Questions tagged [qemu]

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

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How to pass pcspeaker to QEMU virtual machine?

I'm trying to figure out how to allow virtual machine to utilize pc speaker in 1U server that is used as headless QEMU-KVM virtualization host. I found following documentation: https://readthedocs.org/...
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How to make VM routable from home network

I have 3 guest OS on KVM/QEMU, all of them can connect to each other as well as the host. But my phone (home network) cannot access it. How do i make it routable from home network? Details -> Home ...
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QEMU/KVM emulating wacom-tablet

I'm trying to emulate an old machine and have working xserver with absolute input, I've managed to add wacom driver to the guest (and I suppose that's the best I can do). The wacom driver does not ...
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35 views

QEMU/KVM emulating vmware graphics

I'm trying to migrate to virtual and old physical machine with nvidia GPU. I've succesfully done it with virtualbox with vmware graphics emulation, worked like charm after some tuning. On the other ...
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Fedora unable to mount nfs due to firewalld

I am trying to create a nfs to share between my host and guest VM (run with qemu-kvm). I followed this guide ad this is the situation: host: cat /etc/exports /mnt/nfsshare 192.168.122.76/24(rw,sync,...
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KVM / QEMU - Confused by bridge ip address (on Debian host)

I have followed a few guides to getting a bridge setup on my Debian VM host The most useful I found to be this: https://linuxconfig.org/how-to-use-bridged-networking-with-libvirt-and-kvm I have read a ...
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QEMU installation is broken

I am trying to run a Windows 10 VM on Windows 10. What I did I downloaded QEMU exe, then got Windows Installation Media to get the Windows 10 iso file. Then I simply moved to the Windows 10.iso file ...
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libvirt / KVM/QEMU - Networks: What does “Open Network” do?

When setting up a network with libvirt & virt-manager, there is an option to choose "Open Network" as the "Network Mode" when forwarding traffic to a physical network. What ...
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Boot VM from USB on Windows host without admin rights

I have a Linux installed on a USB flash drive, and I'd like, when I only have access to a Windows machine with no access to boot order and no admin rights, to be able to boot from my USB drive with a ...
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155 views

virsh edit error: failed to get domain

I'm using KVM/QEMU and Virtual Machine Manager. When I run in terminal sudo virsh list --all and the output is correct; it shows the one VM I have: Id Name State ------------------------ - ...
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Running multiple instances of WhatsApp on the AVD emulator

I am looking for a way to run multiple whatsapp instances on a virtual android device (AVD) The goal: to have whatsapp instances on the server, for anyone who wants it, and the connection to WhatsApp ...
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QEMU: “Why did my PC restart”

After installing QEMU and putting the Windows 10 iso file in the same directory as where I downloaded QEMU, I ran these commands: qemu-img.exe create -f qcow2 -o cluster_size=2M win10.qcow2 50G qemu-...
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How to increase output buffer size in Windows command line window?

I am working with xv6 in WSL of Windows 10. After running make && make qemu-nox and quitting immediately from qemu, I need to check the output of make. But most lines of the output of make ...
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VM with VLAN trunk on KVM

what exactly do I need to configure on Ubuntu18-based QEMU/KVM server to pass a trunk with >1 VLANs to a VM on it? (basically the equivalent of setting VLAN ID to 4095 on a port with ESXi) Some ...
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qemu-nbd: Mount fixed VHD

I have a Fixed VHD file which I want to mount with qemu-nbd. I'm trying the command: sudo qemu-nbd --format vpc --connect /dev/nbd0 image2.vhd qemu-nbd: Failed to set NBD socket qemu-nbd: ...
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I need help getting started on Qtemu with my first and next virtual machines

Upon being started, the VM immediately closes. Have I selected the wrong chipset or f***ed up a directory? Please excuse the shortness of this post, there is no error message for me to go off of so I ...
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Xpenology Not Using Additional Space After Resizing HDD in Proxmox

I have Xpenology running using Proxmox and recently the 1TB storage capacity is almost used up, so I resized the 1TB disk to 2TB using Proxmox. After restarting Xpenology, even though the 1 TB is now ...
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How to transfer files from host to DOS QEMU C drive?

