Inspur Suzhou Intelligent Technology Co., Ltd

Suzhou Metabrain Intelligent Technology Co., Ltd.

Zhenguang Zhang

Ruipeng Feng

The present disclosure relates to the technical field of data storage, and provides an IO request processing method, apparatus and system for multi-path storage and a storage medium, which are intended to improve IO efficiency of processing requests. When the method is applied to a storage system, the method includes: dividing a target volume to obtain a plurality of segments; determining a mapping relationship between the plurality of segments and a plurality of storage nodes, the mapping relationship being used for identifying an optimal storage node mapped by a segment in the plurality of storage nodes; detecting states of the plurality of storage nodes; adjusting the mapping relationship on the basis of respective detected state parameters of the plurality of storage nodes and/or path switching information sent by a host; and sending the adjusted mapping relationship to the host, so that the host, on the basis of the adjusted mapping relationship, sends an IO request for a segment to a path device corresponding to the optimal storage node.

IO request processing method, apparatus and system for multi-path storage and storage medium

Provided is a method for cleaning residual paths on a host end, including: acquiring device information of subordinate devices of a plurality of paths; determining, according to the device information, whether links corresponding to the subordinate devices are all abnormal; acquiring a global identification number and connection information of each subordinate device in a case that the links corresponding to the subordinate devices are all abnormal; when the global identification number is not null and the connection information is successfully acquired, querying a mapping state of a volume corresponding to the global identification number and a mapped host according to the global identification number and the connection information; and when the volume is not in the mapping state or the mapped host is not a target host, deleting the plurality of paths and the subordinate devices.

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Jiangsu, China

Zhenguang Zhang