{"id":1219,"date":"2026-10-24T03:00:00","date_gmt":"2026-10-23T18:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1219"},"modified":"2026-10-22T20:51:48","modified_gmt":"2026-10-22T11:51:48","slug":"qs-fdatasync-metadata-size-20261022","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1219","title":{"rendered":"fdatasync\u304c\u7701\u3051\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306f\u306a\u305c\u5bfe\u8c61\u304b\u3089\u5916\u305b\u306a\u3044\u304b"},"content":{"rendered":"<p>\u30d5\u30a1\u30a4\u30eb\u306e\u5909\u66f4\u3092\u4fdd\u5b58\u88c5\u7f6e\u3078\u9001\u308b\u3068\u304d\u3001\u5185\u5bb9\u3060\u3051\u9001\u308c\u3070\u8db3\u308a\u308b\u3088\u3046\u306b\u601d\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u5f8c\u304b\u3089\u305d\u306e\u5185\u5bb9\u3092\u6b63\u3057\u304f\u8aad\u3080\u306b\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u9577\u3055\u306a\u3069\u3082\u5fc5\u8981\u3067\u3059\u3002Linux\u306efdatasync\u306f\u3001\u5358\u7d14\u306b\u300c\u30c7\u30fc\u30bf\u3060\u3051\u300d\u3092\u540c\u671f\u3059\u308b\u95a2\u6570\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8aad\u307f\u51fa\u3057\u306b\u5fc5\u8981\u304b\u3069\u3046\u304b\u3067\u3001\u540c\u671f\u3059\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u9078\u3073\u307e\u3059\u3002[1]<\/p>\n<section class=\"influvetor-quick-summary\" aria-label=\"\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f\">\n<p><strong>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f<\/strong><\/p>\n<ul>\n<li>fsync\u306f\u30d5\u30a1\u30a4\u30eb\u306e\u5909\u66f4\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3068\u95a2\u9023\u3059\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u540c\u671f\u3057\u307e\u3059\u3002fdatasync\u306f\u3001\u5f8c\u306e\u30c7\u30fc\u30bf\u53d6\u5f97\u306b\u5fc5\u8981\u306a\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u6b8b\u3057\u3066\u3001\u4e0d\u8981\u306a\u3082\u306e\u306e\u540c\u671f\u3092\u7701\u3051\u307e\u3059\u3002<\/li>\n<li>\u30a2\u30af\u30bb\u30b9\u6642\u523b\u3084\u66f4\u65b0\u6642\u523b\u306f\u3001\u5185\u5bb9\u3092\u8aad\u307f\u51fa\u3059\u305f\u3081\u306b\u306f\u5fc5\u9808\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4e00\u65b9\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u9577\u304f\u3057\u305f\u3068\u304d\u306e\u30b5\u30a4\u30ba\u306f\u3001\u3069\u3053\u307e\u3067\u30c7\u30fc\u30bf\u304c\u3042\u308b\u304b\u3092\u6c7a\u3081\u308b\u305f\u3081\u540c\u671f\u5bfe\u8c61\u3067\u3059\u3002<\/li>\n<li>fdatasync\u3092\u9078\u3093\u3060\u3060\u3051\u3067\u9ad8\u901f\u5316\u3084\u969c\u5bb3\u8010\u6027\u3092\u5b9f\u8a3c\u3057\u305f\u3053\u3068\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u5fc5\u8981\u306a\u6027\u8cea\u3001\u623b\u308a\u5024\u3001\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u3068\u88c5\u7f6e\u306e\u6761\u4ef6\u3092\u5225\u306b\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u30e1\u30bf\u30c7\u30fc\u30bf\u306b\u3082\u3001\u5f79\u5272\u306e\u9055\u3044\u304c\u3042\u308b<\/h2>\n<p>\u