{"id":426,"date":"2015-04-27T18:21:49","date_gmt":"2015-04-27T18:21:49","guid":{"rendered":"6ecbdd6ec859d284dc13885a37ce8d81"},"modified":"2015-04-27T18:21:49","modified_gmt":"2015-04-27T18:21:49","slug":"","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/426","title":{"rendered":"\u5206\u5e03\u5f0f\u6587\u4ef6\u7cfb\u7edfFastDFS\u8bbe\u8ba1\u539f\u7406"},"content":{"rendered":"

FastDFS<\/a>\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u8f7b\u91cf\u7ea7\u5206\u5e03\u5f0f\u6587\u4ef6\u7cfb\u7edf\uff0c\u7531\u8ddf\u8e2a\u670d\u52a1\u5668\uff08tracker server\uff09\u3001\u5b58\u50a8\u670d\u52a1\u5668\uff08storage server\uff09\u548c\u5ba2\u6237\u7aef\uff08client\uff09\u4e09\u4e2a\u90e8\u5206\u7ec4\u6210\uff0c\u4e3b\u8981\u89e3\u51b3\u4e86\u6d77\u91cf\u6570\u636e\u5b58\u50a8\u95ee\u9898\uff0c\u7279\u522b\u9002\u5408\u4ee5\u4e2d\u5c0f\u6587\u4ef6\uff08\u5efa\u8bae\u8303\u56f4\uff1a4KB < file_size <500MB\uff09\u4e3a\u8f7d\u4f53\u7684\u5728\u7ebf\u670d\u52a1\u3002<\/p>\n

\"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\"<\/a><\/p>\n

\n

Storage server<\/strong><\/p>\n

Storage server\uff08\u540e\u7b80\u79f0storage\uff09\u4ee5\u7ec4\uff08\u5377\uff0cgroup\u6216volume\uff09\u4e3a\u5355\u4f4d\u7ec4\u7ec7\uff0c\u4e00\u4e2agroup\u5185\u5305\u542b\u591a\u53f0storage\u673a\u5668\uff0c\u6570\u636e\u4e92\u4e3a\u5907\u4efd\uff0c\u5b58\u50a8\u7a7a\u95f4\u4ee5group\u5185\u5bb9\u91cf\u6700\u5c0f\u7684storage\u4e3a\u51c6\uff0c\u6240\u4ee5\u5efa\u8baegroup\u5185\u7684\u591a\u4e2astorage\u5c3d\u91cf\u914d\u7f6e\u76f8\u540c\uff0c\u4ee5\u514d\u9020\u6210\u5b58\u50a8\u7a7a\u95f4\u7684\u6d6a\u8d39\u3002<\/p>\n

\u4ee5group\u4e3a\u5355\u4f4d\u7ec4\u7ec7\u5b58\u50a8\u80fd\u65b9\u4fbf\u7684\u8fdb\u884c\u5e94\u7528\u9694\u79bb\u3001\u8d1f\u8f7d\u5747\u8861\u3001\u526f\u672c\u6570\u5b9a\u5236\uff08group\u5185storage server\u6570\u91cf\u5373\u4e3a\u8be5group\u7684\u526f\u672c\u6570\uff09\uff0c\u6bd4\u5982\u5c06\u4e0d\u540c\u5e94\u7528\u6570\u636e\u5b58\u5230\u4e0d\u540c\u7684group\u5c31\u80fd\u9694\u79bb\u5e94\u7528\u6570\u636e\uff0c\u540c\u65f6\u8fd8\u53ef\u6839\u636e\u5e94\u7528\u7684\u8bbf\u95ee\u7279\u6027\u6765\u5c06\u5e94\u7528\u5206\u914d\u5230\u4e0d\u540c\u7684group\u6765\u505a\u8d1f\u8f7d\u5747\u8861\uff1b\u7f3a\u70b9\u662fgroup\u7684\u5bb9\u91cf\u53d7\u5355\u673a\u5b58\u50a8\u5bb9\u91cf\u7684\u9650\u5236\uff0c\u540c\u65f6\u5f53group\u5185\u6709\u673a\u5668\u574f\u6389\u65f6\uff0c\u6570\u636e\u6062\u590d\u53ea\u80fd\u4f9d\u8d56group\u5185\u5730\u5176\u4ed6\u673a\u5668\uff0c\u4f7f\u5f97\u6062\u590d\u65f6\u95f4\u4f1a\u5f88\u957f\u3002<\/p>\n

group\u5185\u6bcf\u4e2astorage\u7684\u5b58\u50a8\u4f9d\u8d56\u4e8e\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\uff0cstorage\u53ef\u914d\u7f6e\u591a\u4e2a\u6570\u636e\u5b58\u50a8\u76ee\u5f55\uff0c\u6bd4\u5982\u670910\u5757\u78c1\u76d8\uff0c\u5206\u522b\u6302\u8f7d\u5728\/data\/disk1-\/data\/disk10\uff0c\u5219\u53ef\u5c06\u8fd910\u4e2a\u76ee\u5f55\u90fd\u914d\u7f6e\u4e3astorage\u7684\u6570\u636e\u5b58\u50a8\u76ee\u5f55\u3002<\/p>\n

