Storage space management method and system, electronic equipment and storage medium

Abstract

The invention discloses a storage space management method. The storage space management method is applied to the electronic equipment comprising a first controller and a second controller, and comprises the following steps: acquiring a first logical volume load capacity of a first request home node in the first controller, and acquiring a second logical volume load capacity of a second request home node in the second controller; judging whether a request home node with abnormal load exists or not according to the first logical volume load capacity and the second logical volume load capacity; and if so, determining a logical volume load migration amount, and executing a load migration operation between the first request home node and the second request home node according to the logical volume load migration amount. Logical volume load balancing of the double controllers can be achieved, and storage performance bottlenecks are avoided. The invention further discloses a storage space management system, electronic equipment and a storage medium, which have the above beneficial effects.

Description

technical field [0001] The present application relates to the field of computer technology, and in particular to a storage space management method and system, an electronic device and a storage medium. Background technique [0002] In the storage design, the thin volume is used as a logical volume, and the address allocated when the user writes data is a logical address LBA. In fact, the location of the data storage is specified by a PBA given by the lower module, which is It involves the management of the metadata module: the metadata module is the module that manages this correspondence. When a business request is issued, the actual data location must be found through the metadata module, so that operations such as adding and deleting data can be performed. [0003] In a cluster with dual controllers, only one of the controllers is used for upper-layer business I / O, and the other controller is only used as a mirror to maintain high availability. Each thin volume is chara...

AI Technical Summary

Problems solved by technology

[0004] Under normal circumstances, it is sufficient to meet the load balancing conditions, but if there is an extreme situation, it cannot be satisfied: suppose the user creates 10,000 volumes, and the logical volume ID=0, 1, 2, 3, ..., 10000, at this time Both nodes have exactly 5000 volumes each

However, if all the even (or odd) volumes are deleted, the owners of the remaining 5000 volumes will be concentrated on the same node, which will cause a performance bottleneck

[0005] Therefore, how to realize load balancing of logical volumes of dual controllers and avoid storage performance bottlenecks is a technical problem currently to be solved by those skilled in the art

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