METHOD AND APPARATUS FOR RESTORING IO READING FAILURE OF RAID5 ARRAY

摘要

A method for restoring IO reading failure of a Raid5 array. The method is applied in a degraded RAID5 array, comprising: placing the IO reading failure in a failure restoration thread queue; for the IO reading failure in the failure restoration thread queue, constructing IO writing with the content being invalid data and executing the operation of writing IO, the initial position and the size in the IO writing being the same as those in the IO reading failure; and after the IO writing succeeds, writing the invalid data in a data buffer of the IO reading failure, and returning IO writing success. The method timely restores the read error in a video data region of the degraded RAID5 array.