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Advanced O&M Command Reference

OceanStor 2000, 5000, and 6000 V3 Series V300R006

This document is applicable to OceanStor 2200 V3, 2600 V3 Video Surveillance Edition, 2600 V3, 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3. Based on the CLI, this document describes how to use various commands classified by functions and how to set the CLI and manage the storage system through these commands. The document that you browse online matches the latest C version of the product. Click Download to download documents of other C versions.
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change controllers_expansion cancel

change controllers_expansion cancel


The change controllers_expansion cancel command is used to roll back the configuration of a cluster when controllers to be expanded fail to be added to the cluster.


change controllers_expansion cancel controller_total=?






Total number of controllers in the cluster.

The value is an integer between 2 and 6.


Developer view, Engineer view

Usage Guidelines

  • After the controller fails to be expanded, before executing the rollback command, disconnect the network link between the original cluster of the expanded controllers and the cluster of controllers to be expanded. Details are as follows:

    Devices in IP Scale-Out network:

    • On the devices in the switch network and direct network, disconnect the network link of the devices to be expanded and devices in live network, and run the rollback command on a controller of the original cluster.
    • For OceanStor 6800 V3 devices, when expanding 2 controllers to 4 controllers or expanding 6 controllers to 8 controllers, remove the controller to be expanded first and run the rollback command.

2.OceanStor 2100 V3/6800 V3/2600 V3/5300 V3/5500 V3/5600 V3/5800 V3 storage systems support this command.


To reset the number of controllers to 2 after cluster expansion failed, run the following command:

engineer:/>change controllers_expansion cancel controller_total=2 
DANGER: You are going to execute the operation of cancelling bay.This operation will cause the service discontinuous and the data lost. 
Suggestion: Before you perform this operation, ensure that you have input the correct parameter and no service is running on the controllers that you want to cancel. 
Have you read danger alert message carefully?(y/n)y 

Are you sure you really want to perform the operation?(y/n)y 
Command executed successfully.

System Response


Updated: 2019-07-12

Document ID: EDOC1000138402

Views: 676652

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