Control method and device for data block repair

The invention discloses a control method and a control device for data block restoration. The control method comprises the steps of: acquiring a topological structure of a data center, a repairing information providing node for repairing a data block, and a target repairing node; determining the maximum bottleneck bandwidth in the topological structure according to the repairing information providing node and the target repairing node, wherein the bottleneck bandwidth is the minimum available bandwidth of a link connecting the repairing information providing node and the target repairing node;determining a link with the minimum transmission cost in the topological structure according to the maximum bottleneck bandwidth; and repairing the data block according to the repairing information providing node, the target repairing node, the maximum bottleneck bandwidth and the link with the minimum transmission cost, so that the repairing efficiency of the data block is effectively improved. 一种用于数据块修复的控制方法和装置，其中，方法包括