锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#22269;&#20135;&#31934;&#21697;&#20037;&#20037;&#32593;&#44;&#20037;&#20037;&#20037;&#20037;&#32508;&#21512;&#20013;&#25991;&#23383;&#24149;&#44;&#31934;&#21697;&#32508;&#21512;&#20037;&#20037;&#20037;&#20037;&#20037;&#57;&#55;&#36229;&#20154;</title><link>http://www.shnenglu.com/whspecial/category/20716.html</link><description /><language>zh-cn</language><lastBuildDate>Wed, 23 Oct 2013 17:06:58 GMT</lastBuildDate><pubDate>Wed, 23 Oct 2013 17:06:58 GMT</pubDate><ttl>60</ttl><item><title>KFS浠ｇ爜鍒嗘瀽2錛坢eta鍏冩暟鎹寔涔呭寲錛?/title><link>http://www.shnenglu.com/whspecial/archive/2013/10/24/203894.html</link><dc:creator>whspecial</dc:creator><author>whspecial</author><pubDate>Wed, 23 Oct 2013 17:03:00 GMT</pubDate><guid>http://www.shnenglu.com/whspecial/archive/2013/10/24/203894.html</guid><wfw:comment>http://www.shnenglu.com/whspecial/comments/203894.html</wfw:comment><comments>http://www.shnenglu.com/whspecial/archive/2013/10/24/203894.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/whspecial/comments/commentRss/203894.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/whspecial/services/trackbacks/203894.html</trackback:ping><description><![CDATA[<p style="line-height:150%"><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">KFS</span><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">鐨勫厓鏁版嵁鎸佷箙鍖栨槸渚濊禆checkpoint鍜宱peration log緇撳悎鏉ュ伐浣滅殑錛屽叾涓璫heckpoint欏懼悕鎬濅箟淇濆瓨鐨勬槸鏌愪釜鐐瑰唴瀛樼殑鐘舵�侊紝operation log璁板綍鐨勬槸瀵瑰厓鏁版嵁淇敼鐨勬搷浣滄棩蹇椼�?/span></p>  <h1><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">浣跨敤</span><span style="font-size:12.0pt;">checkpoint+log</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鐨勮璁?br /></span><span style="font-weight: normal;"><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp; </span></span><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">鍏冩暟鎹俊鎭繀欏昏鎸佷箙鍖栵紝鍚﹀垯鎺夌數鎴栬�呬漢宸ラ噸鍚箣鍚庤淇℃伅涓㈠け<br /></span><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp; </span></span><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">渚夸簬蹇�熼噸鍚紝鍙互浠庢渶榪戠殑涓�涓猚p涓揩閫熸瀯寤哄唴瀛樼姸鎬侊紝鍔犱笂璇p涔嬪悗鐨刲og灝卞彲浠ュ畬鏁村湴鏋勫緩鍐呭瓨<br /><br /></span></span></h1>  <h1><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">璇誨啓</span><span style="font-size:12.0pt;">checkpoint</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鍜?/span><span style="font-size:12.0pt;">log</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鐨勮繃紼?br /><br /></span><strong style="line-height: 150%; font-size: 14px;">Metaserver</strong><strong style="line-height: 150%; font-size: 14px;"><span style="font-family:瀹嬩綋;">鍚姩鏃剁殑鍐呭瓨鏋勫緩錛?