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Advanced O&M Command Reference

OceanStor 18000 and 18000F V5 Series V500R007

This document is applicable to OceanStor 18500 V5, 18800 V5, 18500F V5, and 18800F 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 tgt_switch lun_4k_mapping

change tgt_switch lun_4k_mapping

Function

The change tgt_switch lun_4k_mapping command is used to enable or disable the 4K LUN mapping.

Format

change tgt_switch lun_4k_mapping switch=?

Parameters

Parameter

Description

Value

switch=?

Status of the 4K LUN mapping switch.

The value can be "on" or "off", where:

  • "on": turns on the 4K LUN mapping switch. After this switch is turned on, a host can map a maximum of 1023 LUNs in 5600 V5, and 5600F V5. A host can map a maximum of 2047 LUNs in 5800 V5, and 5800F V5. A host can map a maximum of 4095 LUNs in the following 12 product models: 6800 V5, 6800F V5,18500 V5, 18500F V5,18800 V5, and 18800F V5.
  • "off": turns off the 4K LUN mapping switch. After this switch is turned off, the maximum of LUNs that a host can map is explained in the product specifications.

Views

Developer view

Usage Guidelines

  • After this switch is turned on, a host can map a maximum of 1023 LUNs in5600 V5, and 5600F V5. A host can map a maximum of 2047 LUNs in5800 V5, and 5800F V5. A host can map a maximum of 4095 LUNs in the following 12 product models: 6800 V5, 6800F V5, 18500 V5, 18500F V5,18800 V5, and 18800F V5.
  • After this switch is turned off, the maximum of LUNs that a host can map is explained in the product specifications.
  • The 4K LUN mapping only supports Solaris 10 DMP or MPIO multipath software, and EMC VPLEX. In other cases, compatibility problems may occur. If you need to turn on this switch, contact Huawei technical support engineers.

Example

Enable the 4K LUN mapping.

developer:/>change tgt_switch lun_4k_mapping switch=on 
Command executed successfully.

System Response

None

Translation
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Updated: 2019-07-11

Document ID: EDOC1000181602

Views: 652150

Downloads: 56

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