Method, device and equipment for writing IO based on RAID strip and readable medium

Abstract

The invention provides a method, a device and equipment for writing IO based on an RAID stripe and a readable medium. The method comprises the following steps: testing RAID disks, and grading the disks based on a test result; dividing the system state according to a preset performance index; and in response to the received writing IO request and the condition that the system state is a preset state, performing different processing on the blocks in the RAID strip according to the disk level. By using the scheme of the invention, the write-in time delay of the RAID stripe IO can be reduced, the bandwidth of the data is improved, and the performance of the storage system is improved.

Description

technical field

[0001] This field relates to the field of computers, and more specifically relates to a method, device, device and readable medium for writing IO based on RAID stripes. Background technique

[0002] In cloud computing data centers, the performance of data storage is the core issue that users care about. The RAID of the storage system is divided according to stripes, and the RAID stripes are divided according to the stripes of each disk block. The write task of a RAID stripe will be converted into the write task of multiple disk partitions, and the IO task of the RAID stripe will be completed after the write tasks of all disk partitions are completed. However, since the writing performance of each disk is different, and the busyness of each disk is also different, this results in a very large difference in the writing task performance of each disk block corresponding to the same stripe writing task. And only after the slowest disk block write task is complet...

Images