How to adjust custom CPU topology for SolusVM 2 Windows VM?

Question

How to adjust custom CPU topology for SolusVM 2 Windows VM?

Answer

Manual adjustment of the KVM XML configuration file for a VM:

1. Access CR with the VM

2. Create VM's configuration backup:

   # virsh dumpxml UUID > path_to_backup_file  

3. Open Configuration editor:  

   # virsh edit UUID

4. Add a new line with topology:
   

   CONFIG_TEXT: <topology sockets='1' cores='2' threads='1'/>

   The new line needs to be added in <cpu>section, so the result will be:

   CONFIG_TEXT: <cpu mode='host-passthrough' check='none' migratable='on'>
      <topology sockets='1' dies='1' cores='2' threads='1'/>
   </cpu>

   Warning: Make sure that the multiplication of all 3 values equals the number of CPUs set in the VM's plan. 

    

5. Restart the VM to apply changes.  

Replace UUID and path_to_backup_file with your values.