{"id":236,"date":"2011-11-25T13:21:49","date_gmt":"2011-11-25T05:21:49","guid":{"rendered":"http:\/\/ykyi.net\/?p=236"},"modified":"2011-11-25T13:21:49","modified_gmt":"2011-11-25T05:21:49","slug":"initramfs-%e5%92%8c-initrd-%e7%9a%84%e5%8c%ba%e5%88%ab-2","status":"publish","type":"post","link":"https:\/\/ykyi.net\/?p=236","title":{"rendered":"initramfs \u548c initrd \u7684\u533a\u522b"},"content":{"rendered":"<p><span style=\"font-size:14px;\">Linux 2.6\u5185\u6838\u5f15\u5165\u4e86\u4e00\u4e2a\u65b0\u7684feature\u53eb\u505ainitramfs\u3002\u4e0einitrd\u76f8\u6bd4,initramfs\u6709\u51e0\u4e2a\u597d\u5904\u3002<br \/>\n\tinitrd\u6a21\u62df\u4e00\u4e2a\u78c1\u76d8(\u8fd9\u5c31\u662f\u5b83\u7684\u540d\u5b57\u7684\u7531\u6765\uff0cinitramdisk\u6216initrd)\u3002\u6a21\u62df\u78c1\u76d8\u4e5f\u5c31\u540c\u65f6\u5f15\u5165\u4e86Linux\u7684\u5757IO\u5b50\u7cfb\u7edf\u7684\u5f00\u9500\uff0c\u6bd4\u5982\u7f13\u5b58(caching)\uff0c\u800cinitramfs\u4ece\u6839\u672c\u4e0a\u628acache\u4e5f\u88c5\u8f7d(mounted)\u6210filesystem(\u56e0\u6b64\u53eb\u505ainitramfs).<\/span><\/p>\n<p><span style=\"font-size:14px;\">Initramfs\u5efa\u7acb\u5728page cahce\u4e4b\u4e0a\uff0c\u548cpage cache\u4e00\u6837\uff0c\u4f1a\u52a8\u6001\u5730\u81ea\u52a8\u589e\u957f\u548c\u7f29\u51cf\u5c3a\u5bf8\u6765\u51cf\u5165\u5185\u5b58\u7684\u4f7f\u7528\u91cf\uff0c\u800cinitrd\u505a\u4e0d\u5230\u8fd9\u70b9\u3002<br \/>\n\t\u53e6\u5916\uff0c\u4e0d\u50cfinitrd\u9700\u8981\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8(filesystem driver)\u7684\u652f\u6301\uff0c\u6bd4\u5982EXT2 driver\uff0c\u5982\u679c\u4f60\u7684initrd\u4f7f\u7528ext2\u3002\u800cinitramfs\u5219\u4e0d\u9700\u8981\u6587\u4ef6\u7cfb\u7edf\u7684\u652f\u6301\uff0cinitramfs\u7684\u5b9e\u73b0\u4ee3\u7801\u5f88\u7b80\u5355\uff0c\u53ea\u662f\u57fa\u4e8epage cache\u7684\u7b80\u5355\u4e00\u5c42\u3002<\/span><\/p>\n<p><span style=\"font-size:14px;\">copyright ykyi.net<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux 2.6\u5185\u6838\u5f15\u5165\u4e86\u4e00\u4e2a\u65b0\u7684feature\u53eb\u505ainitramfs\u3002\u4e0einitrd\u76f8\u6bd4,initramfs\u6709\u51e0\u4e2a\u597d\u5904\u3002 initrd\u6a21\u62df\u4e00\u4e2a\u78c1\u76d8(\u8fd9\u5c31\u662f\u5b83\u7684\u540d\u5b57\u7684\u7531\u6765\uff0cinitramdisk\u6216initrd)\u3002\u6a21\u62df\u78c1\u76d8\u4e5f\u5c31\u540c\u65f6\u5f15\u5165\u4e86Linux\u7684\u5757IO\u5b50\u7cfb\u7edf\u7684\u5f00\u9500\uff0c\u6bd4\u5982\u7f13\u5b58(caching)\uff0c\u800cinitramfs\u4ece\u6839\u672c\u4e0a\u628acache\u4e5f\u88c5\u8f7d(mounted)\u6210filesystem(\u56e0\u6b64\u53eb\u505ainitramfs). Initramfs\u5efa\u7acb\u5728page cahce\u4e4b\u4e0a\uff0c\u548cpage cache\u4e00\u6837\uff0c\u4f1a\u52a8\u6001\u5730\u81ea\u52a8\u589e\u957f\u548c\u7f29\u51cf\u5c3a\u5bf8\u6765\u51cf\u5165\u5185\u5b58\u7684\u4f7f\u7528\u91cf\uff0c\u800cinitrd\u505a\u4e0d\u5230\u8fd9\u70b9\u3002 \u53e6\u5916\uff0c\u4e0d\u50cfinitrd\u9700\u8981\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8(filesystem driver)\u7684\u652f\u6301\uff0c\u6bd4\u5982EXT2 driver\uff0c\u5982\u679c\u4f60\u7684initrd\u4f7f\u7528ext2\u3002\u800cinitramfs\u5219\u4e0d\u9700\u8981\u6587\u4ef6\u7cfb\u7edf\u7684\u652f\u6301\uff0cinitramfs\u7684\u5b9e\u73b0\u4ee3\u7801\u5f88\u7b80\u5355\uff0c\u53ea\u662f\u57fa\u4e8epage cache\u7684\u7b80\u5355\u4e00\u5c42\u3002 copyright ykyi.net<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,7],"tags":[51,52],"class_list":["post-236","post","type-post","status-publish","format-standard","hentry","category-tech_articles","category-unix_linux","tag-linux-2","tag-linux-kernel"],"_links":{"self":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts\/236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=236"}],"version-history":[{"count":0,"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts\/236\/revisions"}],"wp:attachment":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}