Fault transferring processing method and system of IO path

Abstract

The invention discloses a fault transferring processing method and system of an IO path. The method comprises the steps that WWPN and host_port and failover_port information which corresponds to the WWPN are registered at a physical interface of a storage system, and port information of the host_port and port information of the failover_port of the physical interface are initialized; information of a main unit interface is mapped to a main unit, wherein the state of the host_port is set as active, and the state of the failover_port is set as inactive; an IO path link between the main unit andthe storage system is built, that is, connection between the main unit interface and a virtual port is built; the port is started, after the storage system is started up, the start_port is called, andthe IO path is started up, and when the main unit starts the IO, IO transmission is conducted; whether or not data transmission of the IO path fails is judged; if yes, the port fault is transferred,the information of the host_port of the fault end is converted onto the failover_port of the port at the opposite end, and a controller to which the failover_port belongs is switched. When the IO pathfails, the port information of the fault end is assigned to the failover_port, so that the main unit judges that an original issue path still exists, and IO issue can still continue.

Description

technical field [0001] The present invention relates to the technical field of IO data processing, in particular to an IO path failover processing method and system. Background technique [0002] With the rapid development of computer technology, many technologies have been greatly improved, especially the successful use of back-end storage system partitions, which meets the security and speedy requirements of server hosts for sending data. Moreover, with the successful use of cache and flash memory, the needs of various computer fields for computing resources and computing speed have been met, and this processing method has greatly accelerated the speed of data processing. [0003] However, for a multi-control system, when using FC HBA for IO transmission, when a certain path fails, that is, a certain port of FC HBA fails, for the IO forwarding mode of the faulty path, the common host and The method used by the storage system is to delay IO and convert the IO path between ...

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