/span></strong></h1>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">鍦?/span>Startup.cc<span style="font-family:瀹嬩綋;">璋冪敤</span>rebuild<span style="font-family:瀹嬩綋;">鍑芥暟</span></p>  <p style="margin-left:36.0pt;text-indent:-36.0pt;line-height:150%;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-family:瀹嬩綋;">濡傛灉涔嬪墠宸茬粡鏈変簡</span>checkpoint<span style="font-family:瀹嬩綋;">錛屼粠</span>checkpoint<span style="font-family:瀹嬩綋;">閲岄噸寤哄唴瀛樻爲錛屽惁鍒欐柊寤轟竴媯靛唴瀛樻爲</span></p>  <p style="margin-left:36.0pt;text-indent:-36.0pt;line-height:150%;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-family:瀹嬩綋;">鍦ㄥ唴瀛樹腑</span>replay<span style="font-family:瀹嬩綋;">璇?/span>checkpoint<span style="font-family:瀹嬩綋;">涔嬪悗鐨勬墍鏈?/span>operation log<br /><br /></p>  <p style="line-height:150%"><strong>MetaServer</strong><strong><span style="font-family:瀹嬩綋;">榪愯鏃跺啓鍏ユ柊鐨?/span>checkpoint</strong><strong><span style="font-family:瀹嬩綋;">錛?br /></span></strong></p>  <p style="line-height:150%">logcompactor_main.cc<span style="font-family:瀹嬩綋;">鐨?/span>main<span style="font-family:瀹嬩綋;">鍑芥暟璋冪敤錛屽簲璇ユ槸浠ヨ皟鐢ㄥ彟涓�涓繘紼嬬殑鏂瑰紡鏉ユ墽琛岋紝鐚滄兂鏄?/span>Metaserver<span style="font-family:瀹嬩綋;">榪涚▼浼氬畾鏃惰皟鐢ㄨ榪涚▼</span></p>  <p style="margin-left:36.0pt;text-indent:-36.0pt;line-height:150%;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-family:瀹嬩綋;">鏍規嵁鏃х殑</span>checkpoint<span style="font-family:瀹嬩綋;">鍦ㄥ唴瀛樹腑鐢熸垚鐘舵�?/span></p>  <p style="margin-left:36.0pt;text-indent:-36.0pt;line-height:150%;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-family:瀹嬩綋;">鍦ㄥ唴瀛樹腑</span>replay<span style="font-family:瀹嬩綋;">涔嬪悗鐨?/span>op log</p>  <p style="margin-left:36.0pt;text-indent:-36.0pt;line-height:150%;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-family:瀹嬩綋;">灝嗘鏃剁殑鍐呭瓨鐘舵�佸啓鍏ユ柊鐨?/span>checkpoint<br /><br /></p>  <p style="line-height:150%"><strong>MetaServer</strong><strong><span style="font-family:瀹嬩綋;">榪愯鏃跺啓鍏ユ柊鐨?/span>log</strong><strong><span style="font-family:瀹嬩綋;">錛?/span></strong></p>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">鐢?/span>logger.cc<span style="font-family:瀹嬩綋;">鏉ュ啓鍏ユ柊</span>log<span style="font-family:瀹嬩綋;">錛岀湅浜嗕唬鐮佸簲璇ユ槸姣忔淇敼浜嗗厓淇℃伅鐨勬搷浣滐紝閮戒細灝嗚繖鏉?/span>op log<span style="font-family:瀹嬩綋;">鍐欏叆紓佺洏錛岃櫧鐒舵�ц兘涓嶉珮錛屼絾鏄瘮杈冨彲闈狅紙涔嬪墠涔熻嚜宸卞啓榪囨棩蹇楀簱錛屼嬌鐢ㄧ殑鏄袱涓?/span>buffer<span style="font-family:瀹嬩綋;">浜ゆ崲鍐欏叆錛岃繖鏍鋒瘮杈冮珮鏁堜竴浜涳級</span></p><img src ="http://www.shnenglu.com/whspecial/aggbug/203894.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/whspecial/" target="_blank">whspecial</a> 2013-10-24 01:03 <a href="http://www.shnenglu.com/whspecial/archive/2013/10/24/203894.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>KFS浠ｇ爜鍒嗘瀽1錛坢eta鍐呭瓨緇撴瀯錛?