{"id":2437,"date":"2025-12-09T14:44:15","date_gmt":"2025-12-09T06:44:15","guid":{"rendered":"https:\/\/www.madbull.site\/?p=2437"},"modified":"2025-12-09T14:44:15","modified_gmt":"2025-12-09T06:44:15","slug":"%e4%bf%ae%e6%94%b9crashkernel%e4%b8%ba0","status":"publish","type":"post","link":"https:\/\/www.madbull.site\/?p=2437","title":{"rendered":"\u4fee\u6539crashkernel\u4e3a0"},"content":{"rendered":"\n

\u5728 Ubuntu \u7cfb\u7edf\u4e2d\uff0ccrashkernel<\/code> \u662f\u7528\u4e8e kdump<\/strong>\uff08\u5185\u6838\u5d29\u6e83\u8f6c\u50a8\uff09\u529f\u80fd\u7684\u5185\u5b58\u9884\u7559\u53c2\u6570\u3002\u5982\u679c\u4f60\u4e0d\u9700\u8981\u5185\u6838\u5d29\u6e83\u8f6c\u50a8\u529f\u80fd\uff0c\u53ef\u4ee5\u5c06 crashkernel<\/code> \u8bbe\u7f6e\u4e3a 0<\/code> \u6216\u76f4\u63a5\u79fb\u9664\u8be5\u53c2\u6570\uff0c\u8fd9\u6837\u53ef\u4ee5\u91ca\u653e\u4e00\u90e8\u5206\u5185\u5b58\u3002<\/p>\n\n\n\n

\n\n\n\n

\u2705 \u65b9\u6cd5\uff1a\u4fee\u6539 GRUB \u914d\u7f6e\u4ee5\u7981\u7528 crashkernel<\/h2>\n\n\n\n

