KVM nested virtualization Configuration

KVM nested virtualization Configuration

(1) check that the virtual machine A does not support virtualization. Run the lscpu command.

Virtualization is not supported because there is no VT-X identifier

(2) Enable the nested support on the Physical Machine

# Check whether the current physical machine supports nested

Cat/sys/module/kvm_intel/parameters/nested

N # Not Supported

# Enable the physical machine to support nested

Echo "options kvm-intel nested = 1">/etc/modprobe. d/kvm-intel.conf

# Host restart or execution

# Rmmod kvm-intel

# Modprobe kvm-intel nested = 1

# Check whether it is supported after restart

Cat/sys/module/kvm_intel/parameters/nested

Y # changed to Y. Supported

(3) modify the virtual machine to support virtualization on the Physical Machine

# Search for UUID

# View the UUID of the VM

[Root @ bkjia ~] # Virsh list -- all | grep 313d634ad72247ee938

10 313d634ad72247ee9425a3038515829 running

# VM Shutdown

Init 0

# Modifying the virtual machine configuration file on a physical machine

Virsh edit 313d634ad72247ee9%a30%15829

Add the following content to </features>:

<Cpu mode = 'custom' match = 'extract'>

<Model fallback = 'allow'> core2duo </model>

<Vendor> Intel </vendor>

<Feature policy = 'require 'name = 'lahf _ lm '/>

<Feature policy = 'require 'name = 'xtpr '/>

<Feature policy = 'require 'name = 'cx16'/>

<Feature policy = 'require 'name = 'tm2'/>

<Feature policy = 'require 'name = 'est '/>

<Feature policy = 'require 'name = 'vmx'/>

<Feature policy = 'require 'name = 'pbe'/>

<Feature policy = 'require 'name = 'TT'/>

<Feature policy = 'require 'name = 'ht '/>

<Feature policy = 'require 'name = 'ss'/>

<Feature policy = 'require 'name = 'acpi '/>

<Feature policy = 'require 'name = 'ds'/>

</Cpu>

Save

# Start the VM on the Physical Machine

Virsh start 313d634ad72247ee9%a30%15829

# Check whether the VM is supported

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