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| ERROR_CLUSTER_BACKUP_IN_PROGRESS | ERROR_CSV_VOLUME_NOT_LOCAL |
ERROR_NON_CSV_PATH
A clustered disk path is not automatically a CSV path
ERROR_NON_CSV_PATH means an API that requires Cluster Shared Volume semantics received a path outside the CSV namespace. A volume may be shared storage or a clustered Physical Disk resource without being added to CSV. CSV paths are normally exposed beneath ClusterStorage and support coordinated access from multiple nodes.
Resolve the path to its volume and confirm that the disk appears in Get-ClusterSharedVolume. Avoid checking only whether the path exists locally; a normal mount point, redirected share, or non-CSV clustered disk can still be reachable. If the workload requires CSV, add supported storage to CSV and use the cluster-managed mount path. Otherwise call an API that accepts ordinary volume semantics.
Path identity checks
- Resolved volume GUID and cluster disk resource.
- Membership in Get-ClusterSharedVolume output.
- ClusterStorage mount path used by the application.
- Whether the API requires CSV coordination or merely shared storage.
References
- Microsoft: CSV namespace and concurrent access model
- Microsoft: adding and managing CSV storage
- Microsoft: querying CSV state by volume and node
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