{"id":89144,"date":"2026-08-02T14:40:26","date_gmt":"2026-08-02T06:40:26","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/89144.html"},"modified":"2026-08-02T14:40:26","modified_gmt":"2026-08-02T06:40:26","slug":"%e4%b8%87%e5%ad%97%e5%90%83%e9%80%8flinux-lvm%e9%80%bb%e8%be%91%e5%8d%b7%ef%bc%81%e5%bc%b9%e6%80%a7%e6%89%a9%e5%ae%b9%e5%bf%ab%e7%85%a7%e5%a4%87%e4%bb%bdraid%e8%9e%8d%e5%90%88%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/89144.html","title":{"rendered":"\u4e07\u5b57\u5403\u900fLinux LVM\u903b\u8f91\u5377\uff01\u5f39\u6027\u6269\u5bb9+\u5feb\u7167\u5907\u4efd+RAID\u878d\u5408\u5b9e\u6218"},"content":{"rendered":"<h2>\u4e07\u5b57\u5403\u900fLinux LVM\u903b\u8f91\u5377&#xff01;\u5f39\u6027\u6269\u5bb9&#043;\u5feb\u7167\u5907\u4efd&#043;RAID\u878d\u5408\u5b9e\u6218<\/h2>\n<p>\u6458\u8981&#xff1a;\u5728Linux\u670d\u52a1\u5668\u8fd0\u7ef4\u4e2d&#xff0c;\u4f20\u7edf\u78c1\u76d8\u5206\u533a\u56fa\u5316\u3001\u65e0\u6cd5\u7075\u6d3b\u6269\u5bb9\u3001\u4e0d\u652f\u6301\u8de8\u76d8\u5b58\u50a8\u7684\u77ed\u677f&#xff0c;\u65e9\u5df2\u65e0\u6cd5\u9002\u914d\u751f\u4ea7\u73af\u5883\u52a8\u6001\u4e1a\u52a1\u9700\u6c42\u3002\u800cLVM\u903b\u8f91\u5377\u7ba1\u7406\u4f5c\u4e3aLinux\u6838\u5fc3\u5b58\u50a8\u6280\u672f&#xff0c;\u51ed\u501f\u7075\u6d3b\u4f38\u7f29\u3001\u8de8\u76d8\u805a\u5408\u3001\u5feb\u7167\u5907\u4efd\u3001\u5197\u4f59\u5bb9\u9519\u7b49\u7279\u6027&#xff0c;\u6210\u4e3a\u4f01\u4e1a\u5b58\u50a8\u6807\u914d\u65b9\u6848\u3002\u672c\u6587\u4ece\u4f20\u7edf\u5206\u533a\u7f3a\u9677\u5207\u5165&#xff0c;\u8be6\u89e3LVM\u6838\u5fc3\u539f\u7406\u3001PV\/VG\/LV\u5b8c\u6574\u5b9e\u64cd\u3001\u5377\u7ec4\u6269\u7f29\u5bb9\u3001\u903b\u8f91\u5377\u8c03\u4f18\u3001XFS\/EXT4\u6587\u4ef6\u7cfb\u7edf\u9002\u914d\u3001\u5feb\u7167\u5907\u4efd\u6062\u590d\u3001RAID\u903b\u8f91\u5377\u90e8\u7f72&#xff0c;\u5168\u7a0b\u771f\u673a\u547d\u4ee4\u5b9e\u64cd&#xff0c;\u96f6\u57fa\u7840\u4e5f\u80fd\u5feb\u901f\u638c\u63e1\u751f\u4ea7\u7ea7LVM\u8fd0\u7ef4\u6280\u5de7\u3002<\/p>\n<p>\u6807\u7b7e&#xff1a;Linux\u8fd0\u7ef4\u3001LVM\u903b\u8f91\u5377\u3001\u78c1\u76d8\u5b58\u50a8\u3001\u5b58\u50a8\u6269\u5bb9\u3001\u6587\u4ef6\u7cfb\u7edf\u8c03\u4f18\u3001\u6570\u636e\u5feb\u7167\u3001RAID\u5b58\u50a8\u3001\u670d\u52a1\u5668\u8fd0\u7ef4<\/p>\n<hr \/>\n<h3>\u4e00\u3001\u5b9e\u9a8c\u73af\u5883\u51c6\u5907<\/h3>\n<p>\u672c\u6b21\u6240\u6709\u5b9e\u64cd\u57fa\u4e8e CentOS 7 \u7eaf\u51c0\u865a\u62df\u673a\u73af\u5883&#xff0c;\u65e0\u9884\u88c5\u591a\u4f59\u670d\u52a1\u3001\u65e0\u78c1\u76d8\u6b8b\u7559\u6570\u636e\u3002\u624b\u52a8\u65b0\u589e 3\u575720G\u7a7a\u767d\u786c\u76d8&#xff0c;\u8bbe\u5907\u7eaf\u51c0\u65e0\u5206\u533a\u3001\u65e0\u683c\u5f0f\u5316&#xff0c;\u4fdd\u8bc1\u6240\u6709\u64cd\u4f5c\u53ef1:1\u590d\u523b\u843d\u5730\u3002<\/p>\n<p>\u672c\u6b21\u5b9e\u9a8c\u78c1\u76d8\u8bbe\u5907&#xff1a;\/dev\/sdb\u3001\/dev\/sdc\u3001\/dev\/sdd<\/p>\n<p>\u67e5\u770b\u78c1\u76d8\u8bbe\u5907\u72b6\u6001&#xff0c;\u786e\u8ba4\u78c1\u76d8\u7a7a\u95f2\u53ef\u7528&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">14<\/span>:36:41<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lsblk \/dev\/sd[b-d]<\/span><br \/>\nNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT<br \/>\nsdb    <span class=\"token number\">8<\/span>:16   <span class=\"token number\">0<\/span>  20G  <span class=\"token number\">0<\/span> disk<br \/>\nsdc    <span class=\"token number\">8<\/span>:32   <span class=\"token number\">0<\/span>  20G  <span class=\"token number\">0<\/span> disk<br \/>\nsdd    <span class=\"token number\">8<\/span>:48   <span class=\"token number\">0<\/span>  20G  <span class=\"token number\">0<\/span> disk <\/p>\n<h3>\u4e8c\u3001\u4f20\u7edf\u5206\u533a VS LVM\u903b\u8f91\u5377<\/h3>\n<p>\u60f3\u8981\u7406\u89e3LVM\u7684\u6838\u5fc3\u4ef7\u503c&#xff0c;\u9996\u5148\u8981\u6e05\u695a\u4f20\u7edf\u78c1\u76d8\u5206\u533a\u7684\u81f4\u547d\u77ed\u677f&#xff0c;\u8fd9\u4e5f\u662f\u4f01\u4e1a\u666e\u904d\u5f03\u7528\u4f20\u7edf\u5206\u533a\u3001\u5168\u9762\u6539\u7528LVM\u7684\u6838\u5fc3\u539f\u56e0\u3002<\/p>\n<h4>2.1 \u4f20\u7edf\u786c\u76d8\u5206\u533a\u65b9\u6848\u7f3a\u70b9<\/h4>\n<p>\u4f20\u7edfMBR\u3001GPT\u78c1\u76d8\u5206\u533a\u5c5e\u4e8e\u9759\u6001\u5b58\u50a8\u5212\u5206\u65b9\u5f0f&#xff0c;\u5206\u533a\u5927\u5c0f\u56fa\u5b9a\u3001\u7a7a\u95f4\u56fa\u5316&#xff0c;\u5728\u52a8\u6001\u4e1a\u52a1\u573a\u666f\u4e2d\u5c40\u9650\u6027\u6781\u5f3a&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u7a7a\u95f4\u6269\u5bb9\u6781\u5176\u53d7\u9650&#xff1a;\u5206\u533a\u4ec5\u80fd\u4f7f\u7528\u78c1\u76d8\u8fde\u7eed\u7a7a\u95f4&#xff0c;\u82e5\u5206\u533a\u540e\u65b9\u65e0\u7a7a\u95f2\u78c1\u76d8\u7a7a\u95f4&#xff0c;\u65e0\u6cd5\u76f4\u63a5\u6269\u5bb9&#xff0c;\u53ea\u80fd\u91cd\u65b0\u5206\u533a\u3001\u8fc1\u79fb\u6570\u636e&#xff0c;\u64cd\u4f5c\u7e41\u7410\u4e14\u98ce\u9669\u6781\u9ad8\u3002<\/p>\n<\/li>\n<li>\n<p>\u5355\u76d8\u5bb9\u91cf\u9650\u5236&#xff1a;\u5355\u4e2a\u6587\u4ef6\u7cfb\u7edf\u53ea\u80fd\u4f9d\u6258\u5355\u5757\u7269\u7406\u78c1\u76d8\u521b\u5efa&#xff0c;\u65e0\u6cd5\u8de8\u591a\u5757\u786c\u76d8\u805a\u5408\u5bb9\u91cf&#xff0c;\u65e0\u6cd5\u642d\u5efa\u8d85\u5927\u5bb9\u91cf\u5b58\u50a8\u6c60\u3002<\/p>\n<\/li>\n<li>\n<p>\u6570\u636e\u5bb9\u9519\u80fd\u529b\u5f31&#xff1a;\u78c1\u76d8\u4e0e\u5206\u533a\u5f3a\u7ed1\u5b9a&#xff0c;\u5355\u5757\u786c\u76d8\u635f\u574f&#xff0c;\u5bf9\u5e94\u5206\u533a\u5185\u6240\u6709\u6570\u636e\u76f4\u63a5\u4e22\u5931&#xff0c;\u65e0\u5197\u4f59\u5907\u4efd\u673a\u5236\u3002<\/p>\n<\/li>\n<li>\n<p>\u65e0\u6cd5\u52a8\u6001\u8c03\u4f18&#xff1a;\u5206\u533a\u521b\u5efa\u540e\u5927\u5c0f\u56fa\u5b9a&#xff0c;\u6269\u5bb9\u3001\u7f29\u5bb9\u3001\u91cd\u6784\u5747\u9700\u8981\u79bb\u7ebf\u64cd\u4f5c&#xff0c;\u4f1a\u76f4\u63a5\u4e2d\u65ad\u4e1a\u52a1\u8fd0\u884c\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>2.2 LVM\u903b\u8f91\u5377\u65b9\u6848\u6838\u5fc3\u4f18\u70b9<\/h4>\n<p>LVM&#xff08;Logical Volume Manager&#xff0c;\u903b\u8f91\u5377\u7ba1\u7406\u5668&#xff09;\u662fLinux\u4e13\u5c5e\u7684\u52a8\u6001\u5f39\u6027\u5b58\u50a8\u7ba1\u7406\u673a\u5236&#xff0c;\u5f7b\u5e95\u89e3\u51b3\u4f20\u7edf\u5206\u533a\u75db\u70b9&#xff0c;\u9002\u914d90%\u4ee5\u4e0a\u4f01\u4e1a\u670d\u52a1\u5668\u5b58\u50a8\u573a\u666f&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5f39\u6027\u4f38\u7f29\u7075\u6d3b&#xff1a;\u652f\u6301\u903b\u8f91\u5377\u5728\u7ebf\u6269\u5bb9\u3001\u79bb\u7ebf\u7f29\u5bb9&#xff0c;\u65e0\u9700\u91cd\u88c5\u7cfb\u7edf\u3001\u65e0\u9700\u8fc1\u79fb\u5168\u91cf\u6570\u636e&#xff0c;\u4e0d\u5f71\u54cd\u6838\u5fc3\u4e1a\u52a1\u8fd0\u884c\u3002<\/p>\n<\/li>\n<li>\n<p>\u8de8\u76d8\u805a\u5408\u5b58\u50a8&#xff1a;\u53ef\u5c06\u591a\u5757\u7269\u7406\u786c\u76d8\u6574\u5408\u4e3a\u7edf\u4e00\u5b58\u50a8\u6c60&#xff0c;\u7a81\u7834\u5355\u76d8\u5bb9\u91cf\u9650\u5236&#xff0c;\u8f7b\u677e\u642d\u5efa\u8d85\u5927\u5bb9\u91cf\u6587\u4ef6\u7cfb\u7edf\u3002<\/p>\n<\/li>\n<li>\n<p>\u652f\u6301\u6570\u636e\u5197\u4f59&#xff1a;\u53ef\u7ed3\u5408RAID\u6280\u672f\u521b\u5efa\u955c\u50cf\u903b\u8f91\u5377&#xff0c;\u5b9e\u73b0\u78c1\u76d8\u6570\u636e\u5197\u4f59&#xff0c;\u5355\u5757\u786c\u76d8\u635f\u574f\u4e0d\u4f1a\u4e22\u5931\u6570\u636e\u3001\u4e0d\u4e2d\u65ad\u4e1a\u52a1\u3002<\/p>\n<\/li>\n<li>\n<p>\u5feb\u7167\u5907\u4efd\u6062\u590d&#xff1a;\u81ea\u5e26LV\u5feb\u7167\u529f\u80fd&#xff0c;\u53ef\u79d2\u7ea7\u7559\u5b58\u6570\u636e\u67d0\u4e00\u65f6\u523b\u5b8c\u6574\u72b6\u6001&#xff0c;\u5b9e\u73b0\u5feb\u901f\u5907\u4efd\u4e0e\u8bef\u5220\u6570\u636e\u6062\u590d\u3002<\/p>\n<\/li>\n<li>\n<p>\u8d44\u6e90\u5229\u7528\u7387\u6700\u5927\u5316&#xff1a;\u78c1\u76d8\u8d44\u6e90\u6c60\u5316\u7ba1\u7406&#xff0c;\u53ef\u6309\u9700\u5206\u914d\u3001\u56de\u6536\u5b58\u50a8\u7a7a\u95f4&#xff0c;\u907f\u514d\u78c1\u76d8\u8d44\u6e90\u95f2\u7f6e\u6d6a\u8d39\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>\u4e09\u3001LVM\u6838\u5fc3\u6982\u5ff5\u4e0e\u5de5\u4f5c\u6d41\u7a0b<\/h3>\n<h4>3.1 \u6838\u5fc3\u6982\u5ff5\u8be6\u89e3<\/h4>\n<p>LVM\u6574\u4f53\u67b6\u6784\u5206\u4e3a\u4e09\u5c42&#xff1a;\u7269\u7406\u5377PV \u2192 \u5377\u7ec4VG \u2192 \u903b\u8f91\u5377LV&#xff0c;\u4e09\u5c42\u9010\u7ea7\u5c01\u88c5&#xff0c;\u662fLVM\u8fd0\u7ef4\u7684\u6838\u5fc3\u903b\u8f91&#xff0c;\u5fc5\u987b\u719f\u7ec3\u638c\u63e1\u3002<\/p>\n<h5>1. PV \u7269\u7406\u5377&#xff08;Physical Volume&#xff09;<\/h5>\n<p>LVM\u7684\u6700\u5c0f\u7269\u7406\u5b58\u50a8\u5355\u5143&#xff0c;\u662f\u5c06\u666e\u901a\u78c1\u76d8\u3001\u78c1\u76d8\u5206\u533a\u3001RAID\u9635\u5217\u7b49\u5757\u8bbe\u5907&#xff0c;\u521d\u59cb\u5316\u540e\u7684\u4e13\u5c5eLVM\u5b58\u50a8\u8bbe\u5907\u3002\u7269\u7406\u5377\u4f1a\u8bb0\u5f55LVM\u4e13\u5c5e\u7ba1\u7406\u53c2\u6570&#xff0c;\u4e3a\u4e0a\u5c42\u5377\u7ec4\u63d0\u4f9b\u539f\u59cb\u5b58\u50a8\u7a7a\u95f4\u3002<\/p>\n<h5>2. VG \u5377\u7ec4&#xff08;Volume Group&#xff09;<\/h5>\n<p>\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u7269\u7406\u5377PV\u805a\u5408\u800c\u6210\u7684\u5b58\u50a8\u8d44\u6e90\u6c60\u3002\u5377\u7ec4\u65e0\u56fa\u5b9a\u5bb9\u91cf\u9650\u5236&#xff0c;\u53ef\u968f\u65f6\u65b0\u589ePV\u6269\u5bb9\u3001\u79fb\u9664PV\u7f29\u5bb9&#xff0c;\u6240\u6709\u903b\u8f91\u5377\u5747\u4ece\u5377\u7ec4\u4e2d\u5206\u914d\u7a7a\u95f4\u3002<\/p>\n<h5>3. LV \u903b\u8f91\u5377&#xff08;Logical