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How are MDV volumes supposed to be located over aggregates ?

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How are MDV volumes supposed to be located over aggregates?
  • In a MetroCluster configuration, the best practice is to have MDV volumes located on 2 different mirrored data aggregates (on 8 node MetroClusters distributed across 2 HA pairs). 
  • You can move a metadata volume from one aggregate to another aggregate in a MetroCluster configuration.
  • You might want to move a metadata volume when the source aggregate is decommissioned or unmirrored, or for other reasons.

 

  • This procedure describes that if both the MDV volumes are hosted on one aggregate, one of them should be moved to another aggregate.
  • Perform the following steps:
    • Verify that the volumes are on the same aggregate
      Cluster_A::> volume show -fields volume,aggregate
      vserver         volume                                     aggregate          
      --------------- ------------------------------------------ -----------------------
      Cluster_A       MDV_CRS_6cc9b517a26d11e48b6100505697f7e6_A a1_required_data_aggr_1 <== MDV on same aggregate
      Cluster_A       MDV_CRS_6cc9b517a26d11e48b6100505697f7e6_B a1_required_data_aggr_1 <== MDV on same aggregate
      Cluster_A       MDV_CRS_7ec06dc9a26d11e4b97100505697f7e9_A b1_required_data_aggr_1
      Cluster_A       MDV_CRS_7ec06dc9a26d11e4b97100505697f7e9_B b2_required_data_aggr_1

       
    • Move the volume
      • Set the privilege to advanced

Cluster_A::> set advanced

  • Run the volume move command secondary metadata volume to another aggregate.
  • Follow the procedure from the MetroCluster service guide (Moving a metadata volume in MetroCluster configurations).
  • Once the move of the volume is complete, the metadata volumes will be located on two separate aggregates.
  • Change the privilege mode back to the admin

Cluster_A::> set -privilege admin

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