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Volume Not On Preferred Path due to host connection

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Applies to

  • NetApp E-Series
  • Volume Not On Preferred Path (VNOPP)

Issue

  • System reports VNOPP by an Auto Volume Transfer (AVT) or Redundant Disk Array Controller (RDAC) failover event in MAJOR-EVENT-LOG :

Date/Time: 20XX-05-10 22:26:11
Sequence number: 69291
Event type: 4011
Event category: Error
Priority: Critical
Event needs attention: true
Event send alert: true
Event visibility: true
Description: Volume not on preferred path due to AVT/RDAC failover
Event specific codes: 0/0/0
Component type: Controller
Component location: Shelf XX, Bay X
Logged by: Controller in bay X

  • RECOVERY-GURU-PROCEDURES reports NON_PREFERRED_PATH-Recovery Failure Type Code: 10
  • IO shipping event occurred prior to VNOPP, and specify the host(s) causing the IO and the controller being affected:

A:5/10/XX 10:26:11 PM (22:26:11) 69291 4011 Volume not on preferred path due to AVT/RDAC failover - Shelf XX, Bay X <--CRITICAL
B:5/10/XX 10:21:11 PM (22:21:11) 69290 2044 IO shipping implicit volume transfer - Volume Volumename
----> Shipped/Owned IOs: 186360/61155, Host ID: XXX

  • All the I/O operations are concentrated on one controller, causing an increase in CPU usage.

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