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LUN expanding error

Publication Date:  2016-06-27 Views:  125 Downloads:  0
Issue Description

Receive error when try to expand the LUN.
"you are not allow to expand the LUN that provide value added functions such as Remote Replication"

Handling Process

Get the Operating Data and check the LUNs that have Remote Services and where:



Root Cause
The LUN you want to expand, provide value added functions such as Remote Replication.
Solution

Expanding LUN with Remote Replication

 

1.       Check if all remote replication pairs are in normal status.

Monitor the real-time performance statistics of LUN which need expand. Since we need format LUN and synchronize Replication after expanding, it’s better to do the LUN expanding with lower performance.

 

2.       Backup storage configuration.

Login Device Manager, choose “Setting ->Export Data” as below:

If everything is okay, we can start expanding. Otherwise, please contact Huawei Support.

 

3.       Split Consistency Group of Remote Replication.

Open “Data Protection -> Remote Replication -> Consistency Group”, choose the Consistency Group, and click “More -> Split”.

Then, confirm the operation and click OK.

4.       After Consistency Group split, choose the remote replication pair which LUN need expand and click “Remove”.

If you need expand more than one LUN, pleas remove them one by one as the step above.

5.       Open “Remote Replication” and choose the remote replication pair which LUN need expand and click “Delete”. You can see the Remote Replication pair no longer belongs to any Consistency Group.

After confirm the operation, click “OK”.

If you need expand more than one LUN, pleas remove them one by one as the step above.

 

6.       Open “Provisioning -> LUN -> LUN”, choose the LUN which need expand, then click “Expand”. Input the added capacity and click OK.

If you need expand more than one LUN, pleas remove them one by one as the step above.

Please expand the LUNs on both storages. Also, please note, the LUNs belong to a same Remote Replication pair should expand with the same capacity.

If you need expand more than one LUN, pleas remove them one by one as the step above.

7.       Back to “Data Protection -> Remote Replication”, click “Create” to recreate the Remote Replication pair.

Please note, here you should choose the first option, don’t choose the third one.

If you need expand more than one LUN, pleas remove them one by one as the step above.

8.       Now, you can see the new created Remote Replication pair is synchronizing.

We need to wait until the initial synchronization finish as below.

9.       Split the Remote Replication pair.

If you need expand more than one LUN, pleas remove them one by one as the step above.

 

10.   Open Consistency Group, choose the right Consistency Group, click “More” and choose “Add Remote Replication”.

If you need expand more than one LUN, pleas choose all of them into the list.

 

11.   Finally, choose the Consistency Group, click “More” and start synchronize.

 

END