/title><link>http://www.shnenglu.com/whspecial/archive/2013/10/23/203879.html</link><dc:creator>whspecial</dc:creator><author>whspecial</author><pubDate>Tue, 22 Oct 2013 17:36:00 GMT</pubDate><guid>http://www.shnenglu.com/whspecial/archive/2013/10/23/203879.html</guid><wfw:comment>http://www.shnenglu.com/whspecial/comments/203879.html</wfw:comment><comments>http://www.shnenglu.com/whspecial/archive/2013/10/23/203879.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/whspecial/comments/commentRss/203879.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/whspecial/services/trackbacks/203879.html</trackback:ping><description><![CDATA[<p><span style="font-family: Verdana; font-size: 10pt;">姝ゅ鐨凨FS鏄寚</span><span style="font-family: Verdana; font-size: 10pt; line-height: 18px; background-color: #ffffff;">Kosmos distributed file system錛屼唬鐮佷綅浜?/span><span style="font-family: Verdana; font-size: 10pt;"><a >http://sourceforge.net/projects/kosmosfs/</a>錛屼箣鍚庝細鍐欏嚑綃囩浉鍏崇殑鏂囩珷錛屼互渚涘悗鏉ヨ�呭弬鑰冦�?/span><span style="font-family: Verdana; font-size: 10pt;"><br /></span><span style="font-family: 瀹嬩綋;"><br />KFS閲孧eta鐨勫唴瀛樼粨鏋勪富瑕佹槸涓�媯礏+鏍戯紝淇濆瓨鍦ㄥ唴瀛橀噷錛屽叿浣撳垎鏋愬涓嬶細</span></p>  <h1><span style="font-size:12.0pt;">B-</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍戯紝</span><span style="font-size:12.0pt;">B+</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍戠殑瀹氫箟</span></h1>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">鍏充簬榪欎簺鏍戠殑瀹氫箟錛屾渶濂借繕鏄弬鑰冪畻娉曞璁虹瓑緇忓吀涔︼紝緗戣礬涓婄殑淇℃伅鏈変簺涓嶆槸寰堝噯紜紝涓轟簡鏂逛究澶у榪樻槸璐翠竴涓摼鎺ワ細</span></p>  <p style="line-height:150%"><a >http://www.cnblogs.com/oldhorse/archive/2009/11/16/1604009.html</a></p>  <h1><span style="font-size:12.0pt;">KFS</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">涓轟綍閫夌敤</span><span style="font-size:12.0pt;">B+</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍戣�岄潪</span><span style="font-size:12.0pt;">B</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍戯紵</span></h1>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">榪欐槸鎴戜釜浜虹殑鐞嗚В錛?/span></p>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">铏界劧</span>B<span style="font-family:瀹嬩綋;">鏍戝彲浠ュ湪闈炲彾瀛愯妭鐐瑰懡涓紝浼氱緝鐭竴浜涘鉤鍧囨煡鎵鵑暱搴︼紝浣嗘槸</span>B+<span style="font-family:瀹嬩綋;">鏍戝湪榪欑搴旂敤涓�涓紭鍔垮氨鏄瘡涓妭鐐歸兘鏈夋寚鍚?/span>next<span style="font-family:瀹嬩綋;">鑺傜偣鐨勬寚閽堬紝瀵逛簬鑼冨洿鏌ヨ鎴栬�呴亶鍘嗘搷浣滃緢閫傚悎銆傚浜庢枃浠剁郴緇熺殑涓�涓?/span>ls<span style="font-family:瀹嬩綋;">鏌愪釜瀛愮洰褰曠殑闇�姹傦紝鐢?/span>B+<span style="font-family:瀹嬩綋;">鏍戝彲浠ヨ緝楂樻晥鐨勮В鍐熾�?/span></p>  <h1><span style="font-size:12.0pt;">KFS</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">閲?