30e1\u30bf\u30c7\u30fc\u30bf\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u305d\u306e\u3082\u306e\u3092\u8aac\u660e\u30fb\u7ba1\u7406\u3059\u308b\u60c5\u5831\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3001\u6700\u5f8c\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u6642\u523b\u3001\u6700\u5f8c\u306b\u5185\u5bb9\u3092\u5909\u66f4\u3057\u305f\u6642\u523b\u304c\u3042\u308a\u307e\u3059\u3002\u540c\u3058\u300c\u5185\u5bb9\u4ee5\u5916\u306e\u60c5\u5831\u300d\u3067\u3082\u3001\u8aad\u307f\u624b\u304c\u30d0\u30a4\u30c8\u5217\u3092\u6b63\u3057\u304f\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u3082\u306e\u3068\u3001\u5c65\u6b74\u3084\u7ba1\u7406\u306e\u305f\u3081\u306b\u4f7f\u3046\u3082\u306e\u306f\u540c\u3058\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>Linux man-pages 6.19\u306f\u3001fsync\u304c\u30d5\u30a1\u30a4\u30eb\u306e\u5909\u66f4\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306b\u52a0\u3048\u3066\u3001\u95a2\u9023\u3059\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u3082\u540c\u671f\u3059\u308b\u3068\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u5bfe\u3057\u3066fdatasync\u306f\u3001\u5f8c\u306e\u30c7\u30fc\u30bf\u53d6\u5f97\u3092\u6b63\u3057\u304f\u884c\u3046\u305f\u3081\u306b\u5fc5\u8981\u3067\u306a\u3044\u9650\u308a\u3001\u5909\u66f4\u3055\u308c\u305f\u30e1\u30bf\u30c7\u30fc\u30bf\u306e\u540c\u671f\u3092\u8981\u6c42\u3057\u307e\u305b\u3093\u3002[1\u3001DESCRIPTION] \u5224\u65ad\u306e\u8ef8\u306f\u3001\u60c5\u5831\u306e\u5927\u304d\u3055\u3084\u540d\u524d\u3067\u306f\u306a\u304f\u3001\u8aad\u307f\u51fa\u3057\u3078\u306e\u5f79\u5272\u3067\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u300c\u7701\u3051\u308b\u300d\u306f\u3001\u305d\u306e\u60c5\u5831\u304c\u5fc5\u305a\u66f8\u304d\u51fa\u3055\u308c\u306a\u3044\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5b9f\u969b\u306e\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u8907\u6570\u306e\u60c5\u5831\u304c\u540c\u3058\u4fdd\u5b58\u5358\u4f4d\u306b\u8f09\u308b\u306a\u3069\u3001\u5b9f\u88c5\u4e0a\u307e\u3068\u3081\u3066\u66f8\u304b\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u95a2\u6570\u304c\u6700\u4f4e\u9650\u3069\u306e\u60c5\u5831\u306e\u540c\u671f\u3092\u6c42\u3081\u308b\u304b\u3068\u3001\u5b9f\u88c5\u304c\u5b9f\u969b\u306b\u884c\u3046\u5165\u51fa\u529b\u306f\u5206\u3051\u3066\u8aad\u307f\u307e\u3059\u3002<\/p>\n<h2>\u9577\u3055\u304c\u53e4\u3044\u307e\u307e\u306a\u3089\u3001\u8ffd\u52a0\u3057\u305f\u90e8\u5206\u3092\u8aad\u3081\u306a\u3044<\/h2>\n<p>\u5358\u7d14\u306a\u4f8b\u3068\u3057\u3066\u3001\u9577\u3055\u304c4\u30d0\u30a4\u30c8\u306e\u30d5\u30a1\u30a4\u30eb\u306bABCD\u304c\u5165\u3063\u3066\u3044\u308b\u3068\u3057\u307e\u3059\u3002\u672b\u5c3e\u3078EF\u3092\u8ffd\u52a0\u3059\u308b\u3068\u3001\u5185\u5bb9\u306fABCDEF\u3001\u9577\u3055\u306f6\u306b\u306a\u308a\u307e\u3059\u3002\u5909\u66f4\u5f8c\u306e\u30d0\u30a4\u30c8\u5217\u304c\u4fdd\u5b58\u3055\u308c\u3066\u3082\u3001\u9577\u3055\u3092\u793a\u3059\u60c5\u5831\u3060\u3051\u304c4