Patent ID: 7865486
Filing Date: 2011-01-04
Classification: G06F,Y10S

Abstract:
1. A computer program product residing on a computer recordable medium for providing control on metadata within a network of storage controllers, wherein said computer program product comprising: program code means for designating one of said storage controllers as an owner storage controller, wherein said owner storage controller owns metadata controlling all input/output (I/O) operations associated with a region of storage; program code means for designating remaining of said storage controllers as client storage controllers; in response to an I/O request to one of said client storage controllers, program code means for suspending said I/O request by said one client storage controller; program code means for determining, by said owner storage controller, whether or not said region of storage has already been copied; program code means for, in a determination that said region of storage has been copied, unpending said I/O request by said one client storage controller to process said I/O request; and in a determination that said region of storage has not been copied,