Supply KVM Module Parameters

Please Note:

The KVM module example makes the following assumptions:

• The hypervisor is KVM for CentOS 7 and it is installed on both servers
• The VM_PATH/VM_NAME folder contains a single exported virtual machine
• On the first module configuration, the VM is configured only on one server

Apply the following procedure to setup the module. In the following,the vm is configured only on server1 ; VM_PATH is /var/lib/libvirt/images and VM_NAME is vm1.

• On server1:
  1. Stop vm1: virsh shutdown vm1
  2. Copy the vm1 image to the new VM image location: cp -a /var/lib/libvirt/images/vm1.qcow2 /var/lib/libvirt/images/vm1/
     (Note: the original VM image can be deleted as soon as tests with the new location are successfull)
  3. Edit the vm1 configuration: EDITOR=vi virsh edit vm1 and change the line:
     <source file='/var/lib/libvirt/images/vm1.qcow2'>
     by replacing the file value with /var/lib/libvirt/images/vm1/vm1.qcow2
  4. Disable vm1 automatic start: virsh autostart vm1 --disable
  5. Create a configuration xml dump for vm1: virsh dumpxml vm1 > vm1.xml
• On server2:
  
  1. Copy the xml configuration vm1.xml from server1
  2. Create the vm1 but do not start: virsh define vm1.xml
  3. Disable vm1 automatic start: virsh autostart vm1 --disable
  4. Create the directory for the image location: mkdir -p /var/lib/libvirt/images/vm1/

On the first start, start server1 as primary.
Note: Whenever vm1 configuration is changed, you must reapply the new configuration on the other server