{"id":1176,"date":"2021-12-07T17:40:10","date_gmt":"2021-12-07T09:40:10","guid":{"rendered":"http:\/\/dba.qishuo.xin\/?p=1176"},"modified":"2021-12-07T22:02:07","modified_gmt":"2021-12-07T14:02:07","slug":"nfs%e6%9c%8d%e5%8a%a1%e5%99%a8%e8%ae%be%e7%bd%ae%e5%8f%8amount%e5%91%bd%e4%bb%a4%e6%8c%82%e8%bd%bd","status":"publish","type":"post","link":"http:\/\/dba.qishuo.xin\/?p=1176","title":{"rendered":"NFS\u670d\u52a1\u5668\u8bbe\u7f6e\u53ca\u5ba2\u6237\u7aefmount\u6302\u8f7d"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 ez-toc-wrap-right counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-6a12290a6a332\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a12290a6a332\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#1_NFS%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%9A%84%E8%AE%BE%E5%AE%9A\" >1. NFS\u670d\u52a1\u5668\u7684\u8bbe\u5b9a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#2_%E5%90%AF%E5%8A%A8nfs%E6%9C%8D%E5%8A%A1\" >2. \u542f\u52a8nfs\u670d\u52a1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#3_%E6%9C%8D%E5%8A%A1%E7%AB%AF%E9%98%B2%E7%81%AB%E5%A2%99%E7%9A%84%E9%85%8D%E7%BD%AE\" >3. \u670d\u52a1\u7aef\u9632\u706b\u5899\u7684\u914d\u7f6e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#4_NFS%E5%AE%A2%E6%88%B7%E7%AB%AF%E7%9A%84%E6%93%8D%E4%BD%9C\" >4. NFS\u5ba2\u6237\u7aef\u7684\u64cd\u4f5c<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#41_showmount%E7%9A%84%E7%94%A8%E6%B3%95\" >4.1. showmount\u7684\u7528\u6cd5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#42_mount_nfs%E7%9B%AE%E5%BD%95\" >4.2. mount nfs\u76ee\u5f55<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#43_%E5%B0%86NFS%E8%B7%AF%E5%BE%84%E5%8A%A0%E5%85%A5%E5%88%B0etcfstab%E4%B8%AD\" >4.3. \u5c06NFS\u8def\u5f84\u52a0\u5165\u5230\/etc\/fstab\u4e2d<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#5_%E6%B5%8B%E8%AF%95NFS%E6%80%A7%E8%83%BD\" >5. \u6d4b\u8bd5NFS\u6027\u80fd<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#51_%E5%86%99%E5%85%A5%E9%80%9F%E5%BA%A6\" >5.1. \u5199\u5165\u901f\u5ea6<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#52_%E8%AF%BB%E5%87%BA%E9%80%9F%E5%BA%A6\" >5.2. \u8bfb\u51fa\u901f\u5ea6<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"http:\/\/dba.qishuo.xin\/?p=1176\/#53_%E5%85%B6%E4%BB%96\" >5.3. \u5176\u4ed6<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>\u53c2\u8003\uff1ahttps:\/\/blog.csdn.net\/kevinhg\/article\/details\/5967432<br \/>\nLinux NFS\u670d\u52a1\u5668\u7684\u5b89\u88c5\u4e0e\u914d\u7f6e\uff1ahttps:\/\/www.cnblogs.com\/mchina\/archive\/2013\/01\/03\/2840040.html<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_NFS%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%9A%84%E8%AE%BE%E5%AE%9A\"><\/span>1. NFS\u670d\u52a1\u5668\u7684\u8bbe\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>NFS\u670d\u52a1\u5668\u7684\u8bbe\u5b9a\u53ef\u4ee5\u901a\u8fc7\/etc\/exports\u8fd9\u4e2a\u6587\u4ef6\u8fdb\u884c\uff0c\u8bbe\u5b9a\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th align=\"left\">\u5206\u4eab\u76ee\u5f55<\/th>\n<th