💻 Virtual Machine Manager (VMM)

VM software by Red Hat

See Windows & DOS VMs for minimum and maximum system requirements (RAM, VRAM, etc.)

• virt-manager qemu qemu-utils

• sudo systemctl enable/start libvirtd

qemu-system-i386 ... -net user,hostfwd=tcp:443::443 -redir tcp:80::80 -redir tcp:22::22 -hda storage.img -nographic

• qemu-img convert -f raw -O qcow "/dir/machine.vdi" "/dir/machine.img"

• virt-clone --original /dir/c8n1.img --name "new name" --file c8n2.img

• virt-clone --original "c8n0" --name "c8n1" --auto-clone

• virt-clone --connect=qemu:///system -o "vm" -n "newvm" --auto-clone

  OR copy .img; then use virt-manager to create a new VM; use the .img

• sudo qemu-img create -f raw drive.img 20G

• sudo gparted

• sudo fdisk -l

• sudo qemu-img resize "/dir/vm.img" +10G

  +20G, 40G, 80G, etc.. When using resize use same VM storage container type (.img)

• sudo qemu-img resize "/dir/vm.img" -10G

  -20G, -40G, etc.

• sudo dd if=/dir/qemu/vm.img of=/dev/sXX

• Packages: ebtables & dnsmasq
• Check box for Link State: Active

• Crash after every sound event?

• Install gstreamer plugins

  • gst-plugins*

  • reboot

• yay -S system76-power

• sudo systemctl enable com.system76.PowerDaemon.service

• sudo systemctl start com.system76.PowerDaemon.service

• See Arch Wiki: PCI Passthrough via OVMF for GPU indentification

  vfio-pci.ids=

• To add vfio-pci.ids via virt-manager GUI

  • Right click VM > Open > View Details > Add Hardware > PCI Host Device > vfio-pci.id

  • Most modern GPUs have at least one ID for video, and one ID for HDMI audio

    If you have VM startup issues make sure both are passed to the guest system

• sudo system76-power graphics integrated && sudo vim /etc/default/grub

• If system76-power errors out remove the service and enable + start then run the command again

  • rm /etc/systemd/system/system76-power.service

  • sudo systemctl enable system76-power.service

  • sudo systemctl start system76-power.service

• Comment out existing GRUB_CMDLINE_LINUX_DEFAULT

  The following line is for Thinkpad X1 Extreme G2 w/Nvidia 1650 Max-Q)

  ++ GRUB_CMDLINE_LINUX_DEFAULT="quiet loglevel=3 nowatchdog nvme_load=YES intel_iommu=on igfx_off kvm.ignore_msrs=1 vfio-pci.ids=10de:1f91,10de:10fa
  

• update-grub

• reboot

• To revert the process so that the host has GPU access comment out above and use this line instead

• sudo vim /etc/default/grub

  ++ GRUB_CMDLINE_LINUX_DEFAULT="quiet loglevel=3 nowatchdog nvme_load=YES kvm.ignore_msrs=1
  

• update-grub

• reboot

• VRAM (Default: QXL 16M)

  • Go to preferences

  • Check box for XML editing

  • Go to VM video preferences

  • Exit XML and add vram="64000"

    Or whatever amount is needed

  • OR change to vgamem="" for QXL

  • 16M = 16384, 32M = 32768, 64M = 65536, 120M = 122880, 240M = 245760

• Install kernel-headers

  • apti linux-kernel-headers

    If headers are not already installed

• Virtio w/3D Acceleration

  • Virtio as GPU

  • Check 3D Acceleration & change VRAM to 32M+

  • Display Spice

    • Listen type: None

    • Check OpenGL

      • Select GPU

  • Guest needs mesa >= 11.2 compiled with option..

    • gallium-drivers=virgl

• sudo addgroup vbox

• sudo usermod -aG vbox user

• Installing to USB via VMM

  • Add new USB device that points to USB drive in VMM console

    • Otherwise Live ISOs won’t detect USB drives etc.

• VirtIO Disk 1 > Virtual Disk > Advanced Options > Disk bus: SATA

• sudo EDITOR=vim virsh

• sudo virsh net-edit default

  ++ <host mac='' name='' ip=''/>
  

• sudo virsh net-destroy default

• sudo virsh net-start default

• Domain setup w/virt-manager

• virsh list --all

• virsh autostart [domain]

• virsh autostart [domain] --disable

  If needed

• virsh net-autostart default

• sudo systemctl enable libvirtd

• vim /vm_autostart_script.sh

  ++ #!/bin/bash
  ++ sudo virt-viewer --domain <domain> -f
  ++ while pgrep -u $USER qemu > /dev/null; do
  ++    sleep 5
  ++ done
  ++ poweroff
  

• Add script to .startx.. add .startx to ~/.profile

• Add hardware > Channel > spice webdav

• Install spice-webdav via guest

• Also: gvfs-fuse

• Arch Wiki: PCI passthrough via OVMF

• Chapter 5. Getting Started with Virtual Machine Manager Red Hat Enterprise Linux 7