storage\u63a5\u53d7\u5230\u5199\u6587\u4ef6\u8bf7\u6c42\u65f6\uff0c\u4f1a\u6839\u636e\u914d\u7f6e\u597d\u7684\u89c4\u5219\uff08\u540e\u9762\u4f1a\u4ecb\u7ecd\uff09\uff0c\u9009\u62e9\u5176\u4e2d\u4e00\u4e2a\u5b58\u50a8\u76ee\u5f55\u6765\u5b58\u50a8\u6587\u4ef6\u3002\u4e3a\u4e86\u907f\u514d\u5355\u4e2a\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u6570\u592a\u591a\uff0c\u5728storage\u7b2c\u4e00\u6b21\u542f\u52a8\u65f6\uff0c\u4f1a\u5728\u6bcf\u4e2a\u6570\u636e\u5b58\u50a8\u76ee\u5f55\u91cc\u521b\u5efa2\u7ea7\u5b50\u76ee\u5f55\uff0c\u6bcf\u7ea7256\u4e2a\uff0c\u603b\u517165536\u4e2a\u6587\u4ef6\uff0c\u65b0\u5199\u7684\u6587\u4ef6\u4f1a\u4ee5hash\u7684\u65b9\u5f0f\u88ab\u8def\u7531\u5230\u5176\u4e2d\u67d0\u4e2a\u5b50\u76ee\u5f55\u4e0b\uff0c\u7136\u540e\u5c06\u6587\u4ef6\u6570\u636e\u76f4\u63a5\u4f5c\u4e3a\u4e00\u4e2a\u672c\u5730\u6587\u4ef6\u5b58\u50a8\u5230\u8be5\u76ee\u5f55\u4e2d\u3002<\/p>\n

Tracker server<\/strong><\/p>\n

Tracker\u662fFastDFS\u7684\u534f\u8c03\u8005\uff0c\u8d1f\u8d23\u7ba1\u7406\u6240\u6709\u7684storage server\u548cgroup\uff0c\u6bcf\u4e2astorage\u5728\u542f\u52a8\u540e\u4f1a\u8fde\u63a5Tracker\uff0c\u544a\u77e5\u81ea\u5df1\u6240\u5c5e\u7684group\u7b49\u4fe1\u606f\uff0c\u5e76\u4fdd\u6301\u5468\u671f\u6027\u7684\u5fc3\u8df3\uff0ctracker\u6839\u636estorage\u7684\u5fc3\u8df3\u4fe1\u606f\uff0c\u5efa\u7acbgroup==>[storage server list]\u7684\u6620\u5c04\u8868\u3002<\/p>\n

Tracker\u9700\u8981\u7ba1\u7406\u7684\u5143\u4fe1\u606f\u5f88\u5c11\uff0c\u4f1a\u5168\u90e8\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\uff1b\u53e6\u5916tracker\u4e0a\u7684\u5143\u4fe1\u606f\u90fd\u662f\u7531storage\u6c47\u62a5\u7684\u4fe1\u606f\u751f\u6210\u7684\uff0c\u672c\u8eab\u4e0d\u9700\u8981\u6301\u4e45\u5316\u4efb\u4f55\u6570\u636e\uff0c\u8fd9\u6837\u4f7f\u5f97tracker\u975e\u5e38\u5bb9\u6613\u6269\u5c55\uff0c\u76f4\u63a5\u589e\u52a0tracker\u673a\u5668\u5373\u53ef\u6269\u5c55\u4e3atracker cluster\u6765\u670d\u52a1\uff0ccluster\u91cc\u6bcf\u4e2atracker\u4e4b\u95f4\u662f\u5b8c\u5168\u5bf9\u7b49\u7684\uff0c\u6240\u6709\u7684tracker\u90fd\u63a5\u53d7stroage\u7684\u5fc3\u8df3\u4fe1\u606f\uff0c\u751f\u6210\u5143\u6570\u636e\u4fe1\u606f\u6765\u63d0\u4f9b\u8bfb\u5199\u670d\u52a1\u3002<\/p>\n

Upload file<\/strong><\/p>\n

FastDFS\u5411\u4f7f\u7528\u8005\u63d0\u4f9b\u57fa\u672c\u6587\u4ef6\u8bbf\u95ee\u63a5\u53e3\uff0c\u6bd4\u5982upload\u3001download\u3001append\u3001delete\u7b49\uff0c\u4ee5\u5ba2\u6237\u7aef\u5e93\u7684\u65b9\u5f0f\u63d0\u4f9b\u7ed9\u7528\u6237\u4f7f\u7528\u3002<\/p>\n

