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Implementation method and device of distributed consistency group and DRM equipment

An implementation method and consistent technology, applied in the field of communication, can solve the problems of difficult to guarantee millisecond-level clock synchronization, high performance consumption, and multiple network interactions.

Pending Publication Date: 2019-11-12
SANGFOR TECH INC
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] At present, there are two fence schemes for distributed consistency groups: one is cross-host synchronization clock scheme, the disadvantage is that it is difficult to guarantee millisecond-level clock synchronization; the other is to send silent commands to all hosts, and wait for all hosts to return correct responses (that is, ACK) and then take a consistent snapshot of all disks, and then send the unquiet command. The disadvantage is that it requires multiple network interactions and consumes a lot of performance.

Method used

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  • Implementation method and device of distributed consistency group and DRM equipment
  • Implementation method and device of distributed consistency group and DRM equipment
  • Implementation method and device of distributed consistency group and DRM equipment

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Embodiment Construction

[0043] The core of the present invention is to provide a method for implementing a distributed consistency group, which can reduce the blocking time and significantly reduce the impact of CDP on the performance of the main IO path; another core of the present invention is to provide a method for implementing a distributed consistency group An implementing device, a DRM device, and a computer-readable storage medium.

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without makin...

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Abstract

The invention discloses an implementation method and device of a distributed consistency group. The method comprises the following steps: sending a message for confirming whether a message can be submitted or not to a silence control module of each virtual machine in the distributed consistency group; when messages which can be submitted and are sent by all the silence control modules are receivedwithin set time, directionally sending messages to be submitted to all the silence control modules, and making all the silence control modules to execute silence operation; when a correct response message sent by the silence control module is received, directionally sending a submission message to the corresponding silence control module, so that the corresponding silence control module executesa fence hitting operation; receiving a completion submission message sent by each silence control module after completing the fence hitting operation. According to the method, on the basis of ensuringthe consistency of the distributed consistency group, the blocking time is reduced. The invention further discloses an implementation device of the distributed consistency group, DRM equipment and acomputer readable storage medium, which have the above beneficial effects.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method, device, DRM device and computer-readable storage medium for realizing a distributed consistency group. Background technique [0002] CDP (continuous data protection) continuous data protection technology, which can restore data to any point in time. In a multi-host environment, in order to ensure that associated virtual machines distributed on different hosts can be pulled up at the same time, the CDP disaster recovery system needs to generate the same cross-host consistency fence point. [0003] At present, there are two fence schemes for distributed consistency groups: one is cross-host synchronization clock scheme, the disadvantage is that it is difficult to guarantee millisecond-level clock synchronization; the other is to send silent commands to all hosts, and wait for all hosts to return correct responses (that is, ACK) and then take a consistent snapshot o...

Claims

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Application Information

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IPC IPC(8): G06F11/14H04L1/16
CPCG06F11/1489H04L1/1607G06F2009/45595Y02P90/02
Inventor 付忞曾震
Owner SANGFOR TECH INC
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