Cloud storage based load balancing calculating method

The invention discloses a cloud storage based load balancing calculating method. When a file write-in request is received, a load balancing module in a central coordinator distributes input file blocks in a mode of balancing all the public cloud storage node loads, wherein the load balancing module consists of three sub-modules including a coordinator agent sub-module, a node positioning sub-module and a load balancing sub-module. The load balancing calculating method comprises the following steps: (1) acquiring the state information of the storage nodes; (2) calculating the storage nodes with relatively light loads and recording the IP addresses; (3) calculating the size of loads to be moved and moving data; (4) repeating the steps (1-3) until the load of the storage nodes is balanced. According to the invention, the quantitative approaches of the load states of the public cloud storage nodes are given, and the core algorithm of the load balancing of the public cloud storage cluster is clear, and the cloud storage based load balancing calculating method has the attribute characteristics of practicability and high efficiency.