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STATUS_LOG_START_OF_LOG
STATUS_LOG_START_OF_LOG means a CLFS operation attempted to read or write backward beyond the start of the log. The start is an active-log boundary, not merely the earliest byte in a container file; CLFS clients use base and last LSNs to describe the active portion of a stream.
This differs from STATUS_LOG_INVALID_RANGE, which identifies access outside the active range more generally, and from STATUS_LOG_RECORD_NONEXISTENT, which says that a particular LSN is not a record. Moving an offset backward until it appears readable is not a valid recovery strategy.
Restart scans from a known boundary
- Capture the requested LSN and the current base and last LSNs before retrying a backward traversal.
- Determine whether a previous restart-area update or archive-tail advance allowed older containers to be recycled.
- Use an appropriate restart point or restored archive set when older history is required.
References
- Microsoft: CLFS concepts and active LSN range
- Microsoft: CLFS stable storage and LSN layout
- Microsoft Open Specifications: NTSTATUS values
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