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STATUS_VOLMGR_EXTENT_VOLUME_LENGTHS_DO_NOT_MATCH
STATUS_VOLMGR_EXTENT_VOLUME_LENGTHS_DO_NOT_MATCH means that the extents in the proposed layout cannot produce the declared volume length. This is not merely a capacity failure: the dimensions in the request are internally inconsistent.
For a multi-extent layout, calculate the contribution of each extent according to the requested volume model rather than assuming every raw range can be summed or mirrored in the same way. A mismatch can also indicate a marshaling or unit-conversion error in a management client.
What to compare
- Record the requested volume length and the offset/length of every supplied extent in the same unit.
- Check for sectors-versus-bytes conversion errors and for truncated 32-bit values in older management code.
- Verify that the intended layout type supports the proposed distribution before modifying any disk.
Microsoft: VDS disk extent types
Microsoft: Volume Manager error codes
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