\u306e\u307e\u307e\u306a\u3089\u3001\u901a\u5e38\u306e\u30d5\u30a1\u30a4\u30eb\u8aad\u53d6\u308a\u3067\u306f\u672b\u5c3e\u306eEF\u307e\u3067\u5230\u9054\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u306e\u4f8b\u306e\u8aad\u307f\u51fa\u3057\u30e2\u30c7\u30eb\u306f\u3001\u4fdd\u5b58\u3055\u308c\u305f\u30d0\u30a4\u30c8\u5217\u306e\u5148\u982d\u304b\u3089\u3001\u4fdd\u5b58\u3055\u308c\u305f\u9577\u3055\u306e\u5206\u3060\u3051\u3092\u8fd4\u3059\u3082\u306e\u3067\u3059\u3002\u5185\u5bb9\u3092ABCDEF\u3078\u5909\u3048\u3001\u9577\u3055\u30924\u306b\u636e\u3048\u7f6e\u304f\u3068ABCD\u304c\u8fd4\u308a\u307e\u3059\u3002\u9577\u3055\u30826\u3078\u66f4\u65b0\u3057\u3066\u521d\u3081\u3066ABCDEF\u304c\u8fd4\u308a\u307e\u3059\u3002\u5b9f\u969b\u306e\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30d6\u30ed\u30c3\u30af\u914d\u7f6e\u3084\u30af\u30e9\u30c3\u30b7\u30e5\u5f8c\u306e\u72b6\u614b\u3092\u518d\u73fe\u3059\u308b\u5b9f\u9a13\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30b5\u30a4\u30ba\u3092\u5185\u5bb9\u304b\u3089\u5207\u308a\u96e2\u305b\u306a\u3044\u7406\u7531\u3092\u793a\u305b\u307e\u3059\u3002<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-fdatasync-metadata-size-20261022-figure-48df48f3113e.png\" alt=\"\u8ffd\u52a0\u5f8c\u306e\u5185\u5bb9ABCDEF\u306b\u5bfe\u3057\u3001\u4fdd\u5b58\u3055\u308c\u305f\u9577\u3055\u304c4\u306a\u3089\u8aad\u307f\u51fa\u305b\u308b\u7bc4\u56f2\u306fABCD\u3001\u9577\u3055\u30826\u306a\u3089ABCDEF\u3068\u306a\u308b\u72ec\u81ea\u30e2\u30c7\u30eb\u3002\u6642\u523b\u60c5\u5831\u306e\u5909\u66f4\u306f\u3001\u3053\u306e\u30e2\u30c7\u30eb\u306e\u8aad\u53d6\u308a\u7bc4\u56f2\u3092\u5909\u3048\u306a\u3044\u3002\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption>\u5185\u5bb9\u3068\u9577\u3055\u3092\u5206\u3051\u305f\u72ec\u81ea\u306e\u8aad\u53d6\u308a\u30e2\u30c7\u30eb\u3002\u5b9f\u6a5f\u306e\u96fb\u6e90\u65ad\u8a66\u9a13\u3084\u3001\u7279\u5b9a\u306e\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u5fa9\u65e7\u7d50\u679c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/figcaption><\/figure>\n<p>\u30de\u30cb\u30e5\u30a2\u30eb\u3082\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30bast_size\u306e\u5909\u66f4\u3092\u3001fdatasync\u3067\u30e1\u30bf\u30c7\u30fc\u30bf\u306e\u540c\u671f\u304c\u5fc5\u8981\u306b\u306a\u308b\u4f8b\u3068\u3057\u3066\u6319\u3052\u3066\u3044\u307e\u3059\u3002[1] \u300c\u30e1\u30bf\u30c7\u30fc\u30bf\u306f\u7701\u7565\u3059\u308b\u95a2\u6570\u300d\u3068\u899a\u3048\u308b\u3068\u3001\u307e\u3055\u306b\u5185\u5bb9\u3092\u6b63\u3057\u304f\u8aad\u3080\u305f\u3081\u306b\u5fc5\u8981\u306a\u60c5\u5831\u307e\u3067\u7701\u304f\u3088\u3046\u306b\u8aa4\u89e3\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<h2>\u540c\u3058\u9577\u3055\u306e\u4e0a\u66f8\u304d\u3068\u3001\u9577\u3055\u306e\u5909\u66f4\u3092\u5206\u3051\u308b<\/h2>\n<p>\u4eca\u5ea6\u306fABCD\u3092WXYZ\u306b\u4e0a\u66f8\u304d\u3057\u3001\u9577\u3055\u306f4\u306e\u307e\u307e\u3068\u3057\u307e\u3059\u3002\u3053\u306e\u30e2\u30c7\u30eb\u3067\u