Method and device for allocating mapped address space
A technology of mapping addresses and allocation methods, which is applied in the database field, can solve the problems of low storage space utilization rate of newly added storage nodes and inability to achieve load balancing, etc., achieve large storage space utilization rate, reduce storage pressure, and realize the effect of load
Active Publication Date: 2019-12-03
深圳市汉云科技有限公司
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[0003] The purpose of the embodiments of the present invention is to provide a mapping address space allocation method and its device, aiming to solve the existing mapping address space allocation technology, when the storage nodes of the mapping system change, load balancing cannot be achieved, and new storage The storage space utilization of the nodes is low, and some storage nodes are still under high load storage
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[0022] 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.
[0023] The embodiment of the present invention solves the existing mapping address space allocation technology by extracting the corresponding target mapping address block from each original storage node when the storage node of the mapping system is changed, and assigning it to the newly added storage node. When the storage nodes of the mapping system change, load balancing cannot be achieved, the storage space utilization rate of the newly added storage nodes is low, and some storage nodes are still under high load storage.
[0024] In the embodiment of the present invention, the subject of execu...
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The invention is applicable to the technical field of databases and provides a method and a device for allocating mapping address space. The method comprises the following steps: obtaining characteristic information of mapping address blocks corresponding to a second storage node in a mapping system if a new first storage node is detected in the mapping system; determining characteristic information of a target mapping address block needing to be migrated from the second storage node to the first storage node according to a preset mapping address allocation rule and the characteristic information of the mapping address blocks; migrating a data block corresponding to the target mapping address block to the first storage node according to the characteristic information of the target mapping address block; and changing the storage node information corresponding to the characteristic information of the target mapping address block to the first storage node. According to an embodiment of the invention, when the storage node of the mapping system changes, the corresponding target mapping address block is extracted from each original storage node and allocated to the new storage node, and therefore, load balance is achieved.
Description
technical field [0001] The invention belongs to the technical field of databases, and in particular relates to a mapping address space allocation method and a device thereof. Background technique [0002] With the rapid development of communication networks, the demand for data storage is also increasing. In an existing data storage method, data is generally stored in a storage unit corresponding to a mapping address through a predetermined mapping algorithm. However, the existing mapping address space allocation technology cannot achieve load balancing when the storage nodes of the mapping system change, the storage space utilization rate of the newly added storage nodes is low, and some storage nodes are still under high load storage conditions. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide a mapping address space allocation method and its device, aiming to solve the existing mapping address space allocation tec...
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IPC IPC(8): G06F12/06
CPCG06F12/0615G06F12/0646
Inventor 陈晓攀熊志强胡伟
Owner 深圳市汉云科技有限公司