US Patent 9274817 Storage quality-of-service control in distributed virtual infrastructure

Techniques for delivering and measuring storage quality-of-service to virtual machines in a distributed virtual infrastructure. In one example, a method comprises the following steps. A controller obtains quality-of-service data from at least a portion of components of a distributed virtual infrastructure, wherein the components of the distributed virtual infrastructure comprise one or more storage units, one or more processing units, and one or more switches operatively coupled to form the distributed virtual infrastructure. The controller manages at least one input/output request throughout a path defined by at least one of the one or more processing units, at least one of the one or more switches, and at least one of the one or more storage units, based on at least a portion of the collected quality-of-service data.