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Azure CVO slowness and reboot failed with timeout on bladeAggrTable_iterartor::next()

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Category:
cloud-volumes-ontap-cvo
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Perf
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Applies to

  • Cloud Volumes ONTAP(CVO)
  • Microsoft Azure
  • Single Node
  • Fabric Pool to Azure page blob
  • SnapCenter 
  • Snapvault
  • Microsoft Structured Query Language (SQL)

Issue

  • Azure single node CVO slowness and subsequent reboot to mitigate slowness temporarily failed with error as timeout on bladeAggrTable_iterartor::next()
 
EMS.log:
 
Sun Jan 01 2022 00:00:00 +00:00 system node reboot :: Error: Timeout: Operation "bladeAggrTable_iterator::next()" took longer than 25 seconds to complete [from mgwd on node "CVOCluster-01" (VSID: -1) to vldb at 127.0.0.1]
 
  • Also seen are panics below:
 
EMS.log:
 
Sun Jan 01 2022 00:00:00 [CVOCluster-01: ThreadHandlerun: sk.panic:alert]: Panic String: kma: object 0xfffff80700000000 is not allocated in SK process ThreadHandlerun on release 9.9.0 (C)

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Case Citation
f4a390a7-4cd3-493a-98c1-0e04f7762f20