Patent ID: 8001322
Filing Date: 2011-08-16
Classification: G06F,Y02D

Abstract:
1. A method by which a first software component notifies a second software component of an event when the first and second software components both have access to a shared physical storage medium, the method comprising: registering a registration key for a physical computer system on which the second software component is executing, the registration key enabling the second software component to access the shared physical storage medium during registrants-only reservations; utilizing, by the physical computer system, a cached version of data stored in the shared physical storage medium during execution of the physical computer system; updating the data in the shared physical storage medium as a result of the event; making a persistent registrants-only reservation on the shared physical storage medium; unregistering the registration key of the physical computer system by a second physical computer system executing the first software component to notify the physical computer system of the event; the physical computer system recognizing the notification of the event and a need to update the cached version of data in the physical computer system the next time the second software component attempts to access the shared storage medium and the attempted access fails due to the registrants-only reservation and the unregistering of the registration key; reregistering the physical computer system with the shared physical storage medium; and obtaining, by the physical computer system, the updated data in the shared storage medium in order to update the cached version of the data in the physical computer system utilized during execution of the physical computer system.