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Advanced O&M Command Reference

OceanStor 2800 V5 V500R007

This document is applicable to OceanStor 2800 V5. Based on the CLI, this document describes how to use various commands classified by functions and how to set the CLI and manage the storage system through these commands. The document that you browse online matches the latest C version of the product. Click Download to download documents of other C versions.

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change mp_mode

change mp_mode


The change mp_mode command is used to change the information about the white list of heterogeneous disk arrays.


change mp_mode record_id=? path_selector=? fail_back=? fail_over=?





record_id=? Record ID.

The value can be an integer from 0 to 2147483647. To obtain the value, run "show mp_mode".

path_selector=? Algorithm used by a storage system to select a path.

The value can be "FIX", "ROUND_ROBIN", or "LEAST_QUEUE".

fail_back=? Mode used by a storage system to restore faulty links.


  • FAILBACK_IMMEDIATE: Failback will be performed immediately.
  • NOT_FAILBACK: Failback will not be performed.
  • DELAY_FAILBACK: Failback will be postponed.
fail_over=? Whether path failover is supported.

The value can be "ENABLE" or "DISABLE", where,

  • ENABLE: to enable failover.
  • DISABLE: to disable failover.


Developer view

Usage Guidelines



Change the information about the white list of heterogeneous disk arrays.

developer:/>change mp_mode record_id=59 path_selector=FIX fail_back=NOT_FAILBACK fail_over=ENABLE
WARNING: You are about to change the whitelist configurations of the corresponding heterogeneous array. This operation may affect the service performance of the heterogeneous array.
Suggestion: Before performing this operation, ensure that you know the impact of the heterogeneous path selection algorithm, failover policy, and failback policy on service performance.
Have you read warning message carefully?(y/n)y
Are you sure you really want to perform the operation?(y/n)y
Command executed successfully.

System Response


Updated: 2020-01-17

Document ID: EDOC1000181575

Views: 728448

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