align=\"left\">\u4e3b\u673a\u540d\u79f0\u6216\u8005IP(\u53c2\u65701\uff0c\u53c2\u65702\uff09-----------------------------------------------------------------------------------------<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\">\/arm2410s<\/td>\n<td align=\"left\">\u6240\u6709\u7528\u6237\u8bbf\u95ee\uff1a&#42;(rw,sync,no&#95;root&#95;squash)<br \/>\u7279\u5b9a\u7528\u6237\u8bbf\u95ee\uff1a172.25.254.0\/24(sync) 172.25.254.226(sync,rw)  \uff08\u5141\u8bb8\u6240\u6709172.25.254\u7f51\u6bb5\u7684\u7528\u6237\u8bbf\u95ee\u76ee\u5f55\uff0c\u5141\u8bb8172.25.254.226\u4e3b\u673a\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002\uff09<\/br><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u53ef\u4ee5\u8bbe\u5b9a\u7684\u53c2\u6570\u4e3b\u8981\u6709\u4ee5\u4e0b\u8fd9\u4e9b\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th align=\"left\">\u53c2\u6570<\/th>\n<th align=\"left\">\u8bf4\u660e---------------------------------------------------------------------------<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\">rw<\/td>\n<td align=\"left\">\u53ef\u8bfb\u5199\u7684\u6743\u9650<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">ro<\/td>\n<td align=\"left\">\u53ea\u8bfb\u7684\u6743\u9650<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">no_root_squash<\/td>\n<td align=\"left\">\u767b\u5165\u5230NFS\u4e3b\u673a\u7684\u7528\u6237\u5982\u679c\u662froot\uff0c\u8be5\u7528\u6237\u5373\u62e5\u6709root\u6743\u9650<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">root_squash<\/td>\n<td align=\"left\">\u767b\u5165NFS\u4e3b\u673a\u7684\u7528\u6237\u5982\u679c\u662froot\uff0c\u8be5\u7528\u6237\u6743\u9650\u5c06\u88ab\u9650\u5b9a\u4e3a\u533f\u540d\u4f7f\u7528\u8005nobody<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">all_squash<\/td>\n<td align=\"left\">\u4e0d\u7ba1\u767b\u9646NFS\u4e3b\u673a\u7684\u7528\u6237\u662f\u4f55\u6743\u9650\u90fd\u4f1a\u88ab\u91cd\u65b0\u8bbe\u5b9a\u4e3a\u533f\u540d\u4f7f\u7528\u8005nobody<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">anonuid<\/td>\n<td align=\"left\">\u5c06\u767b\u5165NFS\u4e3b\u673a\u7684\u7528\u6237\u90fd\u8bbe\u5b9a\u6210\u6307\u5b9a\u7684user id\uff0c\u6b64ID\u5fc5\u987b\u5b58\u5728\u4e8e\/etc\/passwd\u4e2d\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">anongid<\/td>\n<td align=\"left\">\u540canonuid\uff0c\u4f46\u662f\u53d8\u6210group ID\u5c31\u662f\u4e86\uff01<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">sync<\/td>\n<td align=\"left\">\u8d44\u6599\u540c\u6b65\u5199\u5165\u5b58\u50a8\u5668\u4e2d\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">async<\/td>\n<td align=\"left\">\u8d44\u6599\u4f1a\u5148\u6682\u65f6\u5b58\u653e\u5728\u5185\u5b58\u4e2d\uff0c\u4e0d\u4f1a\u76f4\u63a5\u5199\u5165\u786c\u76d8\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">insecure<\/td>\n<td align=\"left\">\u5141\u8bb8\u4ece\u8fd9\u53f0\u673a\u5668\u8fc7\u6765\u7684\u975e\u6388\u6743\u8bbf\u95ee\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4f8b\u5982\u53ef\u4ee5\u7f16\u8f91\/etc\/exports\u4e3a\uff1a<\/p>\n<pre><code class=\"language-shell line-numbers\">\/tmp\u3000\u3000\u3000\u3000\u3000*(rw,no_root_squash)\n\/home\/public\u3000192.168.0.