Volume&#xff09;<\/h5>\n<p>\u4ece\u5377\u7ec4VG\u4e2d\u6309\u9700\u5212\u5206\u7684\u903b\u8f91\u5b58\u50a8\u7a7a\u95f4&#xff0c;\u662f\u6700\u7ec8\u7ed9\u7528\u6237\u4f7f\u7528\u7684\u5b58\u50a8\u8f7d\u4f53\u3002\u7c7b\u6bd4\u4f20\u7edf\u5206\u533a&#xff1a;\u5377\u7ec4\u76f8\u5f53\u4e8e\u4e00\u5757\u8d85\u5927\u865a\u62df\u786c\u76d8&#xff0c;\u903b\u8f91\u5377\u76f8\u5f53\u4e8e\u865a\u62df\u786c\u76d8\u4e0a\u7684\u5206\u533a&#xff0c;\u53ef\u76f4\u63a5\u683c\u5f0f\u5316\u3001\u6302\u8f7d\u4f7f\u7528\u3002<\/p>\n<h4>3.2 LVM\u6807\u51c6\u5de5\u4f5c\u6d41\u7a0b<\/h4>\n<p>LVM\u6240\u6709\u90e8\u7f72\u3001\u8fd0\u7ef4\u64cd\u4f5c&#xff0c;\u4e25\u683c\u9075\u5faa\u56fa\u5b9a\u6d41\u7a0b&#xff1a;\u521d\u59cb\u5316\u7269\u7406\u5377PV \u2192 \u521b\u5efa\/\u6269\u5bb9\u5377\u7ec4VG \u2192 \u521b\u5efa\/\u8c03\u4f18\u903b\u8f91\u5377LV \u2192 \u683c\u5f0f\u5316\u6587\u4ef6\u7cfb\u7edf \u2192 \u6302\u8f7d\u4f7f\u7528<\/p>\n<h3>\u56db\u3001LVM\u57fa\u7840\u5b9e\u64cd&#xff1a;PV\/VG\/LV\u521b\u5efa\u4e0e\u7ba1\u7406<\/h3>\n<h4>4.1 \u5e38\u7528\u547d\u4ee4\u53ca\u9009\u9879<\/h4>\n<table>\n<tr>\u5206\u7c7b\u5355\u884c\u547d\u4ee4\u6a21\u677f\u529f\u80fd\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>PV \u7269\u7406\u5377<\/td>\n<td>pvcreate \/dev\/sdX [-f]<\/td>\n<td>\u78c1\u76d8\u683c\u5f0f\u5316\u4e3a PV&#xff0c;-f \u5f3a\u5236\u6e05\u9664\u65e7\u5206\u533a\u3001\u9635\u5217\u6b8b\u7559<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>pvdisplay [\/dev\/sdX]<\/td>\n<td>\u67e5\u770b\u5168\u90e8 \/ \u5355\u4e2a PV \u8be6\u7ec6\u53c2\u6570<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>pvs [-o &#043; \u81ea\u5b9a\u4e49\u5b57\u6bb5]<\/td>\n<td>\u7cbe\u7b80\u5217\u8868\u5feb\u901f\u67e5\u770b\u6240\u6709 PV<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>pvremove \/dev\/sdX [-f]<\/td>\n<td>\u64e6\u9664 PV \u7684 LVM \u6807\u7b7e&#xff0c;-f \u5f3a\u5236\u5220\u9664<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>pvmove \u6e90 PV [\u76ee\u6807 PV] [-n LV \u540d]<\/td>\n<td>PV \u6570\u636e\u8fc1\u79fb&#xff0c;\u53ef\u5b9a\u5411\u8fc1\u79fb\u3001\u6307\u5b9a LV \u8fc1\u79fb<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>pvresize \/dev\/sdX [&#8211;setphysicalvolumesize \u5bb9\u91cf]<\/td>\n<td>\u5237\u65b0\u6269\u5bb9\u7a7a\u95f4\u3001\u624b\u52a8\u9650\u5236 PV \u5927\u5c0f<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>pvscan [-v]<\/td>\n<td>\u5168\u76d8\u626b\u63cf\u8bc6\u522b\u6240\u6709 LVM \u7269\u7406\u5377<\/td>\n<\/tr>\n<tr>\n<td>VG \u5377\u7ec4<\/td>\n<td>vgcreate [-s PE \u5c3a\u5bf8] VG \u540d PV1 PV2\u2026<\/td>\n<td>\u521b\u5efa\u5377\u7ec4&#xff0c;-s \u4ec5\u521b\u5efa\u65f6\u8bbe\u7f6e PE \u5927\u5c0f&#xff0c;\u540e\u7eed\u4e0d\u53ef\u6539<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>vgdisplay [VG \u540d\u79f0]<\/td>\n<td>\u67e5\u770b\u5168\u90e8 \/ \u5355\u4e2a VG \u8be6\u7ec6\u4fe1\u606f<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>vgs [-o &#043; \u81ea\u5b9a\u4e49\u5b57\u6bb5]<\/td>\n<td>\u7b80\u6d01\u5217\u8868\u67e5\u770b\u5377\u7ec4\u5bb9\u91cf\u3001\u7a7a\u95f2\u7a7a\u95f4<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>vgextend VG \u540d \/dev\/sdX<\/td>\n<td>\u65b0\u589e PV&#xff0c;\u6269\u5bb9\u5377\u7ec4\u603b\u7a7a\u95f4<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>vgreduce VG \u540d \/dev\/sdX [-a\/&#8211;removemissing]<\/td>\n<td>\u79fb\u9664\u7a7a\u95f2 PV\u3001\u6e05\u7406\u635f\u574f\u4e22\u5931 PV<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>vgremove VG \u540d [-f]<\/td>\n<td>\u5220\u9664\u6574\u5377\u7ec4&#xff0c;-f \u514d\u786e\u8ba4\u5f3a\u5236\u5220\u9664<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>vgrename \u65e7\u540d \u65b0\u540d<\/td>\n<td>\u5377\u7ec4\u91cd\u547d\u540d<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>vgchange -a y\/n VG \u540d<\/td>\n<td>-ay \u6fc0\u6d3b VG\u3001-an \u79bb\u7ebf\u505c\u7528 VG<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>vgsplit\/vgmerge<\/td>\n<td>\u62c6\u5206\u5377\u7ec4\u3001\u5408\u5e76\u95f2\u7f6e\u5377\u7ec4<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>vgexport\/vgimport VG \u540d<\/td>\n<td>\u8de8\u670d\u52a1\u5668\u8fc1\u79fb VG \u7684\u5bfc\u51fa\u3001\u5bfc\u5165<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>vgscan<\/td>\n<td>\u626b\u63cf\u5168\u5c40\u6240\u6709\u5377\u7ec4<\/td>\n<\/tr>\n<tr>\n<td>LV \u903b\u8f91\u5377<\/td>\n<td>lvcreate -L \u5bb9\u91cf \/-lPE \u6570 -nLV \u540d VG \u540d [-i \u6761\u5e26 \/-m \u955c\u50cf \/-s \u5feb\u7167]<\/td>\n<td>\u521b\u5efa\u666e\u901a \/ \u6761\u5e26 \/ \u955c\u50cf \/ \u5feb\u7167\u903b\u8f91\u5377<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>lvdisplay [\/dev\/VG\/LV]<\/td>\n<td>\u67e5\u770b\u5168\u90e8 \/ \u5355\u4e2a LV \u8be6\u60c5<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>lvs [-o &#043; \u81ea\u5b9a\u4e49\u5b57\u6bb5]<\/td>\n<td>\u5217\u8868\u5feb\u901f\u67e5\u770b\u903b\u8f91\u5377\u72b6\u6001\u4e0e\u5927\u5c0f<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>lvextend -L\u00b1 \u5bb9\u91cf \/-l&#043;100% FREE [-r] \/dev\/VG\/LV<\/td>\n<td>\u6269\u5bb9 LV&#xff0c;-r \u81ea\u52a8\u540c\u6b65\u6269\u5bb9\u6587\u4ef6\u7cfb\u7edf<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>lvreduce -L\u00b1 \u5bb9\u91cf [-r\/-f] \/dev\/VG\/LV<\/td>\n<td>\u7f29\u5bb9 LV&#xff0c;\u4ec5 ext4 \u53ef\u7528&#xff0c;XFS \u7981\u6b62\u7f29\u5bb9<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>lvresize -L \u5bb9\u91cf [-r] \/dev\/VG\/LV<\/td>\n<td>\u901a\u7528\u4f38\u7f29 LV&#xff0c;-r \u8054\u52a8\u6587\u4ef6\u7cfb\u7edf\u5927\u5c0f<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>lvremove [-f] \/dev\/VG\/LV<\/td>\n<td>\u5220\u9664\u903b\u8f91\u5377&#xff0c;-f \u5f3a\u5236\u5220\u9664<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>lvrename \u65e7\u8def\u5f84 \u65b0\u8def\u5f84<\/td>\n<td>\u903b\u8f91\u5377\u91cd\u547d\u540d<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>lvchange -a y\/n \/dev\/VG\/LV<\/td>\n<td>\u6fc0\u6d3b\u3001\u79bb\u7ebf\u505c\u7528 LV&#xff0c;\u53ef\u4fee\u6539\u8bfb\u5199\u6743\u9650<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>lvconvert &#8211;merge\/&#8211;type raid1 \/dev\/VG\/LV<\/td>\n<td>\u5feb\u7167\u56de\u6eda\u3001\u666e\u901a LV \u8f6c\u4e3a\u955c\u50cf LV\u3001\u6545\u969c\u76d8\u66ff\u6362<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>lvscan<\/td>\n<td>\u5168\u76d8\u626b\u63cf\u6240\u6709\u903b\u8f91\u5377<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>4.2 \u7269\u7406\u5377 PV \u521b\u5efa\u4e0e\u67e5\u770b<\/h4>\n<p>\u5c06\u7a7a\u95f2\u78c1\u76d8\u8bbe\u5907\u521d\u59cb\u5316\u4e3aLVM\u7269\u7406\u5377&#xff0c;\u652f\u6301\u5355\u5757\u78c1\u76d8\u521b\u5efa\u3001\u591a\u5757\u78c1\u76d8\u6279\u91cf\u521b\u5efa\u3002<\/p>\n<p><span class=\"token comment\"># \u5355\u4e2a\u78c1\u76d8\u521b\u5efaPV<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">14<\/span>:56:09<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvcreate \/dev\/sdb<\/span><br \/>\n  Physical volume <span class=\"token string\">&#034;\/dev\/sdb&#034;<\/span> successfully created.<\/p>\n<p><span class=\"token comment\"># \u6279\u91cf\u591a\u78c1\u76d8\u521b\u5efaPV<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">14<\/span>:56:58<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvcreate \/dev\/sd[cd]<\/span><br \/>\n  Physical volume <span class=\"token string\">&#034;\/dev\/sdc&#034;<\/span> successfully created.<br \/>\n  Physical volume <span class=\"token string\">&#034;\/dev\/sdd&#034;<\/span> successfully created.<\/p>\n<p>\u7b80\u6d01\u67e5\u770b\u6240\u6709\u7269\u7406\u5377\u6982\u8981\u4fe1\u606f&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">14<\/span>:57:04<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvs<\/span><br \/>\n  PV         VG     Fmt  Attr PSize    PFree<br \/>\n  \/dev\/sda2  centos lvm2 a&#8211;  <span class=\"token operator\">&lt;<\/span><span class=\"token number\">199<\/span>.00g  <span class=\"token number\">4<\/span>.00m<br \/>\n  \/dev\/sdb          lvm2 &#8212;    <span class=\"token number\">20<\/span>.00g <span class=\"token number\">20<\/span>.00g<br \/>\n  \/dev\/sdc          lvm2 &#8212;    <span class=\"token number\">20<\/span>.00g <span class=\"token number\">20<\/span>.00g<br \/>\n  \/dev\/sdd          lvm2 &#8212;    <span class=\"token number\">20<\/span>.00g <span class=\"token number\">20<\/span>.00g<\/p>\n<p>\u67e5\u770b\u5355\u4e2a\u7269\u7406\u5377\u8be6\u7ec6\u53c2\u6570&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">14<\/span>:58:45<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvdisplay \/dev\/sdb<\/span><br \/>\n  <span class=\"token string\">&#034;\/dev\/sdb&#034;<\/span> is a new physical volume of <span class=\"token string\">&#034;20.00 GiB&#034;<\/span><br \/>\n  &#8212; NEW Physical volume &#8212;<br \/>\n  PV Name               \/dev\/sdb<br \/>\n  VG Name<br \/>\n  PV Size               <span class=\"token number\">20.00<\/span> GiB<br \/>\n  Allocatable           NO<br \/>\n  PE Size               <span class=\"token number\">0<\/span><br \/>\n  Total PE              <span class=\"token number\">0<\/span><br \/>\n  Free PE               <span class=\"token number\">0<\/span><br \/>\n  Allocated PE          <span class=\"token number\">0<\/span><br \/>\n  PV UUID               