\"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\"<\/a><\/p>\n

\u9009\u62e9tracker server<\/p>\n

\u5f53\u96c6\u7fa4\u4e2d\u4e0d\u6b62\u4e00\u4e2a<\/span>tracker server<\/span>\u65f6\uff0c\u7531\u4e8e<\/span>tracker<\/span>\u4e4b\u95f4\u662f\u5b8c\u5168\u5bf9\u7b49\u7684\u5173\u7cfb\uff0c\u5ba2\u6237\u7aef\u5728<\/span>upload<\/span>\u6587\u4ef6\u65f6\u53ef\u4ee5\u4efb\u610f\u9009\u62e9\u4e00\u4e2a<\/span>trakcer<\/span>\u3002<\/span><\/pre>\n
\u9009\u62e9\u5b58\u50a8\u7684group<\/p>\n
\u5f53<\/span>tracker<\/span>\u63a5\u6536\u5230<\/span>upload file<\/span>\u7684\u8bf7\u6c42\u65f6\uff0c\u4f1a\u4e3a\u8be5\u6587\u4ef6\u5206\u914d\u4e00\u4e2a\u53ef\u4ee5\u5b58\u50a8\u8be5\u6587\u4ef6\u7684<\/span>group<\/span>\uff0c\u652f\u6301\u5982\u4e0b\u9009\u62e9<\/span>group<\/span>\u7684\u89c4\u5219\uff1a<\/span> <\/span>1.<\/span> <\/span>Round<\/span> robin<\/span>\uff0c\u6240\u6709\u7684<\/span>group<\/span>\u95f4\u8f6e\u8be2<\/span> <\/span>2.<\/span> <\/span>Specified<\/span> <\/span>group<\/span>\uff0c\u6307\u5b9a\u67d0\u4e00\u4e2a\u786e\u5b9a\u7684<\/span>group<\/span> <\/span>3.<\/span> <\/span>Load<\/span> balance<\/span>\uff0c\u5269\u4f59\u5b58\u50a8\u7a7a\u95f4\u591a\u591a<\/span>group<\/span>\u4f18\u5148<\/span><\/pre>\n
\u9009\u62e9storage server<\/p>\n
\u5f53\u9009\u5b9a<\/span>group<\/span>\u540e\uff0c<\/span>tracker<\/span>\u4f1a\u5728<\/span>group<\/span>\u5185\u9009\u62e9\u4e00\u4e2a<\/span>storage server<\/span>\u7ed9\u5ba2\u6237\u7aef\uff0c\u652f\u6301\u5982\u4e0b\u9009\u62e9<\/span>storage<\/span>\u7684\u89c4\u5219\uff1a<\/span> <\/span>1.<\/span> <\/span>Round<\/span> robin<\/span>\uff0c\u5728<\/span>group<\/span>\u5185\u7684\u6240\u6709<\/span>storage<\/span>\u95f4\u8f6e\u8be2<\/span> <\/span>2.<\/span> <\/span>First<\/span> server ordered <\/span>by<\/span> ip<\/span>\uff0c\u6309<\/span>ip<\/span>\u6392\u5e8f<\/span> <\/span>3.<\/span> <\/span>First<\/span> server ordered <\/span>by<\/span> priority<\/span>\uff0c\u6309\u4f18\u5148\u7ea7\u6392\u5e8f\uff08\u4f18\u5148\u7ea7\u5728<\/span>storage<\/span>\u4e0a\u914d\u7f6e\uff09<\/span><\/pre>\n
\u9009\u62e9storage path<\/p>\n
\u5f53\u5206\u914d\u597d<\/span>storage server<\/span>\u540e\uff0c\u5ba2\u6237\u7aef\u5c06\u5411<\/span>storage<\/span>\u53d1\u9001\u5199\u6587\u4ef6\u8bf7\u6c42\uff0c<\/span>storage<\/span>\u5c06\u4f1a\u4e3a\u6587\u4ef6\u5206\u914d\u4e00\u4e2a\u6570\u636e\u5b58\u50a8\u76ee\u5f55\uff0c\u652f\u6301\u5982\u4e0b\u89c4\u5219\uff1a<\/span> <\/span>1.<\/span> <\/span>Round<\/span> robin<\/span>\uff0c\u591a\u4e2a\u5b58\u50a8\u76ee\u5f55\u95f4\u8f6e\u8be2<\/span> <\/span>2.<\/span> <\/span>\u5269\u4f59\u5b58\u50a8\u7a7a\u95f4\u6700\u591a\u7684\u4f18\u5148<\/span><\/pre>\n
