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Command Reference

OceanStor 18000 and 18000F V5 Series V500R007

This document is applicable to OceanStor 18500 V5, 18800 V5, 18500F V5, and 18800F V5 storage systems. It describes hardware installation of those storage systems for helping you easily and quickly finish the installation.

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create lun_copy local

create lun_copy local


The create lun_copy local command is used to create local logical unit number (LUN) copies. You can create local LUN copies for the local storage system by running this command.


create lun_copy local name=? source_lun_id=? target_lun_id=? [ copy_speed=? ]





name=? Name of a LUN copy.

The value contains 1 to 31 characters including digits, letters, underscores (_), hyphens (-), and periods (.).

source_lun_id=? ID of a source LUN.

To obtain the value, run "show lun general".

target_lun_id=? ID of a target LUN.

To obtain the value, run "show lun general".

copy_speed=? Rate of a LUN copy task.

The value can be:

  • "Low": indicates the low copy speed.
  • "Middle": indicates the medium copy speed.
  • "High": indicates the high copy speed.
  • "Highest": indicates the highest copy speed.
The default value is "Middle".



Usage Guidelines

  • The data of a source LUN overwrites that of a target LUN upon the start of a LUN copy task.
  • Before running this command, ensure that the selected source and target LUNs are exactly the ones you want to use for a LUN copy task, and that no host is accessing the target LUN.
  • Each pair of source and target LUNs must be on the same local storage system.
  • The capacity of a target LUN must be no less than that of a source LUN for a single LUN copy task.
  • Different LUN copies cannot share the same target LUN.


To create a LUN copy, where the name of the LUN copy is "test", the source LUN is LUN "0", the target LUN is LUN "1", and the rate of the LUN copy task is "high", run the following command:

admin:/>create lun_copy local name=test source_lun_id=0 target_lun_id=1 copy_speed=High
WARNING: You are about to build a LUN copy relationship between source LUN and target LUN. After this operation, the data on the target LUN will be overwritten by the data on the source LUN.
Suggestion:Before performing this operation, ensure that the selected source and target LUNs are correct, and the target LUN is not being read or written by hosts.
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: EDOC1000181601

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