NTSTATUS 0xC01A0009 (STATUS_LOG_BLOCK

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Description:

the version in a CLFS log I/O block is not supported or valid.

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STATUS_LOG_RESTART_INVALID	STATUS_LOG_BLOCK_INVALID

STATUS_LOG_BLOCK_VERSION

STATUS_LOG_BLOCK_VERSION indicates that CLFS cannot accept the version associated with a log I/O block. Before the records inside a block can be scanned, CLFS must be able to interpret the block as part of the physical log format.

This status is more specific than STATUS_LOG_BLOCK_INVALID. A block can be invalid for many structural reasons; a block-version result isolates the format-version check. It is also distinct from STATUS_LOG_SECTOR_PARITY_INVALID, which points to sector integrity rather than format interpretation.

Avoid format-guessing repairs

Record the Windows build, CLFS client, log origin, and any migration or restore path that produced the log set.
Keep the base log and containers together when comparing against a known-good copy or supported restore source.
Do not alter version bytes to force a read; that can turn an identifiable compatibility issue into an unrecoverable integrity problem.

References

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