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Method and device for realizing online migration of distributed storage volume

A distributed storage and storage pool technology, applied in the computer field, can solve problems such as high risk and long business suspension time.

Inactive Publication Date: 2021-04-23
南京群顶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Both of these two solutions can use existing storage functions to easily implement data migration, but no matter which one requires business suspension, the first business suspension time will be longer and the risk will be greater

Method used

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  • Method and device for realizing online migration of distributed storage volume
  • Method and device for realizing online migration of distributed storage volume
  • Method and device for realizing online migration of distributed storage volume

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Embodiment Construction

[0042]Such asfigure 1 As shown, the present invention provides a method of implementing a distributed storage volume online migration, comprising the steps of:

[0043]S1: Processing the server receiving the service data storage request of the client, creates a logical volume VolumeB in the storage pool B, and stores its business data into the formation storage system;

[0044]S2: Processing Server Creating Virtual Logic Volume in the Storage System and associates it with the logical volume Volumeb;

[0045]S3: Creating a logical volume VOLUMEB RAID 1 relationship R1, R1 virtual appliance is Volume, specifying one of the mirrored as logical volume Volumeb, another image is not specified, map Volume to business data consisting of business data; to this, R1 It has been able to provide normal data read and write services to the business. If you need to read and write business data, the system will access Volume first, Volume will access the normally working in R1 to the normality Volumeb, such ...

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Abstract

The invention discloses a method and a device for realizing online migration of a distributed storage volume; the method comprises the steps: building a real logical volume in a storage pool for storing business data, building an RAID 1 relation R1, virtualizing a logical volume as virtual equipment of the R1, mapping the logical volume to a business system, enabling one mirror image in the R1 to point to the built real logical volume, and not designating the other mirror image at this time; then along with the continuous development of the business, when the requirement of the business for the read-write performance is not matched with the performance of the storage pool, creating a new logical volume with the same size on the migrated storage pool, then pointing the other mirror image of R1 to the new logical volume, triggering the data synchronization operation of R1, and synchronizing the business data stored in the original logical volume to the new logical volume; after synchronization is completed, offlining and deleting the original logical volume from the R1. Data migration is carried out on the basis of the RAID 1 data synchronization function, operation is easier, service pause cannot be caused in the operation process, and the operation risk is reduced.

Description

Technical field[0001]The present invention relates to the field of computer technology, and more particularly to a method and apparatus for realizing online migration of distributed storage rolls.Background technique[0002]In distributed block storage, logical volumes need to migrate across storage pools. Different storage pools generally have different fault grades, disk media, and data redundancy, such as the first storage pool, second storage pool, respectively. The first storage pool is the rack level fault domain, the SSD disk medium, the second storage pool is a server-level fault domain, HDD disk medium, and customer original data store in a logical volume in the second storage pool, with the business Development, its data value and business are increasing, the second storage pool is not suitable for carrying such important business, need to be migrated to the first storage pool, and the traditional logical volume migration scheme has roughly below:[0003]1, business side migra...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F11/14
CPCG06F3/0614G06F3/0644G06F3/0647G06F3/065G06F3/0665G06F3/067G06F3/0689G06F11/1464
Inventor 杨鹏杨波周宇
Owner 南京群顶科技有限公司
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