{"id":1727,"date":"2021-02-15T21:55:12","date_gmt":"2021-02-15T13:55:12","guid":{"rendered":"https:\/\/881880.xyz\/?p=1727"},"modified":"2021-02-15T21:58:58","modified_gmt":"2021-02-15T13:58:58","slug":"%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%a1%ac%e7%9b%98%e6%b5%8b%e8%af%95-%e7%be%a4%e6%99%96%e7%a1%ac%e7%9b%98%e6%b5%8b%e8%af%95","status":"publish","type":"post","link":"https:\/\/881880.xyz\/?p=1727","title":{"rendered":"\u670d\u52a1\u5668\u786c\u76d8\u6d4b\u8bd5 \u7fa4\u6656\u786c\u76d8\u6d4b\u8bd5"},"content":{"rendered":"<p>\u7ec4\u4e86\u4e2aRaid 5 \u7684\u9ed1\u7fa4\u6656\u60f3\u770b\u770b\u786c\u76d8\u901f\u5ea6\u5982\u4f55\u3002\u6765\u8bd5\u8bd5\u8fd9\u4e2a\u547d\u4ee4\u5427<\/p>\n<p>sudo time dd if=\/dev\/sda4 of=\/dev\/null bs=4k count=800000<\/p>\n<p><span style=\"font-family: Source Sans Pro;\">if=<\/span><span style=\"font-family: \u5b8b\u4f53;\">\u540e\u9762\u662f\u78c1\u76d8\u5206\u533a<\/span><span style=\"font-family: Source Sans Pro;\">,<\/span><span style=\"font-family: \u5b8b\u4f53;\">\u53ef\u4ee5\u7528<\/span><span style=\"font-family: Source Sans Pro;\"> df <\/span><span style=\"font-family: \u5b8b\u4f53;\">\u6307\u4ee4\u5217\u8868\u6765\u5217\u51fa\u67e5\u770b<\/span><\/p>\n<p>\u4e3e\u4f8b\u5b50<\/p>\n<p>\u9996\u5148\u8fdb\u5165\u4f60\u7684SSH<\/p>\n<p>Root\u4e00\u4e0b \u8fd9\u4e2a\u547d\u4ee4 \u5305\u542bsudo \u6211\u7684\u7fa4\u6656\u5c31\u63d0\u793a\u8f93\u5165\u4e00\u6b21\u5bc6\u7801\u3002\u5c31\u6b63\u5e38\u5f00\u59cb\u4e86\u3002<\/p>\n<pre class=\"lang:default decode:true \">sudo time dd if=\/dev\/md2 of=\/dev\/null bs=4k count=800000\n\n800000+0 records in\n\n800000+0 records out\n\n3276800000 bytes (3.3 GB) copied, 10.0068 s, 327 MB\/s\n\n0.03user 1.50system 0:10.01elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k\n\n0inputs+0outputs (0major+0minor)pagefaults 0swaps<\/pre>\n<p>\u4f46\u662f\u6211\u7684VPS\u7531\u4e8e\u5c31\u662froot \u63d0\u793a\u9519\u8bef\u3002\u5220\u9664sudo \u76f4\u63a5\u7528<\/p>\n<pre class=\"lang:default decode:true \">time dd if=\/dev\/sda4 of=\/dev\/null bs=4k count=800000\n\n\u8bb0\u5f55\u4e86800000+0 \u7684\u8bfb\u5165\n\n\u8bb0\u5f55\u4e86800000+0 \u7684\u5199\u51fa\n\n3276800000\u5b57\u8282(3.3 GB)\u5df2\u590d\u5236\uff0c21.4219 \u79d2\uff0c153 MB\/\u79d2\n\n\n\n\nreal 0m21.460s\n\nuser 0m1.419s\n\nsys 0m7.616s<\/pre>\n<p>\u53e6\u5916\u4e00\u4e2aVPS\u6d4b\u8bd5\u4e00\u4e0b<\/p>\n<pre class=\"lang:default decode:true \">time dd if=\/dev\/vda1 of=\/dev\/null bs=4k count=800000\n\n\u8bb0\u5f55\u4e86800000+0 \u7684\u8bfb\u5165\n\n\u8bb0\u5f55\u4e86800000+0 \u7684\u5199\u51fa\n\n3276800000\u5b57\u8282(3.3 GB)\u5df2\u590d\u5236\uff0c25.077 \u79d2\uff0c131 MB\/\u79d2\n\n\n\n\nreal 0m25.079s\n\nuser 0m0.644s\n\nsys 0m3.468s<\/pre>\n<p>\u8fd9\u5c31\u662f\u8bf4\u6211\u7684VPS\u7684\u666e\u901a\u786c\u76d8\uff08\u975e\u56fa\u6001\uff09\u8bfb\u901f\u5ea6\u662f153MB \u800c Raid5 \u7684\u7fa4\u6656\u662f 327MB<\/p>\n<p>\u6211\u4eec\u77e5\u9053\u5927\u6982\u673a\u68b0\u786c\u76d8\u7684\u8bfb\u901f\u5ea6\u5e94\u8be5\u662f160\u5de6\u53f3\u3002\u5b9e\u9645\u6d4b\u91cf\u4e5f\u7b26\u5408\u3002Raid 5 \u8fd8\u662f\u6709\u70b9\u4f18\u52bf\u7684\u3002<\/p>\n<p>\u6d4b\u8bd5\u7684\u65f6\u5019\u8bb0\u5f97\u5148\u7528DF-h \u770b\u4e00\u4e0b\u786c\u76d8\u4f60\u4eec\u4e5f\u6ce8\u610fif\u540e\u9762\u7684\u90a3\u4e2a\u5728\u4e0d\u540c\u6d4b\u8bd5\u6761\u4ef6\u4e0b\u662f\u8981\u6539\u7684\u3002Count \u4e5f\u53ef\u4ee5\u6539400000\u5c31\u662f\u5927\u7ea61.5G\u6570\u636e\u4f60\u4e5f\u53ef\u4ee5\u6539\u5927\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7ec4\u4e86\u4e2aRaid 5 \u7684\u9ed1\u7fa4\u6656\u60f3\u770b\u770b\u786c\u76d8\u901f\u5ea6\u5982\u4f55\u3002\u6765 &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-1727","post","type-post","status-publish","format-standard","hentry","category-7"],"_links":{"self":[{"href":"https:\/\/881880.xyz\/index.php?rest_route=\/wp\/v2\/posts\/1727","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/881880.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/881880.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/881880.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/881880.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1727"}],"version-history":[{"count":2,"href":"https:\/\/881880.xyz\/index.php?rest_route=\/wp\/v2\/posts\/1727\/revisions"}],"predecessor-version":[{"id":1730,"href":"https:\/\/881880.xyz\/index.php?rest_route=\/wp\/v2\/posts\/1727\/revisions\/1730"}],"wp:attachment":[{"href":"https:\/\/881880.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1727"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/881880.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1727"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/881880.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}