Patent ID: 7797292
Filing Date: 2010-09-14
Classification: G06F,Y10S

Abstract:
1. An apparatus for an alternate connection path, the apparatus comprising: a request module configured to receive a first connection request to establish redundant connection paths between a first host and a control unit that controls a storage device containing data accessible by a plurality of hosts; a primary connection module configured to establish a first connection path communicating lock attention data between the control unit and the first host through a first communication channel, the lock attention data comprising a holder notification configured to notify the first host that the first host holds a lock on specified data on the storage device; an alternate connection module configured to establish a second connection path communicating lock attention data between the control unit and the first host through a second communication channel; a detection module configured to detect a failure of the first connection path; and a redirection module configured to redirect communication of the lock attention data between the control unit and the first host through the second connection path responsive to a detection by the detection module of a failure of the first connection path.