306f\u3001\u65b0\u3057\u3044\u5185\u5bb9\u3068\u9577\u30554\u304c\u305d\u308d\u3048\u3070WXYZ\u3092\u8aad\u307f\u51fa\u305b\u307e\u3059\u3002\u8ffd\u52a0\u306e\u4f8b\u3068\u7570\u306a\u308a\u3001\u30b5\u30a4\u30ba\u306e\u5024\u30924\u304b\u30896\u3078\u5909\u66f4\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u3053\u308c\u3092\u300c\u540c\u3058\u9577\u3055\u306a\u3089\u30e1\u30bf\u30c7\u30fc\u30bf\u306f\u4e00\u5207\u4e0d\u8981\u300d\u3068\u4e00\u822c\u5316\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u5185\u5bb9\u3078\u5230\u9054\u3059\u308b\u305f\u3081\u306e\u7ba1\u7406\u60c5\u5831\u304c\u66f4\u65b0\u3055\u308c\u308b\u304b\u3069\u3046\u304b\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u6210\u306b\u3082\u95a2\u4fc2\u3057\u307e\u3059\u3002fdatasync\u306e\u6761\u4ef6\u306f\u3001\u7279\u5b9a\u306e\u4e00\u9805\u76ee\u3060\u3051\u3092\u56fa\u5b9a\u30ea\u30b9\u30c8\u304b\u3089\u9664\u304f\u3053\u3068\u3067\u306f\u306a\u304f\u3001\u6b63\u3057\u3044\u30c7\u30fc\u30bf\u53d6\u5f97\u306b\u5fc5\u8981\u306a\u60c5\u5831\u3092\u540c\u671f\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u9055\u3044\u306f\u3001\u30ed\u30b0\u3078\u306e\u8ffd\u8a18\u3068\u3001\u65e2\u5b58\u306e\u56fa\u5b9a\u9577\u9818\u57df\u3078\u306e\u4e0a\u66f8\u304d\u3092\u6bd4\u8f03\u3059\u308b\u3068\u304d\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u3069\u3061\u3089\u3082write\u3092\u547c\u3076\u51e6\u7406\u3067\u3082\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u9577\u3055\u304c\u5909\u308f\u308b\u304b\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u6bd4\u8f03\u306e\u524d\u63d0\u306b\u64cd\u4f5c\u306e\u7a2e\u985e\u3092\u6b8b\u305b\u3070\u3001\u300c\u540c\u3058\u30c7\u30fc\u30bf\u91cf\u306a\u306e\u306b\u540c\u671f\u306e\u8ca0\u62c5\u304c\u9055\u3046\u300d\u5834\u5408\u306b\u3082\u3001\u4f55\u304c\u5909\u308f\u3063\u305f\u306e\u304b\u3092\u8abf\u3079\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u672c\u7a3f\u306f\u4e21\u65b9\u5f0f\u306e\u901f\u5ea6\u5dee\u3092\u6e2c\u5b9a\u3057\u305f\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h2>\u6642\u523b\u304c\u91cd\u8981\u306a\u7528\u9014\u3067\u306f\u3001\u5224\u65ad\u304c\u5909\u308f\u308b<\/h2>\n<p>\u30de\u30cb\u30e5\u30a2\u30eb\u306f\u3001\u6700\u7d42\u30a2\u30af\u30bb\u30b9\u6642\u523bst_atime\u3068\u6700\u7d42\u66f4\u65b0\u6642\u523bst_mtime\u306b\u3064\u3044\u3066\u3001\u5f8c\u306e\u30c7\u30fc\u30bf\u8aad\u53d6\u308a\u3092\u6b63\u3057\u304f\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u306f\u5fc5\u9808\u3067\u306a\u3044\u305f\u3081\u3001fdatasync\u3067\u306e\u540c\u671f\u306f\u5fc5\u8981\u306a\u3044\u3068\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002[1] \u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u53d6\u5f97\u3067\u304d\u308b\u3053\u3068\u306b\u6ce8\u76ee\u3059\u308c\u3070\u3001\u66f4\u65b0\u6642\u523b\u304c\u4ee5\u524d\u306e\u5024\u3067\u3082\u3001\u8aad\u307f\u51fa\u3059\u30d0\u30a4\u30c8\u5217\u305d\u306e\u3082\u306e\u306f\u5225\u306b\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