pDGM56-OeYz-hkAM-2HE6-MuiH-ZG3U-s2oPvg<\/p>\n<h4>4.3 \u5377\u7ec4 VG \u521b\u5efa\u4e0e\u67e5\u770b<\/h4>\n<p>\u5c06\u521d\u59cb\u5316\u5b8c\u6210\u7684\u7269\u7406\u5377\u805a\u5408\u4e3a\u5377\u7ec4&#xff0c;\u652f\u6301\u5355PV\u521b\u5efa\u5377\u7ec4\u3001\u591aPV\u805a\u5408\u521b\u5efa\u5377\u7ec4\u3002<\/p>\n<p><span class=\"token comment\"># \u5355\u7269\u7406\u5377\u521b\u5efa\u5377\u7ec4 webapp<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">14<\/span>:58:53<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgcreate webapp \/dev\/sdb<\/span><br \/>\n  Volume group <span class=\"token string\">&#034;webapp&#034;<\/span> successfully created<\/p>\n<p><span class=\"token comment\"># \u591a\u7269\u7406\u5377\u805a\u5408\u521b\u5efa\u5377\u7ec4 dbapp<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:01:03<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgcreate dbapp \/dev\/sd[cd]<\/span><br \/>\n  Volume group <span class=\"token string\">&#034;dbapp&#034;<\/span> successfully created<\/p>\n<p>\u67e5\u770bPV\u4e0eVG\u7ed1\u5b9a\u72b6\u6001&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;centos7 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvs<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:01:08<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvs<\/span><br \/>\n  PV         VG     Fmt  Attr PSize    PFree<br \/>\n  \/dev\/sda2  centos lvm2 a&#8211;  <span class=\"token operator\">&lt;<\/span><span class=\"token number\">199<\/span>.00g   <span class=\"token number\">4<\/span>.00m<br \/>\n  \/dev\/sdb   webapp lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g<br \/>\n  \/dev\/sdc   dbapp  lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g<br \/>\n  \/dev\/sdd   dbapp  lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g<\/p>\n<p>\u7b80\u6d01\u67e5\u770b\u6240\u6709\u5377\u7ec4\u6982\u8981&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;centos7 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgs<\/span><br \/>\n  VG     <span class=\"token comment\">#PV #LV #SN Attr   VSize   VFree  <\/span><br \/>\n  dbapp    <span class=\"token number\">2<\/span>   <span class=\"token number\">0<\/span>   <span class=\"token number\">0<\/span> wz&#8211;n-   <span class=\"token number\">39<\/span>.99g  <span class=\"token number\">39<\/span>.99g<br \/>\n  webapp   <span class=\"token number\">1<\/span>   <span class=\"token number\">0<\/span>   <span class=\"token number\">0<\/span> wz&#8211;n-  <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g<\/p>\n<p>\u67e5\u770b\u5377\u7ec4\u8be6\u7ec6\u4fe1\u606f&#xff08;\u542bPE\u5355\u5143\u3001\u5bb9\u91cf\u3001\u8bbe\u5907\u6570&#xff09;&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:01:48<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgdisplay  dbapp<\/span><br \/>\n   &#8212; Volume group &#8212;<br \/>\n  VG Name               dbapp                  <span class=\"token comment\"># \u5377\u7ec4\u540d\u79f0<\/span><br \/>\n  System ID<br \/>\n  Format                lvm2                   <span class=\"token comment\"># \u91c7\u7528lvm2\u683c\u5f0f<\/span><br \/>\n  Metadata Areas        <span class=\"token number\">2<\/span>                      <span class=\"token comment\"># \u5143\u6570\u636e\u5b58\u50a8\u57282\u4e2a\u7269\u7406\u5377\u4e0a<\/span><br \/>\n  Metadata Sequence No  <span class=\"token number\">1<\/span>                      <span class=\"token comment\"># \u5377\u7ec4\u64cd\u4f5c\u5e8f\u5217\u53f7&#xff0c;\u6bcf\u6b21\u53d8\u66f4\u81ea\u52a8\u9012\u589e<\/span><br \/>\n  VG Access             read\/write             <span class=\"token comment\"># \u5377\u7ec4\u6743\u9650&#xff1a;\u53ef\u8bfb\u53ef\u5199<\/span><br \/>\n  VG Status             resizable              <span class=\"token comment\"># \u5377\u7ec4\u652f\u6301\u6269\u5bb9\u3001\u7f29\u5bb9<\/span><br \/>\n  MAX LV                <span class=\"token number\">0<\/span>                      <span class=\"token comment\"># \u6700\u5927\u903b\u8f91\u5377\u6570\u91cf\u9650\u5236&#xff0c;0\u4e3a\u65e0\u9650\u5236<\/span><br \/>\n  Cur LV                <span class=\"token number\">0<\/span>                      <span class=\"token comment\"># \u5f53\u524d\u5df2\u521b\u5efa\u903b\u8f91\u5377\u603b\u6570<\/span><br \/>\n  Open LV               <span class=\"token number\">0<\/span>                      <span class=\"token comment\"># \u5f53\u524d\u6b63\u5728\u6302\u8f7d\u4f7f\u7528\u7684\u903b\u8f91\u5377\u6570\u91cf<\/span><br \/>\n  Max PV                <span class=\"token number\">0<\/span>                      <span class=\"token comment\"># \u6700\u5927\u7269\u7406\u5377\u6570\u91cf\u9650\u5236&#xff0c;0\u4e3a\u65e0\u9650\u5236<\/span><br \/>\n  Cur PV                <span class=\"token number\">2<\/span>                      <span class=\"token comment\"># \u5df2\u52a0\u5165\u8be5VG\u7684\u7269\u7406\u5377\u603b\u6570<\/span><br \/>\n  Act PV                <span class=\"token number\">2<\/span>                      <span class=\"token comment\"># \u6b63\u5e38\u5728\u7ebf\u53ef\u7528\u7684\u7269\u7406\u5377\u6570\u91cf<\/span><br \/>\n  VG Size               <span class=\"token number\">39.99<\/span> GiB              <span class=\"token comment\"># \u5377\u7ec4\u6574\u4f53\u603b\u5bb9\u91cf<\/span><br \/>\n  PE Size               <span class=\"token number\">4.00<\/span> MiB               <span class=\"token comment\"># PE\u6700\u5c0f\u5206\u914d\u5355\u5143&#xff0c;LVM\u7a7a\u95f4\u6700\u5c0f\u5212\u5206\u7c92\u5ea6<\/span><br \/>\n  Total PE              <span class=\"token number\">10238<\/span>                  <span class=\"token comment\"># \u5377\u7ec4\u5168\u90e8PE\u603b\u6570<\/span><br \/>\n  Alloc PE \/ Size       <span class=\"token number\">0<\/span> \/ <span class=\"token number\">0<\/span>                  <span class=\"token comment\"># \u5df2\u5206\u914dPE\u6570\u91cf\u3001\u5df2\u5360\u7528\u7a7a\u95f4\u5927\u5c0f<\/span><br \/>\n  Free  PE \/ Size       <span class=\"token number\">10238<\/span> \/ <span class=\"token number\">39.99<\/span> GiB      <span class=\"token comment\"># \u7a7a\u95f2PE\u6570\u91cf\u3001\u5269\u4f59\u53ef\u7528\u7a7a\u95f4<\/span><br \/>\n  VG UUID               oYlsNo-3Xb5-7qv5-krAv-7PEI-8iV9-0Badcj  <span class=\"token comment\"># \u5377\u7ec4\u552f\u4e00UUID\u6807\u8bc6<\/span><\/p>\n<p>\u6838\u5fc3\u6ce8\u89e3&#xff1a;PE&#xff08;Physical Extend&#xff09;\u662f\u5377\u7ec4\u6700\u5c0f\u7269\u7406\u5b58\u50a8\u5355\u5143&#xff0c;\u9ed8\u8ba44MB&#xff0c;\u6240\u6709\u903b\u8f91\u5377\u7a7a\u95f4\u5747\u4ee5PE\u4e3a\u5355\u4f4d\u5206\u914d&#xff0c;\u662fLVM\u7a7a\u95f4\u8c03\u5ea6\u7684\u6838\u5fc3\u7c92\u5ea6\u3002<\/p>\n<h4>4.4 \u903b\u8f91\u5377 LV \u521b\u5efa\u4e0e\u67e5\u770b<\/h4>\n<p>\u4ece\u5df2\u6709\u5377\u7ec4\u4e2d\u6309\u9700\u5212\u5206\u7a7a\u95f4&#xff0c;\u521b\u5efa\u903b\u8f91\u5377&#xff0c;\u652f\u6301\u6307\u5b9a\u56fa\u5b9a\u5bb9\u91cf\u521b\u5efa\u8de8\u76d8\u903b\u8f91\u5377\u3002<\/p>\n<p><span class=\"token comment\"># webapp\u5377\u7ec4\u521b\u5efa5G\u903b\u8f91\u5377 webapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:07:35<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvcreate -n webapp01 -L 5G webapp <\/span><br \/>\n  Logical volume <span class=\"token string\">&#034;webapp01&#034;<\/span> created.<\/p>\n<p><span class=\"token comment\"># dbapp\u5377\u7ec4\u521b\u5efa25G\u8de8\u76d8\u903b\u8f91\u5377 dbapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:10:56<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvcreate -n dbapp01 -L 25G dbapp <\/span><br \/>\n  Logical volume <span class=\"token string\">&#034;dbapp01&#034;<\/span> created.<\/p>\n<p>\u67e5\u770b\u6240\u6709\u903b\u8f91\u5377\u6982\u8981\u4fe1\u606f&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u67e5\u770b\u903b\u8f91\u5377\u7b80\u6d01\u4fe1\u606f<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:12:30<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvs<\/span><br \/>\n  LV       VG     Attr       LSize    Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert<br \/>\n  home     centos -wi-ao&#8212;- <span class=\"token operator\">&lt;<\/span><span class=\"token number\">145<\/span>.12g<br \/>\n  root     centos -wi-ao&#8212;-   <span class=\"token number\">50<\/span>.00g<br \/>\n  swap     centos -wi-ao&#8212;-   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">3<\/span>.88g<br \/>\n  dbapp01  dbapp  -wi-a&#8212;&#8211;   <span class=\"token number\">25<\/span>.00g<br \/>\n  webapp01 webapp -wi-a&#8212;&#8211;    <span class=\"token number\">5<\/span>.00g <\/p>\n<p><span class=\"token comment\"># \u67e5\u770b\u903b\u8f91\u5377\u8be6\u7ec6\u4fe1\u606f<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:12:20<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvdisplay \/dev\/webapp\/webapp01 <\/span><br \/>\n&#8212; Logical volume &#8212;<br \/>\n  LV Path                \/dev\/webapp\/webapp01              <span class=\"token comment\"># \u903b\u8f91\u5377\u8bbe\u5907\u5b8c\u6574\u8def\u5f84&#xff0c;\u6302\u8f7d\u3001\u683c\u5f0f\u5316\u4f7f\u7528\u8be5\u8def\u5f84<\/span><br \/>\n  LV Name                webapp01                          <span class=\"token comment\"># \u903b\u8f91\u5377\u540d\u79f0<\/span><br \/>\n  VG Name                webapp                            <span class=\"token comment\"># \u5f52\u5c5e\u7684\u5377\u7ec4\u540d\u79f0<\/span><br \/>\n  LV UUID                YqF1zd-POfx-xyQU-NERg-Rlqp-k23d-LFTL9Q  <span class=\"token comment\"># \u903b\u8f91\u5377\u552f\u4e00\u6807\u8bc6<\/span><br \/>\n  LV Write Access        read\/write                        <span class=\"token comment\"># \u6743\u9650&#xff1a;\u6b63\u5e38\u53ef\u8bfb\u53ef\u5199<\/span><br \/>\n  LV Creation host, <span class=\"token function\">time<\/span> server.fangbing.cloud, <span class=\"token number\">2026<\/span>-08-01 <span class=\"token number\">15<\/span>:10:56 &#043;0800  <span class=\"token comment\"># \u521b\u5efa\u4e3b\u673a\u4e0e\u65f6\u95f4<\/span><br \/>\n  LV Status              available                         <span class=\"token comment\"># \u72b6\u6001&#xff1a;\u53ef\u7528\u3001\u6b63\u5e38<\/span><br \/>\n  <span class=\"token comment\"># open                 0                                 # \u88ab\u8fdb\u7a0b\u6302\u8f7d\u6253\u5f00\u6b21\u6570&#xff0c;0\u4ee3\u8868\u5f53\u524d\u672a\u6302\u8f7d<\/span><br \/>\n  LV Size                <span class=\"token number\">5.00<\/span> GiB                          <span class=\"token comment\"># \u903b\u8f91\u5377\u603b\u5927\u5c0f5G<\/span><br \/>\n  Current LE             <span class=\"token number\">1280<\/span>                              <span class=\"token comment\"># \u5360\u7528LE\u6570\u91cf&#xff0c;LE\u548cVG\u7684PE\u4e00\u4e00\u5bf9\u5e94<\/span><br \/>\n  Segments               <span class=\"token number\">1<\/span>                                 <span class=\"token comment\"># \u7a7a\u95f4\u8fde\u7eed\u4e3a1\u6bb5&#xff0c;\u65e0\u788e\u7247\u5316\u5206\u6563<\/span><br \/>\n  Allocation             inherit                           <span class=\"token comment\"># \u7a7a\u95f4\u5206\u914d\u7b56\u7565&#xff1a;\u7ee7\u627f\u5377\u7ec4\u9ed8\u8ba4\u7b56\u7565<\/span><br \/>\n  Read ahead sectors     auto                              <span class=\"token comment\"># \u9884\u8bfb\u6247\u533a\u81ea\u52a8\u8c03\u8282<\/span><br \/>\n  &#8211; currently <span class=\"token builtin class-name\">set<\/span> to     <span class=\"token number\">8192<\/span>                              <span class=\"token comment\"># \u5f53\u524d\u9884\u8bfb\u6247\u533a\u6570\u503c<\/span><br \/>\n  Block device           <span class=\"token number\">253<\/span>:3                             <span class=\"token comment\"># \u5185\u6838\u4e3b\u6b21\u8bbe\u5907\u53f7<\/span><\/p>\n<h4>4.5 \u903b\u8f91\u5377\u8bbe\u5907\u4e09\u79cd\u8bbf\u95ee\u683c\u5f0f<\/h4>\n<p>LVM\u903b\u8f91\u5377\u5728\u7cfb\u7edf\u4e2d\u5b58\u5728\u4e09\u79cd\u8bbe\u5907\u6807\u8bc6\u683c\u5f0f&#xff0c;\u529f\u80fd\u5b8c\u5168\u901a\u7528&#xff0c;\u53ef\u968f\u610f\u4f7f\u7528&#xff1a;<\/p>\n<ul>\n<li>\n<p>\/dev\/\u5377\u7ec4\u540d\/\u903b\u8f91\u5377\u540d&#xff08;\u6700\u76f4\u89c2\u3001\u5e38\u7528&#xff09;<\/p>\n<\/li>\n<li>\n<p>\/dev\/mapper\/\u5377\u7ec4\u540d-\u903b\u8f91\u5377\u540d<\/p>\n<\/li>\n<li>\n<p>\/dev\/dm-N&#xff08;\u7cfb\u7edf\u5185\u6838\u8bbe\u5907\u540d&#xff09;<\/p>\n<\/li>\n<\/ul>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:15:18<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ls -l \/dev\/webapp\/webapp01 \/dev\/mapper\/webapp-webapp01 <\/span><br \/>\nlrwxrwxrwx. <span class=\"token number\">1<\/span> root root <span class=\"token number\">7<\/span> <span class=\"token number\">8<\/span>\u6708   <span class=\"token number\">1<\/span> <span class=\"token number\">15<\/span>:10 \/dev\/mapper\/webapp-webapp01 &#8211;<span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">..<\/span>\/dm-3<br \/>\nlrwxrwxrwx. <span class=\"token number\">1<\/span> root root <span class=\"token number\">7<\/span> <span class=\"token number\">8<\/span>\u6708   <span class=\"token number\">1<\/span> <span class=\"token number\">15<\/span>:10 \/dev\/webapp\/webapp01 &#8211;<span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">..<\/span>\/dm-3<\/p>\n<h4>4.6 \u67e5\u770b\u903b\u8f91\u5377\u8be6\u7ec6\u4e0e\u8de8\u76d8\u72b6\u6001<\/h4>\n<p>\u67e5\u770b\u5355\u4e2a\u903b\u8f91\u5377\u5b8c\u6574\u53c2\u6570&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u67e5\u770b\u903b\u8f91\u5377\u8be6\u7ec6\u4fe1\u606f<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:12:20<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvdisplay \/dev\/webapp\/webapp01 <\/span><br \/>\n&#8212; Logical volume &#8212;<br \/>\n  LV Path                \/dev\/webapp\/webapp01              <span class=\"token comment\"># \u903b\u8f91\u5377\u8bbe\u5907\u5b8c\u6574\u8def\u5f84&#xff0c;\u6302\u8f7d\u3001\u683c\u5f0f\u5316\u4f7f\u7528\u8be5\u8def\u5f84<\/span><br \/>\n  LV Name                webapp01                          <span class=\"token comment\"># \u903b\u8f91\u5377\u540d\u79f0<\/span><br \/>\n  VG Name                webapp                            <span class=\"token comment\"># \u5f52\u5c5e\u7684\u5377\u7ec4\u540d\u79f0<\/span><br \/>\n  LV UUID                YqF1zd-POfx-xyQU-NERg-Rlqp-k23d-LFTL9Q  <span class=\"token comment\"># \u903b\u8f91\u5377\u552f\u4e00\u6807\u8bc6<\/span><br \/>\n  LV Write Access        read\/write                        <span class=\"token comment\"># \u6743\u9650&#xff1a;\u6b63\u5e38\u53ef\u8bfb\u53ef\u5199<\/span><br \/>\n  LV Creation host, <span class=\"token function\">time<\/span> server.fangbing.cloud, <span class=\"token number\">2026<\/span>-08-01 <span class=\"token number\">15<\/span>:10:56 &#043;0800  <span class=\"token comment\"># \u521b\u5efa\u4e3b\u673a\u4e0e\u65f6\u95f4<\/span><br \/>\n  LV Status              available                         <span class=\"token comment\"># \u72b6\u6001&#xff1a;\u53ef\u7528\u3001\u6b63\u5e38<\/span><br \/>\n  <span class=\"token comment\"># open                 0                                 # \u88ab\u8fdb\u7a0b\u6302\u8f7d\u6253\u5f00\u6b21\u6570&#xff0c;0\u4ee3\u8868\u5f53\u524d\u672a\u6302\u8f7d<\/span><br \/>\n  LV Size                <span class=\"token number\">5.00<\/span> GiB                          <span class=\"token comment\"># \u903b\u8f91\u5377\u603b\u5927\u5c0f5G<\/span><br \/>\n  Current LE             <span class=\"token number\">1280<\/span>                              <span class=\"token comment\"># \u5360\u7528LE\u6570\u91cf&#xff0c;LE\u548cVG\u7684PE\u4e00\u4e00\u5bf9\u5e94<\/span><br \/>\n  Segments               <span class=\"token number\">1<\/span>                                 <span class=\"token comment\"># \u7a7a\u95f4\u8fde\u7eed\u4e3a1\u6bb5&#xff0c;\u65e0\u788e\u7247\u5316\u5206\u6563<\/span><br \/>\n  Allocation             inherit                           <span class=\"token comment\"># \u7a7a\u95f4\u5206\u914d\u7b56\u7565&#xff1a;\u7ee7\u627f\u5377\u7ec4\u9ed8\u8ba4\u7b56\u7565<\/span><br \/>\n  Read ahead sectors     auto                              <span class=\"token comment\"># \u9884\u8bfb\u6247\u533a\u81ea\u52a8\u8c03\u8282<\/span><br \/>\n  &#8211; currently <span class=\"token builtin class-name\">set<\/span> to     <span class=\"token number\">8192<\/span>                              <span class=\"token comment\"># \u5f53\u524d\u9884\u8bfb\u6247\u533a\u6570\u503c<\/span><br \/>\n  Block device           <span class=\"token number\">253<\/span>:3                             <span class=\"token comment\"># \u5185\u6838\u4e3b\u6b21\u8bbe\u5907\u53f7<\/span><\/p>\n<p>\u67e5\u770b\u7269\u7406\u5377\u7a7a\u95f4\u5360\u7528\u72b6\u6001&#xff0c;\u9a8c\u8bc1\u8de8\u76d8\u5b58\u50a8\u7279\u6027&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:16:18<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvs<\/span><br \/>\n  PV         VG     Fmt  Attr PSize    PFree<br \/>\n  \/dev\/sda2  centos lvm2 a&#8211;  <span class=\"token operator\">&lt;<\/span><span class=\"token number\">199<\/span>.00g   <span class=\"token number\">4<\/span>.00m<br \/>\n  \/dev\/sdb   webapp lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">15<\/span>.00g<br \/>\n  \/dev\/sdc   dbapp  lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g      <span class=\"token number\">0<\/span><br \/>\n  \/dev\/sdd   dbapp  lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g  <span class=\"token number\">14<\/span>.99g<\/p>\n<p>\u67e5\u770b\u78c1\u76d8\u4e0e\u903b\u8f91\u5377\u6302\u8f7d\u5173\u7cfb&#xff0c;\u786e\u8ba4dbapp01\u8de8sdc\u3001sdd\u4e24\u5757\u786c\u76d8&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:18:03<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lsblk \/dev\/sd[b-d]<\/span><br \/>\nNAME              MAJ:MIN RM SIZE RO TYPE MOUNTPOINT<br \/>\nsdb                 <span class=\"token number\">8<\/span>:16   <span class=\"token number\">0<\/span>  20G  <span class=\"token number\">0<\/span> disk<br \/>\n\u2514\u2500webapp-webapp01 <span class=\"token number\">253<\/span>:3    <span class=\"token number\">0<\/span>   5G  <span class=\"token number\">0<\/span> lvm<br \/>\nsdc                 <span class=\"token number\">8<\/span>:32   <span class=\"token number\">0<\/span>  20G  <span class=\"token number\">0<\/span> disk<br \/>\n\u2514\u2500dbapp-dbapp01   <span class=\"token number\">253<\/span>:4    <span class=\"token number\">0<\/span>  25G  <span class=\"token number\">0<\/span> lvm<br \/>\nsdd                 <span class=\"token