{"id":"rename-without-dir-barrier","text":"Both Bitcask compaction paths (`hash-index-storage/bitcask.py:297`, `log-structured-merge-tree/bitcask.py:301`) perform `os.rename()` without a subsequent directory fsync, making the rename non-durable on ext4 and XFS","truth_value":"IN","source":"entries/2026/05/28/topic-directory-fsync-semantics.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"rename-without-dir-barrier","truth_value":"IN","reason":"premise"}]}}