\u6b65\u9aa4 1\uff1a\u7f16\u8f91 GRUB \u914d\u7f6e\u6587\u4ef6<\/h3>\n\n\n\n
sudo vim \/etc\/default\/grub<\/code><\/code><\/pre>\n\n\n\n
\u627e\u5230\u8fd9\u4e00\u884c\uff08\u901a\u5e38\u9ed8\u8ba4\u5b58\u5728\u6216\u53ef\u80fd\u4e0d\u5b58\u5728\uff09\uff1a<\/p>\n\n\n\n
GRUB_CMDLINE_LINUX_DEFAULT=\"quiet splash crashkernel=...\"<\/code><\/code><\/pre>\n\n\n\n
\u6b65\u9aa4 2\uff1a\u4fee\u6539\u6216\u5220\u9664 crashkernel<\/code><\/h3>\n\n\n\n
    \n
  • \u65b9\u5f0f\u4e00\uff08\u63a8\u8350\uff09<\/strong>\uff1a\u663e\u5f0f\u8bbe\u7f6e\u4e3a 0<\/code> \uff1aGRUB_CMDLINE_LINUX_DEFAULT=\"quiet splash crashkernel=0\"<\/code><\/li>\n\n\n\n
  • \u65b9\u5f0f\u4e8c<\/strong>\uff1a\u5b8c\u5168\u5220\u9664 crashkernel=...<\/code> \u53c2\u6570\uff08\u6548\u679c\u7b49\u540c\u4e8e\u4e0d\u9884\u7559\u5185\u5b58\uff09 GRUB_CMDLINE_LINUX_DEFAULT=\"quiet splash\"<\/code><\/li>\n<\/ul>\n\n\n\n
    \n
    \ud83d\udca1 \u6ce8\u610f\uff1a\u5982\u679c\u7cfb\u7edf\u539f\u672c\u6ca1\u6709 crashkernel<\/code> \u53c2\u6570\uff0c\u5219\u65e0\u9700\u64cd\u4f5c\uff1b\u82e5\u6709\uff08\u5982 crashkernel=1G-4G:192M,4G-64G:256M<\/code>\uff09\uff0c\u8bf7\u66ff\u6362\u6216\u5220\u9664\u3002<\/p>\n<\/blockquote>\n\n\n\n
    \u6b65\u9aa4 3\uff1a\u66f4\u65b0 GRUB \u914d\u7f6e<\/h3>\n\n\n\n
    # \u5bf9\u4e8e BIOS \u7cfb\u7edf\uff08\u4f20\u7edf\uff09\u6216 UEFI \u7cfb\u7edf\u901a\u7528\uff1a\nsudo update-grub<\/code><\/pre>\n\n\n\n
    \n
    \u5728\u67d0\u4e9b Ubuntu \u7248\u672c\uff08\u5982\u4f7f\u7528 systemd-boot \u7684 ARM\/\u4e91\u955c\u50cf\uff09\uff0c\u53ef\u80fd\u9700\u8981\u5176\u4ed6\u65b9\u5f0f\uff0c\u4f46\u7edd\u5927\u591a\u6570\u684c\u9762\/\u670d\u52a1\u5668\u7248\u4f7f\u7528 GRUB\u3002<\/p>\n<\/blockquote>\n\n\n\n
    \u6b65\u9aa4 4\uff1a\u91cd\u542f\u751f\u6548<\/h3>\n\n\n\n
    sudo reboot<\/code><\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \ud83d\udd0d \u9a8c\u8bc1\u662f\u5426\u751f\u6548<\/h2>\n\n\n\n
    \u91cd\u542f\u540e\uff0c\u68c0\u67e5\u5185\u6838\u542f\u52a8\u53c2\u6570\uff1a<\/p>\n\n\n\n
    cat \/proc\/cmdline<\/code><\/code><\/pre>\n\n\n\n
    \u786e\u8ba4\u8f93\u51fa\u4e2d \u6ca1\u6709<\/strong> crashkernel=<\/code> \u6216\u663e\u793a\u4e3a crashkernel=0<\/code>\u3002<\/p>\n\n\n\n
    \u540c\u65f6\u53ef\u68c0\u67e5\u662f\u5426\u52a0\u8f7d\u4e86 kdump \u76f8\u5173\u670d\u52a1\uff1a<\/p>\n\n\n\n
    systemctl status kdump-tools   # Ubuntu \u65e7\u7248\u672c\nsystemctl status kdump         # \u8f83\u65b0\u7248\u672c\uff08\u5982 22.04+\uff09<\/code><\/pre>\n\n\n\n
    \u5982\u679c\u4e0d\u9700\u8981 kdump\uff0c\u5efa\u8bae\u4e5f\u7981\u7528\u5e76\u505c\u6b62\u8be5\u670d\u52a1\uff1a<\/p>\n\n\n\n
    sudo systemctl disable --now kdump\n# \u6216\nsudo systemctl disable --now kdump-tools<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \ud83d\udcdd \u8865\u5145\u8bf4\u660e<\/h2>\n\n\n\n
      \n
    • crashkernel=0<\/code> \u8868\u793a \u4e0d\u4e3a kdump \u9884\u7559\u4efb\u4f55\u5185\u5b58<\/strong>\uff0c\u8282\u7701\u7cfb\u7edf\u8d44\u6e90\u3002<\/li>\n\n\n\n
    • \u5982\u679c\u4f60\u4ece\u672a\u914d\u7f6e\u8fc7 kdump\uff0c\u7cfb\u7edf\u53ef\u80fd\u9ed8\u8ba4\u672a\u542f\u7528\uff0c\u4f46\u67d0\u4e9b Ubuntu \u5b89\u88c5\u955c\u50cf\uff08\u5c24\u5176\u662f\u670d\u52a1\u5668\u7248\uff09\u4f1a\u9ed8\u8ba4\u542f\u7528 crashkernel<\/code>\u3002<\/li>\n\n\n\n
    • \u4fee\u6539\u540e\u82e5\u5c06\u6765\u9700\u8981\u542f\u7528 kdump\uff0c\u53ef\u91cd\u65b0\u8bbe\u7f6e\u4e3a\u5408\u9002\u7684\u503c\uff08\u5982 crashkernel=256M<\/code>\uff09\u5e76\u5b89\u88c5 linux-crashdump<\/code> \u5305\u3002<\/li>\n<\/ul>\n\n\n\n
      \n","protected":false},"excerpt":{"rendered":"
      \u5728 Ubuntu \u7cfb\u7edf\u4e2d\uff0ccrashkernel \u662f\u7528\u4e8e kdump\uff08\u5185\u6838\u5d29\u6e83\u8f6c\u50a8\uff09\u529f\u80fd\u7684\u5185\u5b58\u9884\u7559\u53c2\u6570\u3002\u5982\u679c\u4f60 […]<\/p>\n","protected":false},"author":1,"featured_media":450,"comment_status":"open","ping_status":"open","sticky":false,"template":"wp-custom-template-my","format":"standard","meta":{"footnotes":""},"categories":[135,131],"tags":[711,712,237],"class_list":["post-2437","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux","category-131","tag-crashkernel","tag-grub","tag-linux"],"_links":{"self":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/2437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2437"}],"version-history":[{"count":1,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/2437\/revisions"}],"predecessor-version":[{"id":2438,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/2437\/revisions\/2438"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/media\/450"}],"wp:attachment":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}