{"id":48328,"date":"2025-07-30T11:37:36","date_gmt":"2025-07-30T03:37:36","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/48328.html"},"modified":"2025-07-30T11:37:36","modified_gmt":"2025-07-30T03:37:36","slug":"%e4%bd%bf%e7%94%a8df%e5%92%8c%e9%ab%98%e6%95%88%e5%ae%9a%e4%bd%8d%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%a3%81%e7%9b%98%e5%8d%a0%e7%94%a8%e6%83%85%e5%86%b5","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/48328.html","title":{"rendered":"\u4f7f\u7528df\u548c\u9ad8\u6548\u5b9a\u4f4d\u670d\u52a1\u5668\u78c1\u76d8\u5360\u7528\u60c5\u51b5"},"content":{"rendered":"<h4>&#x1f4ca; \u4e00\u3001\u547d\u4ee4\u57fa\u7840&#xff1a;\u6838\u5fc3\u529f\u80fd\u4e0e\u5b9a\u4f4d<\/h4>\n<li>\n<p>df&#xff08;Disk Free&#xff09;<\/p>\n<ul>\n<li>\u529f\u80fd&#xff1a;\u663e\u793a\u6587\u4ef6\u7cfb\u7edf\u7ea7\u522b\u7684\u78c1\u76d8\u7a7a\u95f4\u4f7f\u7528\u60c5\u51b5&#xff0c;\u5305\u62ec\u603b\u5bb9\u91cf\u3001\u5df2\u7528\u7a7a\u95f4\u3001\u53ef\u7528\u7a7a\u95f4\u3001\u4f7f\u7528\u7387\u767e\u5206\u6bd4\u53ca\u6302\u8f7d\u70b9\u3002<\/li>\n<li>\u9002\u7528\u573a\u666f&#xff1a;\u5feb\u901f\u68c0\u67e5\u78c1\u76d8\u5206\u533a\u662f\u5426\u7a7a\u95f4\u4e0d\u8db3&#xff0c;\u4f8b\u5982\u76d1\u63a7\u6839\u5206\u533a&#xff08;\/&#xff09;\u6216\u6570\u636e\u76d8&#xff08;\/data&#xff09;\u7684\u5269\u4f59\u7a7a\u95f4\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>du&#xff08;Disk Usage&#xff09;<\/p>\n<ul>\n<li>\u529f\u80fd&#xff1a;\u7edf\u8ba1\u76ee\u5f55\u6216\u6587\u4ef6\u7ea7\u522b\u7684\u78c1\u76d8\u5360\u7528\u7a7a\u95f4&#xff0c;\u652f\u6301\u9012\u5f52\u8ba1\u7b97\u5b50\u76ee\u5f55\u3002<\/li>\n<li>\u9002\u7528\u573a\u666f&#xff1a;\u5b9a\u4f4d\u5927\u6587\u4ef6\/\u5927\u76ee\u5f55&#xff08;\u5982\u65e5\u5fd7\u76ee\u5f55\/var\/log&#xff09;&#xff0c;\u5206\u6790\u5b58\u50a8\u6d88\u8017\u6765\u6e90\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h4>&#x1f6e0;\ufe0f \u4e8c\u3001\u547d\u4ee4\u8be6\u89e3&#xff1a;\u9009\u9879\u4e0e\u793a\u4f8b<\/h4>\n<h5>1. df\u547d\u4ee4\u5e38\u7528\u9009\u9879\u53ca\u793a\u4f8b<\/h5>\n<table>\n<tr>\u9009\u9879\u4f5c\u7528\u793a\u4f8b\u547d\u4ee4\u8f93\u51fa\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>-h<\/td>\n<td>\u4eba\u7c7b\u53ef\u8bfb\u683c\u5f0f&#xff08;KB\/MB\/GB&#xff09;<\/td>\n<td>df -h<\/td>\n<td>\u663e\u793a\u6613\u8bfb\u7684\u78c1\u76d8\u4f7f\u7528\u60c5\u51b5<\/td>\n<\/tr>\n<tr>\n<td>-T<\/td>\n<td>\u663e\u793a\u6587\u4ef6\u7cfb\u7edf\u7c7b\u578b&#xff08;\u5982ext4\u3001xfs&#xff09;<\/td>\n<td>df -T \/home<\/td>\n<td>\u8f93\u51fa\u5305\u542b\u6587\u4ef6\u7cfb\u7edf\u7c7b\u578b\u7684\u5206\u533a\u4fe1\u606f<\/td>\n<\/tr>\n<tr>\n<td>-i<\/td>\n<td>\u663e\u793ainode\u4f7f\u7528\u60c5\u51b5<\/td>\n<td>df -i<\/td>\n<td>\u68c0\u67e5inode\u662f\u5426\u8017\u5c3d&#xff08;\u5c0f\u6587\u4ef6\u8fc7\u591a\u65f6\u5e38\u89c1&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>&#8211;total<\/td>\n<td>\u663e\u793a\u6240\u6709\u6587\u4ef6\u7cfb\u7edf\u7684\u603b\u8ba1<\/td>\n<td>df -h &#8211;total<\/td>\n<td>\u672b\u5c3e\u6c47\u603b\u6240\u6709\u5206\u533a\u7684\u7a7a\u95f4\u4f7f\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5178\u578b\u8f93\u51fa&#xff1a;<\/p>\n<p>$ <span class=\"token function\">df<\/span> -hT<br \/>\nFilesystem     Type  Size  Used Avail Use% Mounted on<br \/>\n\/dev\/sda1      ext4   20G   15G  <span class=\"token number\">4<\/span>.0G  <span class=\"token number\">79<\/span>% \/<br \/>\n\/dev\/sdb1      xfs   100G   60G   40G  <span class=\"token number\">60<\/span>% \/data<\/p>\n<hr \/>\n<h5>2. du\u547d\u4ee4\u5e38\u7528\u9009\u9879\u53ca\u793a\u4f8b<\/h5>\n<table>\n<tr>\u9009\u9879\u4f5c\u7528\u793a\u4f8b\u547d\u4ee4\u8f93\u51fa\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>-h<\/td>\n<td>\u4eba\u7c7b\u53ef\u8bfb\u683c\u5f0f<\/td>\n<td>du -h ~\/Documents<\/td>\n<td>\u663e\u793a\u76ee\u5f55\u4e0b\u5404\u6587\u4ef6\/\u5b50\u76ee\u5f55\u5927\u5c0f<\/td>\n<\/tr>\n<tr>\n<td>-s<\/td>\n<td>\u4ec5\u663e\u793a\u6c47\u603b\u503c&#xff08;\u4e0d\u5c55\u5f00\u5b50\u76ee\u5f55&#xff09;<\/td>\n<td>du -sh \/var\/log<\/td>\n<td>\u8f93\u51fa\u76ee\u5f55\u603b\u5927\u5c0f&#xff08;\u59821.2G \/var\/log&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>&#8211;max-depth&#061;N<\/td>\n<td>\u9650\u5236\u9012\u5f52\u6df1\u5ea6<\/td>\n<td>du -h &#8211;max-depth&#061;1 \/usr<\/td>\n<td>\u4ec5\u663e\u793a\/usr\u4e0b\u4e00\u7ea7\u5b50\u76ee\u5f55\u5927\u5c0f<\/td>\n<\/tr>\n<tr>\n<td>-a<\/td>\n<td>\u5305\u62ec\u6587\u4ef6\u5728\u5185\u7684\u6240\u6709\u9879<\/td>\n<td>&#096;du -ah \/tmp<\/td>\n<td>sort -rh&#096;<\/td>\n<\/tr>\n<tr>\n<td>-c<\/td>\n<td>\u663e\u793a\u603b\u8ba1<\/td>\n<td>du -ch *.log<\/td>\n<td>\u8ba1\u7b97\u6240\u6709.log\u6587\u4ef6\u603b\u5927\u5c0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5178\u578b\u573a\u666f&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u67e5\u627e\u5f53\u524d\u76ee\u5f55\u4e0b\u5360\u7528\u6700\u5927\u7684\u524d5\u4e2a\u76ee\u5f55<\/span><br \/>\n$ <span class=\"token function\">du<\/span> -h &#8211;max-depth<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">sort<\/span> -rh <span class=\"token operator\">|<\/span> <span class=\"token function\">head<\/span> -n <span class=\"token number\">5<\/span><br \/>\n12G    .\/database<br \/>\n<span class=\"token number\">8<\/span>.4G   .\/logs<br \/>\n<span class=\"token number\">3<\/span>.2G   .\/backups<br \/>\n<span class=\"token number\">1<\/span>.1G   .\/downloads<br \/>\n24G    <span class=\"token builtin class-name\">.<\/span>  <span class=\"token comment\"># \u5f53\u524d\u76ee\u5f55\u603b\u8ba1<\/span><\/p>\n<hr \/>\n<h4>\u2696\ufe0f \u4e09\u3001\u6838\u5fc3\u533a\u522b&#xff1a;df vs