[IBM]The storwize parameters are not correct when cinder create volume with "--source-replica"

[yixuan zhang]

1. Create a volume type type-1 with storwize parameters change:
drivers:easytier=off
qos:IOThrottling=30000
2. Create a volume volume-1 with type-1.
Check the volume-1 from storage site,the parameters are correct;
drivers:easytier=off
qos:IOThrottling=30000

3. Create a volume with command
Cinder create --source-replica volume-1-id.

There is a new volume-2 creates with the clone of the replicated volume-1.
Check the volume-2 from the storage site.

It was found the
qos:IOThrottling=disabled.
drivers:easytier=on.

They should be the same with the initial volume-1.

[TaoBai (baitao2020)]

Thanks for you report this issue. I will work on it

[TaoBai (baitao2020)]

As confirmed with Ronen.
The cloned replica volume as current design does not have volume type. So that's the reason why cloned replica volume does not have parameter.

[TaoBai (baitao2020)]

https://etherpad.openstack.org/p/cinder-replication-redoc

In the Q&A part:

Q: The new volume created by create_replica_test_volume() does not have a volume-type associated, it's controled by cinder general, I am not sure whether this is a bug or work as design?
A2: This is by design. The volume type cannot be as for the original volume, it would be a replicated volume if so. Therefore I decided for allocate it with no volume-type.