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Advanced O&M Command Reference

OceanStor 18000 and 18000F V5 Series V500R007

This document is applicable to OceanStor 18500 V5, 18800 V5, 18500F V5, and 18800F V5. Based on the CLI, this document describes how to use various commands classified by functionsand how to set the CLI and manage the storage system through these commands.

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change ddp metadata_rebuild

change ddp metadata_rebuild


The change ddp metadata_rebuild command is used to set functions related to metadata reconstruction of deduplication.


change ddp metadata_rebuild lun_id=? controller=? action=? [ speed=? ]





lun_id=? LUN ID.

You can run the "show lun dedup_compress" command to obtain the LUN ID.

controller=? Controller ID.

The value is in the format of "XA" or "XB" or "XC" or "XD", where the "X" is an integer ranging from 0 to 3, for example: "0A", "1C".

action=? Reconstruction action.

The value can be "start", "stop", or "set_speed", where:

  • "start": Enables metadata reconstruction of deduplication.
  • "stop": Stops metadata reconstruction of deduplication.
  • "set_speed": Sets the metadata reconstruction speed of deduplication.
speed=? Reconstruction speed.

The value can be "normal" or "high", where:

  • "normal": The reconstruction speed is normal and reconstruction has minor impact on system performance.
  • "high": The reconstruction speed is high and reconstruction has the largest impact on system performance.
By default, the value is "normal".


Developer view

Usage Guidelines

  • Before running this command, check whether the LUN ID that you want to select is correct.
  • When running this command, specify a controller ID.


Enable the metadata reconstruction function of deduplication.

developer:/>change ddp metadata_rebuild lun_id=0 controller=0A action=start
Command executed successfully.

System Response


Updated: 2020-01-17

Document ID: EDOC1000181602

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