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author	date	footer	header	section	title
Martin Wimpress	February 4, 2023	quickemu	Quickemu User Manual	1	QUICKEMU

NAME

quickemu - A quick VM builder and manager

SYNOPSIS

quickemu [OPTION]...

DESCRIPTION

quickemu will create and run highly optimised desktop virtual machines for Linux, macOS and Windows

OPTIONS

--vm: vm configuration file

You can also pass optional parameters

--braille: Enable braille support. Requires SDL.
--delete: Delete the disk image.
--display: Select display backend. 'sdl' (default), 'gtk', 'none' or 'spice'
--fullscreen: Starts VM in full screen mode (Ctl+Alt+f to exit)
--ignore-msrs-always: Configure KVM to always ignore unhandled machine-specific registers
--screen <screen>: Use specified screen to determine the window size.
--shortcut: Create a desktop shortcut
--snapshot apply <tag>: Apply/restore a snapshot.
--snapshot create <tag>: Create a snapshot.
--snapshot delete <tag>: Delete a snapshot.
--snapshot info: Show disk/snapshot info.
--status-quo: Do not commit any changes to disk/snapshot.
--version: Print version

EXAMPLES

quickemu --vm ubuntu-mate-22.04.conf: Launches the VM specified in the file ubuntu-mate-22.04.conf

Introduction

Quickly create and run highly optimised desktop virtual machines for Linux, macOS and Windows; with just two commands. You decide what operating system you want to run and Quickemu will figure out the best way to do it for you. For example:

quickget ubuntu-mate 22.04
quickemu --vm ubuntu-mate-22.04.conf

The original objective of the project was to enable quick testing of Linux distributions where the virtual machine configurations can be stored anywhere, such as external USB storage or your home directory, and no elevated permissions are required to run the virtual machines. Quickemu now also includes comprehensive support for macOS and Windows.

Features

macOS Monterey, Big Sur, Catalina, Mojave & High Sierra
Windows 8.1, 10 and 11 including TPM 2.0
Ubuntu and all the official Ubuntu flavours
Over 360 operating system editions are supported!
Full SPICE support including host/guest clipboard sharing
VirtIO-webdavd file sharing for Linux and Windows guests
VirtIO-9p file sharing for Linux and macOS guests
QEMU Guest Agent support; provides access to a system-level agent via standard QMP commands
Samba file sharing for Linux, macOS and Windows guests (if smbd is installed on the host)
VirGL acceleration
USB device pass-through
Smartcard pass-through
Automatic SSH port forwarding to guests
Network port forwarding
Full duplex audio
Braille support
EFI (with or without SecureBoot) and Legacy BIOS boot
Graphical user interfaces available

Quickemu is a wrapper for the excellent QEMU that attempts to automatically "do the right thing", rather than expose exhaustive configuration options.

We have a Discord for this project:

See this (old) video where I explain some of my motivations for creating Quickemu.

Requirements

QEMU (6.0.0 or newer) with GTK, SDL, SPICE & VirtFS support
bash (4.0 or newer)
Coreutils
EDK II
grep
jq
LSB
procps
python3
macrecovery
mkisofs
usbutils
util-linux
sed
socat
spicy
swtpm
Wget
xdg-user-dirs
xrandr
zsync
unzip

Installing Requirements

For Ubuntu, Arch and nixos systems the ppa, AUR or nix packaging will take care of the dependencies. For other host distributions or operating systems it will be necessary to install the above requirements or their equivalents.

These examples may save a little typing

Debian:

sudo apt install qemu bash coreutils ovmf grep jq lsb procps python3 genisoimage usbutils util-linux sed spice-client-gtk swtpm wget xdg-user-dirs zsync unzip

Fedora:

sudo dnf install qemu bash coreutils edk2-tools grep jq lsb procps python3 genisoimage usbutils util-linux sed spice-gtk-tools swtpm wget xdg-user-dirs xrandr unzip

MacOS:

This is a work in progress (see issue 248 for other steps and changes that may enable running on MacOS)

brew install qemu bash coreutils grep jq python@3.10 cdrtools gnu-sed spice-gtk wget zsync

Usage

Graphical User Interfaces

While quickemu and quickget are designed for the terminal, a graphical user interface is also available:

Quickgui by Mark Johnson and Yannick Mauray.