du<\/h4>\n<table>\n<tr>\u7ef4\u5ea6dfdu\u539f\u56e0\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>\u4f5c\u7528\u8303\u56f4<\/td>\n<td>\u6587\u4ef6\u7cfb\u7edf\u6574\u4f53&#xff08;\u5206\u533a\/\u6302\u8f7d\u70b9&#xff09;<\/td>\n<td>\u5177\u4f53\u76ee\u5f55\u6216\u6587\u4ef6<\/td>\n<td>df\u8bfb\u53d6\u6587\u4ef6\u7cfb\u7edf\u5143\u6570\u636e&#xff1b;du\u904d\u5386\u6587\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>\u8f93\u51fa\u5185\u5bb9<\/td>\n<td>\u603b\u5bb9\u91cf\u3001\u53ef\u7528\u7a7a\u95f4\u3001\u4f7f\u7528\u7387\u767e\u5206\u6bd4<\/td>\n<td>\u76ee\u5f55\/\u6587\u4ef6\u7684\u5b9e\u9645\u5360\u7528\u7a7a\u95f4<\/td>\n<td>df\u5173\u6ce8\u5269\u4f59\u7a7a\u95f4&#xff1b;du\u5173\u6ce8\u5df2\u7528\u7a7a\u95f4<\/td>\n<\/tr>\n<tr>\n<td>\u6027\u80fd\u5f71\u54cd<\/td>\n<td>\u4f4e&#xff08;\u76f4\u63a5\u8bfb\u53d6\u5185\u6838\u7f13\u5b58&#xff09;<\/td>\n<td>\u9ad8&#xff08;\u9700\u9012\u5f52\u904d\u5386\u6587\u4ef6\u6811&#xff09;<\/td>\n<td>\u5927\u76ee\u5f55\u4e0bdu\u53ef\u80fd\u6d88\u8017\u8f83\u591aI\/O\u8d44\u6e90<\/td>\n<\/tr>\n<tr>\n<td>\u4e0d\u4e00\u81f4\u573a\u666f<\/td>\n<td>\u663e\u793a100%\u5df2\u7528&#xff0c;\u4f46du\u7edf\u8ba1\u503c\u66f4\u5c11<\/td>\n<td>\u7edf\u8ba1\u503c\u5c0f\u4e8edf\u7684\u5df2\u7528\u7a7a\u95f4<\/td>\n<td>\u6587\u4ef6\u88ab\u5220\u9664\u4f46\u672a\u91ca\u653e&#xff08;\u8fdb\u7a0b\u4ecd\u5360\u7528\u53e5\u67c4&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&#x1f4a1; \u5173\u952e\u5dee\u5f02\u793a\u4f8b&#xff1a;<br \/>\n\u82e5rm\u5220\u9664\u4e00\u4e2a\u5927\u6587\u4ef6\u540e&#xff0c;du\u7edf\u8ba1\u503c\u7acb\u5373\u51cf\u5c11&#xff0c;\u4f46df\u663e\u793a\u7a7a\u95f4\u672a\u91ca\u653e\u2014\u2014\u56e0\u6587\u4ef6\u88ab\u8fdb\u7a0b\u5360\u7528&#xff08;\u53ef\u901a\u8fc7lsof | grep deleted\u5b9a\u4f4d\u8fdb\u7a0b\u5e76\u91cd\u542f\u91ca\u653e&#xff09;\u3002<\/p>\n<hr \/>\n<h4>&#x1f50d; \u56db\u3001\u5178\u578b\u5e94\u7528\u573a\u666f<\/h4>\n<h5>1. \u78c1\u76d8\u7a7a\u95f4\u4e0d\u8db3\u6392\u67e5<\/h5>\n<ul>\n<li>\u6b65\u9aa41&#xff1a;\u7528df -h\u5b9a\u4f4d\u6ee1\u76d8\u7684\u5206\u533a&#xff08;\u5982\/\u5206\u533a\u4f7f\u7528\u738795%&#xff09;\u3002<\/li>\n<li>\u6b65\u9aa42&#xff1a;\u7528du -sh \/* &#8211;max-depth&#061;1\u68c0\u67e5\u6839\u76ee\u5f55\u4e0b\u5404\u5b50\u76ee\u5f55\u5927\u5c0f&#xff0c;\u627e\u5230\u6700\u5927\u5360\u7528&#xff08;\u5982\/var&#xff09;\u3002<\/li>\n<li>\u6b65\u9aa43&#xff1a;\u9010\u5c42\u6df1\u5165\u5206\u6790&#xff1a;du -h &#8211;max-depth&#061;1 \/var \u2192 du -h \/var\/log | sort -rh\u3002<\/li>\n<\/ul>\n<h5>2. Inode\u8017\u5c3d\u95ee\u9898<\/h5>\n<ul>\n<li>\u73b0\u8c61&#xff1a;\u521b\u5efa\u6587\u4ef6\u5931\u8d25&#xff0c;\u4f46df -h\u663e\u793a\u7a7a\u95f4\u5145\u8db3\u3002<\/li>\n<li>\u89e3\u51b3&#xff1a;df -i\u68c0\u67e5inode\u4f7f\u7528\u7387&#xff0c;\u82e5100%\u5219\u6e05\u7406\u5c0f\u6587\u4ef6&#xff08;\u5982\u4e34\u65f6\u6587\u4ef6\u3001\u7f13\u5b58&#xff09;\u3002<\/li>\n<\/ul>\n<h5>3. \u81ea\u52a8\u5316\u76d1\u63a7\u811a\u672c<\/h5>\n<p><span class=\"token comment\"># \u78c1\u76d8\u7a7a\u95f4\u8d85\u8fc790%\u65f6\u90ae\u4ef6\u544a\u8b66<\/span><br \/>\n<span class=\"token assign-left variable\">THRESHOLD<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token number\">90<\/span><br \/>\n<span class=\"token assign-left variable\">USAGE<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token variable\"><span class=\"token