Solid state disk array construction method, electronic device and storage medium

Abstract

The embodiment of the invention provides a solid state disk array construction method, an electronic device and a storage medium. The method comprises the following steps: constructing a storage poolthrough a two-layer mapping architecture, a plurality of RAID volume resources being shared through a static data layout based on an orthogonal Latin party in the next layer of mapping, organizing storage blocks in a disk pool into strips, and performing address mapping on the upper layer of the strips through a mapping table; dividing a part of storage areas of the storage pool, storing data in aform of two copies as a cache for absorbing a small write request, converting the copy data into a stripe form in the background, and organizing the copy cache area in a form of a paired stripe; monitoring the state of the solid state disk forming the array in real time, and marking the solid state disk with degraded performance due to internal background activities; and redirecting the read-write request on the performance-degraded solid state disk according to the state of each solid state disk. According to the embodiment of the invention, the average delay and the tail delay of the solidstate disk array can be effectively reduced, and the system performance and stability are improved.

Description

technical field [0001] The embodiments of the present invention belong to the technical field of computer storage, and more specifically, relate to a method for constructing a solid-state disk array, electronic equipment, and a storage medium. Background technique [0002] A redundant array of independent disks (Redundant Array of Independent Disks, RAID) based on parity protection can improve the reliability of a storage system based on a solid state disk. However, if RAID is directly applied to solid-state drives to build a storage system, there will be performance problems. The RAID verification update mechanism increases the delay of write requests, and the SSD RAID will have serious delay fluctuations. When the SSD is performing background operations, such as write cache refresh and garbage collection, the request of the upper layer application will be temporarily blocked, causing the delay to fluctuate violently. In addition, the I / O load applied in reality generally...

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Problems solved by technology

[0005] In order to overcome the above-mentioned problems of high storage delay and large delay fluctuation in the array storage of the existing solid-state hard disk, or at least partially solve the above-mentioned problems, an embodiment of the present invention provides a method for constructing a solid-state hard disk array, electronic equipment, and a storage medium

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