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Disk expansion method, device and computer equipment

A disk and disk mapping technology, applied in the field of communication, can solve the problems of large number of disks, unfavorable business operation, large amount of data migration, etc., and achieve the effect of disk load balancing

Active Publication Date: 2021-01-15
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, each time a piece of data is added in this disk expansion method, a large number of disks are affected, which in turn leads to a large amount of migrated data, which is not conducive to business operation

Method used

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  • Disk expansion method, device and computer equipment
  • Disk expansion method, device and computer equipment
  • Disk expansion method, device and computer equipment

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Embodiment Construction

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0064] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0065] refer to figure 1 , is a schematic flowchart of a disk capacity expansion method provided in the embodiment of the present application, the method may include but not limited to the following steps:

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Abstract

The invention provides a disk expansion method and device and computer equipment. A distributed storage system receives the to-be-stored data; according to the hash value of the to-be-stored data, thedata is mapped into a Hash ring so as to determine the position of the to-be-stored data in the Hash ring; furthermore, which two disks mapped into the hash ring can be preliminarily determined to carry out disk expansion; then, the data hash value between the two disks and the data hash value of the to-be-stored data are utilizedto calculate the disk hash value of the expansion disk according tothe to-be-stored data, i.e., which position the expansion disk should be mapped to the hash ring is determined, so that the load balance of each disk is ensured, and the amount of data needing to bemigrated and the number of disks influenced after the to-be-stored data is added are reduced.

Description

technical field [0001] The present application mainly relates to the technical field of communication, and more specifically relates to a disk capacity expansion method, device and computer equipment. Background technique [0002] In the application process of the distributed storage system, as the business volume increases, the disk often has insufficient space, and disk expansion is required, that is, the data on the old disk will be migrated to the new disk to free up disk space. Continue with business operations. [0003] During the process of disk expansion, the amount of data migrated from the old disk, the number of disks to be migrated, and the distribution of data on each disk often affect the normal operation of the business, thereby affecting work efficiency. [0004] In this regard, the prior art proposes to calculate the hash value of the data, and use the hash value to perform a remainder operation on the number of disks, so as to disperse the data into the di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
CPCG06F3/0604G06F3/0647G06F3/067
Inventor 娄婷
Owner LENOVO (BEIJING) LTD