{"id":748,"date":"2023-01-07T00:05:42","date_gmt":"2023-01-06T16:05:42","guid":{"rendered":"https:\/\/www.orztip.com\/?p=748&#038;article_title="},"modified":"2023-01-07T00:08:38","modified_gmt":"2023-01-06T16:08:38","slug":"linux-swap-space-use-swap-file-vs-swap-partition","status":"publish","type":"post","link":"https:\/\/www.orztip.com\/?p=748&article_title=linux-swap-space-use-swap-file-vs-swap-partition","title":{"rendered":"\u5728Linux\u521b\u5efa\u548c\u4f7f\u7528swap\u6587\u4ef6\u4ee5\u66ff\u4ee3swap\u5206\u533a"},"content":{"rendered":"\n<p>Linux\u4e2dSwap Space\uff08\u4ea4\u6362\u7a7a\u95f4\uff09\u6982\u5ff5\u548cWindows\u7684\u865a\u62df\u5185\u5b58\u76f8\u4f3c\uff0c\u5373\u628a\u4e00\u90e8\u5206\u786c\u76d8\u7a7a\u95f4\u5212\u5206\u51fa\u6765\u4f5c\u4e3a\u865a\u62df\u5185\u5b58\u4f7f\u7528\uff0c\u5f53\u5185\u5b58\u5bb9\u91cf\u4e0d\u8db3\u65f6\u5019\u5c31\u4f1a\u4f7f\u7528\u5b83\u3002<\/p>\n\n\n\n<p>\u4e00\u822cLinux\u53d1\u884c\u7248\u4f1a\u5728\u78c1\u76d8\u4e13\u95e8\u5212\u5206\u5e76\u683c\u5f0f\u5316\u4e00\u4e2a\u4ea4\u6362\u5206\u533a\uff08Swap Partition\uff0c\u4e0b\u79f0swap\u5206\u533a\uff09\u4f7f\u7528\uff0c\u597d\u5904\u662f\u4f5c\u4e3aswap space\u65f6\u78c1\u76d8\u7a7a\u95f4\u8fde\u7eed\uff0c\u574f\u5904\u662f\u540e\u671f\u5206\u533a\u8c03\u6574\u5927\u5c0f\u590d\u6742\u3002<\/p>\n\n\n\n<p>\u4e0d\u8fc7Linux\u5176\u5b9e\u4e5f\u652f\u6301\u521b\u5efa\u548c\u4f7f\u7528\u4ea4\u6362\u6587\u4ef6\uff08swap file\uff0c\u4e0b\u79f0swap\u6587\u4ef6\uff09\u6765\u4f5c\u4e3aswap space\uff08Windows pagefile.sys\uff1a\u8fd9\u4e2a\u6211\u719f\uff09\u3002Ubuntu 17.04\u5f00\u59cb\u4e5f\u9ed8\u8ba4\u4f7f\u7528swap\u6587\u4ef6\u800c\u975eswap\u5206\u533a\u3002\u597d\u5904\u662fswap\u6587\u4ef6\u53ef\u4ee5\u968f\u65f6\u4ee5\u4efb\u610f\u5927\u5c0f\u521b\u5efa\u548c\u9500\u6bc1\u591a\u4e2a\uff0c\u574f\u5904\u662f\u6548\u7387\u76f8\u5bf9\u5dee\u4e00\u4e9b\u30102\u3011\uff08\u4f46\u5728ssd\u65f6\u4ee3\u5df2\u7ecf\u4e0d\u660e\u663e\uff09\uff0c\u53e6\u5916\u6d4b\u8bd5\u8986\u76d6\u5ea6\u660e\u663e\u4e0d\u53caswap\u5206\u533a\uff0c5.12-rc1\u65f6\u751a\u81f3\u51fa\u73b0\u4e86\u5f00\u542fswap\u6587\u4ef6\u540e\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u95ee\u9898\u30101\u3011\u30106\u3011\uff0c\u4e0d\u8fc7\u73b0\u5728\u5df2\u7ecf\u4fee\u590d\u4e86\u3002<\/p>\n\n\n\n<p>\u53e6\u5916\u5982\u679c\u8981\u4f7f\u7528\u4f11\u7720\uff08Hibernate\uff09\u529f\u80fd\uff0c\u4e5f\u4e0d\u5efa\u8bae\u4f7f\u7528swap\u6587\u4ef6\uff0c\u6700\u597d\u4f7f\u7528swap\u5206\u533a\u30103\u3011\u3002\u4f7f\u7528Btrfs\u6587\u4ef6\u683c\u5f0f\u4e5f\u4e0d\u5efa\u8bae\u4f7f\u7528swap\u6587\u4ef6\uff0c\u5c24\u5176\u662flinux\u5185\u68385.0\u4ee5\u4e0b\u7981\u6b62\u4f7f\u7528\uff0c\u5426\u5219\u4f1a\u4ea7\u751f\u6570\u636e\u4e22\u5931\u95ee\u9898\u30104\u3011\u30105\u3011\u3002<\/p>\n\n\n\n<p>\u90a3\u4e48\u5982\u4f55\u521b\u5efa\u548c\u6302\u8f7dswap\u6587\u4ef6\u5462\uff1f<\/p>\n\n\n\n<p>\u5907\u6ce8\uff1a\u4ee5\u4e0b\u547d\u4ee4\u884c\u5747\u9700\u8981root\u8eab\u4efd<\/p>\n\n\n\n<p>\u7b2c\u4e00\u6b65\uff0c\u521b\u5efaswap\u6587\u4ef6\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f\uff1a\u4f7f\u7528dd\u901f\u5ea6\u8f83\u6162\uff0c\u4e00\u822c\u4f7f\u7528fallocate\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u5047\u8bbe\u5728\/root\u76ee\u5f55\u521b\u5efa32GB\u7684swapfile\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>fallocate -l 32G \/root\/swapfile<\/code><\/pre>\n\n\n\n<p>\u7b2c\u4e8c\u6b65\uff0c\u66f4\u6539swap\u6587\u4ef6\u6743\u9650\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>chown root:root \/root\/swapfile\nchmod 0600 \/root\/swapfile<\/code><\/pre>\n\n\n\n<p>\u7b2c\u4e09\u6b65\uff0c\u683c\u5f0f\u5316swap\u6587\u4ef6<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mkswap \/root\/swapfile<\/code><\/pre>\n\n\n\n<p>\u7b2c\u56db\u6b65\uff0c\u542f\u7528swap\u6587\u4ef6<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>swapon \/root\/swapfile<\/code><\/pre>\n\n\n\n<p>\u7b2c\u4e94\u6b65\uff0c\u9a8c\u8bc1swap\u6587\u4ef6\u662f\u5426\u542f\u7528<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>swapon --show<\/code><\/pre>\n\n\n\n<p>\u6b63\u5e38\u7684\u8bdd\u4f1a\u770b\u5230\u5982\u4e0b\u5185\u5bb9\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>NAME TYPE SIZE USED PRIO\n\/root\/swapfile file 32G 0B -2<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u60f3\u5728\u5f00\u673a\u65f6\u6301\u4e45\u5316\u8f7d\u5165\uff0c\u5219\u9700\u8981\u4fee\u6539\/etc\/fstab\u6587\u4ef6\uff0c\u7136\u540e\u52a0\u5165\u5982\u4e0b\u6302\u8f7d\u6761\u76ee\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/root\/swapfile none swap sw 0 0<\/code><\/pre>\n\n\n\n<p>\u4fee\u6539\/etc\/fstab\u6587\u4ef6\u540e\u53ef\u4ee5\u7528\u5982\u4e0b\u547d\u4ee4\u751f\u6548swap\u6587\u4ef6\u6302\u8f7d\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>swapon -a<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u4e0d\u60f3\u4f7f\u7528swap\u6587\u4ef6\u4e86\uff0c\u5219\u5148\u4f7f\u7528swapoff\u5378\u8f7d\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>swapoff \/root\/swapfile<\/code><\/pre>\n\n\n\n<p>\u7136\u540e\u6e05\u9664\/etc\/fstab\u6587\u4ef6\u5185\u7684\u6302\u8f7d\u6761\u76ee\uff08\u5982\u679c\u6709\uff09\uff0c\u6700\u540e\u5220\u9664\u5373\u53ef\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>rm \/root\/swapfile<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p>\u53c2\u8003\u4fe1\u606f\uff1a<\/p>\n\n\n\n<p>\u30101\u3011A warning about 5.12-rc1 [LWN.net]\uff1a<a href=\"https:\/\/lwn.net\/Articles\/848265\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/lwn.net\/Articles\/848265\/<\/a><br>\u30102\u3011<a href=\"https:\/\/askubuntu.com\/questions\/904372\/swap-partition-vs-swap-file\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/askubuntu.com\/questions\/904372\/swap-partition-vs-swap-file<\/a><br>\u30103\u3011<a href=\"https:\/\/askubuntu.com\/questions\/6769\/hibernate-and-resume-from-a-swap-file\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/askubuntu.com\/questions\/6769\/hibernate-and-resume-from-a-swap-file<\/a><br>\u30104\u3011<a href=\"https:\/\/wiki.archlinux.org\/title\/Power_management\/Suspend_and_hibernate#Hibernation_into_swap_file\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/wiki.archlinux.org\/title\/Power_management\/Suspend_and_hibernate#Hibernation_into_swap_file<\/a><br>\u30105\u3011<a href=\"https:\/\/wiki.archlinux.org\/title\/Btrfs#Swap_file\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/wiki.archlinux.org\/title\/Btrfs#Swap_file<\/a><br>\u30106\u3011<a href=\"https:\/\/www.reddit.com\/r\/linux4noobs\/comments\/mlwgk6\/swap_file_vs_swap_partition\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.reddit.com\/r\/linux4noobs\/comments\/mlwgk6\/swap_file_vs_swap_partition\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux\u4e2dSwap Space\uff08\u4ea4\u6362\u7a7a\u95f4\uff09\u6982\u5ff5\u548cWindows\u7684\u865a\u62df\u5185\u5b58\u76f8\u4f3c\uff0c\u5373\u628a\u4e00\u90e8\u5206\u786c\u76d8\u7a7a\u95f4\u5212\u5206\u51fa\u6765\u4f5c\u4e3a&hellip; <a class=\"more-link\" href=\"https:\/\/www.orztip.com\/?p=748&#038;article_title=linux-swap-space-use-swap-file-vs-swap-partition\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u5728Linux\u521b\u5efa\u548c\u4f7f\u7528swap\u6587\u4ef6\u4ee5\u66ff\u4ee3swap\u5206\u533a<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,116,6],"tags":[14],"_links":{"self":[{"href":"https:\/\/www.orztip.com\/index.php?rest_route=\/wp\/v2\/posts\/748"}],"collection":[{"href":"https:\/\/www.orztip.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.orztip.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.orztip.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.orztip.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=748"}],"version-history":[{"count":3,"href":"https:\/\/www.orztip.com\/index.php?rest_route=\/wp\/v2\/posts\/748\/revisions"}],"predecessor-version":[{"id":752,"href":"https:\/\/www.orztip.com\/index.php?rest_route=\/wp\/v2\/posts\/748\/revisions\/752"}],"wp:attachment":[{"href":"https:\/\/www.orztip.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.orztip.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=748"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.orztip.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}