Description of problem: org.ovirt.engine.core.bll.storage.StorageHandlingCommandBase#initializeVds picks a random active host if not host is supplied (as is, e.g., by the GUI). For performance considerations, REST API users may also want to select a specific host.
verified on 4.2.0-0.6.el7
This bugzilla is included in oVirt 4.2.0 release, published on Dec 20th 2017. Since the problem described in this bug report should be resolved in oVirt 4.2.0 release, published on Dec 20th 2017, it has been closed with a resolution of CURRENT RELEASE. If the solution does not work for you, please open a new bug report.