From a constructive discussion during the SIG-Storage face to face - cluster scoping CRDs should be done only because of a compelling reason for doing so.
In the case of OBs, no sufficient reason exists for doing so. Rather, OBs should be scoped to the namespace of the provisioner. This provides a necessary amount of control and security wherein provisioners (via RBAC) can be prohibited from acting upon each other's OBs.
From a constructive discussion during the SIG-Storage face to face - cluster scoping CRDs should be done only because of a compelling reason for doing so.
In the case of OBs, no sufficient reason exists for doing so. Rather, OBs should be scoped to the namespace of the provisioner. This provides a necessary amount of control and security wherein provisioners (via RBAC) can be prohibited from acting upon each other's OBs.