I did. And it didn't help me. I tried several requests like
GET
/ovirt-engine/api/datacenters/{datacenter:id}/storagedomains/{storagedomain:id}/disks/{disk:id}
But there is no virtio-scsi information at all. I suppose the hosted engine itself does
not need to know that information.
The workflow would be to create the vm with all the disks over the rest-api and then to
install it using a prepared iso with a kickstart file which holds the information about
the disk layout, filesystem, etc. In order to prepare the kickstart file correctly I need
to know which disk is ie. vda, vdb, ...