Many thanks to Luke Wesley-Holley and Philipp Kiemle for creating the Quickemu icons 🎨

Quickgui for Ubuntu

sudo add-apt-repository ppa:yannick-mauray/quickgui
sudo apt update
sudo apt install quickgui

Ubuntu Guest

quickget will automatically download an Ubuntu release and create the virtual machine configuration.

quickget ubuntu 22.04
quickemu --vm ubuntu-22.04.conf

Complete the installation as normal.
Post-install:
- Install the SPICE agent (spice-vdagent) in the guest to enable copy/paste and USB redirection
  - sudo apt install spice-vdagent
- Install the SPICE WebDAV agent (spice-webdavd) in the guest to enable file sharing.
  - sudo apt install spice-webdavd

Ubuntu devel (daily-live) images

quickget can also download/refresh devel images via zsync for Ubuntu developers and testers.

quickget ubuntu devel
quickemu --vm ubuntu-devel.conf

You can run quickget ubuntu devel to refresh your daily development image as often as you like, it will even automatically switch to a new series.

Ubuntu Flavours

All the official Ubuntu flavours are supported, just replace ubuntu with your preferred flavour.

kubuntu (Kubuntu)
lubuntu (Lubuntu)
ubuntu-budgie (Ubuntu Budgie)
ubuntukylin (Ubuntu Kylin)
ubuntu-mate (Ubuntu MATE)
ubuntustudio (Ubuntu Studio)
ubuntu (Ubuntu)
ubuntu-unity (Ubuntu Unity)
xubuntu (Xubuntu)

Other Operating Systems

quickget also supports:

alma (Alma Linux)
alpine (Alpine Linux)
android (Android x86)
archcraft (Archcraft)
archlinux (Arch Linux)
arcolinux (Arco Linux)
batocera (Batocera)
cachyos (CachyOS)
centos-stream (CentOS Stream)
debian (Debian)
deepin (Deepin)
devuan (Devuan)
dragonflybsd (DragonFlyBSD)
elementary (elementary OS)
endeavouros (EndeavourOS)
fedora (Fedora)
freebsd (FreeBSD)
freedos (FreeDOS)
garuda (Garuda Linux)
gentoo (Gentoo)
ghostbsd (GhostBSD)
haiku (Haiku)
kali (Kali)
kdeneon (KDE Neon)
kolibrios (KolibriOS)
linuxmint (Linux Mint)
lmde (Linux Mint Debian Edition)
mageia (Mageia)
manjaro (Manjaro)
mxlinux (MX Linux)
netboot (netboot.xyz)
netbsd (NetBSD)
nixos (NixOS)
openbsd (OpenBSD)
opensuse (openSUSE)
oraclelinux (Oracle Linux)
popos (Pop!_OS)
reactos (ReactOS)
rebornos (RebornOS)
rockylinux (Rocky Linux)
slackware (Slackware)
solus (Solus)
tails (Tails)
truenas-core (TrueNAS Core)
truenas-scale (TrueNAS Scale)
void (Void Linux)
zorin (Zorin OS)

Or you can download a Linux image and manually create a VM configuration.

Download a .iso image of a Linux distribution
Create a VM configuration file; for example debian-bullseye.conf

guest_os="linux"
disk_img="debian-bullseye/disk.qcow2"
iso="debian-bullseye/firmware-11.0.0-amd64-DVD-1.iso"

Use quickemu to start the virtual machine:

quickemu --vm debian-bullseye.conf

Complete the installation as normal.
Post-install:
- Install the SPICE agent (spice-vdagent) in the guest to enable copy/paste and USB redirection.
- Install the SPICE WebDAV agent (spice-webdavd) in the guest to enable file sharing.

macOS Guest

quickget automatically downloads a macOS recovery image and creates a virtual machine configuration.

quickget macos catalina
quickemu --vm macos-catalina.conf

macOS high-sierra, mojave, catalina, big-sur and monterey are supported.

Use cursor keys and enter key to select the macOS Base System
From macOS Utilities
- Click Disk Utility and Continue
  - Select QEMU HARDDISK Media (~103.08GB) from the list and click Erase.
  - Enter a Name: for the disk
  - If you are installing macOS Mojave or later (Catalina, Big Sur, and Monterey), choose any of the APFS options as the filesystem. MacOS Extended may not work.
- Click Erase.
- Click Done.
- Close Disk Utility
From macOS Utilities
- Click Reinstall macOS and Continue
Complete the installation as you normally would.
- On the first reboot use cursor keys and enter key to select macOS Installer
- On the subsequent reboots use cursor keys and enter key to select the disk you named
Once you have finished installing macOS you will be presented with an the out-of-the-box first-start wizard to configure various options and set up your username and password
OPTIONAL: After you have concluded the out-of-the-box wizard, you may want to enable the TRIM feature that the computer industry created for SSD disks. This feature in our macOS installation will allow QuickEmu to compact (shrink) your macOS disk image whenever you delete files inside the Virtual Machine. Without this step your macOS disk image will only ever get larger and will not shrink even when you delete lots of data inside macOS.
- To enable TRIM, open the Terminal application and type the following command followed by pressing <kbd>{=html}enter</kbd>{=html} to tell macos to use the TRIM command on the hard disk when files are deleted:

sudo trimforce enable

You will be prompted to enter your account's password to gain the privilege needed. Once you've entered your password and pressed <kbd>{=html}enter</kbd>{=html} the command will request confirmation in the form of two questions that require you to type <kbd>{=html}y</kbd>{=html} (for a "yes" response) followed by <kbd>{=html}enter</kbd>{=html} to confirm. If you press <kbd>{=html}enter</kbd>{=html} without first typing <kbd>{=html}y</kbd>{=html} the system will consider that a negative response as though you said "no":

IMPORTANT NOTICE: This tool force-enables TRIM for all relevant attached devices, even though such devices may not have been validated for data integrity while using TRIM. Use of this tool to enable TRIM may result in unintended data loss or data corruption. It should not be used in a commercial operating environment or with important data. Before using this tool, you should back up all of your data and regularly back up data while TRIM is enabled. This tool is provided on an "as is" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THIS TOOL OR ITS USE ALONE OR IN COMBINATION WITH YOUR DEVICES, SYSTEMS, OR SERVICES. BY USING THIS TOOL TO ENABLE TRIM, YOU AGREE THAT, TO THE EXTENT PERMITTED BY APPLICABLE LAW, USE OF THE TOOL IS AT YOUR SOLE RISK AND THAT THE ENTIRE RISK AS TO SATISFACTORY QUALITY, PERFORMANCE, ACCURACY AND EFFORT IS WITH YOU.
Are you sure you with to proceed (y/N)?

And a second confirmation once you've confirmed the previous one:

Your system will immediately reboot when this is complete.
Is this OK (y/N)?

As the last message states, your system will automatically reboot as soon as the command completes.

The default macOS configuration looks like this:

guest_os="macos"
img="macos-catalina/RecoveryImage.img"
disk_img="macos-catalina/disk.qcow2"
macos_release="catalina"

guest_os="macos" instructs Quickemu to optimise for macOS.
macos_release="catalina" instructs Quickemu to optimise for a particular macOS release.
- For example VirtIO Network and Memory Ballooning are available in Big Sur and newer, but not previous releases.
- And VirtIO Block Media (disks) are supported/stable in Catalina and newer.

macOS compatibility

There are some considerations when running macOS via Quickemu.

Supported macOS releases:
- High Sierra
- Mojave
- Catalina (Recommended)
- Big Sur
- Monterey
quickemu will automatically download the required OpenCore bootloader and OVMF firmware from OSX-KVM.
Optimised by default, but no GPU acceleration is available.
- Host CPU vendor is detected and guest CPU is optimised accordingly.
- VirtIO Block Media is used for the system disk where supported.
- VirtIO usb-tablet is used for the mouse.
- VirtIO Network (virtio-net) is supported and enabled on macOS Big Sur and newer but previous releases use vmxnet3.
- VirtIO Memory Ballooning is supported and enabled on macOS Big Sur and newer but disabled for other support macOS releases.
USB host and SPICE pass-through is:
- UHCI (USB 2.0) on macOS Catalina and earlier.
- XHCI (USB 3.0) on macOS Big Sur and newer.
Display resolution can only be changed via macOS System Preferences.
Full Duplex audio requires VoodooHDA OC or pass-through a USB audio-device to the macOS guest VM.
NOTE! Gatekeeper and System Integrity Protection (SIP) need to be disabled to install VoodooHDA OC
File sharing between guest and host is available via virtio-9p and SPICE webdavd.
Copy/paste via SPICE agent is not available on macOS.

macOS App Store

If you see "Your device or computer could not be verified" when you try to login to the App Store, make sure that your wired ethernet device is en0. Use ifconfig in a terminal to verify this.

If the wired ethernet device is not en0, then then go to System Preferences -> Network, delete all the network devices and apply the changes. Next, open a terminal and run the following:

sudo rm /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist

Now reboot, and the App Store should work.

Windows 10 & 11 Guests

quickget can not download Windows10 and Windows 11 automatically, but does automatically create an optimised virtual machine configuration that you can just add an Windows .iso image to. This configuration also includes the VirtIO drivers for Windows. quickget can automatically download Windows 8.1, Windows 10 and Windows 11 along with the VirtIO drivers for Windows and creates a virtual machine configuration.

quickget windows 11
quickemu --vm windows-11.conf

Complete the installation as you normally would.
All relevant drivers and services should be installed automatically.
A local adminstrator user account is automatically created, with these credentials:
- Username: Quickemu
- Password: quickemu

The default Windows 11 configuration looks like this:

guest_os="windows"
disk_img="windows-11/disk.qcow2"
iso="windows-11/windows-11.iso"
fixed_iso="windows-11/virtio-win.iso"
tpm="on"
secureboot="on"

guest_os="windows" instructs quickemu to optimise for Windows.
fixed_iso= specifies the ISO image that provides VirtIO drivers.
tpm="on" instructs quickemu to create a software emulated TPM device using swtpm.

