12.5. Setting Migration Priority

Red Hat Enterprise Virtualization Manager queues concurrent requests for migration of virtual machines from a given host. Every minute the load balancing process runs. Hosts already involved in a migration event are not included in the migration cycle until their migration event has completed. When there is a migration request in the queue and available hosts in the cluster to action it, a migration event is triggered in line with the load balancing policy for the cluster.
It is possible to influence the ordering of the migration queue, for example setting mission critical virtual machines to migrate before others. The Red Hat Enterprise Virtualization Manager allows you to set the priority of each virtual machine to facilitate this. Virtual machines migrations will be ordered by priority, those virtual machines with the highest priority will be migrated first.
  1. Click the Virtual Machines tab.
  2. Select the entry for the virtual machine that you want to migrate.
    • With the entry for the virtual machine still selected, click the Edit button; or
    • Right click the entry for the virtual machine and click Edit in the menu that appears.
  3. Click the High Availability tab.
  4. Set the priority of the virtual machine by selecting Low, Medium, or High under Priority for Run/Migrate Queue.
  5. Click OK to save the change to the virtual machine's priority.
  6. Result:
    The virtual machine's migration priority has been modified.