*(rw)\u3000\u3000 *(ro)\n\/home\/test\u3000\u3000192.168.0.100(rw)\n\/home\/linux\u3000 *.the9.com(rw,all_squash,anonuid=40,anongid=40)\n<\/code><\/pre>\n<p>\u8bbe\u5b9a\u597d\u540e\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u542f\u52a8NFS:<\/p>\n<pre><code class=\"language-shell line-numbers\">systemctl start portmap  (\u5728REDHAT\u4e2dPORTMAP\u662f\u9ed8\u8ba4\u542f\u52a8\u7684\uff09\nsystemctl start nfs\n<\/code><\/pre>\n<p>\u5982\u679c\u63d0\u793a<code>Failed to start portmap.service: Unit not found.<\/code>,\u5219\u9700\u8981\u624b\u52a8\u5b89\u88c5\u5982\u4e0b\u670d\u52a1\uff1a<\/p>\n<pre><code class=\"language-shell line-numbers\">yum install -y  nfs-utils rpcbind\nsystemctl restart rpcbind.service\nsystemctl restart nfs.service\nsystemctl enable rpcbind.service\nsystemctl enable nfs.service\n<\/code><\/pre>\n<p>exportfs\u547d\u4ee4<br \/>\n\u5982\u679c\u6211\u4eec\u5728\u542f\u52a8\u4e86NFS\u4e4b\u540e\u53c8\u4fee\u6539\u4e86\/etc\/exports\uff0c\u662f\u4e0d\u662f\u8fd8\u8981\u91cd\u65b0\u542f\u52a8nfs\u5462\uff1f\u8fd9\u4e2a\u65f6\u5019\u6211\u4eec\u5c31\u53ef\u4ee5\u7528exportfs\u547d\u4ee4\u6765\u4f7f\u6539\u52a8\u7acb\u523b\u751f\u6548\uff0c\u8be5\u547d\u4ee4\u683c\u5f0f\u5982\u4e0b\uff1a<br \/>\nexportfs [-aruv]<\/p>\n<ul>\n<li>-a \uff1a\u5168\u90e8mount\u6216\u8005unmount \/etc\/exports\u4e2d\u7684\u5185\u5bb9<\/li>\n<li>-r \uff1a\u91cd\u65b0mount \/etc\/exports\u4e2d\u5206\u4eab\u51fa\u6765\u7684\u76ee\u5f55<\/li>\n<li>-u \uff1aumount \u76ee\u5f55<\/li>\n<li>-v \uff1a\u5728 export \u7684\u65f6\u5019\uff0c\u5c06\u8be6\u7ec6\u7684\u4fe1\u606f\u8f93\u51fa\u5230\u5c4f\u5e55\u4e0a\u3002<\/li>\n<\/ul>\n<p>\u5177\u4f53\u4f8b\u5b50\uff1a<\/p>\n<pre><code class=\"language-shell line-numbers\">[root @test root]# exportfs -rv  \uff08\u5168\u90e8\u91cd\u65b0export\u4e00\u6b21\uff01\uff09\nexporting 192.168.0.100:\/home\/test\nexporting 192.168.0.*:\/home\/public\nexporting *.the9.com:\/home\/linux\nexporting *:\/home\/public\nexporting *:\/tmp\nreexporting 192.168.0.100:\/home\/test to kernel\n<\/code><\/pre>\n<p>\u5177\u4f53\u4f8b\u5b50\uff1a<\/p>\n<pre><code class=\"language-shell line-numbers\">[root @test root]#exportfs -au \uff08\u5168\u90e8\u90fd\u5378\u8f7d\u4e86\uff09\n[root @test root]# vi \/etc\/exports\n\n\/home\/soft 192.168.2.11(rw)\n[root@localhost init.d]# nfs start\n-bash: nfs: command not found\n[root@localhost init.d]# .\/nfs start\nStarting NFS services: [ OK ]\nStarting NFS quotas: [ OK ]\nStarting NFS daemon: [ OK ]\nStarting NFS mountd: [ OK ]\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"2_%E5%90%AF%E5%8A%A8nfs%E6%9C%8D%E5%8A%A1\"><\/span>2. \u542f\u52a8nfs\u670d\u52a1<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre><code class=\"language-shell line-numbers\">~]# systemctl start nfs\n~]# systemctl enable nfs\n~]# systemctl start rpcbind\n~]# systemctl enable