Abstract: An example method of reserving a resource of virtualized infrastructure in a data center on behalf of a client includes: obtaining, by a resource lock manager from a topology manager, a sub-topology for the resource from a resource topology of the virtualized infrastructure; setting, by the resource lock manager, an exclusive lock on the resource and on each of at least one descendant in the sub-topology for the resource, each exclusive lock disallowing any other lock on its respective resource; setting, by the resource lock manager, a limited lock on each ancestor in the sub-topology for the resource, each limited lock allowing any other limited lock on its respective resource; and notifying the client that a reservation of the resource is granted.

Abstract: An example method of reserving a resource of virtualized infrastructure in a data center on behalf of a client includes: obtaining, by a distributed semantic network, a set of facts corresponding to resources in the virtualized infrastructure and a set of rules corresponding to relationships between the resources; receiving, at the first semantic network instance, a first reservation request for a first resource of the virtualized infrastructure from a first client, wherein the first reservation request comprises a first rule specifying a requested exclusive lock on the first resource; passing the first rule from the first semantic network instance to the second semantic network instance; receiving an acknowledgement from the second semantic network instance in response to passing the first rule; and sending an acknowledgement to the first client that the first rule specifying the requested exclusive lock on the first resource has been created.