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ESX Hosts losing access to LUNs regularly along with Aggregate reporting long CP's

Views:
256
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
san
Last Updated:

Applies to

  • ONTAP 9.x
  • VMware ESXi 6.7 (Update 3)
  • Cisco UCS B200M4/5

Issue

  • VMware critical alert for datastore path down
  • Poor performance and alerts for SQL virtual machines

vmhba0:C0:T66:L43 is down. Affected datastores: Path redundancy to storage device naa.xyz degraded. Path vmhba1:C0:T78:L10 is down. Affected datastores:

wafl_exempt00: wafl.cp.toolong:error]: Aggregate_xyz_sata_aggr1 experienced a long CP.
WARNING: ScsiDeviceIO: 12345: Device naa.123456 performance has deteriorated. I/O latency increased from average value of 8000 microseconds to 1000008 microseconds

 

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