Comment 1 for bug 1918449

In the case of the LVM driver, this doesn't seem to matter, because it returns ensure_export() from the target driver, but none of the target drivers appear to return anything.

Does the 3par driver actually return updated values in this situation? Do any other drivers?

I ask because it's not clear if we actually need to apply model_updates from the ensure_export driver method -- the API may just be that it isn't expected to update any information.