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Automatic Volume Expansion Not Working After Upgrade to Trident 26.02

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Applies to

  • NetApp Trident v26.02
  • Kubernetes clusters using Trident
  • ONTAP backends (e.g., AFF-C60)
  • Automatic Volume Expansion (autogrow) feature

Issue

Automatic volume (LUN) expansion was not working in a Kubernetes cluster using Trident 26.02, despite correct configuration of allowVolumeExpansion and autogrowPolicy in the StorageClass. Volumes did not automatically grow when utilization thresholds were crossed.

Log Output and Observed Behavior:

  • No errors related to autogrow in Trident controller logs.
  • “unknown field” warnings in Trident controller log.
  • TVP (TridentVolumePublication) CRDs missing fields such as autogrowPolicy, storageClass, backendUUID, and pool.
  • Existing TVP objects did not contain autogrow-related fields, causing the autogrow scheduler to ignore configured policies.

level=debug msg="Syncing volume publications" logLayer=core requestID=dabd4f17-1d1d-4533-9511-d562095cec78 requestSource=Internal vpsRemaining=1 vpsTotal=184 workflow="core=bootstrap"
level=debug msg=">>>>>> syncVolumePublications" logLayer=core nodeName=<node name> requestID=dabd4f17-1d1d-4533-9511-d562095cec78 requestSource=Internal volumeName=pvc-uuid workflow="core=bootstrap"
I0420 13:20:27.353816       1 warnings.go:107] "Warning: unknown field \"backendUUID\""
I0420 13:20:27.353839       1 warnings.go:107] "Warning: unknown field \"pool\""
I0420 13:20:27.353844       1 warnings.go:107] "Warning: unknown field \"storageClass\""

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