I downloaded MS-DOS 6.22 and I installed it on my qemu. Now I want to transfer files from host to my DOS QEMU C drive. Edit: My host operating system is 64-bit Linux (Debian).
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WinXP BSOD when run on Qemu

I have an old virtual machine on virtual box with WinXP, I converted it on raw QEMU format, I tried to run this image on Win10 and on Debian but I have this BSOD. This is the command line on Windows I ...
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ERROR: Virtual Raspbian on Qemu in Ubuntu

I am trying to emulate Raspberry-pi/Raspbian with QEMU on my linux subsystem. I followed this link and did the following steps $ mkdir ~/qemu_vms/ Download/copy Raspbian Wheezy to ~/qemu_vms/ Download ...
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How to fix the No bootable device on QEMU with Macbook Pro 2014?

I was trying to set up windows 10 insider version on my macbook pro 2014. However, when I run qemu-system-x86_64 -boot d -cdrom /Users/111/Downloads/Windows10_InsiderPreview_client_ARM64_en-us_21286....
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How to resize the filesystem of a non-partitioned raw image? (virt-resize doesn't do it)

I have a Busybox raw image; its layout is: # Name Type VFS Label MBR Size Parent # /dev/sda filesystem ext4 - - 100M - # /dev/sda device - - - 100M When ...
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Linux virtualization on Windows (KVM like)

I know it's possible to virtualize Windows on Linux using KVM and QEMU and get near native performances. The thing is I have a PC running Windows 10 and everything is setup perfectly so having to ...
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How to decide when QEMU quest is able to process packets?

I'm using QEMU with tap interfaces on the host in order to provide connectivity to the guests. I'm now trying to figure out a mechanism of deciding when a guest has successfully booted and is ready to ...
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How to emulate Windows 10 on a jetson nano with kvm : which kind of machine type should I use?

I would like to run a vm on my jetson nano,emulating windows 10 with qemu and kvm. As you probably already know,the jetson nano runs on arch64 / tegra platform. As first step I have recompiled the ...
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Arch enable hyper-v features

Got told on Server Fault to post this here. I am running on arch, and want to enable the following hyperv-fearures: vpindex synic stimer reset frequencies But I am running into an issue, where virt-...
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QEMU-KVM & CPU/RAM performance

On my brand new machine I have set up QEMU/KVM on Ubuntu 20.04 and I'm running multiple Linux guests without issues. What is causing me some headaches is to get the Windows 10 guest (for gaming) to ...
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QEMU: SYN/ACK ignored on host in host-only networking with tap interface

I'm trying to set up host-only networking between my Linux host (running Fedora 33) and a QEMU instance (a fork for Xilinx devices), more specifically between a bridge interface (host) and a tap ...
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How do I pin a process to a single CPU core?

I have a 2 core 2 thread cpu and I want to pin one core for a Windows 10 VM and keep the other for the Linux host.
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virt-manager QEMU filesystem share can write but not truncate files owned by another user but same group

Using virt-manager 2.2.1 on Ubuntu 20.10, I have a Debian 10 guest. In virt-manager, I've added a filesystem share with: Driver: Path Mode: Mapped Write Policy: Default Source Path: /A Target Path: B ...
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Does qcow2 format support multi-file image?

I have an 8GB virtual machine disk and want to put it on a FAT32 filesystem in qcow2 format. As you know, FAT32 supports maximum of 2GB per file. So, I'm curious to know whether qcow2 supports ...
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iptables: only allow specific mac addresses

I hope someone here can help me out with this as it's probably a really easy setup. I am on centos 8 -- disabled firewalld and installed iptables-services. I have one physical interface with a bridge ...
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138 views

How to completely disable mouse grab in qemu

I want to test bootable iso files with qemu. I feel very discomfort that when I click inside qemu window, the mouse gets grabbed and you need to press Ctrl + Alt + G to release it. In VirtualBox there ...
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Is it possible to add a partition table to an existing AIX ISO?

