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  KVM virtualization nested configuration
     
  Add Date : 2018-11-21      
         
         
         
  (1) To see our virtual machine A not to support virtualization, command lscpu

No VT-X label, so it does not support virtualization

(2) physical machine to open nested support

# View the current physical machine supports nested

cat / sys / module / kvm_intel / parameters / nested

 N # does not support


# Make physical supports nested

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

# Physical machine reboot or execution

#rmmod kvm-intel

#modprobe kvm-intel nested = 1


# After the restart to see if support

cat / sys / module / kvm_intel / parameters / nested

  Y # becomes Y, support

Modify (3) physical machine to a virtual machine that supports virtualization

# Find the UUID

# See the virtual machine UUID

[Root @ linuxhost ~] # virsh list --all | grep 313d634ad72247ee938

 10 313d634ad72247ee93859a3042415829 running

# Virtual machine machine

init 0

# Physical machine to modify the virtual machine configuration file

virsh edit 313d634ad72247ee93859a3042415829

In < / features> added the following:

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

    < 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 = 'tm' />

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

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

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

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

  < / Cpu>

save


Start the virtual machine on a physical machine #

virsh start 313d634ad72247ee93859a3042415829

# View the virtual machine support
     
         
         
         
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