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OceanStor UltraPath for vSphere 21.3.0 User Guide 03

This document covers the functions, features, installation, configuration, upgrade, uninstallation, maintenance, troubleshooting, and FAQs of OceanStor UltraPath for vSphere (UltraPath forvSphere). UltraPath for vSphere is the multipathing software developed by HuaweiTechnologies Co., Ltd (Huawei for short). The document aims at helping users to be fully familiar with UltraPath for vSphere and its use.
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Setting a Controller's Paths

Setting a Controller's Paths

Function

The set tpgstate command is used to enable or disable the paths of a specified controller.

Format

set tpgstate -a array-id -t tpg-id -s state

Parameters

Keyword and Parameter

Description

Default Value

-a array-id

ID of a storage system.

You can run show diskarray without an ID to display all storage system IDs.

None

-t tpg-id

ID of a controller.

None

-s state

Enabling or disabling a controller's path.

The value is either enable or disable.

  • enable: enables a controller's paths.
  • disable: disables a controller's paths.

None

Level

User root

Usage Guidelines

Once the command is run, UltraPath will not choose this path to deliver I/O.

When changing the controller of a storage system or before powering off the controller for maintenance, you can run this command to disable paths of the controller. After the paths are disabled, UltraPath for ESXi smoothly switches I/Os over to other controller's paths, preventing I/O latency caused by failback.

After the replacement or maintenance, you can run the command again to enable the paths of the controller, increasing redundance and balancing controller workload.

Example

Enable the paths of controller 0A of the storage system whose ID is 0.

~ # esxcli upadm set tpgstate -a 0 -t 0A -s enable 
Succeeded in executing the command.

System Response

None

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Updated: 2019-06-29

Document ID: EDOC1100052672

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