variable\">$(<\/span><span class=\"token function\">df<\/span> \/ <span class=\"token operator\">|<\/span> <span class=\"token function\">tail<\/span> -1 <span class=\"token operator\">|<\/span> <span class=\"token function\">awk<\/span> <span class=\"token string\">&#039;{print <span class=\"token variable\">$5<\/span>}&#039;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">sed<\/span> <span class=\"token string\">&#039;s\/%\/\/&#039;<\/span><span class=\"token variable\">)<\/span><\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">[<\/span> <span class=\"token string\">&#034;<span class=\"token variable\">$USAGE<\/span>&#034;<\/span> -ge <span class=\"token string\">&#034;<span class=\"token variable\">$THRESHOLD<\/span>&#034;<\/span> <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">then<\/span><br \/>\n    <span class=\"token builtin class-name\">echo<\/span> <span class=\"token string\">&#034;\u8b66\u544a&#xff1a;\u6839\u5206\u533a\u4f7f\u7528\u7387 <span class=\"token variable\">${USAGE}<\/span>%&#034;<\/span> <span class=\"token operator\">|<\/span> mail -s <span class=\"token string\">&#034;\u78c1\u76d8\u544a\u8b66&#034;<\/span> admin&#064;example.com<br \/>\n<span class=\"token keyword\">fi<\/span><\/p>\n<hr \/>\n<h4>&#x1f9e9; \u4e94\u3001\u547d\u4ee4\u7ec4\u5408\u6280\u5de7<\/h4>\n<li>\u5feb\u901f\u5b9a\u4f4d\u5927\u6587\u4ef6<span class=\"token function\">du<\/span> -ah \/ <span class=\"token operator\">|<\/span> <span class=\"token function\">sort<\/span> -rh <span class=\"token operator\">|<\/span> <span class=\"token function\">head<\/span> -n <span class=\"token number\">20<\/span>  <span class=\"token comment\"># \u5168\u76d8\u67e5\u627e\u6700\u5927\u768420\u4e2a\u6587\u4ef6<\/span>\n<\/li>\n<li>\u6392\u9664\u7279\u5b9a\u76ee\u5f55<span class=\"token function\">du<\/span> -h &#8211;exclude<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;*.cache&#034;<\/span> &#8211;max-depth<span class=\"token operator\">&#061;<\/span><span class=\"token number\">2<\/span>  <span class=\"token comment\"># \u5ffd\u7565.cache\u76ee\u5f55<\/span>\n<\/li>\n<li>\u8de8\u6587\u4ef6\u7cfb\u7edf\u7edf\u8ba1<span class=\"token function\">du<\/span> -x \/  <span class=\"token comment\"># \u8df3\u8fc7\u5176\u4ed6\u6587\u4ef6\u7cfb\u7edf&#xff08;\u5982NFS\u6302\u8f7d\u70b9&#xff09;<\/span>\n<\/li>\n<hr \/>\n<h4>&#x1f48e; \u603b\u7ed3<\/h4>\n<ul>\n<li>df&#xff1a;\u76d1\u63a7\u5206\u533a\u6574\u4f53\u7a7a\u95f4&#xff0c;\u7528\u4e8e\u9884\u9632\u78c1\u76d8\u8017\u5c3d\u3002<\/li>\n<li>du&#xff1a;\u5206\u6790\u5177\u4f53\u5b58\u50a8\u6d88\u8017\u6765\u6e90&#xff0c;\u7528\u4e8e\u6e05\u7406\u5927\u6587\u4ef6\/\u76ee\u5f55\u3002<\/li>\n<li>\u9ec4\u91d1\u7ec4\u5408&#xff1a;<span class=\"token function\">df<\/span> -h \u2192 \u5b9a\u4f4d\u95ee\u9898\u5206\u533a \u2192 <span class=\"token function\">du<\/span> &#8211;max-depth\u9010\u5c42\u6392\u67e5 \u2192 \u6e05\u7406\u76ee\u6807\n<\/li>\n<\/ul>\n<p>\u26a0\ufe0f 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