Patent ID: 7689786
Filing Date: 2010-03-30
Classification: G06F

Abstract:
1. A method for overriding an existing device reservation comprising: performing discovery processing by a first data storage system to locate a specified device, said discovery processing including determining whether there is a reservation conflict for said device of a second data storage system; if there is a reservation conflict for said device, issuing a command from the first data storage system to the second data storage system during said discovery processing to create an override for said reservation conflict, said override causing processing to be performed at a subsequent point in time so that an existing reservation associated with the reservation conflict is overridden in connection with performing a first process on said first data storage system, wherein override information for overriding said existing reservation of said device is stored in accordance with said command; receiving, at the second data storage system, a subsequent command for said device sent over an associated communication path; and determining whether to allow said subsequent command, said determining including determining whether said associated communication path is identified in the override information, wherein, the subsequent command is not allowed if the associated communication path is not accordingly identified in the override information.