qemu-img convert" to convert raw to vpc format, but vpc doesnt work for ...
0
votes
1answer
285 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 ...
0
votes
1answer
14 views

How to quit QEMU monitor

I'm running QEMU on Linux without GUI. After running starting my custom kernel with QEMU, I can't kill and return to host by pressing Ctrl+C. Is there any way to get back to host OS?
0
votes
0answers
21 views

How to install OS using Rescue Mode?

What we have: A server with a Linux distribution on it. No physical access to that server. The server can be accessed via Serial Terminal or via network using SSH, for example. I can also boot that ...
0
votes
0answers
48 views

How to boot Windows 7 UEFI recovery partition?

I've got an image of a hard drive that won't boot from within a Qemu VM. I managed to get UEFI working using OVMF, but it still won't give me an option to boot the recovery partition. Given that I ...
1
vote
1answer
20 views

Emulating PPC Arch on linux

I am currently trying to get a PowerPC architecture emulated running using qemu-kvm on my centos box. I currently have qemu-kvm installed however I see a lot of tutorials https://gmplib.org/~tege/...
1
vote
0answers
622 views

qemu-kvm Windows 7 GUEST with vga passthrough doesn't work

Ok so I have a qemu-kvm Win7 VM setup. When setting it to use the standard vga output "-vga std" it works fine. Windows loads up, displays, no problems. If i set -vga none \ -device vfio-pci,host=...
0
votes
0answers
7 views

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 ...
6
votes
1answer
2k views

QEMU within VirtualBox and bridged connections all the way down

I'm trying to get an ARM QEMU system out on my LAN. I tried running QEMU directly from Windows (Windows 7 x64), with success except I could not get a TAP adapter to bridge to my wireless connection. ...
1
vote
0answers
177 views

How to boot a USB 3.0 SATA HDD inside a Windows 7 Qemu Virtual Machine

I have a Windows 7 VM, that I would like to recognize a SATA HDD that is plugged into a Voyager Q (USB 3.0 "enclosure"). I have tried various commands, and tried logging the output of the command ...
1
vote
0answers
11 views

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 ...
1
vote
0answers
47 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 ...
3
votes
1answer
852 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 https://www.pugetsystems.com/labs/articles/...
0
votes
1answer
33 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: /dev/disk/by-uuid/f203be0a-4135-4964-...
0
votes
0answers
33 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 ...
4
votes
3answers
4k views

vga-passthrough with kvm/qemu on optimus-capable laptop

i have an asus n550jv laptop with the following output from lspci -nn | grep "VGA|3D": 00:02.0 VGA compatible controller [0300]: Intel Corporation 4th Gen Core Processor Integrated Graphics ...
2
votes
1answer
362 views

Control fan speed under linux without nvidia drivers

I have quemu-kvm configuration like this - IGP on host (linux) and Nvidia on guest (windows). I blacklist nvidia drivers under linux (arch dist.). Is there a way to set GPU fan speed under linux (it'...
0
votes
1answer
69 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 ...
0
votes
0answers
83 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 ...
1
vote
1answer
20 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 ...
0
votes
0answers
30 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 ...
1
vote
0answers
790 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 /var/lib/libvirt/images/...
0
votes
0answers
5 views

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 ...
0
votes
1answer
344 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 debian-...
2
votes
0answers
97 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 ...
1
vote
1answer
426 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 ...
3
votes
3answers
5k views

Installing Windows 8.1 64 on Qemu Fails - no disk can be found due to Virtio driver issues

I'm unable to install Windows 8.1 x64 with the following steps on a qemu virtual machine: qemu-img create -f qcow2 Windows8.img 20G qemu-system-x86_64 -machine pc,accel=kvm:tcg -cpu host -m 2048 -...
1
vote
0answers
16 views

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 ...
0
votes
0answers
105 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. I'...
0
votes
0answers
147 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 ...
0
votes
0answers
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 ...
0
votes
1answer
365 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 ...
0
votes
0answers
551 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 ...
1
vote
0answers
102 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 ...
0
votes
0answers
41 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 ...
0
votes
0answers
246 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 --...
0
votes
0answers
8 views

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 ...
0
votes
0answers
175 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 ...
0
votes
0answers
106 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 ...