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Huawei SAN Storage Host Connectivity Guide for Red Hat

HUAWEI SAN Storage Host Connectivity Guide for Red Hat Servers

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Storage System Configuration

If you use UltraPath, retain the default initiator settings. Do not select Uses third-party multipath software.

Figure 6-4 Initiator setting when UltraPath is used

Host Configuration

Install UltraPath by following instructions in the OceanStor UltraPath for Linux User Guide.

After you install UltraPath, set the trespass policy for LUNs as follows:

This configuration must be performed on all hosts separately. Retain the default settings for other parameters.

  • For UltraPath earlier than 21.2.0, it is recommended that you run the set luntrespass command to disable the trespass policy.
    UltraPath CLI #3 >set luntrespass=off 
    The current configuration will overwrite the configuration of all VLUNs in this array.  
    Are you sure you want to continue? [y,n]: y  
    Succeeded in executing the command.
    The command format is set luntrespass={ on | off } [ array_id=ID | vlun_id={ ID | ID1,ID2... | ID1-ID2 } ]. Table 6-3 describes the key parameters in the command.
    Table 6-3 Parameter description



    Default Value

    { on | off }

    Trespass policy of LUNs

    • on: Switchover of LUNs' working controller is enabled.
    • off: Switchover of LUNs' working controller is disabled.



    ID of the storage array

    You can run the show array command to query the ID of the storage array.


    vlun_id={ ID | ID1,ID2... | ID1-ID2 }

    ID of the virtual LUN

    You can run the show vlun type=all command to query the IDs of all virtual LUNs.


  • For UltraPath 21.2.0 and later, it is recommended that you retain the default settings (the trespass policy is disabled by default).
Updated: 2020-01-17

Document ID: EDOC1000150157

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