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OceanStor 2200 V3 and 2600 V3 Storage System V300R005 SmartVirtualization Feature Guide 07

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Confirming the Completion of the Host Path Switchover

Confirming the Completion of the Host Path Switchover

Run the related command in the local storage system to ensure that I/Os are transmitted through the paths between the local storage and the application server.

Precautions

The operation of checking whether a host path is switched over successfully needs to be performed in developer mode on the CLI management interface of the local storage system, and this operation can be only performed by Huawei technical support.

Before performing this operation, ensure that the operations in Checking the Multipathing Status, Switching Over Host Paths, and Migrating the Reserved Information have been completed. Otherwise, this operation may have risks such as data inconsistency and service interruption.

Procedure

  1. Check whether the host path of LUNs is switched over to the target storage system.
    1. Log in to the management interface of the local storage system's CLI and go to the developer mode.

      Log in to the CLI as user admin and enter change user_mode current_mode user_mode=developer. Then press Enter.

      admin:/>change user_mode current_mode user_mode=developer
      developer:/>  \\Successful login
      

    2. Run the change lun_takeover finish_switch_path lun_id=? command to ensure that I/Os are transmitted through the paths between the local storage and the application server.

      NOTE:

      For details, see OceanStor 2200 V3&2600 V3 Storage System V300R005 Restricted Command Reference.

  2. Optional: If host nodes are clustered on the network and the cluster is not running AIX or Oracle RAC or and not configured with SCSI-3 or SCSI-2 reservation, run stop iosuspension vlun_id=<id> on each of the host nodes to remove I/O suspension.

Follow-up Procedure

If the application server has been installed with UltraPath earlier than V100R008C20, it cannot identify the device model of OceanStor 2200 V3/2600 V3. If you need to create a LUN on OceanStor 2200 V3/2600 V3 to expand the capacity of host applications, set the masquerading property of the LUN to extended masquerading to inherit LUN information on the heterogeneous storage system. The information includes VID, PID, and SCSI protocol version. For details, see the section about LUN creation in OceanStor 2200 V3&2600 V3 Storage System V300R005 Basic Storage Service Guide for Block.

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Updated: 2018-12-29

Document ID: EDOC1000106155

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