Kernel-based Virtual Machine (KVM)

KVM

Install:

• egrep -c '(vmx|svm)' /proc/cpuinfo (Check CPU Virtualization Support for AMD-V and Intel-VT) OR,
  • sudo apt install cpu-checker
  • sudo kvm-ok

• sudo apt install kvm* qemu* libvirt*
  • bridge-utils (allow users other than the host system)
  • virt-manager (gui)
• sudo systemctl enable libvirtd
• sudo systemctl start libvirtd
  • lsmod | grep -i kvm

Save space on drive:

1. sudo mv /var/lib/libvirt/images /largeDisk/images
2. sudo ln -s /largeDisk/images /var/lib/libvirt/images

Create VM with qemu-img and qemu-system-x86_64

1. sudo qemu-img create -f qcow2 /var/lib/libvirt/images/TinyCore.qcow2 24M
2. sudo qemu-system-x86_64 -hda /var/lib/libvirt/images/TinyCore.qcow2 -cdrom /home/daniel/Distros/TinyCorePure64-11.1.iso

Create VM with virt-install

1. sudo virt-install --name=KVMTest --vcpu=2 --ram=2048 --location=/home/daniel/Distros/debian-10.5.0-amd64-xfce-CD-1.iso

virsh

virsh help <command>

virsh list --all

virsh start <name>

virsh save <name> <saved>

Other important commands: restore <saved>, autostart, reboot, suspend, resume, shutdown, destroy, undefine

Create from xml: virsh dumpxml <name> <name>.xml virsh create <name>.xml