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OceanStor UltraPath for vSphere V100R008C50 User Guide 06

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 Working Mode for UltraPath

Setting Working Mode for UltraPath

Function

The set workingmode is used to set cross-controller or intra-controller load balancing of UltraPath.

Format

set workingmode [ -a array-id | -l vlun-id ] -m mode

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

-l vlun-id

ID of a virtual LUN.

You can run show vlun without an ID to display all virtual LUN IDs.

None

-m mode

Load balancing mode of UltraPath.

The value can be 0 or 1.
  • 0: cross-controller load balancing mode. That is, I/Os are delivered through paths of all controllers.
  • 1: intra-controller load balancing mode. That is, I/Os are delivered through paths of the current working controller.

1

Level

User root

Usage Guidelines

NOTE:
If cross-controller load balancing mode is used, UltraPath for ESXi does not distinguish between preferred and non-preferred working controllers of a LUN and uses all paths to deliver I/Os. For an OceanStor storage system with asymmetric active-active controllers, I/Os are forwarded between controllers, increasing I/O processing latency. Therefore, cross-controller load balancing is recommended only when the performance bottleneck lies in the transfer paths between a host and the storage system.
  • Run set workingmode -a array-id -m mode to set a working mode for a specified storage system.
  • set workingmode -l vlun-id -m mode to set a working mode for a specified virtual LUN.

Example

  • Set the working mode of the storage system whose ID is 0 to Cross-controller load balancing.
    ~ # esxcli upadm set workingmode -a 0 -m 0
    Succeeded in executing the command.
  • Set the working mode of the LUN whose ID is 0 to Cross-controller load balancing.
    ~ # esxcli upadm set workingmode -l 0 -m 0
    Succeeded in executing the command.

System Response

None

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Updated: 2019-03-06

Document ID: EDOC1000105152

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