number\">8<\/span>:48   <span class=\"token number\">0<\/span>  20G  <span class=\"token number\">0<\/span> disk<br \/>\n\u2514\u2500dbapp-dbapp01   <span class=\"token number\">253<\/span>:4    <span class=\"token number\">0<\/span>  25G  <span class=\"token number\">0<\/span> lvm  <\/p>\n<h4>4.7 \u903b\u8f91\u5377\u683c\u5f0f\u5316\u4e0e\u6c38\u4e45\u6302\u8f7d<\/h4>\n<p><span class=\"token comment\"># \u683c\u5f0f\u5316\u4e3aXFS\u6587\u4ef6\u7cfb\u7edf<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:18:40<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkfs.xfs \/dev\/webapp\/webapp01<\/span><\/p>\n<p><span class=\"token comment\"># \u521b\u5efa\u6302\u8f7d\u76ee\u5f55\u5e76\u4e34\u65f6\u6302\u8f7d<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;centos7 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkdir -p \/usr\/share\/nginx\/html<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:20:35<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mount \/dev\/webapp\/webapp01 \/usr\/share\/nginx\/html<\/span><\/p>\n<p>\u6c38\u4e45\u6302\u8f7d&#xff08;\u5f00\u673a\u81ea\u542f&#xff09;&#xff1a;\u7f16\u8f91fstab\u6587\u4ef6&#xff0c;\u6dfb\u52a0\u6302\u8f7d\u914d\u7f6e<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:21:01<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vim \/etc\/fstab<\/span><br \/>\n<span class=\"token comment\"># \u65b0\u589e\u5982\u4e0b\u5185\u5bb9<\/span><br \/>\n\/dev\/webapp\/webapp01  \/usr\/share\/nginx\/html  xfs  defaults  <span class=\"token number\">0<\/span>  <span class=\"token number\">0<\/span><\/p>\n<h4>4.8 LVM\u5168\u5957\u6e05\u7406\u5220\u9664\u64cd\u4f5c<\/h4>\n<p>\u5b9e\u9a8c\u7ed3\u675f\u540e&#xff0c;\u53ef\u6309 \u5378\u8f7d\u2192\u5220LV\u2192\u5220VG\u2192\u5220PV \u987a\u5e8f\u6e05\u7406\u73af\u5883&#xff1a;<\/p>\n<p><span class=\"token comment\"># 1. \u5378\u8f7d\u6302\u8f7d\u76ee\u5f55<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:21:01<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># umount \/usr\/share\/nginx\/html<\/span><\/p>\n<p><span class=\"token comment\"># 2. \u5220\u9664\u6240\u6709\u903b\u8f91\u5377<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:22:34<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvremove \/dev\/webapp\/webapp01 \/dev\/dbapp\/dbapp01<\/span><br \/>\nDo you really want to remove active logical volume webapp\/webapp01? <span class=\"token punctuation\">[<\/span>y\/n<span class=\"token punctuation\">]<\/span>: y<br \/>\n  Logical volume <span class=\"token string\">&#034;webapp01&#034;<\/span> successfully removed<br \/>\nDo you really want to remove active logical volume dbapp\/data01? <span class=\"token punctuation\">[<\/span>y\/n<span class=\"token punctuation\">]<\/span>: y<br \/>\n  Logical volume <span class=\"token string\">&#034;data01&#034;<\/span> successfully removed<\/p>\n<p><span class=\"token comment\"># 3. \u5220\u9664\u5377\u7ec4<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:23:47<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgremove webapp dbapp <\/span><br \/>\n  Volume group <span class=\"token string\">&#034;webapp&#034;<\/span> successfully removed<br \/>\n  Volume group <span class=\"token string\">&#034;dbapp&#034;<\/span> successfully removed<\/p>\n<p><span class=\"token comment\"># 4. \u6e05\u9664\u7269\u7406\u5377\u6807\u8bc6&#xff0c;\u8fd8\u539f\u7a7a\u767d\u78c1\u76d8<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:24:59<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvremove \/dev\/sd[b-d]<\/span><br \/>\n  Labels on physical volume <span class=\"token string\">&#034;\/dev\/sdb&#034;<\/span> successfully wiped.<br \/>\n  Labels on physical volume <span class=\"token string\">&#034;\/dev\/sdc&#034;<\/span> successfully wiped.<br \/>\n  Labels on physical volume <span class=\"token string\">&#034;\/dev\/sdd&#034;<\/span> successfully wiped.<\/p>\n<h3>\u4e94\u3001\u5377\u7ec4 VG \u6269\u5bb9\u4e0e\u7f29\u51cf\u5b9e\u64cd<\/h3>\n<p>\u5377\u7ec4\u4f5c\u4e3a\u5b58\u50a8\u8d44\u6e90\u6c60&#xff0c;\u652f\u6301\u52a8\u6001\u65b0\u589e\u78c1\u76d8\u6269\u5bb9\u3001\u79fb\u9664\u7a7a\u95f2\u78c1\u76d8\u7f29\u5bb9&#xff0c;\u9002\u914d\u5b58\u50a8\u5bb9\u91cf\u52a8\u6001\u8c03\u6574\u573a\u666f\u3002<\/p>\n<h4>5.1 \u73af\u5883\u91cd\u7f6e<\/h4>\n<p><span class=\"token comment\"># \u521d\u59cb\u5316PV\u3001\u521b\u5efa\u57fa\u7840\u5377\u7ec4\u4e0e\u903b\u8f91\u5377<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:25:28<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgcreate webapp \/dev\/sdb<\/span><br \/>\n  Physical volume <span class=\"token string\">&#034;\/dev\/sdb&#034;<\/span> successfully created.<br \/>\n  Volume group <span class=\"token string\">&#034;webapp&#034;<\/span> successfully created<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:26:17<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvcreate -n webapp01 -L 10G webapp <\/span><br \/>\nWARNING: xfs signature detected on \/dev\/webapp\/webapp01 at offset <span class=\"token number\">0<\/span>. Wipe it? <span class=\"token punctuation\">[<\/span>y\/n<span class=\"token punctuation\">]<\/span>: y<br \/>\n  Wiping xfs signature on \/dev\/webapp\/webapp01.<br \/>\n  Logical volume <span class=\"token string\">&#034;webapp01&#034;<\/span> created.<\/p>\n<p>\u5b9e\u64cd\u6ce8\u89e3&#xff1a;vgcreate \u547d\u4ee4\u53ef\u81ea\u52a8\u5c06\u7a7a\u767d\u78c1\u76d8\u521d\u59cb\u5316\u4e3aPV&#xff0c;\u65e0\u9700\u5355\u72ec\u6267\u884c pvcreate&#xff0c;\u7b80\u5316\u5b9e\u64cd\u6b65\u9aa4\u3002<\/p>\n<h4>5.2 \u5377\u7ec4\u6269\u5bb9&#xff08;vgextend&#xff09;<\/h4>\n<p>\u5377\u7ec4\u7a7a\u95f4\u4e0d\u8db3\u65f6&#xff0c;\u53ef\u65b0\u589e\u7269\u7406\u78c1\u76d8\u52a0\u5165\u5377\u7ec4&#xff0c;\u6269\u5145\u5b58\u50a8\u6c60\u5bb9\u91cf&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:26:55<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgextend webapp \/dev\/sd[cd]<\/span><br \/>\n  Physical volume <span class=\"token string\">&#034;\/dev\/sdc&#034;<\/span> successfully created.<br \/>\n  Physical volume <span class=\"token string\">&#034;\/dev\/sdd&#034;<\/span> successfully created.<br \/>\n  Volume group <span class=\"token string\">&#034;webapp&#034;<\/span> successfully extended<\/p>\n<h4>5.3 \u5377\u7ec4\u7f29\u51cf&#xff08;vgreduce&#xff09;<\/h4>\n<p>\u9700\u79fb\u9664\u5377\u7ec4\u5185\u591a\u4f59\u7269\u7406\u78c1\u76d8\u65f6&#xff0c;\u9700\u4fdd\u8bc1\u79fb\u9664\u78c1\u76d8\u65e0\u6570\u636e\u5360\u7528&#xff0c;\u5426\u5219\u62a5\u9519\u3002\u82e5\u78c1\u76d8\u5df2\u5b58\u6570\u636e&#xff0c;\u9700\u5148\u8fc1\u79fb\u6570\u636e\u3002<\/p>\n<p>\u67e5\u770b\u78c1\u76d8\u5360\u7528\u72b6\u6001&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:38:52<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvs<\/span><br \/>\n  PV         VG     Fmt  Attr PSize   PFree<br \/>\n  \/dev\/sdb   webapp   lvm2 a&#8211;  <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">10<\/span>.00g <span class=\"token comment\"># \u78c1\u76d8\u5df2\u5360\u7528\u7a7a\u95f4<\/span><br \/>\n  \/dev\/sdc   webapp   lvm2 a&#8211;  <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g<br \/>\n  \/dev\/sdd   webapp   lvm2 a&#8211;  <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g<\/p>\n<p>\u76f4\u63a5\u79fb\u9664\u5df2\u5360\u7528\u78c1\u76d8\u4f1a\u62a5\u9519&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:39:13<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgreduce webapp \/dev\/sdb <\/span><br \/>\n  Physical volume <span class=\"token string\">&#034;\/dev\/sdb&#034;<\/span> still <span class=\"token keyword\">in<\/span> use<\/p>\n<p>\u89e3\u51b3\u65b9\u6848&#xff1a;\u8fc1\u79fb\u78c1\u76d8\u6570\u636e<\/p>\n<p><span class=\"token comment\"># \u5c06sdb\u6570\u636e\u8fc1\u79fb\u81f3\u5377\u7ec4\u5185\u5176\u4ed6\u78c1\u76d8<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:41:52<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvmove \/dev\/sdb \/dev\/sdd<\/span><br \/>\n  \/dev\/sdb: Moved: <span class=\"token number\">0.51<\/span>%<br \/>\n  \/dev\/sdb: Moved: <span class=\"token number\">100.00<\/span>%<\/p>\n<p>\u6570\u636e\u8fc1\u79fb\u5b8c\u6210\u540e&#xff0c;\u6210\u529f\u7f29\u51cf\u5377\u7ec4\u3001\u79fb\u9664\u78c1\u76d8&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:42:52<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgreduce webapp \/dev\/sdb<\/span><br \/>\n  Removed <span class=\"token string\">&#034;\/dev\/sdb&#034;<\/span> from volume group <span class=\"token string\">&#034;webapp&#034;<\/span><\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:43:16<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvs<\/span><br \/>\n  PV         VG     Fmt  Attr PSize    PFree<br \/>\n  \/dev\/sda2  centos lvm2 a&#8211;  <span class=\"token operator\">&lt;<\/span><span class=\"token number\">199<\/span>.00g   <span class=\"token number\">4<\/span>.00m<br \/>\n  \/dev\/sdb          lvm2 &#8212;    <span class=\"token number\">20<\/span>.00g  <span class=\"token number\">20<\/span>.00g<br \/>\n  \/dev\/sdc   webapp lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g<br \/>\n  \/dev\/sdd   webapp lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">10<\/span>.00g<\/p>\n<h3>\u516d\u3001\u903b\u8f91\u5377 LV \u6269\u5bb9\u4e0e\u7f29\u51cf\u5b9e\u64cd<\/h3>\n<p>\u5377\u7ec4\u7a7a\u95f4\u5145\u8db3\u65f6&#xff0c;\u53ef\u81ea\u7531\u8c03\u6574\u903b\u8f91\u5377\u5927\u5c0f&#xff0c;\u652f\u6301\u5728\u7ebf\u6269\u5bb9\u3001\u79bb\u7ebf\u7f29\u5bb9\u3002<\/p>\n<h4>6.1 \u903b\u8f91\u5377\u6269\u5bb9<\/h4>\n<p><span class=\"token comment\"># \u7ed9\u903b\u8f91\u5377\u65b0\u589e2G\u7a7a\u95f4<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:43:22<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvextend -L &#043;2G \/dev\/webapp\/webapp01 <\/span><br \/>\n  Size of logical volume webapp\/webapp01 changed from <span class=\"token number\">10.00<\/span> GiB <span class=\"token punctuation\">(<\/span><span class=\"token number\">2560<\/span> extents<span class=\"token punctuation\">)<\/span> to <span class=\"token number\">12.00<\/span> GiB <span class=\"token punctuation\">(<\/span><span class=\"token number\">3072<\/span> extents<span class=\"token punctuation\">)<\/span>.