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SMB I/O interruption during ONTAP upgrade without CA

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ontap-9
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Applies to

  • ONTAP 9
  • SMB /CIFS
  • Non‑Continuous Availability (non‑CA) SMB shares

Issue

  • SMB-mounted volumes experience I/O interruption during ONTAP upgrade
  • Some Linux VMs show:
    • Short I/O pause
    • Permanent write stop in workload tool (vdbench)
  • Only a subset of SMB clients is impacted
  • Impact timing differs between VMs

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