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Snapshot creating method, system, storage medium and equipment

A technology of file system and operating system, which is applied in the field of cloud computing, can solve the problems of incorrect and unsynchronized data restored by cloud hard disk snapshots, and achieve the effects of saving time, improving convenience, and ensuring data consistency

Pending Publication Date: 2021-11-05
济南浪潮数据技术有限公司
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Problems solved by technology

[0004] In view of this, the object of the present invention is to propose a method, system, storage medium and device for creating a snapshot, so as to solve the problem in the prior art that when the cloud platform creates a snapshot for a consistency group, there is data in the file system that is not synchronized to the Cloud hard disks lead to incorrect data recovery from cloud hard disk snapshots later

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  • Snapshot creating method, system, storage medium and equipment
  • Snapshot creating method, system, storage medium and equipment
  • Snapshot creating method, system, storage medium and equipment

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0044] It should be noted that all the expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name or different parameters. It can be seen that "first" and "second" " is only for the convenience of expression, and should not be understood as limiting the embodiment of the present invention. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, of a process, method, system, product or other steps or elements inherent in a process, method, system, product, or device comprising a series of steps or elements.

[0045] Based on the above purpos...

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Abstract

The invention provides a snapshot creating method, a system, a storage medium and equipment. The method comprises the steps: sending a first request to a virtual machine through a cloud platform, and freezing a file system corresponding to each cloud hard disk in a consistency group through the virtual machine based on the first request; in response to the fact that all the file systems are frozen, data in caches of all the file systems are written into the corresponding cloud hard disks; in response to the fact that the data in the cache of each file system is written into the corresponding cloud hard disk, a second request is sent to the back-end storage through the cloud platform, and snapshots are created for each cloud hard disk in the consistency group through the back-end storage based on the second request; and in response to completion of creating the snapshots for the cloud hard disks in the consistency group, sending a third request to the virtual machine through the cloud platform, and performing freezing release on the frozen file systems corresponding to the cloud hard disks based on the third request through the virtual machine. According to the invention, the reliability of creating the snapshot for the consistency group by the cloud platform is realized.

Description

technical field [0001] The present invention relates to the technical field of cloud computing, in particular to a method, system, storage medium and equipment for creating a snapshot. Background technique [0002] Currently, in some important application scenarios, such as large-scale database applications, database tables, logs, and configuration files are stored in multiple different cloud disks, and the data in each cloud disk is interrelated and interdependent. When it is necessary to create snapshots for all cloud disks, if the snapshot creation time of each cloud disk is inconsistent, the data status in the cloud disk snapshots may be inconsistent. Therefore, the cloud platform introduces the concept of consistency group. The data in the same application is written to each file system in real time, and the data in the file system is then written to each cloud disk in real time. When it is necessary to create snapshots for all the cloud disks used by the same applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/11G06F16/182G06F9/455
CPCG06F16/128G06F9/45558G06F16/182G06F2009/45579
Inventor 江治林雷跃辉沈新新
Owner 济南浪潮数据技术有限公司
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