\u751f\u6210Fileid<\/p>\n
\u9009\u5b9a\u5b58\u50a8\u76ee\u5f55\u4e4b\u540e\uff0c<\/span>storage<\/span>\u4f1a\u4e3a\u6587\u4ef6\u751f\u4e00\u4e2a<\/span>Fileid<\/span>\uff0c\u7531<\/span>storage server ip<\/span>\u3001\u6587\u4ef6\u521b\u5efa\u65f6\u95f4\u3001\u6587\u4ef6\u5927\u5c0f\u3001\u6587\u4ef6<\/span>crc32<\/span>\u548c\u4e00\u4e2a\u968f\u673a\u6570\u62fc\u63a5\u800c\u6210\uff0c\u7136\u540e\u5c06\u8fd9\u4e2a\u4e8c\u8fdb\u5236\u4e32\u8fdb\u884c<\/span>base64<\/span>\u7f16\u7801\uff0c\u8f6c\u6362\u4e3a\u53ef\u6253\u5370\u7684\u5b57\u7b26\u4e32\u3002<\/span><\/pre>\n
\u9009\u62e9\u4e24\u7ea7\u76ee\u5f55<\/p>\n
\u5f53\u9009\u5b9a\u5b58\u50a8\u76ee\u5f55\u4e4b\u540e\uff0c<\/span>storage<\/span>\u4f1a\u4e3a\u6587\u4ef6\u5206\u914d\u4e00\u4e2a<\/span>fileid<\/span>\uff0c\u6bcf\u4e2a\u5b58\u50a8\u76ee\u5f55\u4e0b\u6709\u4e24\u7ea7<\/span>256<\/span>*<\/span>256<\/span>\u7684\u5b50\u76ee\u5f55\uff0c<\/span>storage<\/span>\u4f1a\u6309\u6587\u4ef6<\/span>fileid<\/span>\u8fdb\u884c\u4e24\u6b21<\/span>hash<\/span>\uff08\u731c\u6d4b\uff09\uff0c\u8def\u7531\u5230\u5176\u4e2d\u4e00\u4e2a\u5b50\u76ee\u5f55\uff0c\u7136\u540e\u5c06\u6587\u4ef6\u4ee5<\/span>fileid<\/span>\u4e3a\u6587\u4ef6\u540d\u5b58\u50a8\u5230\u8be5\u5b50\u76ee\u5f55\u4e0b\u3002<\/span><\/pre>\n
\u751f\u6210\u6587\u4ef6\u540d<\/p>\n
\u5f53\u6587\u4ef6\u5b58\u50a8\u5230\u67d0\u4e2a\u5b50\u76ee\u5f55\u540e\uff0c\u5373\u8ba4\u4e3a\u8be5\u6587\u4ef6\u5b58\u50a8\u6210\u529f\uff0c\u63a5\u4e0b\u6765\u4f1a\u4e3a\u8be5\u6587\u4ef6\u751f\u6210\u4e00\u4e2a\u6587\u4ef6\u540d\uff0c\u6587\u4ef6\u540d\u7531<\/span>group<\/span>\u3001\u5b58\u50a8\u76ee\u5f55\u3001\u4e24\u7ea7\u5b50\u76ee\u5f55\u3001<\/span>fileid<\/span>\u3001\u6587\u4ef6\u540e\u7f00\u540d\uff08\u7531\u5ba2\u6237\u7aef\u6307\u5b9a\uff0c\u4e3b\u8981\u7528\u4e8e\u533a\u5206\u6587\u4ef6\u7c7b\u578b\uff09\u62fc\u63a5\u800c\u6210\u3002<\/span><\/pre>\n
\"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\"<\/a><\/p>\n
\u6587\u4ef6\u540c\u6b65<\/strong><\/p>\n
\u5199\u6587\u4ef6\u65f6\uff0c\u5ba2\u6237\u7aef\u5c06\u6587\u4ef6\u5199\u81f3group\u5185\u4e00\u4e2astorage server\u5373\u8ba4\u4e3a\u5199\u6587\u4ef6\u6210\u529f\uff0cstorage server\u5199\u5b8c\u6587\u4ef6\u540e\uff0c\u4f1a\u7531\u540e\u53f0\u7ebf\u7a0b\u5c06\u6587\u4ef6\u540c\u6b65\u81f3\u540cgroup\u5185\u5176\u4ed6\u7684storage server\u3002<\/p>\n