<br \/>\n  Logical volume webapp\/webapp01 successfully resized.<\/p>\n<p><span class=\"token comment\"># \u67e5\u770b\u6269\u5bb9\u540e\u72b6\u6001<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:45:01<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvs \/dev\/webapp\/webapp01 <\/span><br \/>\n  LV       VG     Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert<br \/>\n  webapp01 webapp -wi-a&#8212;&#8211; <span class=\"token number\">12<\/span>.00g<\/p>\n<h4>6.2 \u903b\u8f91\u5377\u7f29\u51cf<\/h4>\n<p>\u7f29\u5bb9\u5b58\u5728\u6570\u636e\u98ce\u9669&#xff0c;\u7cfb\u7edf\u4f1a\u5f3a\u5236\u544a\u8b66&#xff0c;\u9700\u786e\u8ba4\u6267\u884c&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:45:34<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvreduce -L -2G \/dev\/webapp\/webapp01 <\/span><br \/>\n  WARNING: Reducing active logical volume to <span class=\"token number\">10.00<\/span> GiB.<br \/>\n  THIS MAY DESTROY YOUR DATA <span class=\"token punctuation\">(<\/span>filesystem etc.<span class=\"token punctuation\">)<\/span><br \/>\nDo you really want to reduce webapp\/webapp01? <span class=\"token punctuation\">[<\/span>y\/n<span class=\"token punctuation\">]<\/span>: y<br \/>\n  Size of logical volume webapp\/webapp01 changed from <span class=\"token number\">12.00<\/span> GiB <span class=\"token punctuation\">(<\/span><span class=\"token number\">3072<\/span> extents<span class=\"token punctuation\">)<\/span> to <span class=\"token number\">10.00<\/span> GiB <span class=\"token punctuation\">(<\/span><span class=\"token number\">2560<\/span> extents<span class=\"token punctuation\">)<\/span>.<br \/>\n  Logical volume webapp\/webapp01 successfully resized.<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:46:35<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvs \/dev\/webapp\/webapp01 <\/span><br \/>\n  LV       VG     Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert<br \/>\n  webapp01 webapp -wi-a&#8212;&#8211; <span class=\"token number\">10<\/span>.00g<\/p>\n<h3>\u4e03\u3001\u6587\u4ef6\u7cfb\u7edf\u6269\u5bb9\u4e0e\u7f29\u51cf&#xff08;XFS\/EXT4\u5dee\u5f02\u5316&#xff09;<\/h3>\n<p>\u91cd\u70b9&#xff1a;\u903b\u8f91\u5377\u7a7a\u95f4\u8c03\u6574\u540e&#xff0c;\u5fc5\u987b\u540c\u6b65\u8c03\u6574\u6587\u4ef6\u7cfb\u7edf&#xff0c;\u5bb9\u91cf\u624d\u80fd\u751f\u6548&#xff0c;XFS\u4e0eEXT4\u6587\u4ef6\u7cfb\u7edf\u89c4\u5219\u5b8c\u5168\u4e0d\u540c\u3002<\/p>\n<h4>7.1 XFS \u6587\u4ef6\u7cfb\u7edf&#xff08;\u4ec5\u652f\u6301\u6269\u5bb9&#xff0c;\u4e0d\u652f\u6301\u7f29\u5bb9&#xff09;<\/h4>\n<p>XFS\u662fCentOS 7&#043;\u9ed8\u8ba4\u6587\u4ef6\u7cfb\u7edf&#xff0c;\u53ea\u652f\u6301\u5728\u7ebf\u6269\u5bb9&#xff0c;\u65e0\u6cd5\u7f29\u51cf\u5bb9\u91cf\u3002<\/p>\n<p><span class=\"token comment\"># \u73af\u5883\u51c6\u5907&#xff1a;\u683c\u5f0f\u5316\u3001\u6302\u8f7d\u3001\u5199\u5165\u6d4b\u8bd5\u6570\u636e<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:48:25<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkfs.xfs -f \/dev\/webapp\/webapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:48:38<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkdir -p \/usr\/share\/nginx\/html\/<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:49:10<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mount \/dev\/webapp\/webapp01 \/usr\/share\/nginx\/html\/<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:49:33<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># cp \/etc\/ho* \/usr\/share\/nginx\/html\/<\/span><\/p>\n<p>\u65b9\u5f0f1&#xff1a;\u5206\u6b65\u6269\u5bb9&#xff08;\u5148\u6269LV&#xff0c;\u518d\u6269\u6587\u4ef6\u7cfb\u7edf&#xff09;<\/p>\n<p><span class=\"token comment\"># 1. \u903b\u8f91\u5377\u6269\u5bb9\u81f325G<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:52:18<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvextend -L 25G \/dev\/webapp\/webapp01<\/span><\/p>\n<p><span class=\"token comment\"># 2. XFS\u6587\u4ef6\u7cfb\u7edf\u5728\u7ebf\u6269\u5bb9\u751f\u6548<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:53:12<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># xfs_growfs \/usr\/share\/nginx\/html\/<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:53:46<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># df -hT \/usr\/share\/nginx\/html\/<\/span><br \/>\n\u6587\u4ef6\u7cfb\u7edf                    \u7c7b\u578b  \u5bb9\u91cf  \u5df2\u7528  \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9<br \/>\n\/dev\/mapper\/webapp-webapp01 xfs    25G   33M   25G    <span class=\"token number\">1<\/span>% \/usr\/share\/nginx\/html<\/p>\n<p>\u65b9\u5f0f2&#xff1a;\u4e00\u952e\u6269\u5bb9&#xff08;\u81ea\u52a8\u540c\u6b65LV\u4e0e\u6587\u4ef6\u7cfb\u7edf&#xff09;<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">15<\/span>:54:00<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvextend -rL 30G \/dev\/webapp\/webapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:07:59<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># df -hT \/usr\/share\/nginx\/html\/<\/span><br \/>\n\u6587\u4ef6\u7cfb\u7edf                    \u7c7b\u578b  \u5bb9\u91cf  \u5df2\u7528  \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9<br \/>\n\/dev\/mapper\/webapp-webapp01 xfs    30G   33M   30G    <span class=\"token number\">1<\/span>% \/usr\/share\/nginx\/html<\/p>\n<h4>7.2 EXT4 \u6587\u4ef6\u7cfb\u7edf&#xff08;\u652f\u6301\u6269\u5bb9\u3001\u7f29\u5bb9&#xff09;<\/h4>\n<p>EXT4\u517c\u5bb9\u6027\u66f4\u5f3a&#xff0c;\u652f\u6301\u53cc\u5411\u5bb9\u91cf\u8c03\u6574&#xff0c;\u7f29\u5bb9\u5fc5\u987b\u79bb\u7ebf\u64cd\u4f5c\u3002<\/p>\n<p><span class=\"token comment\"># \u73af\u5883\u91cd\u7f6e\u4e3aEXT4\u683c\u5f0f<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:08:04<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># umount \/dev\/webapp\/webapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:10:05<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkfs.ext4 \/dev\/webapp\/webapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:10:35<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mount \/dev\/webapp\/webapp01 \/usr\/share\/nginx\/html\/<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:11:20<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># cp \/etc\/host* \/usr\/share\/nginx\/html\/<\/span><\/p>\n<p>EXT4\u6269\u5bb9\u64cd\u4f5c&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u5206\u6b65\u6269\u5bb9<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:11:37<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvextend -L 32G \/dev\/webapp\/webapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:12:43<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># resize2fs \/dev\/webapp\/webapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:13:11<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># df -hT \/usr\/share\/nginx\/html\/<\/span><br \/>\n\u6587\u4ef6\u7cfb\u7edf                    \u7c7b\u578b  \u5bb9\u91cf  \u5df2\u7528  \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9<br \/>\n\/dev\/mapper\/webapp-webapp01 ext4   32G   49M   30G    <span class=\"token number\">1<\/span>% \/usr\/share\/nginx\/html<\/p>\n<p><span class=\"token comment\"># \u4e00\u952e\u6269\u5bb9<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:16:22<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvextend -rL 35G \/dev\/webapp\/webapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:16:31<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># df -hT \/usr\/share\/nginx\/html\/<\/span><br \/>\n\u6587\u4ef6\u7cfb\u7edf                    \u7c7b\u578b  \u5bb9\u91cf  \u5df2\u7528  \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9<br \/>\n\/dev\/mapper\/webapp-webapp01 ext4   35G   48M   33G    <span class=\"token number\">1<\/span>% \/usr\/share\/nginx\/html<\/p>\n<h4>7.3 EXT4 \u6587\u4ef6\u7cfb\u7edf\u79bb\u7ebf\u7f29\u5bb9\u5b8c\u6574\u6d41\u7a0b<\/h4>\n<p>\u6838\u5fc3\u6ce8\u610f\u4e8b\u9879&#xff1a;EXT4\u4e0d\u652f\u6301\u5728\u7ebf\u7f29\u5bb9&#xff0c;\u5fc5\u987b\u5378\u8f7d\u6587\u4ef6\u7cfb\u7edf\u3001\u68c0\u6d4b\u78c1\u76d8\u3001\u5148\u7f29\u6587\u4ef6\u7cfb\u7edf\u3001\u540e\u7f29LV&#xff0c;\u4e14\u7f29\u5bb9\u540e\u5bb9\u91cf\u4e0d\u80fd\u5c0f\u4e8e\u5df2\u7528\u7a7a\u95f4\u3002<\/p>\n<p><span class=\"token comment\"># 1. \u5378\u8f7d\u6302\u8f7d<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:17:03<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># umount \/usr\/share\/nginx\/html\/ <\/span><\/p>\n<p><span class=\"token comment\"># 2. \u5f3a\u5236\u68c0\u6d4b\u6587\u4ef6\u7cfb\u7edf\u5b8c\u6574\u6027<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:17:47<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># e2fsck -f \/dev\/webapp\/webapp01 <\/span><br \/>\ne2fsck <span class=\"token number\">1.42<\/span>.9 <span class=\"token punctuation\">(<\/span><span class=\"token number\">28<\/span>-Dec-2013<span class=\"token punctuation\">)<\/span><br \/>\n\u7b2c\u4e00\u6b65: \u68c0\u67e5inode,\u5757,\u548c\u5927\u5c0f<br \/>\n\u7b2c\u4e8c\u6b65: \u68c0\u67e5\u76ee\u5f55\u7ed3\u6784<br \/>\n\u7b2c3\u6b65: \u68c0\u67e5\u76ee\u5f55\u8fde\u63a5\u6027<br \/>\nPass <span class=\"token number\">4<\/span>: Checking reference counts<br \/>\n\u7b2c5\u6b65: \u68c0\u67e5\u7c07\u6982\u8981\u4fe1\u606f<br \/>\n\/dev\/webapp\/webapp01: <span class=\"token number\">16<\/span>\/2293760 files <span class=\"token punctuation\">(<\/span><span class=\"token number\">0.0<\/span>% non-contiguous<span class=\"token punctuation\">)<\/span>, <span class=\"token number\">189047<\/span>\/9175040 blocks<\/p>\n<p><span class=\"token comment\"># 3. \u7f29\u51cf\u6587\u4ef6\u7cfb\u7edf\u81f310G<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;centos7 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># resize2fs \/dev\/webapp\/webapp01 10G<\/span><\/p>\n<p><span class=\"token comment\"># 4. \u7f29\u51cf\u903b\u8f91\u5377\u81f310G<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:18:06<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># resize2fs \/dev\/webapp\/webapp01 10G<\/span><\/p>\n<p><span class=\"token comment\"># 5. \u91cd\u65b0\u6302\u8f7d\u9a8c\u8bc1<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:19:11<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mount \/dev\/webapp\/webapp01 \/usr\/share\/nginx\/html\/<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:19:53<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># df -hT \/usr\/share\/nginx\/html\/<\/span><br \/>\n\u6587\u4ef6\u7cfb\u7edf                    \u7c7b\u578b  \u5bb9\u91cf  \u5df2\u7528  \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9<br \/>\n\/dev\/mapper\/webapp-webapp01 ext4  <span class=\"token number\">9<\/span>.8G   37M  <span class=\"token number\">9<\/span>.2G    <span class=\"token number\">1<\/span>% \/usr\/share\/nginx\/html<\/p>\n<h3>\u516b\u3001LVM\u5feb\u7167\u5907\u4efd\u4e0e\u6062\u590d<\/h3>\n<p>LVM\u5feb\u7167\u662f\u751f\u4ea7\u8fd0\u7ef4\u4e2d\u975e\u5e38\u5b9e\u7528\u7684\u6570\u636e\u77ac\u65f6\u5907\u4efd\u529f\u80fd&#xff0c;\u7c7b\u4f3c\u4e8e\u865a\u62df\u673a\u5feb\u7167\u3002\u5b83\u53ef\u4ee5\u8bb0\u5f55\u903b\u8f91\u5377\u67d0\u4e00\u65f6\u523b\u7684\u5b8c\u6574\u6570\u636e\u72b6\u6001&#xff0c;\u540e\u7eed\u65e0\u8bba\u539f\u6587\u4ef6\u8bef\u5220\u3001\u7be1\u6539\u3001\u635f\u574f&#xff0c;\u90fd\u53ef\u4ee5\u901a\u8fc7\u5feb\u7167\u5feb\u901f\u56de\u6eda\u6062\u590d\u6570\u636e&#xff0c;\u4e14\u5feb\u7167\u521b\u5efa\u901f\u5ea6\u6781\u5feb\u3001\u5360\u7528\u7a7a\u95f4\u5c0f\u3002<\/p>\n<p>LVM\u5feb\u7167\u539f\u7406&#xff1a;\u5feb\u7167\u91c7\u7528\u5199\u65f6\u590d\u5236\u673a\u5236&#xff0c;\u521b\u5efa\u5feb\u7167\u77ac\u95f4\u53ea\u8bb0\u5f55\u6587\u4ef6\u7cfb\u7edf\u5143\u6570\u636e&#xff0c;\u4e0d\u590d\u5236\u5168\u91cf\u6570\u636e&#xff1b;\u53ea\u6709\u5f53\u539fLV\u6570\u636e\u53d1\u751f\u4fee\u6539\u65f6&#xff0c;\u624d\u4f1a\u5c06\u65e7\u6570\u636e\u5199\u5165\u5feb\u7167\u5377&#xff0c;\u6781\u5927\u8282\u7701\u78c1\u76d8\u7a7a\u95f4\u3002<\/p>\n<p>\u6838\u5fc3\u9650\u5236&#xff1a;\u5feb\u7167\u5bb9\u91cf\u65e0\u9700\u7b49\u4e8e\u539fLV&#xff0c;\u4f46\u4e0d\u80fd\u5c0f\u4e8e\u539fLV\u5df2\u4f7f\u7528\u5bb9\u91cf&#xff0c;\u5426\u5219\u5feb\u7167\u4f1a\u635f\u574f\u5931\u6548\u3002<\/p>\n<h4>8.1 \u521b\u5efaLVM\u5feb\u7167<\/h4>\n<p>\u57fa\u4e8e\u5df2\u6709\u903b\u8f91\u5377 \/dev\/webapp\/webapp01 \u521b\u5efa\u53ea\u8bfb\u5feb\u7167&#xff0c;\u5feb\u7167\u5927\u5c0f\u8bbe\u7f6e\u4e3a10G&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u521b\u5efa\u5feb\u7167&#xff1a;-s \u5feb\u7167\u6a21\u5f0f -n \u5feb\u7167\u540d\u79f0 -L \u5feb\u7167\u5bb9\u91cf<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:27:34<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvcreate -s -n webapp01-snap1 -L 3G \/dev\/webapp\/webapp01<\/span><br \/>\n  Logical volume <span class=\"token string\">&#034;webapp01-snap1&#034;<\/span> created.<\/p>\n<h4>8.2 \u6302\u8f7d\u5feb\u7167\u67e5\u770b\u5386\u53f2\u6570\u636e<\/h4>\n<p>\u5feb\u7167\u521b\u5efa\u5b8c\u6210\u540e\u53ef\u76f4\u63a5\u6302\u8f7d&#xff0c;\u67e5\u770b\u5feb\u7167\u65f6\u523b\u7684\u539f\u59cb\u6570\u636e&#xff0c;\u4e0d\u53d7\u539f\u5377\u540e\u7eed\u6570\u636e\u53d8\u66f4\u5f71\u54cd&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u521b\u5efa\u5feb\u7167\u6302\u8f7d\u76ee\u5f55\u5e76\u6302\u8f7d<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:27:55<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkdir -p \/webapp\/snap<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:29:01<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mount \/dev\/webapp\/webapp01-snap1 \/webapp\/snap<\/span><\/p>\n<p><span class=\"token comment\"># \u67e5\u770b\u5feb\u7167\u5185\u539f\u59cb\u6570\u636e<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:29:18<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ls  \/webapp\/snap<\/span><br \/>\nhost.conf  <span class=\"token function\">hostname<\/span>  hosts  hosts.allow  hosts.deny  lost&#043;found<\/p>\n<h4>8.3 \u6a21\u62df\u539f\u5377\u6570\u636e\u635f\u574f\/\u8bef\u5220<\/h4>\n<p>\u5728\u539f\u903b\u8f91\u5377\u4e2d\u65b0\u589e\u3001\u5220\u9664\u6587\u4ef6&#xff0c;\u6a21\u62df\u4e1a\u52a1\u6570\u636e\u8bef\u64cd\u4f5c\u573a\u666f&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u539f\u5377\u65b0\u589e\u6d4b\u8bd5\u6587\u4ef6<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:29:31<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># echo &#034;test data error&#034; &gt; \/usr\/share\/nginx\/html\/error.txt<\/span><\/p>\n<p><span class=\"token comment\"># \u8bef\u5220\u539f\u6709\u4e1a\u52a1\u6570\u636e<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:31:53<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># rm -f \/usr\/share\/nginx\/html\/host*<\/span><\/p>\n<p><span class=\"token comment\"># \u67e5\u770b\u635f\u574f\u540e\u7684\u539f\u5377\u6570\u636e<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:32:19<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ls \/usr\/share\/nginx\/html\/<\/span><br \/>\nerror.txt  lost&#043;found<\/p>\n<h4>8.4 \u901a\u8fc7\u5feb\u7167\u6062\u590d\u6570\u636e<\/h4>\n<p>\u5feb\u7167\u6570\u636e\u5b8c\u597d\u4fdd\u7559\u521b\u5efa\u65f6\u523b\u7684\u6240\u6709\u6587\u4ef6&#xff0c;\u53ef\u76f4\u63a5\u62f7\u8d1d\u6062\u590d\u4e22\u5931\u6570\u636e&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u5feb\u7167\u6570\u636e\u8986\u76d6\u6062\u590d\u81f3\u539f\u5377<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:32:39<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># cp -r \/webapp\/snap\/* \/usr\/share\/nginx\/html\/<\/span><\/p>\n<p><span class=\"token comment\"># \u9a8c\u8bc1\u6570\u636e\u6062\u590d\u5b8c\u6210<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:33:43<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ls \/usr\/share\/nginx\/html\/<\/span><br \/>\nerror.txt  host.conf  <span class=\"token function\">hostname<\/span>  hosts  hosts.allow  hosts.deny  lost&#043;found<\/p>\n<h4>8.5 \u5378\u8f7d\u5e76\u5220\u9664\u5feb\u7167&#xff08;\u751f\u4ea7\u89c4\u8303&#xff09;<\/h4>\n<p>\u5feb\u7167\u4e3a\u4e00\u6b21\u6027\u6062\u590d\u5de5\u5177&#xff0c;\u6570\u636e\u6062\u590d\u5b8c\u6210\u540e\u9700\u53ca\u65f6\u6e05\u7406&#xff0c;\u91ca\u653e\u5b58\u50a8\u7a7a\u95f4&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u5378\u8f7d\u5feb\u7167<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:34:03<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># umount \/webapp\/snap<\/span><\/p>\n<p><span class=\"token comment\"># \u5220\u9664\u5feb\u7167\u5377<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:34:42<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvremove \/dev\/webapp\/webapp01-snap1 <\/span><br \/>\nDo you really want to remove active logical volume webapp\/webapp01-snap1? <span class=\"token punctuation\">[<\/span>y\/n<span class=\"token punctuation\">]<\/span>: y<br \/>\n  Logical volume <span class=\"token string\">&#034;webapp01-snap1&#034;<\/span> successfully removed<\/p>\n<h3>\u4e5d\u3001LVM &#043; RAID \u878d\u5408\u5b9e\u6218&#xff08;\u9ad8\u53ef\u7528\u5b58\u50a8&#xff09;<\/h3>\n<p>\u666e\u901aLVM\u4ec5\u5b9e\u73b0\u5f39\u6027\u6269\u5bb9&#xff0c;\u65e0\u6570\u636e\u5197\u4f59\u80fd\u529b\u3002\u751f\u4ea7\u73af\u5883\u4e2d\u901a\u5e38 RAID\u8d1f\u8d23\u5bb9\u9519\u3001LVM\u8d1f\u8d23\u7075\u6d3b\u4f38\u7f29&#xff0c;\u7ec4\u5408\u5b9e\u73b0\u9ad8\u53ef\u7528\u3001\u9ad8\u5f39\u6027\u4f01\u4e1a\u5b58\u50a8\u67b6\u6784\u3002\u672c\u8282\u5b9e\u64cd RAID1 \u5197\u4f59\u903b\u8f91\u5377\u3001RAID5\u903b\u8f91\u5377\u521b\u5efa\u3002<\/p>\n<h4>9.1 \u73af\u5883\u91cd\u7f6e\u6e05\u7406<\/h4>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:41:17<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># umount \/dev\/webapp\/webapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:41:36<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvremove -f \/dev\/webapp\/webapp01 <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:42:07<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgremove -f webapp <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:42:19<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvremove -f \/dev\/sd[b-d]<\/span><\/p>\n<h4>9.2 \u521b\u5efa RAID1 \u5197\u4f59\u903b\u8f91\u5377<\/h4>\n<p>RAID1\u5b9e\u73b0\u53cc\u76d8\u955c\u50cf&#xff0c;\u5355\u76d8\u635f\u574f\u6570\u636e\u4e0d\u4e22\u5931\u3001\u4e1a\u52a1\u4e0d\u4e2d\u65ad&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u521b\u5efaRAID1\u7c7b\u578b\u903b\u8f91\u5377&#xff0c;\u5bb9\u91cf15G<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:43:49<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgcreate webapp \/dev\/sd[b-d]<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:43:56<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvcreate &#8211;type raid1 -n webapp01 -L 15G webapp<\/span><\/p>\n<p><span class=\"token comment\"># \u683c\u5f0f\u5316\u5e76\u6302\u8f7d<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:45:32<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkfs.xfs \/dev\/webapp\/webapp01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:45:57<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mount \/dev\/webapp\/webapp01 \/usr\/share\/nginx\/html\/<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:46:39<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># cp \/etc\/host* \/usr\/share\/nginx\/html\/<\/span><\/p>\n<h4>9.3 \u6a21\u62df\u78c1\u76d8\u6545\u969c&#xff0c;\u9a8c\u8bc1\u5bb9\u9519\u80fd\u529b<\/h4>\n<p><span class=\"token comment\"># \u6a21\u62df \/dev\/sdb \u78c1\u76d8\u635f\u574f<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:47:03<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># dd if&#061;\/dev\/zero of&#061;\/dev\/sdd bs&#061;1M count&#061;256<\/span><\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:58:40<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvs | grep webapp<\/span><br \/>\n  WARNING: Device <span class=\"token keyword\">for<\/span> PV UO9G1A-fHzv-YSc8-1lwk-gtT3-9hWS-dJrH71 not found or rejected by a filter.<br \/>\n  Couldn<span class=\"token string\">&#039;t find device with uuid UO9G1A-fHzv-YSc8-1lwk-gtT3-9hWS-dJrH71.<br \/>\n  WARNING: Couldn&#039;<\/span>t <span class=\"token function\">find<\/span> all devices <span class=\"token keyword\">for<\/span> LV webapp\/webapp01_rmeta_0 <span class=\"token keyword\">while<\/span> checking used and assumed devices.<br \/>\n  WARNING: Couldn&#039;t <span class=\"token function\">find<\/span> all devices <span class=\"token keyword\">for<\/span> LV webapp\/webapp01_rimage_0 <span class=\"token keyword\">while<\/span> checking used and assumed devices.<br \/>\n  \/dev\/sdb   webapp lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g<br \/>\n  \/dev\/sdc   webapp lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g   <span class=\"token number\">4<\/span>.99g<br \/>\n  <span class=\"token punctuation\">[<\/span>unknown<span class=\"token punctuation\">]<\/span>  webapp lvm2 a-m   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g   <span class=\"token number\">4<\/span>.99g<\/p>\n<p><span class=\"token comment\"># \u9a8c\u8bc1\u6587\u4ef6\u7cfb\u7edf\u6b63\u5e38\u8bbf\u95ee&#xff0c;\u6570\u636e\u4e0d\u4e22\u5931<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:47:56<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ls \/usr\/share\/nginx\/html\/<\/span><br \/>\nhost.conf  <span class=\"token function\">hostname<\/span>  hosts  hosts.allow  hosts.deny<\/p>\n<h4>9.4 RAID\u6545\u969c\u4fee\u590d\u4e0e\u91cd\u5efa<\/h4>\n<p><span class=\"token comment\"># \u5378\u8f7d\u6587\u4ef6\u7cfb\u7edf<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:48:15<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># umount \/usr\/share\/nginx\/html<\/span><\/p>\n<p><span class=\"token comment\"># \u79fb\u9664\u635f\u574f\u7684\u7269\u7406\u5377<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:52:00<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgreduce &#8211;removemissing webapp &#8211;force<\/span><\/p>\n<p><span class=\"token comment\"># \u91cd\u65b0\u6dfb\u52a0\u78c1\u76d8\u81f3\u5377\u7ec4<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:54:39<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vgextend webapp \/dev\/sdd<\/span><\/p>\n<p><span class=\"token comment\"># \u4fee\u590dRAID1\u955c\u50cf\u3001\u540c\u6b65\u6570\u636e<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">16<\/span>:55:20<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># lvconvert &#8211;repair \/dev\/webapp\/webapp01<\/span><\/p>\n<p><span class=\"token comment\"># \u5237\u65b0PV\u72b6\u6001<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;centos7 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvscan<\/span><\/p>\n<p><span class=\"token comment\"># \u9a8c\u8bc1\u4fee\u590d\u5b8c\u6210<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">17<\/span>:00:42<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># pvs | grep webapp<\/span><br \/>\n  WARNING: Not using lvmetad because a repair <span class=\"token builtin class-name\">command<\/span> was run.<br \/>\n  \/dev\/sdb   webapp lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g   <span class=\"token number\">4<\/span>.99g<br \/>\n  \/dev\/sdc   webapp lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g   <span class=\"token number\">4<\/span>.99g<br \/>\n  \/dev\/sdd   webapp lvm2 a&#8211;   <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g <span class=\"token operator\">&lt;<\/span><span class=\"token number\">20<\/span>.00g<\/p>\n<p><span class=\"token comment\"># \u91cd\u65b0\u6302\u8f7d&#xff0c;\u9a8c\u8bc1\u6570\u636e\u6b63\u5e38<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">17<\/span>:00:52<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mount \/dev\/webapp\/webapp01 \/usr\/share\/nginx\/html\/<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;server ~ <span class=\"token number\">17<\/span>:01:37<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ls \/usr\/share\/nginx\/html\/<\/span><br \/>\nhost.conf  <span class=\"token function\">hostname<\/span>  hosts  hosts.allow  hosts.deny<\/p>\n<h4>9.5 \u751f\u4ea7\u5e38\u7528&#xff1a;RAID5 \u903b\u8f91\u5377\u521b\u5efa\u793a\u4f8b<\/h4>\n<p>RAID5\u517c\u987e\u5bb9\u91cf\u4e0e\u5bb9\u9519&#xff0c;\u9002\u5408\u5927\u5bb9\u91cf\u4e1a\u52a1\u5b58\u50a8&#xff0c;\u547d\u4ee4\u6a21\u677f\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u521b\u5efa RAID5 LV&#xff1a;\u53ef\u75285G\u30013\u6761\u6570\u636e\u5e26\u3001\u6761\u5e26\u5927\u5c0f64K\u3001\u540d\u5b57\u4e3amylv \u3001\u5377\u7ec4\u4e3avg00&#xff08;\u8fd9\u4e2a\u81f3\u5c11\u9700\u89814\u5757\u78c1\u76d8&#xff0c;3\u6761\u6570\u636e\u5e26&#xff0c;1\u4e2a\u6821\u9a8c\u78c1\u76d8&#xff09;<\/span><br \/>\nlvcreate <span class=\"token parameter variable\">&#8211;type<\/span> raid5 <span class=\"token parameter variable\">-L<\/span> 5G <span class=\"token parameter variable\">-i<\/span> <span class=\"token number\">3<\/span> <span class=\"token parameter variable\">-I<\/span> <span class=\"token number\">64<\/span> <span class=\"token parameter variable\">-n<\/span> mylv vg00<\/p>\n<p><span class=\"token comment\"># \u8be6\u7ec6\u67e5\u770b\u6761\u5e26\u3001\u78c1\u76d8\u7ed3\u6784<\/span><br \/>\nlvdisplay <span class=\"token parameter variable\">-m<\/span> \/dev\/vg00\/mylv<\/p>\n<h3>\u5341\u3001\u603b\u7ed3\u4e0e\u751f\u4ea7\u6700\u4f73\u5b9e\u8df5<\/h3>\n<p>1\u3001LVM\u6838\u5fc3\u4ef7\u503c&#xff1a;\u5f7b\u5e95\u89e3\u51b3\u4f20\u7edf\u78c1\u76d8\u5206\u533a\u56fa\u5316\u3001\u65e0\u6cd5\u5728\u7ebf\u6269\u5bb9\u3001\u4e0d\u652f\u6301\u8de8\u76d8\u5b58\u50a8\u7684\u75db\u70b9&#xff0c;\u662fLinux\u670d\u52a1\u5668\u52a8\u6001\u5b58\u50a8\u7684\u884c\u4e1a\u6807\u914d\u65b9\u6848&#xff0c;\u9002\u914d\u7edd\u5927\u591a\u6570\u52a8\u6001\u4e1a\u52a1\u573a\u666f\u3002<\/p>\n<p>2\u3001\u6587\u4ef6\u7cfb\u7edf\u9002\u914d\u89c4\u8303&#xff1a;XFS \u6587\u4ef6\u7cfb\u7edf\u4ec5\u652f\u6301\u5728\u7ebf\u6269\u5bb9\u3001\u4e0d\u652f\u6301\u7f29\u5bb9&#xff1b;EXT4 \u6587\u4ef6\u7cfb\u7edf\u517c\u987e\u6269\u7f29\u5bb9\u3002CentOS 7\u53ca\u4ee5\u4e0a\u7cfb\u7edf\u9ed8\u8ba4\u4f18\u5148\u4f7f\u7528XFS&#xff0c;\u7a33\u5b9a\u6027\u66f4\u5f3a\u3002<\/p>\n<p>3\u3001\u5feb\u7167\u751f\u4ea7\u4f7f\u7528\u89c4\u8303&#xff1a;LVM\u5feb\u7167\u4e3a\u4e34\u65f6\u5e94\u6025\u5907\u4efd\u5de5\u5177&#xff0c;\u4f9d\u6258\u5199\u65f6\u590d\u5236\u673a\u5236\u8282\u7701\u7a7a\u95f4&#xff0c;\u4e0d\u53ef\u957f\u671f\u7559\u5b58\u3002\u6570\u636e\u6062\u590d\u5b8c\u6210\u540e\u9700\u7acb\u5373\u5220\u9664&#xff0c;\u907f\u514d\u5360\u7528\u78c1\u76d8\u7a7a\u95f4\u3001\u5f15\u53d1\u5b58\u50a8\u5f02\u5e38\u3002<\/p>\n<p>4\u3001\u4f01\u4e1a\u9ad8\u53ef\u7528\u5b58\u50a8\u67b6\u6784&#xff1a;\u751f\u4ea7\u6700\u4f18\u7ec4\u5408\u4e3a RAID \u78c1\u76d8\u5bb9\u9519 &#043; LVM 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