rpcbind\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"3_%E6%9C%8D%E5%8A%A1%E7%AB%AF%E9%98%B2%E7%81%AB%E5%A2%99%E7%9A%84%E9%85%8D%E7%BD%AE\"><\/span>3. \u670d\u52a1\u7aef\u9632\u706b\u5899\u7684\u914d\u7f6e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre><code class=\"language-shell line-numbers\">firewall-cmd --permanent --add-service=nfs\nfirewall-cmd --permanent --add-service=rpc-bind\nfirewall-cmd --permanent --add-service=mountd\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"4_NFS%E5%AE%A2%E6%88%B7%E7%AB%AF%E7%9A%84%E6%93%8D%E4%BD%9C\"><\/span>4. NFS\u5ba2\u6237\u7aef\u7684\u64cd\u4f5c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"41_showmount%E7%9A%84%E7%94%A8%E6%B3%95\"><\/span>4.1. showmount\u7684\u7528\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<pre><code class=\"language-shell line-numbers\">showmout\n<\/code><\/pre>\n<ul>\n<li>-a \uff1a\u8fd9\u4e2a\u53c2\u6570\u662f\u4e00\u822c\u5728NFS SERVER\u4e0a\u4f7f\u7528\uff0c\u662f\u7528\u6765\u663e\u793a\u5df2\u7ecfmount\u4e0a\u672c\u673anfs\u76ee\u5f55\u7684cline\u673a\u5668\u3002<\/li>\n<li>-e \uff1a\u663e\u793a\u6307\u5b9a\u7684NFS SERVER\u4e0aexport\u51fa\u6765\u7684\u76ee\u5f55\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-shell line-numbers\">showmount -e 192.168.0.30\nExport list for localhost:\n\/tmp *\n\/home\/linux *.linux.org\n\/home\/public (everyone)\n\/home\/test 192.168.0.100\n<\/code><\/pre>\n<h4><span class=\"ez-toc-section\" id=\"42_mount_nfs%E7%9B%AE%E5%BD%95\"><\/span>4.2. mount nfs\u76ee\u5f55<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<pre><code class=\"language-shell line-numbers\">mount -t nfs hostname(orIP):\/directory \/mount\/point\n<\/code><\/pre>\n<p>\u5177\u4f53\u4f8b\u5b50\uff1a<\/p>\n<pre><code class=\"language-shell line-numbers\">Linux: mount -t nfs 192.168.0.1:\/tmp \/mnt\/nfs\n\n~]# showmount -e 192.168.0.169\nExport list for 192.168.0.169:\n\/home\/opt\/RHEL4U5 192.168.0.0\/255.255.252.0\nYou have new mail in \/var\/spool\/mail\/root\n\nmount -t nfs 192.168.0.169:\/home\/opt\/RHEL4U5 \/mnt\/soft\n<\/code><\/pre>\n<h4><span class=\"ez-toc-section\" id=\"43_%E5%B0%86NFS%E8%B7%AF%E5%BE%84%E5%8A%A0%E5%85%A5%E5%88%B0etcfstab%E4%B8%AD\"><\/span>4.3. \u5c06NFS\u8def\u5f84\u52a0\u5165\u5230<code>\/etc\/fstab<\/code>\u4e2d<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<pre><code class=\"language-shell line-numbers\">vim \/etc\/fstab\n# \u589e\u52a0\u5982\u4e0b\u5185\u5bb9\n192.168.0.169:\/home\/opt\/RHEL4U5       \/mnt\/soft              nfs     defaults        0 0\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"5_%E6%B5%8B%E8%AF%95NFS%E6%80%A7%E8%83%BD\"><\/span>5. \u6d4b\u8bd5NFS\u6027\u80fd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"51_%E5%86%99%E5%85%A5%E9%80%9F%E5%BA%A6\"><\/span>5.1. \u5199\u5165\u901f\u5ea6<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u5199\u5165\u4e00\u4e2a10GB\u5927\u5c0f\u7684\u6587\u4ef6<\/p>\n<pre><code class=\"language-shell line-numbers\">~]# time dd if=\/dev\/zero of=\/OraRemoteBak\/test\/10g bs=8k count=1024000\n1024000+0 records in\n1024000+0 