/span><span style="font-size:12.0pt;">B+</span><span style="font-size:12.0pt; font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍戠殑綾誨浘<br /></span></h1><p style="line-height: 150%;"><span style="font-size: 11.0pt;line-height:150%"><img src="http://www.shnenglu.com/images/cppblog_com/whspecial/image1.png" width="480" height="184" alt="" /><br />MetaNode</span><span style="font-size:11.0pt;line-height:150%;font-family: 瀹嬩綋;">錛?/span>base class for both internal and leaf nodes</p>  <p style="line-height:150%"><span style="font-size: 11.0pt;line-height:150%">Meta</span><span style="font-size:11.0pt;line-height:150%;font-family: 瀹嬩綋;">錛?/span>base class for data objects (leaf nodes)</p>  <p style="line-height:150%">Node<span style="font-family:瀹嬩綋;">錛?/span>an internal node in the KFS search tree</p>  <p style="line-height:150%">MetaChunkInfo<span style="font-family:瀹嬩綋;">錛?/span>chunk information for a given file offset </p>  <p style="line-height:150%">MetaDentry <span style="font-family:瀹嬩綋;">錛?/span>Directory entry, mapping a file name to a file id</p>  <p style="line-height:150%">MetaFattr<span style="font-family:瀹嬩綋;">錛?/span>File or directory attributes</p>  <h1><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鍚勮妭鐐圭殑浠嬬粛<br /></span></h1>  <p style="line-height:150%"><strong><span style="font-family:瀹嬩綋;">錛?/span>1</strong><strong><span style="font-family:瀹嬩綋;">錛?/span>Meta</strong><span style="font-family:瀹嬩綋;">綾繪槸瀛愯妭鐐圭殑鐖剁被錛屽叾鏈�涓昏鐨勬垚鍛樺彉閲忔槸</span>fid<br /></p><p style="line-height:150%"><span style="font-family:瀹嬩綋;">鏈変笁涓彾瀛愯妭鐐癸細</span>MetaChunkInfo<span style="font-family:瀹嬩綋;">錛?/span>MetaDentry<span style="font-family:瀹嬩綋;">錛?/span>MetaFattr<br /><br /></p>  <p style="line-height:150%"><strong><span style="font-family:瀹嬩綋;">錛?/span>2</strong><strong><span style="font-family:瀹嬩綋;">錛?/span>MetaDentry</strong><strong><span style="font-family:瀹嬩綋;">錛?/span></strong><span style="font-family:瀹嬩綋;">瀹炵幇浠庢枃浠跺悕鍒?/span>fid<span style="font-family:瀹嬩綋;">鐨勬槧灝勶紝瀵逛簬姣忎釜鏂囦歡錛堢洰褰曪級閮芥嫢鏈?/span>1<span style="font-family:瀹嬩綋;">涓?/span>MetaDentry</p><p style="line-height:150%"><span style="font-family:瀹嬩綋;">鎴愬憳鍙橀噺鍖呮嫭錛?/span></p>  <p style="line-height:150%">dir<span style="font-family:瀹嬩綋;">錛氭枃浠剁埗鐩綍鐨?/span>fid</p>  <p style="line-height:150%">name<span style="font-family:瀹嬩綋;">錛?/span>dentry<span style="font-family:瀹嬩綋;">鐨勫悕縐幫紝瀹為檯灝辨槸鏂囦歡鍚?br /><br /></span></p>  <p style="line-height:150%"><strong><span style="font-family:瀹嬩綋;">錛?/span>3</strong><strong><span style="font-family:瀹嬩綋;">錛?/span>MetaFattr</strong><strong><span style="font-family: 瀹嬩綋;">錛?/span></strong><span style="font-family:瀹嬩綋;">瀹炵幇浠?/span>fid<span style="font-family:瀹嬩綋;">鍒版枃浠跺睘鎬х殑鏄犲皠錛屽浜庢瘡涓枃浠訛紙鐩綍錛夐兘鎷ユ湁涓�涓?