\u6bcf\u4e2astorage\u5199\u6587\u4ef6\u540e\uff0c\u540c\u65f6\u4f1a\u5199\u4e00\u4efdbinlog\uff0cbinlog\u91cc\u4e0d\u5305\u542b\u6587\u4ef6\u6570\u636e\uff0c\u53ea\u5305\u542b\u6587\u4ef6\u540d\u7b49\u5143\u4fe1\u606f\uff0c\u8fd9\u4efdbinlog\u7528\u4e8e\u540e\u53f0\u540c\u6b65\uff0cstorage\u4f1a\u8bb0\u5f55\u5411group\u5185\u5176\u4ed6storage\u540c\u6b65\u7684\u8fdb\u5ea6\uff0c\u4ee5\u4fbf\u91cd\u542f\u540e\u80fd\u63a5\u4e0a\u6b21\u7684\u8fdb\u5ea6\u7ee7\u7eed\u540c\u6b65\uff1b\u8fdb\u5ea6\u4ee5\u65f6\u95f4\u6233\u7684\u65b9\u5f0f\u8fdb\u884c\u8bb0\u5f55\uff0c\u6240\u4ee5\u6700\u597d\u80fd\u4fdd\u8bc1\u96c6\u7fa4\u5185\u6240\u6709server\u7684\u65f6\u949f\u4fdd\u6301\u540c\u6b65\u3002<\/p>\n
storage\u7684\u540c\u6b65\u8fdb\u5ea6\u4f1a\u4f5c\u4e3a\u5143\u6570\u636e\u7684\u4e00\u90e8\u5206\u6c47\u62a5\u5230tracker\u4e0a\uff0ctracke\u5728\u9009\u62e9\u8bfbstorage\u7684\u65f6\u5019\u4f1a\u4ee5\u540c\u6b65\u8fdb\u5ea6\u4f5c\u4e3a\u53c2\u8003\u3002<\/p>\n
\u6bd4\u5982\u4e00\u4e2agroup\u5185\u6709A\u3001B\u3001C\u4e09\u4e2astorage server\uff0cA\u5411C\u540c\u6b65\u5230\u8fdb\u5ea6\u4e3aT1 (T1\u4ee5\u524d\u5199\u7684\u6587\u4ef6\u90fd\u5df2\u7ecf\u540c\u6b65\u5230B\u4e0a\u4e86\uff09\uff0cB\u5411C\u540c\u6b65\u5230\u65f6\u95f4\u6233\u4e3aT2\uff08T2 > T1)\uff0ctracker\u63a5\u6536\u5230\u8fd9\u4e9b\u540c\u6b65\u8fdb\u5ea6\u4fe1\u606f\u65f6\uff0c\u5c31\u4f1a\u8fdb\u884c\u6574\u7406\uff0c\u5c06\u6700\u5c0f\u7684\u90a3\u4e2a\u505a\u4e3aC\u7684\u540c\u6b65\u65f6\u95f4\u6233\uff0c\u672c\u4f8b\u4e2dT1\u5373\u4e3aC\u7684\u540c\u6b65\u65f6\u95f4\u6233\u4e3aT1\uff08\u5373\u6240\u6709T1\u4ee5\u524d\u5199\u7684\u6570\u636e\u90fd\u5df2\u7ecf\u540c\u6b65\u5230C\u4e0a\u4e86\uff09\uff1b\u540c\u7406\uff0c\u6839\u636e\u4e0a\u8ff0\u89c4\u5219\uff0ctracker\u4f1a\u4e3aA\u3001B\u751f\u6210\u4e00\u4e2a\u540c\u6b65\u65f6\u95f4\u6233\u3002<\/p>\n
Download file<\/strong><\/p>\n
\u5ba2\u6237\u7aefupload file\u6210\u529f\u540e\uff0c\u4f1a\u62ff\u5230\u4e00\u4e2astorage\u751f\u6210\u7684\u6587\u4ef6\u540d\uff0c\u63a5\u4e0b\u6765\u5ba2\u6237\u7aef\u6839\u636e\u8fd9\u4e2a\u6587\u4ef6\u540d\u5373\u53ef\u8bbf\u95ee\u5230\u8be5\u6587\u4ef6\u3002<\/p>\n
\"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\"<\/a><\/p>\n
\u8ddfupload file\u4e00\u6837\uff0c\u5728download file\u65f6\u5ba2\u6237\u7aef\u53ef\u4ee5\u9009\u62e9\u4efb\u610ftracker server\u3002<\/p>\n
tracker\u53d1\u9001download\u8bf7\u6c42\u7ed9\u67d0\u4e2atracker\uff0c\u5fc5\u987b\u5e26\u4e0a\u6587\u4ef6\u540d\u4fe1\u606f\uff0ctracke\u4ece\u6587\u4ef6\u540d\u4e2d\u89e3\u6790\u51fa\u6587\u4ef6\u7684group\u3001\u5927\u5c0f\u3001\u521b\u5efa\u65f6\u95f4\u7b49\u4fe1\u606f\uff0c\u7136\u540e\u4e3a\u8be5\u8bf7\u6c42\u9009\u62e9\u4e00\u4e2astorage\u7528\u6765\u670d\u52a1\u8bfb\u8bf7\u6c42\u3002\u7531\u4e8egroup\u5185\u7684\u6587\u4ef6\u540c\u6b65\u65f6\u5728\u540e\u53f0\u5f02\u6b65\u8fdb\u884c\u7684\uff0c\u6240\u4ee5\u6709\u53ef\u80fd\u51fa\u73b0\u5728\u8bfb\u5230\u65f6\u5019\uff0c\u6587\u4ef6\u8fd8\u6ca1\u6709\u540c\u6b65\u5230\u67d0\u4e9bstorage server\u4e0a\uff0c\u4e3a\u4e86\u5c3d\u91cf\u907f\u514d\u8bbf\u95ee\u5230\u8fd9\u6837\u7684storage\uff0ctracker\u6309\u7167\u5982\u4e0b\u89c4\u5219\u9009\u62e9group\u5185\u53ef\u8bfb\u7684storage\u3002<\/p>\n
