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Aggregates degraded due to incorrect data partition ownership after switchback

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Applies to

  • ONTAP 9
  • MetroCluster IP
  • Switchover/switchback
  • Advanced Disk Partitioning (ADP)

Issue

  • After swtichback aggregates are in degraded state with local plex offline:

Aggregate aggr1 (online, raid_dp, mirror degraded, fast zeroed) (block checksums  Plex /aggr1/plex0 (offline, failed, inactive)

  • Disk/container ownership shows that P1/P2  was not updated properly and they show as owned by the DR cluster:

Cluster_B::*> disk show -partition-ownership
Disk     Partition Home              Owner    
-------- --------- ----------------- ---------
1.10.0   Container node_B_2          node_B_2 
         Root      node_B_2          node_B_2 
         Data1     node_B_1          node_A_1 
         Data2     node_B_2          node_A_2 

  • EMS shows messages for left behind disks/aggregates: 

Thu Dec 13 [NodeA1: config_thread: raid.mcc.leftBehindAggr:notice]: Aggregate aggrB2 was left behind during switchback.
Thu Dec 13 [NodeA1: config_thread: raid.mcc.leftBehindSpare:notice]: Disk 0m.i1.2L16 was left behind during switchback.

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