What does HRESULT 0x80830008 (ERROR_TIERING_FILE_IS_NOT_PINNED) mean?

ERROR_TIERING_FILE_IS_NOT_PINNED

Why this is narrower than a generic disk error: tiering file is not pinned

Windows returns ERROR_TIERING_FILE_IS_NOT_PINNED, value 0x80830008, at the tiering boundary. It means that an unpin or pin-state query targeted a file that has no explicit tier assignment for ERROR_TIERING_FILE_IS_NOT_PINNED. For ERROR_TIERING_FILE_IS_NOT_PINNED, preserve the exact handle and generation of file-to-tier placement metadata for the addressed volume before any rescan changes the evidence.

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

Diagnosis of ERROR_TIERING_FILE_IS_NOT_PINNED should begin with the object model and generation current at the failure in the ERROR_TIERING_FILE_IS_NOT_PINNED path. A later successful enumeration may describe a replacement object and cannot retroactively validate the rejected request within the ERROR_TIERING_FILE_IS_NOT_PINNED workflow.

Storage facts that change the diagnosis

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

Do not overwrite ERROR_TIERING_FILE_IS_NOT_PINNED with a close, detach or rollback error. Preserve the causal order so the original storage contract remains visible within the ERROR_TIERING_FILE_IS_NOT_PINNED workflow.

A/B test for this HRESULT

1. For ERROR_TIERING_FILE_IS_NOT_PINNED, serialize the failing request and the enumeration from which its identifiers came within the ERROR_TIERING_FILE_IS_NOT_PINNED workflow.
2. 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 while every handle is still valid in the ERROR_TIERING_FILE_IS_NOT_PINNED path.
3. Repeat the operation using this controlled change: apply the operation to a regular file on a verified tiered volume, then compare with the original object type and pin state when ERROR_TIERING_FILE_IS_NOT_PINNED is returned.
4. Close and reacquire the relevant objects, then run once more to test lifecycle correctness after ERROR_TIERING_FILE_IS_NOT_PINNED.

Use ERROR_TIERING_CANNOT_PIN_OBJECT as the nearest comparison. ERROR_TIERING_FILE_IS_NOT_PINNED is specific to an unpin or pin-state query targeted a file that has no explicit tier assignment; the neighboring result belongs to another validation or lifecycle branch for ERROR_TIERING_FILE_IS_NOT_PINNED. Keeping both names prevents a generic storage label from hiding the actual owner within the ERROR_TIERING_FILE_IS_NOT_PINNED workflow.

Mechanism-specific note for ERROR_TIERING_FILE_IS_NOT_PINNED

The file can still reside on a tier due to heat-based optimization even though it has no explicit pin when ERROR_TIERING_FILE_IS_NOT_PINNED is returned. Query desired placement separately from current physical placement in the ERROR_TIERING_FILE_IS_NOT_PINNED path. An unpin workflow should treat this state as idempotent rather than moving data or inventing a pin record to remove while diagnosing ERROR_TIERING_FILE_IS_NOT_PINNED.

Corrective action and regression check

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 while diagnosing ERROR_TIERING_FILE_IS_NOT_PINNED. After correcting ERROR_TIERING_FILE_IS_NOT_PINNED, reopen the pack, volume, tier, snapshot or virtual disk so no cached generation participates in the validation run for the ERROR_TIERING_FILE_IS_NOT_PINNED request.

• The original ERROR_TIERING_FILE_IS_NOT_PINNED request now reaches success or a documented later status with the intended layout and access mode when ERROR_TIERING_FILE_IS_NOT_PINNED is returned.
• A new enumeration reports internally consistent IDs, counts, geometry and ownership for the object corrected after ERROR_TIERING_FILE_IS_NOT_PINNED.
• The passing state survives the lifecycle transition relevant to ERROR_TIERING_FILE_IS_NOT_PINNED, such as reopen, remount, owner change or detach/attach in the ERROR_TIERING_FILE_IS_NOT_PINNED path.
• The application still distinguishes ERROR_TIERING_FILE_IS_NOT_PINNED from ERROR_TIERING_CANNOT_PIN_OBJECT and has no unbounded retry loop.

Do not use ERROR_TIERING_FILE_IS_NOT_PINNED as a reason to edit dynamic-disk sectors, VHDX metadata, RCT sidecars or snapshot support files directly for ERROR_TIERING_FILE_IS_NOT_PINNED. Unsupported edits can turn a recoverable state mismatch into persistent corruption for ERROR_TIERING_FILE_IS_NOT_PINNED.

Technical references

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

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