restarting nova compute service impact to instances?
I wish to enable multipath storage access on the compute nodes. i have running instances on the compute nodes already. I need to change nova.conf on the compute nodes for this value:
iscsi_use_multipath = True
Actually this config item is changed to the following:
volume_use_multipath=true
And then I need to restart nova-compute service
systemctl restart openstack-nova-compute.service
Now can this be done safely with running instances? Or do I need to live migrate or shutdown instances first before running this restart?