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NFS outage caused by QoS limits consuming excessive exec contexts

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Category:
ontap-9
Specialty:
NAS
Last Updated:

Applies to

  • ONTAP 9
  • Quality of Service (QoS)
  • NFS

Issue

  • NFS hang was seen from all clients on all Vserver(s) on the node
  • QoS policies very limiting
  • Pegged nwk_exempt cpu threads
  • NFS server acks after 100ms

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