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Unknown aggregate found in cluster with volumes inaccessible

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Category:
ontap-9
Specialty:
hw
Last Updated:

Applies to

ONTAP 9 

Issue

  • Aggregate was showing as unknown and volumes were inaccessible :
Cluster-01::> aggr show
Aggregate     Size Available Used% State   #Vols  Nodes            RAID Status
--------- -------- --------- ----- ------- ------ ---------------- ------------
N1_Aggr1   94.65TB   94.65TB    0% online       0 Cluster1- raid_tec,
                                                  N01              normal
N1_Aggr2   731.4TB   598.8TB   18% online       2 Cluster1- raid_tec,
                                                  N01              normal
N1_Aggr3     -         -     - unknown      - Cluster1- -
  • Vreport showed entries for this aggregate with the output below
Cluster-01::*> debug vreport show
aggregate Differences:
Name             Reason   Attributes
--------         -------  ---------------------------------------------------
N1__Aggr3     Present in VLDB Only
                          Node Name: Cluster1-N01
                          Aggregate UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
                          Aggregate State: unknown
                          Aggregate Raid Status:
                          Aggregate HA Policy:
                          Is Aggregate Root: false
                          Is Composite Aggregate: false

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