/span>MetaFattr<span style="font-family:瀹嬩綋;">銆?br /></span></p><p style="line-height:150%"><span style="font-family:瀹嬩綋;">鎴愬憳鍙橀噺鍖呮嫭錛?/span></p>  <p style="line-height:150%">Type<span style="font-family:瀹嬩綋;">錛氭枃浠惰繕鏄洰褰?/span></p>  <p style="line-height:150%">numReplicas<span style="font-family:瀹嬩綋;">錛氭枃浠舵湁鍑犱喚鍓湰</span></p>  <p style="line-height:150%">mtime<span style="font-family:瀹嬩綋;">錛氫慨鏀規椂闂?/span></p>  <p style="line-height:150%">ctime<span style="font-family:瀹嬩綋;">錛氬睘鎬т慨鏀規椂闂?/span></p>  <p style="line-height:150%">crtime<span style="font-family:瀹嬩綋;">錛氭枃浠跺垱寤烘椂闂?/span></p>  <p style="line-height:150%">chunkcount<span style="font-family:瀹嬩綋;">錛氳繛緇殑</span>chunk<span style="font-family:瀹嬩綋;">鏁扮洰</span></p>  <p style="line-height:150%">filesize<span style="font-family:瀹嬩綋;">錛氭枃浠跺ぇ灝?/span></p>  <p style="line-height:150%">nextChunkOffset<span style="font-family:瀹嬩綋;">錛氭渶鍚庝竴涓?/span>chunk<span style="font-family:瀹嬩綋;">鍦ㄦ枃浠剁殑鎵�澶勭殑</span>offset</p>  <p style="line-height:150%">mode_t mode<span style="font-family:瀹嬩綋;">錛氭枃浠跺睘鎬э紙</span>rwx<span style="font-family:瀹嬩綋;">浣嶏級</span></p>  <p style="line-height:150%">key<span style="font-family:瀹嬩綋;">錛氱敱</span>KFS_FATTR<span style="font-family:瀹嬩綋;">錛?/span>fid<span style="font-family:瀹嬩綋;">鏉ユ瀯鎴愶紝鍙互閫氳繃</span>fid<span style="font-family:瀹嬩綋;">鐩存帴鎵懼埌淇濆瓨鏂囦歡灞炴�х殑鑺傜偣銆?br /></span><br /> <strong><span style="font-family:瀹嬩綋;">錛?/span>4</strong><strong><span style="font-family:瀹嬩綋;">錛?/span>MetaChunkInfo</strong><strong><span style="font-family: 瀹嬩綋;">錛?/span></strong><span style="font-family:瀹嬩綋;">鏍囧織鏌愪釜鏂囦歡瀵瑰簲鐨?/span>chunk<span style="font-family:瀹嬩綋;">淇℃伅錛屽鏋滀竴涓枃浠跺寘鍚涓?/span>chunk<span style="font-family:瀹嬩綋;">錛岄偅涔堥渶瑕佹湁澶氫釜</span>MetaChunkInfo<span style="font-family:瀹嬩綋;">銆?br /></span></p><p style="line-height:150%"><span style="font-family:瀹嬩綋;">鎴愬憳鍙橀噺鍖呮嫭錛?/span></p>  <p style="line-height:150%">offset<span style="font-family:瀹嬩綋;">錛?/span>chunk<span style="font-family:瀹嬩綋;">鍦ㄦ枃浠朵腑鐨勫亸縐婚噺錛屽洜涓轟竴涓枃浠跺彲鑳界敱澶氫釜</span>chunk<span style="font-family:瀹嬩綋;">緇勬垚</span></p>  <p style="line-height:150%">chunkId<span style="font-family:瀹嬩綋;">錛?/span>chunk<span style="font-family:瀹嬩綋;">鐨?/span>id<span style="font-family:瀹嬩綋;">鍙?/span></p>  <p style="line-height:150%">chunkVersion<span style="font-family:瀹嬩綋;">錛?/span>chunk<span style="font-family:瀹嬩綋;">鐨?/span>version<span style="font-family:瀹嬩綋;">鍊?br /><br /></span></p>  <p style="line-height:150%"><strong><span style="font-family:瀹嬩綋;">錛?/span>5</strong><strong><span style="font-family:瀹嬩綋;">錛?/span>Node</strong><strong><span style="font-family: 瀹嬩綋;">錛?