KVM

KVM (Kernel-based Virtual Machine) is a hypervisor built into the Linux kernel.

1. Install libvirt Packages

   yay -S qemu libvirt edk2-ovmf virt-manager nfs-utils virtio-win
   
   # optional dependencies
   iptables-nft dnsmasq   # for default NAT/DHCP networking
   bridge-utils           # for bridged networking
   openbsd-netcat         # for remote management over SSH
   

2. Add user to libvirt groups

   sudo usermod -aG libvirt $USER
   

3. Start libvirtd daemon

   sudo systemctl enable --now libvirtd
   

4. Create network bridge with nmcli

   nmcli connection add type bridge ifname br0 con-name "Netzwerkbrücke" stp no
   nmcli connection add type bridge-slave ifname enp39s0 con-name "Ethernet" master br0
   nmcli connection down "Kabelgebundene Verbindung 1"
   nmcli connection up "Netzwerkbrücke"
   

   • When using bonding of interfaces, disable IPv4 and IPv6 on the bridge

     nmcli con mod "Netzwerkbrücke" ipv4.method disabled ipv6.method ignore 
     

5. Define bridge network XML file, e.g. as br0.xml

   <network>
     <name>br0</name>
     <forward mode='bridge'/>
     <bridge name='br0'/>
   </network>
   

6. Add bridge network to virt-manager

   virsh -c qemu:///system net-define br0.xml
   virsh -c qemu:///system net-autostart br0
   

7. Disable COW on Btrfs (optional, recommended)

   sudo chattr +C /var/lib/libvirt/images
   

8. Define a remote storage pool (e.g. remote ISO images) remote-iso.xml

   <pool type="netfs">
     <name>iso</name>
     <source>
       <host name="dragonhoard"/>
       <dir path="/Download/Software/ISOs"/>
       <format type="auto"/>
     </source>
     <target>
       <path>/var/lib/libvirt/images/iso</path>
     </target>
   </pool>
   

9. Add storage pool to virt-manager

   virsh -c qemu:///system pool-define remote-iso.xml
   virsh -c qemu:///system pool-autostart iso
   

10. Create the storage pool mountpoint

    sudo mkdir -p /var/lib/libvirt/images/iso