Node expansion method and device and immigration node
A node expansion and node technology, applied in the direction of input/output to record carrier, input/output process of data processing, instruments, etc., can solve the problem of high time cost of node expansion, difficulty in effectively reducing data pressure, and time-consuming, etc. question
Active Publication Date: 2021-09-14
HANGZHOU HIKVISION DIGITAL TECH
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[0003] However, when the amount of data is large, data migration may take a long time, resulting in a high time cost for node expansion
Therefore, it is difficult to effectively reduce data pressure
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[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0049] In order to describe the node expansion method provided by the embodiment of the present invention more clearly, the application scenarios of the node expansion method provided by the embodiment of the present invention will be described below. A storage pool cluster may include multiple nodes, and the number of multiple nodes may vary according to application scenarios. For the convenience of description, it is assumed that the storage pool cluster is ...
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The embodiment of the invention provides a node expansion method and device and an immigration node. The method comprises the following steps: switching to a data reconstruction forbidding state, and refusing a node in the data reconstruction forbidding state to execute data reconstruction operation; when physical disks of other nodes are migrated to the immigration node, determining a security domain to which the physical disks belong in the other nodes to serve as a target security domain, wherein the other nodes are in the data reconstruction forbidding state in advance; adding the physical disk into a target security domain, and starting a service corresponding to the physical disk to manage the physical disk; and after determining that the disk migration is finished, terminating the data reconstruction forbidding state. According to the method, node expansion can be realized in a physical disk migration mode under the condition that data migration is not needed, and rapid node expansion is realized by limiting data reconstruction of the nodes and avoiding unnecessary data reconstruction, so that data pressure is effectively reduced.
Description
technical field [0001] The present invention relates to the technical field of storage devices, in particular to a node expansion method, device and migration node. Background technique [0002] In order to reduce the data pressure on the nodes in the storage system, the nodes in the storage system can be expanded to balance the data pressure on each node. In related technologies, a new node may be added to the storage system, and part of data in the existing node may be migrated to a storage medium in the new node. [0003] However, when the amount of data is large, data migration may take a long time, resulting in a high time cost for node expansion. Therefore, it is difficult to effectively reduce data pressure. Contents of the invention [0004] The purpose of the embodiment of the present invention is to provide a node expansion method, device and node, so as to realize rapid node expansion, thereby effectively reducing the data pressure of the node. The specific t...
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IPC IPC(8): G06F3/06
CPCG06F3/0604G06F3/062G06F3/0647G06F3/0689G06F3/067
Inventor 王丹严杰苏海洲刘飞龙杨州
Owner HANGZHOU HIKVISION DIGITAL TECH