{"id":911,"date":"2022-08-01T02:07:53","date_gmt":"2022-08-01T02:07:53","guid":{"rendered":"http:\/\/www.recologypower.com:9080\/?p=911"},"modified":"2022-08-07T08:07:54","modified_gmt":"2022-08-07T08:07:54","slug":"%e3%80%90%e6%96%87%e4%bb%b6%e7%b3%bb%e7%bb%9f%e3%80%91","status":"publish","type":"post","link":"http:\/\/www.recologypower.com:9080\/?p=911","title":{"rendered":"\u3010\u6587\u4ef6\u7cfb\u7edf\u3011ramFs"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u7b80\u4ecb:<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>     ramfs\u662fLinux\u4e0b\u4e00\u79cd\u57fa\u4e8eRAM\u505a\u5b58\u50a8\u7684\u6587\u4ef6\u7cfb\u7edf\u3002\u5728\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u4f60\u5c31\u53ef\u4ee5\u628aramfs\u7406\u89e3\u4e3a\u5728\u666e\u901a\u7684HDD\u4e0a\u5efa\u7acb\u4e86\u4e00\u4e2a\u6587\u4ef6\u7cfb\u7edf\uff0c\u800c\u73b0\u5728HDD\u88ab\u66ff\u6362\u6210\u4e86RAM\uff0c\u56e0\u4e3a\u662fRAM\u505a\u5b58\u50a8\u6240\u4ee5\u4f1a\u6709\u5f88\u9ad8\u7684\u5b58\u50a8\u6548\u7387\u3002\u7531\u4e8eramfs\u7684\u5b9e\u73b0\u5c31\u76f8\u5f53\u4e8e\u628aRAM\u4f5c\u4e3a\u6700\u540e\u4e00\u5c42\u7684\u5b58\u50a8\uff0c\u6240\u4ee5\u5728ramfs\u4e2d\u4e0d\u4f1a\u4f7f\u7528swap\u3002\u4f60\u4ec0\u4e48\u65f6\u5019\u542c\u8fc7\u4f1a\u628aHDD\u4e0a\u7684\u6587\u4ef6swap\u5230\u54ea\u91cc\u53bb\u5417\uff1f\u5e73\u5e38\u8bf4\u7684swap\u90fd\u662f\u9488\u5bf9\u5185\u5b58\u6765\u8bf4\u7684\uff0c\u800cramfs\u5e95\u5c42\u7684\u5b58\u50a8\u662fRAM\uff0c\u867d\u7136\u4e0d\u662fHDD\uff0c\u4f46\u662f\u5728Linux\u770b\u6765\u5b83\u5c31\u8ddfHDD\u4e00\u6837\u3002\u4f46\u662framfs\u6709\u4e00\u4e2a\u5f88\u5927\u7684\u7f3a\u9677\u5c31\u662f\u5b83\u4f1a\u5403\u5149\u7cfb\u7edf\u6240\u6709\u7684\u5185\u5b58\uff0c\u5373\u4f7f\u4f60mount\u7684\u65f6\u5019\u6307\u5b9a\u4e86\u5927\u5c0f\uff0c\u540c\u65f6\u5b83\u4e5f\u53ea\u80fd\u88abroot\u7528\u6237\u8bbf\u95ee\u3002\u6d4b\u8bd5\u65b9\u6cd5\u5f88\u7b80\u5355\uff1a<\/code><\/pre>\n\n\n\n<p>sudo mount -t ramfs -o size=10M ramfs .\/ramfs\/<\/p>\n\n\n\n<p>sudo dd if=\/dev\/zero of=.\/ramfs\/test.file bs=1M count=20<\/p>\n\n\n\n<p>\u6d4b\u8bd5\u65f6\u4f60\u4f1a\u53d1\u73b0\u4e0a\u9762\u8fd9\u4e2a\u64cd\u4f5c\u662f\u80fd\u6210\u529f\u7684\uff0c\u6216\u8005\u4f60\u518d\u81ea\u5df1\u865a\u62df\u673a\u4e0a\u5e72\u8106\u505a\u72e0\u70b9\uff0c\u76f4\u63a5\u5199\u4e00\u4e2a\u6bd4\u5185\u5b58\u66f4\u5927\u7684\u6587\u4ef6\uff0c\u4f60\u4f1a\u53d1\u73b0\u77ac\u95f4\u7cfb\u7edf\u5c31\u5361\u4e3b\u4e86\u3002\u53e6\u5916\u5728dd\u547d\u4ee4\u5982\u679c\u4e0d\u4ee5root\u7528\u6237\u6267\u884c\u5c31\u4f1a\u6743\u9650\u4e0d\u591f\uff1a<\/p>\n\n\n\n<p>dd: opening `.\/ramfs\/test.file&#8217;: Permission denied<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u6d4b\u8bd5:<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>    \u4f7f\u7528\u5de5\u5177\n\n    (1)  \u6811\u8393\u6d3e \u5b98\u65b9\u955c\u50cf \n\n  \uff082\uff09putty \u8fdb\u884c \u767b\u5f55\uff0c \u5e76\u64cd\u4f5c\n\n    Note: \u672c\u5b9e\u9a8c\u76f4\u63a5\u91c7\u7528\u7684\u662f root \u7528\u6237\u8fdb\u884c\u767b\u5f55\u5b9e\u9a8c<\/code><\/pre>\n\n\n\n<ol><li>\u767b\u5f55 Linux \u7cfb\u7edf;<\/li><li>\u51c6\u5907 \u4e00\u4e2a10M\u7684\u6587\u4ef6;<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"825\" height=\"213\" src=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555.png\" alt=\"\" class=\"wp-image-912\" srcset=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555.png 825w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-300x77.png 300w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-768x198.png 768w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-600x155.png 600w\" sizes=\"(max-width: 825px) 100vw, 