Cinder Volume Migration

[iamsam]

Hi

I want to migrate a cinder volume from one backend to another.
Both backends are NFS exports from ontap, and on the same aggregate.
Using the command:
$ openstack volume migrate <volume-id> --host <cinder-host-name>
I am using netapp driver, How the volume will be migrated? through the Data Network or internally through ontap cluster network?

[Ontapforrum · Accepted solution]

Take a look at the following links. It clearly states - If the storage can migrate the volume on its own, it is given the opportunity to do so. As you are using 'NetApp unified driver', it should be intra-cluster.

However, If the volume is attached to a VM instance, the Block Storage creates a volume, and calls Compute to copy the data from the original to the new volume.

Migrate volumes:(openstack)
https://docs.openstack.org/cinder/yoga/admin/volume-migration.html

Understanding volume migration on OpenStack: Intracluster volume migration:
https://netapp.io/2018/11/07/understanding-volume-migration-on-openstack-intracluster-volume-migration/

NetApp unified driver:
https://docs.openstack.org/cinder/yoga/configuration/block-storage/drivers/netapp-volume-driver.html