October 2, 2022
Shutterstock.com/Eugene Kouzmenok KVM is a virtualization technology that’s integrated into the Linux kernel. A system with KVM enabled can act as a type-1 hypervisor, provided the processor supports it. There are several ways to create a virtual machine using KVM. QEMU can use KVM and libvirt and its Virtual Machine Manager UI provide a convenient…

Shutterstock.com/Eugene Kouzmenok

KVM is a virtualization technology that’s integrated into the Linux kernel. A system with KVM enabled can act as a type-1 hypervisor, provided the processor supports it.

There are several ways to create a virtual machine using KVM. QEMU can use KVM and libvirt and its Virtual Machine Manager UI provide a convenient interface around it.

KVM can be used to create nested virtual machines on compatible hardware. This lets you create VMs inside VMs to accommodate more complex use cases. Consider a virtualized development environment that runs on your host. You might need to run virtual device emulators within that environment, nested two levels deep from the bare metal hardware.

This article will show you how to set up nested KVM virtualization and test that it’s working. Before continuing, check you’ve got a functioning KVM installation available and that you’re familiar with creating new KVM virtual machines.

Checking Whether Nested Virtualization Is Enabled

Nested virtualization is supported by most modern processor families that offer hardware virtualization. You can check whether nesting is already enabled on your hypervisor by using…

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