825px\" \/><\/figure>\n\n\n\n<p>3. \u521b\u5efa\u4e00\u4e2a\u6d4b\u8bd5\u76ee\u5f55\u5e76\u5c06\u6d4b\u8bd5\u76ee\u5f55\u6302\u8f7d\u5230\u865a\u62df\u5185\u5b58<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"895\" height=\"401\" src=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-1.png\" alt=\"\" class=\"wp-image-913\" srcset=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-1.png 895w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-1-300x134.png 300w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-1-768x344.png 768w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-1-600x269.png 600w\" sizes=\"(max-width: 895px) 100vw, 895px\" \/><\/figure>\n\n\n\n<ol start=\"4\"><li>\u5c0610M\u7684\u6587\u4ef6\u591a\u6b21\u4f20\u5165\uff0c \u89c2\u5bdf\u5185\u5b58\u53d8\u5316<\/li><\/ol>\n\n\n\n<p>(1) \u672a\u64cd\u4f5c\u524d\u7684\u5185\u5b58 free \u7684\u5927\u5c0f\u3001buff\/cache \u7684\u5927\u5c0f<\/p>\n\n\n\n<p>(2) \u4e09\u6b21\u62f7\u8d1d10M\u7684\u6587\u4ef6\u8fdb\u6302\u8f7d\u7684\u76ee\u5f55\u65f6 free \u7684\u5927\u5c0f\u53d8\u5316\uff0cbuff\/cache \u7684\u5927\u5c0f\u53d8\u5316<\/p>\n\n\n\n<p>(3) \u5220\u9664\u6389\u4e4b\u524d\u62f7\u8d1d\u7684\u4e09\u4e2a10M\u6587\u4ef6\u4e4b\u540e free \u7684\u5927\u5c0f\u53d8\u5316, buff\/cache \u7684\u5927\u5c0f\u53d8\u5316<br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"895\" height=\"579\" src=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-2.png\" alt=\"\" class=\"wp-image-914\" srcset=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-2.png 895w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-2-300x194.png 300w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-2-768x497.png 768w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/20200426144236555-2-600x388.png 600w\" sizes=\"(max-width: 895px) 100vw, 895px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u7efc\u4e0a:<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code> ramfs \u4f7f\u7528\u65f6\uff0c \u65e0\u8bba\u8bbe\u7f6e\u7684\u5927\u5c0f\u4e3a\u591a\u5927\uff0c \u5728\u5185\u5b58\u5145\u8db3\u7684\u60c5\u51b5\u4e0b\uff0c \u662f\u53ef\u4ee5\u65e0\u9650\u653e\u7f6e\u6587\u4ef6\u7684, \u672c\u4f8b\u4e2d\u8bbe\u7f6e\u5927\u5c0f\u4e3a1M\uff0c \u653e\u7f6e\u6587\u4ef6\u603b\u5927\u5c0f\u4e3a30M, \u4ee5\u6b64\u53ef\u89c1\uff0c \u4f7f\u7528\u5927\u5c0f\u7684\u7ba1\u7406\u9700\u8981\u81ea\u884c\u63a7\u5236...<\/code><\/pre>\n\n\n\n<p>Note:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code> \u53e6\u5916\u672c\u4eba\u8fd8\u8bd5\u8fc7\n\n  (1)  \u8f93\u5165\u5927\u4e8e\u5185\u5b58\u7684\u6587\u4ef6\uff0c \u7ed3\u679c\u7cfb\u7edf\u65e0\u54cd\u5e94\u4e86\uff0c \u4f46\u662fIP\u8fd8\u662f\u80fd\u591f\u626b\u63cf\u5230\n\n  (2) \u5f53\u4f7f\u7528\u8fc7\u7a0b\u4e2d available \u8fd8\u53ef\u4ee5\u88ab \u5e94\u7528\u7a0b\u5e8f \u4f7f\u7528\u7684\u7269\u7406\u5185\u5b58\u5927\u5c0f \u4e00\u76f4\u6ca1\u53d8\u5316\u8fc7\uff0c \u5f53free\u964d\u4e3a0\u65f6available\u5f00\u59cb\u53d1\u751f\u53d8\u5316, \u5e76\u4e14\u9010\u6b65\u964d\u4e3a0\u65f6\u7cfb\u7edf\u65e0\u54cd\u5e94<\/code><\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"slide-text-bg2\">\n<h3>\u4e00\u3001\u7b80\u4ecb: sudo mount -t <\/h3>\n<\/div>\n<div class=\"flex-btn-div\"><a href=\"http:\/\/www.recologypower.com:9080\/?p=911\" class=\"btn1 flex-btn\">\u9605\u8bfb\u66f4\u591a<\/a><\/div>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[116],"tags":[],"_links":{"self":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/911"}],"collection":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=911"}],"version-history":[{"count":2,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/911\/revisions"}],"predecessor-version":[{"id":935,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/911\/revisions\/935"}],"wp:attachment":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=911"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}