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Advanced O&M Command Reference

OceanStor 18000 V3 Series V300R006

This document is applicable to OceanStor 18500 V3 and 18800 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 lun_background pre_allocate

change lun_background pre_allocate

Function

The change lun_background pre_allocate command is used to enable or disable LUN background pre-allocate function.

Format

change lun_background pre_allocate enabled=?

Parameters

Parameter

Description

Value

enabled=?

Indicates whether LUN background pre_allocate is enabled.

The value can be start or stop.

Views

Developer view

Usage Guidelines

This command is applicable only to the local controller.

Example

  • To enable LUN background pre-allocate, run the following command:
    developer:/>change lun_background pre_allocate enabled=start 
    WARNING: You are about to modify the thick LUN pre-allocation function of this controller.If you set the value to "stop", the pre-allocation function will be disabled for all the thick LUNs on the controller, and thick LUNs generated afterwards will not be pre-allocated. This will degrade service performance. 
    Suggestion: Take note of the previously mentioned risks before executing the command. 
    Have you read warning message carefully?(y/n)y 
    Are you sure you really want to perform the operation?(y/n)y 
    Command executed successfully.
  • To disable LUN background pre-allocate, run the following command:
    developer:/>change lun_background pre_allocate enabled=stop 
    WARNING: You are about to modify the thick LUN pre-allocation function of this controller.If you set the value to "stop", the pre-allocation function will be disabled for all the thick LUNs on the controller, and thick LUNs generated afterwards will not be pre-allocated. This will degrade service performance. 
    Suggestion: Take note of the previously mentioned risks before executing the command. 
    Have you read warning 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: EDOC1000138389

Views: 496757

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