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Advanced O&M Command Reference

OceanStor 2800 V5 V500R007

This document is applicable to OceanStor 2800 V5. 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 remote_replication clear_difference

change remote_replication clear_difference


The change remote_replication clear_difference command is used to delete the logs of incremental data on the secondary LUN.


change remote_replication clear_difference operation=? remote_replication_id=?





remote_replication_id=? Indicates the ID of a remote replication.

To obtain the value, run the "show remote_replication general" command without any parameters.

operation=? Indicates the operation.

The value can be "recycle" or "unrecycle", where

  • recycle: to start recycling the logs.
  • unrecycle: to stop recycling logs.


Developer view

Usage Guidelines

  • This command is used to delete the logs of incremental data on the secondary LUN of a remote replication. Run this command in two steps:
    • Run the "change remote_replication clear_difference operation=recycle remote_replication_id=? " command first.
    • Run the "change remote_replication clear_difference operation=unrecycle remote_replication_id=? " command. The logs of incremental data on the secondary LUN can be deleted only after the two commands are executed successfully.
  • Use this command under R&D engineers' guidance.


  • To start deleting the logs of incremental data on the secondary LUN of remote replication 0, run the following command.

    developer:/>change remote_replication clear_difference operation=recycle remote_replication_id=0
    DANGER:You are about to delete the logs of the incremental data from the secondary LUN of a remote replication. If write operations have been performed on the secondary LUN, this operation may cause data inconsistency between the primary and secondary LUNs.
    Suggestion: Contact technical engineers before performing this operation.
    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.
  • To stop deleting the logs of incremental data on the secondary LUN of remote replication 0, run the following command:

    developer:/>change remote_replication clear_difference operation=unrecycle remote_replication_id=0
    Command executed successfully.

System Response


Updated: 2020-01-17

Document ID: EDOC1000181575

Views: 731580

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