All the options

Here are the usage instructions:

Usage
  quickemu --vm ubuntu.conf

You can also pass optional parameters
  --braille                         : Enable braille support. Requires SDL.
  --delete-disk                     : Delete the disk image and EFI variables
  --delete-vm                       : Delete the entire VM and it's configuration
  --display                         : Select display backend. 'sdl' (default), 'gtk', 'none', 'spice' or 'spice-app'
  --fullscreen                      : Starts VM in full screen mode (Ctl+Alt+f to exit)
  --ignore-msrs-always              : Configure KVM to always ignore unhandled machine-specific registers
  --screen <screen>                 : Use specified screen to determine the window size.
  --shortcut                        : Create a desktop shortcut
  --snapshot apply <tag>            : Apply/restore a snapshot.
  --snapshot create <tag>           : Create a snapshot.
  --snapshot delete <tag>           : Delete a snapshot.
  --snapshot info                   : Show disk/snapshot info.
  --status-quo                      : Do not commit any changes to disk/snapshot.
  --viewer <viewer>                 : Choose an alternative viewer. @Options: 'spicy' (default), 'remote-viewer', 'none'
  --ssh-port <port>                 : Set ssh-port manually
  --spice-port <port>               : Set spice-port manually
  --public-dir <path>               : expose share directory. @Options: '' (default: xdg-user-dir PUBLICSHARE), '<directory>', 'none'
  --monitor <type>                  : Set monitor connection type. @Options: 'socket' (default), 'telnet', 'none'
  --monitor-telnet-host <ip/host>   : Set telnet host for monitor. (default: 'localhost')
  --monitor-telnet-port <port>      : Set telnet port for monitor. (default: '4440')
  --monitor-cmd <cmd>               : Send command to monitor if available. (Example: system_powerdown)
  --serial <type>                   : Set serial connection type. @Options: 'socket' (default), 'telnet', 'none'
  --serial-telnet-host <ip/host>    : Set telnet host for serial. (default: 'localhost')
  --serial-telnet-port <port>       : Set telnet port for serial. (default: '6660')
  --keyboard <type>                 : Set keyboard. @Options: 'usb' (default), 'ps2', 'virtio'
  --keyboard_layout <layout>        : Set keyboard layout.
  --mouse <type>                    : Set mouse. @Options: 'tablet' (default), 'ps2', 'usb', 'virtio'
  --usb-controller <type>           : Set usb-controller. @Options: 'ehci' (default), 'xhci', 'none'
  --extra_args <arguments>          : Pass additional arguments to qemu
  --version                         : Print version

Desktop shortcuts

Desktop shortcuts can be created for a VM, the shortcuts are saved in ~/.local/share/applications. Here is an example of how to create a shortcut.

quickemu --vm ubuntu-22.04-desktop.conf --shortcut

Screen and window size (Linux guests only)

qemu will always default to the primary monitor to display the VM's window.

Without the --screen option, quickemu will look for the size of the smallest monitor, and use a size that fits on said monitor.

The --screen option forces quickemu to use the size of the given monitor to compute the size of the window. It won't use that monitor to display the VM's window if it's not the primary monitor. This is useful if the primary monitor if not the smallest one, and if the VM's window doesn't need to be moved around.

The --screen option is also useful with the --fullscreen option, again because qemu will always use the primary monitor. In order for the fullscreen mode to work properly, the resolution of the VM's window must match the resolution of the screen.

To know which screen to use, type:

xrandr --listmonitors | grep -v Monitors

The command will output something like this:

 0: +*HDMI-0 2560/597x1440/336+1920+0  HDMI-0
 1: +DVI-D-0 1920/527x1080/296+0+0  DVI-D-0

The first number is what needs to be passed to the --screen option.

For example:

quickemu --vm vm.conf --screen 0

The above uses the 2560x1440 screen to compute the size of the window, which Quickemu sizes to 2048x1152. Without the --screen option, Quickemu would have used the 1920x1080 monitor which results in a window size of 1664x936.

References

Useful reference that assisted the development of Quickemu.

AUTHORS

Written by Martin Wimpress.

BUGS

Submit bug reports online at: https://github.com/quickemu-project/quickemu/issues

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