1.<\/span> <\/span>\u8be5\u6587\u4ef6\u4e0a\u4f20\u5230\u7684\u6e90\u5934<\/span>storage <\/span>-<\/span> <\/span>\u6e90\u5934<\/span>storage<\/span>\u53ea\u8981\u5b58\u6d3b\u7740\uff0c\u80af\u5b9a\u5305\u542b\u8fd9\u4e2a\u6587\u4ef6\uff0c\u6e90\u5934\u7684\u5730\u5740\u88ab\u7f16\u7801\u5728\u6587\u4ef6\u540d\u4e2d\u3002<\/span> <\/span>2.<\/span> <\/span>\u6587\u4ef6\u521b\u5efa\u65f6\u95f4\u6233==<\/span>storage<\/span>\u88ab\u540c\u6b65\u5230\u7684\u65f6\u95f4\u6233<\/span> <\/span>\u4e14(\u5f53\u524d\u65f6\u95f4-\u6587\u4ef6\u521b\u5efa\u65f6\u95f4\u6233)<\/span> <\/span>><\/span> <\/span>\u6587\u4ef6\u540c\u6b65\u6700\u5927\u65f6\u95f4\uff08\u5982<\/span>5<\/span>\u5206\u949f)<\/span> <\/span>-<\/span> <\/span>\u6587\u4ef6\u521b\u5efa\u540e\uff0c\u8ba4\u4e3a\u7ecf\u8fc7\u6700\u5927\u540c\u6b65\u65f6\u95f4\u540e\uff0c\u80af\u5b9a\u5df2\u7ecf\u540c\u6b65\u5230\u5176\u4ed6<\/span>storage<\/span>\u4e86\u3002<\/span> <\/span>3.<\/span> <\/span>\u6587\u4ef6\u521b\u5efa\u65f6\u95f4\u6233<\/span> <\/span><<\/span> storage<\/span>\u88ab\u540c\u6b65\u5230\u7684\u65f6\u95f4\u6233\u3002<\/span> <\/span>-<\/span> <\/span>\u540c\u6b65\u65f6\u95f4\u6233\u4e4b\u524d\u7684\u6587\u4ef6\u786e\u5b9a\u5df2\u7ecf\u540c\u6b65\u4e86<\/span> <\/span>4.<\/span> <\/span>(\u5f53\u524d\u65f6\u95f4-\u6587\u4ef6\u521b\u5efa\u65f6\u95f4\u6233)<\/span> <\/span>><\/span> <\/span>\u540c\u6b65\u5ef6\u8fdf\u9600\u503c\uff08\u5982\u4e00\u5929\uff09\u3002<\/span> <\/span>-<\/span> <\/span>\u7ecf\u8fc7\u540c\u6b65\u5ef6\u8fdf\u9608\u503c\u65f6\u95f4\uff0c\u8ba4\u4e3a\u6587\u4ef6\u80af\u5b9a\u5df2\u7ecf\u540c\u6b65\u4e86\u3002<\/span><\/pre>\n
\u5c0f\u6587\u4ef6\u5408\u5e76\u5b58\u50a8<\/strong><\/p>\n
\u5c06\u5c0f\u6587\u4ef6\u5408\u5e76\u5b58\u50a8<\/a>\u4e3b\u8981\u89e3\u51b3\u5982\u4e0b\u51e0\u4e2a\u95ee\u9898\uff1a<\/p>\n
1.<\/span> <\/span>\u672c\u5730\u6587\u4ef6\u7cfb\u7edf<\/span>inode<\/span>\u6570\u91cf\u6709\u9650\uff0c\u4ece\u800c\u5b58\u50a8\u7684\u5c0f\u6587\u4ef6\u6570\u91cf\u4e5f\u5c31\u53d7\u5230\u9650\u5236\u3002<\/span> <\/span>2.<\/span> <\/span>\u591a\u7ea7\u76ee\u5f55+\u76ee\u5f55\u91cc\u5f88\u591a\u6587\u4ef6\uff0c\u5bfc\u81f4\u8bbf\u95ee\u6587\u4ef6\u7684\u5f00\u9500\u5f88\u5927\uff08\u53ef\u80fd\u5bfc\u81f4\u5f88\u591a\u6b21<\/span>IO<\/span>\uff09<\/span> <\/span>3.<\/span> <\/span>\u6309\u5c0f\u6587\u4ef6\u5b58\u50a8\uff0c\u5907\u4efd\u4e0e\u6062\u590d\u7684\u6548\u7387\u4f4e<\/span><\/pre>\n
