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Data processing method and system based on solid state disk array and cache

A data processing and solid-state disk technology, applied in the direction of electrical digital data processing, data processing input/output process, memory system, etc., to achieve the effect of simple data recovery process, reducing reconstruction time, and improving lowercase performance

Active Publication Date: 2017-11-28
HUAZHONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to solve the technical problem of the extra read operation in the prior art due to the fact that the updated data block has corresponding verification information in the cache

Method used

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  • Data processing method and system based on solid state disk array and cache
  • Data processing method and system based on solid state disk array and cache
  • Data processing method and system based on solid state disk array and cache

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Embodiment Construction

[0058] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0059] figure 1 A schematic flow chart of a data processing method based on a solid-state disk array provided by an embodiment of the present invention, such as figure 1 As shown, steps S10 to S40 are included.

[0060] S10, receiving a write request, instructing the solid-state disk and the cache to write the data corresponding to the write request, the solid-state disk includes an array of multiple chips, and the multiple chips are used to carry multiple stripes, each stripe The plurality of candidate write data positions included are scattered among the plurality of chips, the logical addresse...

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Abstract

The invention discloses a data processing method and device based on a solid state disk array and a cache. The method includes: receiving a writing request, and instructing solid state disks and the cache to write data corresponding to the writing request; indicating the data, which is stored in the cache and written by each chip for the last time, through a hash table; preferentially replacing data blocks, which are in the cache and of a first stripe, when the cache is fully written, wherein the included data blocks which are in the cache and of the first stripe are most, and the chips are instructed to calculate verification information of the first stripe and write the verification information into the chips when the first stripe is replaced; and when a failure chip exists, restoring the data, which is written in the failure chip for the last time, through the hash table, and restoring data on a corresponding logical address in the failure chip through the data and the verification information in the non-failure chips. According to the method, verification block updating is delayed through the cache, the small-writing performance of a chip array is improved, and the problem of erasing frequency is alleviated.

Description

technical field [0001] The invention belongs to the technical field of computer storage, and more specifically relates to a data processing method and system based on a solid-state disk array and cache. Background technique [0002] Due to the limitation of mechanical characteristics of traditional disks, the improvement of read and write speed has reached a bottleneck. The new electronic storage device solid-state disk has good read and write performance, but the capacity of the solid-state disk is small and the number of times of erasing and writing is limited. Redundant Array of Independent Disks (RAID) technology combines multiple independent physical hard disks in different ways to form a large-capacity, high-performance logical hard disk. RAID can be divided into different array levels (RAID Levels) according to different fault tolerance capabilities and data layouts. RAID5 is the most commonly used level in RAID Levels. In order to improve the performance and relia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02G06F3/06
CPCG06F3/064G06F3/0667G06F3/0689G06F12/0292
Inventor 冯丹梅林军陈俭喜曾令仿刘景宁张晓祎
Owner HUAZHONG UNIV OF SCI & TECH
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