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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 system force_write_back

change system force_write_back

Function

The change system force_write_back command is used to change the forcible write back state of the system.

Format

change system force_write_back switch=?

Parameters

Parameter

Description

Value

switch=?

Forcible write back state.

The value can be "no_force_writeback", "user_data_force_writeback", "all_data_force_writeback", or "all_data_force_writethrough", where:

  • "no_force_writeback": no forcible write back.
  • "user_data_force_writeback": forcible write back for user data.
  • "all_data_force_writeback": forcible write back for all data.
  • "all_data_force_writethrough": forcible write through for all data.

Views

Developer view

Usage Guidelines

OceanStor 2100 V3/6800 V3/2200 V3/5300 V3/2600 V3 for Video/5500 V3/5600 V3/5800 V3 storage systems support this command.

Example

  • Change the forcible write back state to "user_data_fore_writeback".
    developer:/>change system force_write_back switch=user_data_force_writeback 
    DANGER: You are about to set the forcible write back state. This operation caches data in the memory if the system cannot protect data in the memory. 
    Suggestion: If a fault causes data risks in the memory, rectify the fault as quickly as possible. 
    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. 
  • Change the forcible write back state to "all_data_force_writeback".
    developer:/>change system force_write_back switch=all_data_force_writeback 
    DANGER: You are about to set the forcible write back state. This operation caches data in the memory if the system cannot protect data in the memory. 
    Suggestion: If a fault causes data risks in the memory, rectify the fault as quickly as possible. 
    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. 
  • Change the forcible write back state to "no_force_writeback".
    developer:/>change system force_write_back switch=no_force_writeback 
    Command executed successfully.
  • Change the forcible write back state to "all_data_force_writethrough".
    developer:/>change system force_write_back switch=all_data_force_writethrough 
    DANGER: You are about to set the global write through status for the system. This operation may affect system performance. 
    Suggestion: Before performing this operation, ensure that the operation is necessary. You are advised to keep the system default status. 
    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

None

Translation
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Updated: 2019-07-12

Document ID: EDOC1000138402

Views: 630720

Downloads: 703

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