FastDFS\u5728V3.0\u7248\u672c\u91cc\u5f15\u5165\u5c0f\u6587\u4ef6\u5408\u5e76\u5b58\u50a8<\/a>\u7684\u673a\u5236\uff0c\u53ef\u5c06\u591a\u4e2a\u5c0f\u6587\u4ef6\u5b58\u50a8\u5230\u4e00\u4e2a\u5927\u7684\u6587\u4ef6\uff08trunk file\uff09\uff0c\u4e3a\u4e86\u652f\u6301\u8fd9\u4e2a\u673a\u5236\uff0cFastDFS\u751f\u6210\u7684\u6587\u4ef6fileid\u9700\u8981\u989d\u5916\u589e\u52a016\u4e2a\u5b57\u8282<\/p>\n
1.<\/span> trunk file id <\/span>2.<\/span> <\/span>\u6587\u4ef6\u5728<\/span>trunk file<\/span>\u5185\u90e8\u7684<\/span>offset <\/span>3.<\/span> <\/span>\u6587\u4ef6\u5360\u7528\u7684\u5b58\u50a8\u7a7a\u95f4\u5927\u5c0f<\/span> <\/span>\uff08\u5b57\u8282\u5bf9\u9f50\u53ca\u5220\u9664\u7a7a\u95f4\u590d\u7528\uff0c\u6587\u4ef6\u5360\u7528\u5b58\u50a8\u7a7a\u95f4>=\u6587\u4ef6\u5927\u5c0f\uff09<\/span><\/pre>\n
\u6bcf\u4e2atrunk file\u7531\u4e00\u4e2aid\u552f\u4e00\u6807\u8bc6\uff0ctrunk file\u7531group\u5185\u7684trunk server\u8d1f\u8d23\u521b\u5efa\uff08trunk server\u662ftracker\u9009\u51fa\u6765\u7684\uff09\uff0c\u5e76\u540c\u6b65\u5230group\u5185\u5176\u4ed6\u7684storage\uff0c\u6587\u4ef6\u5b58\u50a8\u5408\u5e76\u5b58\u50a8\u5230trunk file\u540e\uff0c\u6839\u636e\u5176offset\u5c31\u80fd\u4ecetrunk file\u8bfb\u53d6\u5230\u6587\u4ef6\u3002<\/p>\n
\u6587\u4ef6\u5728trunk file\u5185\u7684offset\u7f16\u7801\u5230\u6587\u4ef6\u540d\uff0c\u51b3\u5b9a\u4e86\u5176\u5728trunk file\u5185\u7684\u4f4d\u7f6e\u662f\u4e0d\u80fd\u66f4\u6539\u7684\uff0c\u4e5f\u5c31\u4e0d\u80fd\u901a\u8fc7compact\u7684\u65b9\u5f0f\u56de\u6536trunk file\u5185\u5220\u9664\u6587\u4ef6\u7684\u7a7a\u95f4\u3002\u4f46\u5f53trunk file\u5185\u6709\u6587\u4ef6\u5220\u9664\u65f6\uff0c\u5176\u5220\u9664\u7684\u7a7a\u95f4\u662f\u53ef\u4ee5\u88ab\u590d\u7528\u7684\uff0c\u6bd4\u5982\u4e00\u4e2a100KB\u7684\u6587\u4ef6\u88ab\u5220\u9664\uff0c\u63a5\u4e0b\u6765\u5b58\u50a8\u4e00\u4e2a99KB\u7684\u6587\u4ef6\u5c31\u53ef\u4ee5\u76f4\u63a5\u590d\u7528\u8fd9\u7247\u5220\u9664\u7684\u5b58\u50a8\u7a7a\u95f4\u3002<\/p>\n
HTTP\u8bbf\u95ee\u652f\u6301<\/strong><\/p>\n
FastDFS\u7684tracker\u548cstorage\u90fd\u5185\u7f6e\u4e86http\u534f\u8bae\u7684\u652f\u6301\uff0c\u5ba2\u6237\u7aef\u53ef\u4ee5\u901a\u8fc7http\u534f\u8bae\u6765\u4e0b\u8f7d\u6587\u4ef6\uff0ctracker\u5728\u63a5\u6536\u5230\u8bf7\u6c42\u65f6\uff0c\u901a\u8fc7http\u7684redirect\u673a\u5236\u5c06\u8bf7\u6c42\u91cd\u5b9a\u5411\u81f3\u6587\u4ef6\u6240\u5728\u7684storage\u4e0a\uff1b\u9664\u4e86\u5185\u7f6e\u7684http\u534f\u8bae\u5916\uff0cFastDFS\u8fd8\u63d0\u4f9b\u4e86\u901a\u8fc7apache\u6216nginx\u6269\u5c55\u6a21\u5757<\/a>\u4e0b\u8f7d\u6587\u4ef6\u7684\u652f\u6301\u3002<\/p>\n
\"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\"<\/a><\/p>\n
\u5176\u4ed6\u7279\u6027<\/strong><\/p>\n