I've followed this tutorial to run an AIX on an x86 system: https://virtuallyfun.com/wordpress/2019/04/22/installing-aix-on-qemu/ One element of the tutorial is to get an AIX system ISO to install the ...
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Create qemu drive image from nand block device

I have an embedded system I want to run via QEMU to speed up development with. I have used sshfs to mount the remote root dir so I have easy access. The remotes filesysyem is on an nand chip via /dev/...
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Bitlocker on KVM/QEMU/virt-manager Windows guest using TPM passthrough

I have a dual boot installation on my Lenovo T480s: Windows 10 and Fedora 33. As I prefer working on Linux but need to have quick access to some Windows exclusive programs, I've configured QEMU (in ...
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qemu networking Centos 7 host

I would like to do the same as in VBox whit the bridged network interface in Qemu and I'm trying to bridge the eth0 device from the host but what i get it's a bridge in the host, like ! my ethernet ...
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Mounting hfs volume under MacOS Catalina

I'm running MacOS X Catalina. To be able to connect to an HFS volume created by QEMU I tried sudo mount -t hfs qemuhdd.raw /tmp/os9vm I got the following error: GetMasterBlock: Error 25 getting block ...
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QEMU VM doesn't start on Mac

QEMU VM doesn't start on Mac after installation (installation is ok, even reboots few times to install necessary updates etc) after quitting the app and then re-starting - black screen I tried ...
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qemu Windows VM fails if I change the SMP level

I created a Windows10 VM using qemu a LONG time ago and have copied it around to various servers and have been using it with different -smp levels (I start it just using command line arguments and I ...
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647 views

Virsh error, Failed to connect socket to '/var/run/libvirt/libvirt-sock': No such file or directory

I am trying to setup KVM, but when running certain wirsh commands like: $ sudo virsh net-define br10.xml or $ sudo virsh pool-define-as debian_pool dir - - - - "/home/$USER/VM" I get this: ...
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449 views

Hiding qemu virtualization in guest Windows 10

I know this will probably be a bit of a repeat but none of the several topics I have browsed and tried have worked out fully for me. I will try to give as much (necessary) info as I can, if there is ...
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384 views

How do I import qcow2 VM images in ovirt via Admin Portal?

With oVirt node and engine VM installed, I've added my qcow2 image to the export domain (/nfs/export). I've tried in both the base dir of export domain, and also in the following (where /nfs/export/...
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QEMU/KVM - Getting “Error connecting to graphical console: Error opening Spice console SpiceClientGtk missing” when trying to create a VM

I am trying to create a virtual machine using QEMU/KVM. I am getting an error: Error connecting to graphical console: Error opening Spice console SpiceClientGtk missing I have looked around but ...
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Resizing qemu images with backing file

We have a base image and based thereon multiple copy-on-write images (qcow). There are many pages (e.g., this SO post) that explain how to resize an existing image. However, I couldn't find an ...
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New QEMU images on NVMe: ZFS, or MDAM+LVM+LUKS+VDO?

I'm wondering if someone has experience with one or both options being considered, in the context of NVMe and/or VM images - and if the additional complexity of MDAM+LVM+LUKS+VDO is worth any ...
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54 views

How to convert Virtulabox VM to QEMU and preserve snapshots?

Is there a way to convert my Virtualbox Virtual Machine (host Linux Mint 20 x64, guest machine Windows 10 x64) to a QEMU/KVM virtual machine and preserve the snapshots? Such that I do not have to full ...
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183 views

Disable IPv6 in QEmu

Is there a way to stop QEmu from providing IPv6 connectivity to the guest by giving command line options to qemu-system-* while still keeping IPv4?
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Unable to run 32bit VM Guests on Ubuntu 20.04

I have an old 17" MacBook Pro that's too old for modern macOS with an intel i7-2720QM CPU. I've installed Ubuntu 20.04 on it, running Linux kernel 5.4.0-52-generic. Try as I might I can't get ...
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How to get QEMU to use a named Docker interface?

Question Is it possible to get QEMU to use a named Docker interface and network on the same host machine? Motivating exmaple: Let's say I have a DHCP server in a Docker container with static IP ...

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