/span></strong><span style="font-family:瀹嬩綋;">瀹炵幇鐨勬槸</span>B+<span style="font-family:瀹嬩綋;">鏍戠殑鍐呴儴鑺傜偣錛岃繖縐嶈妭鐐逛粎浠呬綔涓虹儲寮曠敤閫旓紝瀛樺偍瀹為檯鍏冩暟鎹俊鎭殑鑺傜偣浣嶄簬鏈�搴曢儴鐨勫彾瀛愯妭鐐廣�?br /></span></p><p style="line-height:150%"><span style="font-family:瀹嬩綋;">鎴愬憳鍙橀噺鍖呮嫭錛?/span></p>  <p style="line-height:150%">NKEY = 32<span style="font-family:瀹嬩綋;">錛氭瘡涓妭鐐規渶澶氭嫢鏈夌殑鍏抽敭瀛楁暟鐩紝瀹為檯涓婁篃灝辨槸鏈�澶氭嫢鏈夌殑瀛愯妭鐐規暟鐩紝濡傛灉澶氫綑榪欎釜鍊艱妭鐐硅繘琛屽垎瑁?/span></p>  <p style="line-height:150%">NSPLIT = NKEY / 2<span style="font-family:瀹嬩綋;">錛氬垎瑁備箣鍚庢瘡涓妭鐐圭殑鍏抽敭瀛楁暟鐩?/span></p>  <p style="line-height:150%">NFEWEST = NKEY - NSPLIT<span style="font-family:瀹嬩綋;">錛氭瘡涓妭鐐規渶灝戞嫢鏈夌殑鍏抽敭瀛楁暟鐩紝濡傛灉灝戜簬榪欎釜鍊間袱涓妭鐐硅繘琛屽悎騫?/span></p>  <p style="line-height:150%">count<span style="font-family:瀹嬩綋;">錛氳妭鐐瑰疄闄呮嫢鏈夌殑鍏抽敭瀛楁暟鐩?/span></p>  <p style="line-height:150%">Key childKey[NKEY]<span style="font-family:瀹嬩綋;">錛氳妭鐐瑰瓨鍌ㄧ殑鍏抽敭瀛楀垪琛?/span></p>  <p style="line-height:150%">MetaNode *childNode[NKEY]<span style="font-family:瀹嬩綋;">錛氳妭鐐規寚鍚戝瓙鑺傜偣鐨勬寚閽堝垪琛?/span></p>  <p style="line-height:150%">Node *next<span style="font-family:瀹嬩綋;">錛氭寚鍚戜笅涓�涓悓綰ц妭鐐圭殑鎸囬拡</span></p>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">瀹為檯涓婃瘡涓唴閮ㄨ妭鐐圭殑闃舵暟涓?/span>32<span style="font-family:瀹嬩綋;">錛屽彲浠ユ湁</span>32<span style="font-family:瀹嬩綋;">涓瓙鑺傜偣錛岃�屾瘡涓彾瀛愯妭鐐瑰彧淇濆瓨涓�涓?/span>key<span style="font-family:瀹嬩綋;">鍊箋�?/span></p>  <h1><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">涓夌被瀛愯妭鐐瑰湪</span><span style="font-size:12.0pt;">B+</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍戜腑濡備綍鍒嗗竷錛?/span></h1>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">鍙互鎯寵薄錛屽繀瀹氭槸灝嗗悓涓�綾葷殑鑺傜偣鑱氶泦鍦ㄤ竴璧楓�傚洜姝ゅ浜庢帓搴忓嚱鏁板氨鏄厛姣旇緝鑺傜偣綾誨瀷錛岀劧鍚庡啀瀵硅妭鐐瑰唴閮ㄧ殑鎴愬憳鍙橀噺榪涜姣旇緝銆?/span>MetaDentry<span style="font-family:瀹嬩綋;">鏄牴鎹?/span>dir<span style="font-family:瀹嬩綋;">錛堢埗鐩綍鐨?/span>id<span style="font-family:瀹嬩綋;">錛夛紝</span>MetaFattr<span style="font-family:瀹嬩綋;">鏄牴鎹?/span>fid<span style="font-family:瀹嬩綋;">錛?/span>MetaChunkInfo<span style="font-family:瀹嬩綋;">鏄牴鎹?/span>id<span style="font-family:瀹嬩綋;">鍜?/span>chunkId<span style="font-family:瀹嬩綋;">鏉ユ帓搴忋�?/span></p>  <h1><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">涓�涓笉澶浉鍏崇殑鎬濊�?/span></h1>  <p style="line-height:150%"><span style="font-size: 10pt; line-height: 150%; font-family: 瀹嬩綋;">鐪嬩笂闈㈢殑涓夌被瀛愯妭鐐癸紝鎴戜滑鍙互鍙戠幇chunk鐨勪綅緗俊鎭茍娌℃湁淇濆瓨鍦˙+鏍戦噷錛屽畠鏄崟鐙繚瀛樺湪涓�涓狹ap鏁版嵁緇撴瀯閲岀殑錛屼篃涓嶄細鍦╩eta server閲岃繘琛屾寔涔呭寲錛岃�屾槸姣忔chunk鍚姩鏃跺悜meta server鏉ユ姤鍛娿�備箣鎵�浠ヤ笉鍋氭寔涔呭寲錛屽彲浠ヨ繖鏍鋒潵鐞嗚В錛?/span></p>  <p style="line-height:150%"><span style="font-size: 10pt; line-height: 150%; font-family: 瀹嬩綋;">鍙湁Chunk鏈嶅姟鍣ㄦ墠鑳芥渶緇堢‘瀹氫竴涓狢hunk鏄惁鍦ㄥ畠鐨勭‖鐩樹笂銆侰hunk鏈嶅姟鍣ㄧ殑閿欒鍙兘浼氬鑷碈hunk鑷姩娑堝け(姣斿錛岀‖鐩樻崯鍧忎簡鎴栬�呮棤娉曡闂簡)錛屼害鎴栬�呮搷浣滀漢鍛樺彲鑳戒細閲嶅懡鍚嶄竴涓狢hunk鏈嶅姟鍣紝榪樻槸鐢眂hunk server鏉ユ姤鍛婃瘮杈冮潬璋便�?/span></p><img 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