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STATUS_VOLMGR_STRUCTURE_SIZE_INVALID
The VM_VOLUME_LAYOUT buffer fails its size-field contract
STATUS_VOLMGR_STRUCTURE_SIZE_INVALID names the exact input contract that failed: one or more Size fields in VM_VOLUME_LAYOUT are incorrectly set. This is primarily a caller-data problem, not a disk-health status.
Size fields in variable or versioned structures let the receiver validate how much data is present before following nested layout records. Incorrect values can result from wrong structure packing, a version mismatch, truncated serialization, or code that initialized the outer structure but not embedded records.
Capture the raw input buffer and the binary version that built it. Compare every declared size with the actual allocated region before retrying; changing disk topology cannot fix a malformed structure and may make a reproducible software defect harder to isolate.
What to inspect
- Log each VM_VOLUME_LAYOUT size field and the total byte length delivered to the Volume Manager call.
- Check compiler packing, architecture, and interface version when the producer and consumer are different binaries.
- Initialize the complete structure and nested arrays explicitly so stale heap data cannot populate size fields.
References
- Microsoft VOLMGR text for STATUS_VOLMGR_STRUCTURE_SIZE_INVALID.
- MS-DMRP parameter-validation and interface-version behavior.
- MS-DMRP return-code reference for disk-management clients.
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