records out\n8388608000 bytes (8.4 GB) copied, 709.468 s, 11.8 MB\/s    &lt;------- # NFS\u7684\u5199\u5165\u901f\u5ea6\uff0c\u5907\u4efd1T\u7684\u6570\u636e\u81f3\u5c11\u9700\u8981\uff1a24\u5c0f\u65f6\n\nreal    11m49.523s\nuser    0m0.107s\nsys 0m4.418s\n\n\n~]# time dd if=\/dev\/zero of=\/OraBak\/10g  bs=8k count=1024000\n1024000+0 records in\n1024000+0 records out\n8388608000 bytes (8.4 GB) copied, 3.18091 s, 2.6 GB\/s   &lt;------- # \u672c\u5730\u78c1\u76d8\u5199\u5165\u901f\u5ea6\uff0c\u5907\u4efd1T\u7684\u6570\u636e\u9700\u8981\uff1a7\u5206\u949f\n\nreal    0m3.182s\nuser    0m0.117s\nsys 0m3.065s\n<\/code><\/pre>\n<h4><span class=\"ez-toc-section\" id=\"52_%E8%AF%BB%E5%87%BA%E9%80%9F%E5%BA%A6\"><\/span>5.2. \u8bfb\u51fa\u901f\u5ea6<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<pre><code class=\"language-shell line-numbers\">~]# time dd if=\/OraRemoteBak\/test\/10g of=\/dev\/null bs=16k\n\n512000+0 records in\n512000+0 records out\n8388608000 bytes (8.4 GB) copied, 71.9507 s, 117 MB\/s   &lt;------- #  NFS\u8bfb\u51fa\u901f\u5ea6\uff0c\u8bfb\u53d61T\u7684\u6570\u636e\u81f3\u5c11\u9700\u8981\uff1a2.5\u4e2a\u5c0f\u65f6\n\nreal    1m11.953s\nuser    0m0.066s\nsys 0m3.052s\n\n\n~]# time dd if=\/OraBak\/10g of=\/dev\/null bs=8k\n1024000+0 records in\n1024000+0 records out\n8388608000 bytes (8.4 GB) copied, 1.66043 s, 5.1 GB\/s   &lt;------- # \u672c\u5730\u78c1\u76d8\u8bfb\u51fa\u901f\u5ea6\uff0c\u8bfb\u53d61T\u7684\u6570\u636e\u9700\u8981\uff1a4\u5206\u949f\n\nreal    0m1.662s\nuser    0m0.081s\nsys 0m1.580s\n<\/code><\/pre>\n<h4><span class=\"ez-toc-section\" id=\"53_%E5%85%B6%E4%BB%96\"><\/span>5.3. \u5176\u4ed6<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u4f7f\u7528dd\u547d\u4ee4\u8fdb\u884c\u8bfb\u53d6\u6570\u636e\u65f6\u7b2c\u4e00\u6b21\u662f\u4ece\u78c1\u76d8\u4e0a\u8bfb\u53d6\u7684\uff0c\u7b2c\u4e8c\u6b21\u6267\u884c\u76f8\u540c\u7684\u8bfb\u547d\u4ee4\u65f6\uff0c\u5b83\u4f1a\u4ece\u5185\u5b58\u7f13\u5b58\u4e2d\u8bfb\u53d6\u7684\uff0c\u4f7f\u7528\u4e0b\u9762\u7684\u547d\u4ee4\u53ef\u6e05\u9664\u5185\u5b58\u7f13\u5b58\uff0c\u751f\u4ea7\u73af\u5883\u4e0d\u8981\u53bb\u6267\u884c\u3002<\/p>\n<pre><code class=\"language-shell line-numbers\">$ sudo sh -c \"sync &amp;&amp; echo 3 &gt; \/proc\/sys\/vm\/drop_caches\"\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u53c2\u8003\uff1ahttps:\/\/blog.csdn.net\/&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[48,160],"class_list":["post-1176","post","type-post","status-publish","format-standard","hentry","category-linux","tag-linux","tag-nfs"],"_links":{"self":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts\/1176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1176"}],"version-history":[{"count":7,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts\/1176\/revisions"}],"predecessor-version":[{"id":1184,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts\/1176\/revisions\/1184"}],"wp:attachment":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1176"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}