Open Stack

Hi, would like to know if schedule filters are considered while instance migration/evacuation.
Basically I would like to know if we can restrict instance evacuation to specific host. like we have host aggregate/servergroup filters wherein we can specify while creating instance, which would restrict instance spinning in desired host. I would like to know if we have similar option for evacuate/migration.
The intent is to set affinity rules, so that instance remains within specific hosts. 		 	   		   		 	   		  
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