FastDFS\u63d0\u4f9b\u4e86\u8bbe\u7f6e\/\u83b7\u53d6\u6587\u4ef6\u6269\u5c55\u5c5e\u6027\u7684\u63a5\u53e3\uff08setmeta\/getmeta)\uff0c\u6269\u5c55\u5c5e\u6027\u4ee5key-value\u5bf9\u7684\u65b9\u5f0f\u5b58\u50a8\u5728storage\u4e0a\u7684\u540c\u540d\u6587\u4ef6\uff08\u62e5\u6709\u7279\u6b8a\u7684\u524d\u7f00\u6216\u540e\u7f00\uff09\uff0c\u6bd4\u5982\/group\/M00\/00\/01\/some_file\u4e3a\u539f\u59cb\u6587\u4ef6\uff0c\u5219\u8be5\u6587\u4ef6\u7684\u6269\u5c55\u5c5e\u6027\u5b58\u50a8\u5728\/group\/M00\/00\/01\/.some_file.meta\u6587\u4ef6\uff08\u771f\u5b9e\u60c5\u51b5\u4e0d\u4e00\u5b9a\u662f\u8fd9\u6837\uff0c\u4f46\u673a\u5236\u7c7b\u4f3c\uff09\uff0c\u8fd9\u6837\u6839\u636e\u6587\u4ef6\u540d\u5c31\u80fd\u5b9a\u4f4d\u5230\u5b58\u50a8\u6269\u5c55\u5c5e\u6027\u7684\u6587\u4ef6\u3002<\/p>\n
\u4ee5\u4e0a\u4e24\u4e2a\u63a5\u53e3\u4f5c\u8005\u4e0d\u5efa\u8bae\u4f7f\u7528\uff0c\u989d\u5916\u7684meta\u6587\u4ef6\u4f1a\u8fdb\u4e00\u6b65\u201c\u653e\u5927\u201d\u6d77\u91cf\u5c0f\u6587\u4ef6\u5b58\u50a8\u95ee\u9898\uff0c\u540c\u65f6\u7531\u4e8emeta\u975e\u5e38\u5c0f\uff0c\u5176\u5b58\u50a8\u7a7a\u95f4\u5229\u7528\u7387\u4e5f\u4e0d\u9ad8\uff0c\u6bd4\u5982100bytes\u7684meta\u6587\u4ef6\u4e5f\u9700\u8981\u5360\u75284K\uff08block_size\uff09\u7684\u5b58\u50a8\u7a7a\u95f4\u3002<\/p>\n
FastDFS\u8fd8\u63d0\u4f9bappender file\u7684\u652f\u6301\uff0c\u901a\u8fc7upload_appender_file\u63a5\u53e3\u5b58\u50a8\uff0cappender file\u5141\u8bb8\u5728\u521b\u5efa\u540e\uff0c\u5bf9\u8be5\u6587\u4ef6\u8fdb\u884cappend\u64cd\u4f5c\u3002\u5b9e\u9645\u4e0a\uff0cappender file\u4e0e\u666e\u901a\u6587\u4ef6\u7684\u5b58\u50a8\u65b9\u5f0f\u662f\u76f8\u540c\u7684\uff0c\u4e0d\u540c\u7684\u662f\uff0cappender file\u4e0d\u80fd\u88ab\u5408\u5e76\u5b58\u50a8\u5230trunk file\u3002<\/p>\n
\u95ee\u9898\u8ba8\u8bba<\/strong><\/p>\n
\u4eceFastDFS\u7684\u6574\u4e2a\u8bbe\u8ba1\u770b\uff0c\u57fa\u672c\u4e0a\u90fd\u5df2\u7b80\u5355\u4e3a\u539f\u5219\u3002\u6bd4\u5982\u4ee5\u673a\u5668\u4e3a\u5355\u4f4d\u5907\u4efd\u6570\u636e\uff0c\u7b80\u5316\u4e86tracker\u7684\u7ba1\u7406\u5de5\u4f5c\uff1bstorage\u76f4\u63a5\u501f\u52a9\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u539f\u6837\u5b58\u50a8\u6587\u4ef6\uff0c\u7b80\u5316\u4e86storage\u7684\u7ba1\u7406\u5de5\u4f5c\uff1b\u6587\u4ef6\u5199\u5355\u4efd\u5230storage\u5373\u4e3a\u6210\u529f\u3001\u7136\u540e\u540e\u53f0\u540c\u6b65\uff0c\u7b80\u5316\u4e86\u5199\u6587\u4ef6\u6d41\u7a0b\u3002\u4f46\u7b80\u5355\u7684\u65b9\u6848\u80fd\u89e3\u51b3\u7684\u95ee\u9898\u901a\u5e38\u4e5f\u6709\u9650\uff0cFastDFS\u76ee\u524d\u5c1a\u5b58\u5728\u5982\u4e0b\u95ee\u9898\uff08\u6b22\u8fce\u63a2\u8ba8\uff09\u3002<\/p>\n
\u6570\u636e\u5b89\u5168\u6027<\/p>\n