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Trident Unable to Delete CommVault Snapshots on ONTAP Volumes with SVM-DR Protection

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trident-kubernetes
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SNAPX
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Applies to

  • Trident CSI Driver for Kubernetes/OpenShift
  • CommVault backup application
  • Volumes managed by Trident configured for Vserver-level SnapMirror (SVM-DR)

Issue

Snapshots created by CommVault via Trident for OpenShift persistent volumes are not deleted after backup completion, causing snapshot accumulation and PVCs to hang in the terminating state.

Log Output Examples:

time="2026-01-19T05:40:02Z" level=error msg="Could not begin splitting clone from snapshot." cloneVolumeName=trident_pvc_aef839c6_1bd8_4056_b993_b797092356b0 error="error splitting clone: API status: failed, Reason: This volume cannot be split as it is configured for protection using Vserver level SnapMirror. Change the protection type using \\"volume modify\\" command to make it unprotected., Code:13001" logLayer=core parentVolumeName=trident_pvc_a02d919e_d7ed_498c_8c6e_f4569796e5bf requestID=72d5f8fb-4377-475e-aae6-1951c1e6a5a0 requestSource=CSI snapshotName=snapshot-7c1d70d1-713f-4c3f-b2f8-49ec84cf2f46 workflow="snapshot=delete"

time="2026-01-19T05:40:02Z" level=warning msg="Retried locked snapshot delete, clone split failed, restarted timer." logLayer=core requestID=72d5f8fb-4377-475e-aae6-1951c1e6a5a0 requestSource=CSI secondsBeforeSplit=10.00 snapshot=pvc-a02d919e-d7ed-498c-8c6e-f4569796e5bf/snapshot-7c1d70d1-713f-4c3f-b2f8-49ec84cf2f46 workflow="snapshot=delete"

time="2026-01-19T05:40:02Z" level=error msg="Unable to delete snapshot from backend." backendName=ontapnas_10.8.64.16 backendUUID=edabf770-8e67-4c1d-b647-803b5cbd2790 error="snapshot snapshot-7c1d70d1-713f-4c3f-b2f8-49ec84cf2f46 backing volume trident_pvc_a02d919e_d7ed_498c_8c6e_f4569796e5bf is busy" logLayer=core requestID=72d5f8fb-4377-475e-aae6-1951c1e6a5a0 requestSource=CSI snapshotID=pvc-a02d919e-d7ed-498c-8c6e-f4569796e5bf/snapshot-7c1d70d1-713f-4c3f-b2f8-49ec84cf2f46 volume=pvc-a02d919e-d7ed-498c-8c6e-f4569796e5bf workflow="snapshot=delete"

 

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