Full-flash storage load balancing method and device and storage system

Abstract

The invention discloses a full-flash memory load balancing method. The method comprises the following steps: calculating a load pressure value of each storage unit in a storage system; when a block application request is received, determining a target storage unit corresponding to the current minimum load pressure value according to the load pressure value; obtaining a target block block from thetarget storage unit; allocating the target block block to a thread corresponding to the block block application request; according to the method, the block block in the target storage unit corresponding to the current minimum load pressure value is selected to be allocated to the thread; therefore, the condition that the light-load storage unit is idle and the heavy-load storage unit continuouslyreceives a new task is avoided, so that the overall load balance is achieved, and the overall performance of the storage system is brought into play to the maximum extent; the invention also disclosesa full-flash memory load balancing device, a storage system and a computer readable storage medium, which have the above beneficial effects.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to an all-flash storage load balancing method, device, storage system and computer-readable storage medium. Background technique [0002] At present, all-flash storage is an important direction of storage development. With the gradual decline in the price of SSD (solid state disk, solid state drive), all-flash storage products will surely become the main products in the storage field in the future. Compared with traditional storage, all-flash storage not only has an absolute advantage in performance, but also has a more flexible data organization method, that is, data is stored by appending. Specifically, when data is written to the same logical address, it is written in a new place each time, and the old data will not be overwritten, but will wait for subsequent recycling as garbage. [0003] In order to realize this data storage method, the post-allocation address metho...

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Problems solved by technology

[0004] However, since the physical space in the background comes from different storage units (according to different system implementations, these storage units may be SSDs or RAIDs composed of SSDs), the data processing capabilities and current load conditions of each storage unit are often Therefore, the simple method of sequentially using the blocks divided by different storage units is very likely to cause unbalanced load among storage units, and it is impossible to make better use of these storage units. overall performance

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