[wallaby][nova] Host Evacuate Instances

Hi, I am using openstack wallaby. I am testing to evacuate instances from failed host. The feature works fine. The instances on cinder backed shared storage rebuild on other host and their data is preserved. However the instances that are on local compute storage rebuild with fresh image on other host and data on root disk was lost. The question is, is it possible to evacuate all instances from failed host that are on shared storage only ? Ammad