u66f4\u65b0\u6642\u523b\u3092\u4f7f\u3063\u3066\u518d\u51e6\u7406\u306e\u8981\u5426\u3084\u8868\u793a\u9806\u3092\u6c7a\u3081\u308b\u306a\u3089\u3001\u6642\u523b\u306f\u305d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3068\u3063\u3066\u91cd\u8981\u3067\u3059\u3002\u300c\u5185\u5bb9\u3092\u8aad\u307f\u51fa\u305b\u308b\u305f\u3081\u306b\u306f\u5fc5\u9808\u3067\u306f\u306a\u3044\u300d\u3068\u300c\u81ea\u5206\u306e\u7528\u9014\u3067\u306f\u5931\u3063\u3066\u3088\u3044\u300d\u306f\u540c\u3058\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4fdd\u5b58\u3057\u305f\u3044\u6027\u8cea\u306b\u6642\u523b\u306a\u3069\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u3082\u542b\u307e\u308c\u308b\u306a\u3089\u3001fdatasync\u3060\u3051\u3092\u9078\u3076\u7406\u7531\u3092\u898b\u76f4\u3057\u307e\u3059\u3002<\/p>\n<p>fsync\u3068fdatasync\u3092\u6bd4\u3079\u308b\u969b\u306f\u3001\u307e\u305a\u3001\u5f8c\u304b\u3089\u5fc5\u8981\u306b\u306a\u308b\u60c5\u5831\u3092\u5217\u6319\u3057\u307e\u3059\u3002\u5185\u5bb9\u3068\u9577\u3055\u3067\u8db3\u308a\u308b\u306e\u304b\u3001\u95a2\u9023\u3059\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u3082\u542b\u3081\u3066\u540c\u671f\u3057\u305f\u3044\u306e\u304b\u3002\u305d\u306e\u3046\u3048\u3067\u3001\u4f7f\u3046\u74b0\u5883\u304c\u63d0\u4f9b\u3059\u308b\u52d5\u4f5c\u3068\u7167\u5408\u3057\u307e\u3059\u3002\u95a2\u6570\u540d\u3060\u3051\u3067\u4e00\u65b9\u3092\u5e38\u306b\u512a\u308c\u305f\u9078\u629e\u80a2\u3068\u6c7a\u3081\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<h2>\u540c\u671f\u3057\u305f\u7bc4\u56f2\u3068\u3001\u6b8b\u308b\u6761\u4ef6\u3092\u8a18\u9332\u3059\u308b<\/h2>\n<p>fsync\u3068fdatasync\u306f\u6210\u529f\u6642\u306b0\u3001\u30a8\u30e9\u30fc\u6642\u306b\u22121\u3092\u8fd4\u3057\u3001errno\u3067\u7406\u7531\u3092\u77e5\u3089\u305b\u307e\u3059\u3002[1\u3001RETURN VALUE\u30fbERRORS] \u5185\u5bb9\u3092\u66f8\u3051\u305f\u3053\u3068\u3068\u3001\u5fc5\u8981\u306a\u540c\u671f\u304c\u6210\u529f\u3057\u305f\u3053\u3068\u3092\u5225\u3005\u306b\u8a18\u9332\u3059\u308b\u3068\u3001\u4fdd\u5b58\u5b8c\u4e86\u306e\u5224\u65ad\u3092\u8ffd\u3044\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u5bb9\u91cf\u4e0d\u8db3\u3084\u5165\u51fa\u529b\u306e\u554f\u984c\u306a\u3069\u3001\u540c\u671f\u306e\u6bb5\u968e\u3067\u8868\u9762\u5316\u3059\u308b\u30a8\u30e9\u30fc\u3092\u6210\u529f\u3068\u3057\u3066\u6271\u308f\u306a\u3044\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u540c\u671f\u306f\u3001\u305d\u306e\u540d\u524d\u3092\u542b\u3080\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u9805\u76ee\u306e\u540c\u671f\u307e\u3067\u4e00\u62ec\u3057\u3066\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002[1] \u540d\u524d\u306e\u7f6e\u63db\u3068\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u4fdd\u5b58\u306f\u3001\u5225\u306e\u5bfe\u8c61\u3068\u3057\u3066\u78ba\u8a8d\u304c\u5fc5\u8981\u3067\u3059\u3002\u672c\u7a3f\u306e\u6bd4\u8f03\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u6b63\u3057\u304f\