If the system fails during a write to the journal, I believe that the whole operation is regarded as failed, and what's known in database circles as a ROLLBACK occurs... That is, since the disk operation (e.g. unlink) couldn't be completed, it's not done at all, and thus not left half-done and messy.
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If the system fails during a write to the journal, I believe that the whole operation is regarded as failed, and what's known in database circles as a ROLLBACK occurs... That is, since the disk operation (e.g. unlink) couldn't be completed, it's not done at all, and thus not left half-done and messy.