METHOD FOR SUPPLYING ACCESS FOR LOGICAL UNIT NUMBER, AND METHOD FOR SUPPORTING SCSI PERSISTENT RESERVE COMMAND AND DRIVER THEREOF

摘要

PURPOSE: A method for supplying an access for a logical unit number, and method for supporting an SCSI(Small Computer System Interface) persistent reserve command and a driver thereof are provided to supply a non-concurrent shared access with respect to a logical volume through a multipath using an SCSI-3 persistent reserve command for supplying a multipath I/O in a non-concurrent clustering environment. CONSTITUTION: In a method for supplying an access with respect to a logical unit number of a shared storing system by using the second path out of a multi input/output path when a hardware trouble is generated in the first path out of the path, an opening option of an operating system is mapped by an SCSI persistent reserve command and all of the multipath may be registered as the logical unit number of the shared storing system(410). After obtaining a persistent reserve to the shared storing system, the second path accesses the logical unit number of the shared storing system(420).