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View migration method and device

A view and technology to be migrated, applied in the direction of response error generation, instrumentation, electrical digital data processing, etc., can solve the problems of low migration efficiency and cumbersome migration process, so as to simplify the migration process, improve the efficiency of view migration, and reduce the amount of data Effect

Active Publication Date: 2020-07-17
MACROSAN TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The migration process of the above solution is relatively cumbersome. In addition, the data written in the view is dedicated to the view, but it still needs to be copied to the target LUN during migration, resulting in low migration efficiency.

Method used

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Embodiment Construction

[0025] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0026] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The invention provides a view migration method and device. The method is applied to a storage device comprising a main LUN and a view LUN which are independent of each other in storage space, and theview LUN is associated with a snapshot time point of the main LUN and stores view write-in data. The method comprises the steps of migrating to-be-migrated data in a snapshot time point associated with a view LUN to the view LUN; and in the migration process, if the view LUN receives the front-end IO request, determining a migration state of a target address field carried by the front-end IO request, and responding to the front-end IO request according to a set IO response strategy matched with the migration state. In the view migration process, the target LUN does not need to be newly built,and the migration operation process is simplified. Meanwhile, because view write-in data is stored in the view LUN, migration of the part of data is also omitted during migration, the amount of data needing to be migrated is greatly reduced, and the view migration efficiency is further improved.

Description

technical field [0001] The present application relates to data storage technology, in particular to a view migration method and device. Background technique [0002] In the era of big data, the amount of data is increasing and the data is becoming more and more important. It has become a mainstream way to store data in special storage devices and improve data reliability through the data protection features of storage devices. [0003] Snapshot is one of the data protection features of storage devices, and it is also a common solution to deal with "soft disasters". Soft disasters, hence the name Siyi, refer to "soft" disasters, usually referring to logical damage or unreadable production data due to misoperation, software bugs, viruses, etc. Through snapshot technology, old data can be saved before new data is written, so that when a soft disaster occurs in the data, the old data saved before can be used to recover, so that the data can be rolled back to a usable time plane...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F11/14
CPCG06F3/0619G06F3/0647G06F3/067G06F11/1464
Inventor 上官应兰
Owner MACROSAN TECH
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