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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 the HyperMetro Working Mode

Setting the HyperMetro Working Mode

Function

The set hypermetro workingmode command is used to set the HyperMetro working mode.

Format

set hypermetro workingmode -m mode -p primary_array_id [ -l vlun_id ]

Parameters

Parameter

Description

Default Value

workingmode={ priority | balance }

HyperMetro working mode.

Possible values are priority and balance, where:
  • priority: primary array mode
  • balance: load balance mode

priority

primary_array_id=ID

ID of the primary array.

You can run show diskarray to display all array IDs.

NOTE:
  • In priority mode, the primary array indicates the array that delivers I/O first.
  • In balance mode, the primary array indicates the array where the first fragment range resides.
  • If an array is connected to multiple hosts, the array ID varies on different hosts. Use the array SN to determine whether the arrays queried on different hosts are the same.

None

-l vlun_id

ID of an virtual HyperMetro LUN.

Run the show vlun type=hypermetro command to obtain the IDs of the virtual HyperMetro LUNs.

None

Level

User root

Usage Guidelines

NOTE:
  • Setting the HyperMetro working mode of a specified virtual LUN with a higher priority than that of storage systems. If the HyperMetro working mode of a virtual LUN has been set, its working mode remains unchanged after the HyperMetro working mode of storage systems is set.
  • When the working mode is set to load balance mode, UltraPath chooses to deliver a specific array based on the start address of I/Os, fragment size, and priority array.

    For example, if the fragment size is 128 MB, then the I/Os with start addresses from 0 MB to 128 MB are delivered to the priority array, and the I/Os with start addresses from 128 MB to 256 MB are delivered to non-priority arrays. When the working mode is set to primary array mode, UltraPath delivers I/Os to the priority array. UltraPath will deliver I/Os to non-priority arrays only when the primary array encounters a fault.

  • Run the set hypermetro workingmode -m { priority | balance } -p primary_array_id command to set the HyperMetro working mode for all storage systems.
  • Run the set hypermetro workingmode -m { priority | balance } -p primary_array_id -l vlun_id command to set the HyperMetro working mode of a specific virtual LUN.

Example

  • Set the HyperMetro working mode to primary array mode for all storage systems, and set the storage systems whose ID is 0, to the primary array.
    ~ # esxcli upadm set hypermetro workingmode -m priority -p 0 
    Succeeded in executing the command.
    
  • Set the HyperMetro working mode of the virtual LUNs whose ID is 0, to primary array mode, and set the storage systems whose ID is 0, to the primary array.
    ~ # esxcli upadm set hypermetro workingmode -m priority -p 0 -l 0
    Succeeded in executing the command.
    

System Response

None

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Updated: 2019-03-06

Document ID: EDOC1000105152

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