What does HRESULT 0x80830007 (ERROR_TIERING_CANNOT_PIN_OBJECT) mean?

ERROR_TIERING_CANNOT_PIN_OBJECT

What this result says about the disk model: tiering cannot pin object

ERROR_TIERING_CANNOT_PIN_OBJECT (0x80830007) is emitted by the tiering path when the target is not a regular file or supported volume object that the tiering provider can associate with a desired tier in the ERROR_TIERING_CANNOT_PIN_OBJECT path. The deciding object for ERROR_TIERING_CANNOT_PIN_OBJECT is file-to-tier placement metadata for the addressed volume, so the first investigation belongs there rather than in a generic “disk failure” bucket for ERROR_TIERING_CANNOT_PIN_OBJECT.

Storage tiering operates above a tiered Storage Spaces virtual disk and records desired placement separately from normal file allocation for ERROR_TIERING_CANNOT_PIN_OBJECT. Optimization may move data according to heat, whereas pinning expresses an explicit placement preference for a supported file or volume object in the ERROR_TIERING_CANNOT_PIN_OBJECT path. For ERROR_TIERING_CANNOT_PIN_OBJECT, this object model determines which identifiers, counts and ownership state are meaningful in the ERROR_TIERING_CANNOT_PIN_OBJECT path.

The standard message identifies the immediate condition, but ERROR_TIERING_CANNOT_PIN_OBJECT also requires the producer API, object topology and attempted state transition within the ERROR_TIERING_CANNOT_PIN_OBJECT workflow. Capture them before an automatic refresh advances the storage generation for ERROR_TIERING_CANNOT_PIN_OBJECT.

Capture the exact object generation

• Record volume GUID path at the instant ERROR_TIERING_CANNOT_PIN_OBJECT is returned, not after an automatic refresh.
• Correlate storage-space with the first ERROR_TIERING_CANNOT_PIN_OBJECT call and its transaction or job identifier.
• Export tier IDs for ERROR_TIERING_CANNOT_PIN_OBJECT; this is more useful than a drive letter or friendly name alone while diagnosing ERROR_TIERING_CANNOT_PIN_OBJECT.
• Verify file ID plus file-system identity belongs to the same storage generation that produced ERROR_TIERING_CANNOT_PIN_OBJECT.
• For ERROR_TIERING_CANNOT_PIN_OBJECT, preserve cluster owner node before a rescan; it anchors the failed object generation when ERROR_TIERING_CANNOT_PIN_OBJECT is returned.
• Attach optimization job state to the ERROR_TIERING_CANNOT_PIN_OBJECT incident so later cleanup cannot replace the original identity for ERROR_TIERING_CANNOT_PIN_OBJECT.
• Record requested pin target at the instant ERROR_TIERING_CANNOT_PIN_OBJECT is returned, not after an automatic refresh.

For ERROR_TIERING_CANNOT_PIN_OBJECT, keep this HRESULT as the primary result if rollback or cleanup reports another code; those later values describe recovery, not the first rejected invariant when ERROR_TIERING_CANNOT_PIN_OBJECT is returned.

Prove the boundary in a test volume

1. Capture the API parameters and object map that led to ERROR_TIERING_CANNOT_PIN_OBJECT; do not begin with cleanup.
2. Build a passing control with the same disks or image copy and preserve volume GUID path, storage-space and tier IDs, file ID plus file-system identity, cluster owner node, optimization job state and requested pin target within the ERROR_TIERING_CANNOT_PIN_OBJECT workflow.
3. Run the narrow transition described here: apply the operation to a regular file on a verified tiered volume, then compare with the original object type and pin state in the ERROR_TIERING_CANNOT_PIN_OBJECT path.
4. Compare resulting IDs, counts, health and ownership to prove the caller crossed the ERROR_TIERING_CANNOT_PIN_OBJECT invariant rather than suppressing it.

A useful diagnostic fork is ERROR_TIERING_FILE_IS_NOT_PINNED versus ERROR_TIERING_CANNOT_PIN_OBJECT. This code concerns the target is not a regular file or supported volume object that the tiering provider can associate with a desired tier; the alternate code should remain observable after the fix, proving the application did not suppress the entire subsystem for ERROR_TIERING_CANNOT_PIN_OBJECT.

Mechanism-specific note for ERROR_TIERING_CANNOT_PIN_OBJECT

Pinning is defined for supported file or volume objects for ERROR_TIERING_CANNOT_PIN_OBJECT. Record file attributes, reparse-point status and whether the object belongs to the tiered volume when ERROR_TIERING_CANNOT_PIN_OBJECT is returned. Directories, unsupported reparse targets or files on another volume should be rejected by the caller before invoking the tier provider within the ERROR_TIERING_CANNOT_PIN_OBJECT workflow.

Safe recovery path

Re-enumerate the volume, its storage tiers and the file object on the owner node; serialize optimization jobs and apply pinning only to supported objects on a live tiered volume in the ERROR_TIERING_CANNOT_PIN_OBJECT path. For ERROR_TIERING_CANNOT_PIN_OBJECT, apply the change through the supported storage API, then close and reacquire affected objects before retrying in the ERROR_TIERING_CANNOT_PIN_OBJECT path.

• The controlled A/B case changes only the invariant responsible for ERROR_TIERING_CANNOT_PIN_OBJECT.
• No unrelated disk, cluster owner, tier policy or virtual-disk backing file is altered to hide ERROR_TIERING_CANNOT_PIN_OBJECT.
• Health, synchronization or job state reaches a terminal value consistent with the repaired ERROR_TIERING_CANNOT_PIN_OBJECT operation.
• Telemetry includes both symbolic names when ERROR_TIERING_CANNOT_PIN_OBJECT or ERROR_TIERING_FILE_IS_NOT_PINNED occurs again.

A reboot, blanket disk conversion or deletion of storage metadata is not a justified first response to ERROR_TIERING_CANNOT_PIN_OBJECT; it changes multiple invariants and can erase the evidence needed to identify the defect for the ERROR_TIERING_CANNOT_PIN_OBJECT request.

Technical references

• Microsoft: MSFT_FileStorageTier class — defines the tiering objects used to interpret ERROR_TIERING_CANNOT_PIN_OBJECT.
• Microsoft: Set method of MSFT_FileStorageTier — primary API or object-model reference for the ERROR_TIERING_CANNOT_PIN_OBJECT boundary.
• Microsoft: Optimize-Volume — use this source to verify tiering state and parameters for ERROR_TIERING_CANNOT_PIN_OBJECT.
• Microsoft: fsutil tiering — documents the supported management path relevant to ERROR_TIERING_CANNOT_PIN_OBJECT.

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