{"id":"btree-wal-no-data-fsync","text":"`PageManager.write_page` calls `flush()` but never `os.fsync()`, so written pages may not be durable on crash even after the WAL has committed.","truth_value":"IN","source":"entries/2026/05/28/b-tree-storage-engine-fix-plan.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"btree-wal-no-data-fsync","truth_value":"IN","reason":"premise"}]}}