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FILTER_S_DISK_FULL
Indexing warns that disk space is becoming exhausted
FILTER_S_DISK_FULL is HRESULT 268085 (0x00041735) from Indexing Service. The documented description is “The disk is getting full.” The severity bit indicates a nonfailure result, but the value carries a specific condition that must not be collapsed into plain S_OK.
In the legacy Indexing Service or IFilter pipeline, this result means that the disk is getting full. Handling is complete only after the caller verifies what work occurred and what remains outstanding.
Where the status is encountered
- Legacy Indexing Service catalog processing; log the exact method and object state instead of interpreting the constant outside that contract.
- IFilter text and property extraction; log the exact method and object state instead of interpreting the constant outside that contract.
- Search enumeration, scan scheduling, or catalog administration; log the exact method and object state instead of interpreting the constant outside that contract.
What must be true before accepting it
Verify that the service can prevent catalog corruption and retain enough space for checkpoint or rollback operations. Failure to prove the boundary can make it look healthy while the intended operation remains unfinished.
Classify the operation phase reached when this HRESULT was returned before releasing objects or issuing replacement work.
Evidence to preserve
- Preserve volume free bytes and configured threshold.
- Preserve catalog and temporary directory sizes.
- Preserve growth rate.
- Preserve current scan checkpoint.
- Preserve cleanup actions and resumed generation.
Correct handling and recovery
Throttle or pause indexing, measure catalog and temporary-file growth, free or extend storage, then resume from a verified checkpoint.
Practical scenario
During a full scan the catalog volume crosses its safety threshold. The service pauses new ingestion, removes obsolete catalogs, and resumes only after free-space headroom is restored.
References
- Microsoft: Filter interface values — official Microsoft material relevant to this HRESULT.
- Microsoft: About Indexing Service filters
- Microsoft: Using custom filters
- Microsoft: HRESULT values
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