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u3069\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u304c\u5fc5\u8981\u304b\u3001\u3068\u3044\u3046\u7bc4\u56f2\u3067\u3059\u3002<\/p>\n<p>fdatasync\u306e\u76ee\u7684\u306f\u3001\u3059\u3079\u3066\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u306e\u540c\u671f\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u7528\u9014\u3067\u3001\u30c7\u30a3\u30b9\u30af\u6d3b\u52d5\u3092\u6e1b\u3089\u305b\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u524a\u6e1b\u3067\u304d\u308b\u66f8\u8fbc\u307f\u3084\u5f85\u3061\u6642\u9593\u306f\u5b9f\u88c5\u3068\u64cd\u4f5c\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u88c5\u7f6e\u304c\u8fd4\u3059\u5b8c\u4e86\u306e\u610f\u5473\u3084\u3001\u4f7f\u3046\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u6761\u4ef6\u3082\u542b\u3081\u3066\u3001\u5fc5\u8981\u306a\u8a66\u9a13\u3092\u5225\u306b\u884c\u3044\u307e\u3059\u3002\u77ed\u3044\u72ec\u81ea\u30e2\u30c7\u30eb\u306e\u7d50\u679c\u3092\u3001\u5b9f\u88c5\u306e\u6027\u80fd\u3084\u96fb\u6e90\u65ad\u5f8c\u306e\u5fa9\u65e7\u4fdd\u8a3c\u3078\u5e83\u3052\u306a\u3044\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ul>\n<li>[1] <a href=\"https:\/\/man7.org\/linux\/man-pages\/man2\/fsync.2.html\">Linux man-pages 6.19 \u2014 fsync(2), fdatasync(2)<\/a>\uff08\u672c\u6587\u65e5\u4ed82026\u5e742\u67088\u65e5\u30012026\u5e7410\u670822\u65e5\u4fdd\u5b58\uff09\u3002DESCRIPTION\u3001RETURN VALUE\u3001ERRORS\u3092\u53c2\u7167\u3002ABCDEF\u30fbWXYZ\u3068\u9577\u3055\u306e\u6bd4\u8f03\u306f\u72ec\u81ea\u30e2\u30c7\u30eb\u3067\u3059\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u30d5\u30a1\u30a4\u30eb\u306e\u5909\u66f4\u3092\u4fdd\u5b58\u88c5\u7f6e\u3078\u9001\u308b\u3068\u304d\u3001\u5185\u5bb9\u3060\u3051\u9001\u308c\u3070\u8db3\u308a\u308b\u3088\u3046\u306b\u601d\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u5f8c\u304b\u3089\u305d\u306e\u5185\u5bb9\u3092\u6b63\u3057\u304f\u8aad\u3080\u306b\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u9577\u3055\u306a\u3069\u3082\u5fc5\u8981\u3067\u3059\u3002Linux\u306efdatasync\u306f\u3001\u5358\u7d14\u306b\u300c\u30c7\u30fc\u30bf\u3060\u3051\u300d\u3092\u540c\u671f\u3059\u308b\u95a2 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1217,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":false,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[30],"tags":[244],"class_list":["post-1219","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-computing","tag-linux"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-fdatasync-metadata-size-20261022-featured-8e923784bbbf.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1219","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1219"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1219\/revisions"}],"predecessor-version":[{"id":1220,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1219\/revisions\/1220"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/1217"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}