{"id":4565,"date":"2025-07-12T09:13:48","date_gmt":"2025-07-12T00:13:48","guid":{"rendered":"https:\/\/eternalsphere.net\/echoes\/?p=4565"},"modified":"2026-06-06T09:42:05","modified_gmt":"2026-06-06T00:42:05","slug":"jzwgh9zp7w2rbkn","status":"publish","type":"post","link":"https:\/\/eternalsphere.net\/echoes\/index.php\/2025\/07\/12\/jzwgh9zp7w2rbkn\/","title":{"rendered":"Linux \u903b\u8f91\u5377\u7ba1\u7406\uff08LVM\uff09\u8d85\u8be6\u7ec6\u89e3\u6790\uff1a\u539f\u7406\u3001\u64cd\u4f5c\u4e0e\u8fdb\u9636\u6280\u5de7"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u903b\u8f91\u5377\u7ba1\u7406\uff08LVM, Logical Volume Manager\uff09\u662f Linux \u7cfb\u7edf\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u5b58\u50a8\u7ba1\u7406\u65b9\u5f0f\uff0c\u5141\u8bb8\u7075\u6d3b\u3001\u9ad8\u6548\u5730\u7ba1\u7406\u78c1\u76d8\u7a7a\u95f4\u3002\u76f8\u6bd4\u4f20\u7edf\u56fa\u5b9a\u5206\u533a\uff0cLVM \u63d0\u4f9b\u4e86\u52a8\u6001\u8c03\u6574\u3001\u8de8\u76d8\u6269\u5bb9\u3001\u5feb\u7167\u7b49\u5148\u8fdb\u529f\u80fd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6587\u5c06\u4ece<strong>\u539f\u7406\u3001\u6838\u5fc3\u6982\u5ff5\u3001\u8be6\u7ec6\u64cd\u4f5c\u6b65\u9aa4\u3001\u5feb\u7167\u3001\u8fc1\u79fb\u3001\u9519\u8bef\u4fee\u590d\u3001\u4e0e\u542f\u52a8\u5173\u7cfb\u3001\u5e38\u89c1\u95ee\u9898\u53ca\u6700\u4f73\u5b9e\u8df5<\/strong>\u7b49\u591a\u4e2a\u5c42\u9762\u8be6\u7ec6\u89e3\u6790\uff0c\u5e2e\u52a9\u6df1\u5165\u638c\u63e1 LVM\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001LVM \u57fa\u7840\u4e0e\u539f\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ec0\u4e48\u662f LVM\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">LVM \u662f Linux \u7684\u903b\u8f91\u5377\u7ba1\u7406\u6846\u67b6\uff0c\u628a\u7269\u7406\u5b58\u50a8\u8d44\u6e90\uff08\u78c1\u76d8\u6216\u5206\u533a\uff09\u62bd\u8c61\u6210\u903b\u8f91\u5377\uff0c\u4fbf\u4e8e\u7075\u6d3b\u7ba1\u7406\u3001\u52a8\u6001\u6269\u5bb9\u3001\u8de8\u76d8\u5b58\u50a8\u7b49\u9700\u6c42\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6838\u5fc3\u6982\u5ff5<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u540d\u79f0<\/th><th>\u89e3\u91ca<\/th><\/tr><\/thead><tbody><tr><td><strong>PV\uff08Physical Volume\uff09<\/strong><\/td><td>\u7269\u7406\u5377\uff0c\u5bf9\u5e94\u5b9e\u9645\u78c1\u76d8\u6216\u5206\u533a\uff0c\u662f\u6700\u57fa\u672c\u7684\u6784\u5efa\u5757\u3002<\/td><\/tr><tr><td><strong>VG\uff08Volume Group\uff09<\/strong><\/td><td>\u5377\u7ec4\uff0c\u7531\u591a\u4e2a PV \u7ec4\u6210\u7684\u5b58\u50a8\u6c60\uff0c\u7528\u4e8e\u7ba1\u7406\u5bb9\u91cf\u5206\u914d\u3002<\/td><\/tr><tr><td><strong>LV\uff08Logical Volume\uff09<\/strong><\/td><td>\u903b\u8f91\u5377\uff0c\u4ece VG \u4e2d\u5212\u5206\u51fa\u6765\uff0c\u7528\u4e8e\u6302\u8f7d\u6587\u4ef6\u7cfb\u7edf\u3002<\/td><\/tr><tr><td><strong>PE\uff08Physical Extent\uff09<\/strong><\/td><td>\u7269\u7406\u6269\u5c55\u5757\uff0cVG \u4e2d\u7684\u6700\u5c0f\u5206\u914d\u5355\u5143\uff0c\u9ed8\u8ba4\u5927\u5c0f\u4e00\u822c\u662f 4MB\uff08\u4e5f\u53ef\u8bbe\u7f6e\u66f4\u5927\uff09\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5de5\u4f5c\u673a\u5236<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1\ufe0f\u20e3 \u628a\u7269\u7406\u78c1\u76d8\u6216\u5206\u533a\u521d\u59cb\u5316\u4e3a PV\uff08<code>pvcreate<\/code>\uff09<br>2\ufe0f\u20e3 \u5c06\u591a\u4e2a PV \u5408\u5e76\u4e3a VG\uff08<code>vgcreate<\/code>\uff09<br>3\ufe0f\u20e3 \u4ece VG \u4e2d\u5212\u5206\u51fa LV\uff08<code>lvcreate<\/code>\uff09<br>4\ufe0f\u20e3 \u5bf9 LV \u683c\u5f0f\u5316\u6587\u4ef6\u7cfb\u7edf\u5e76\u6302\u8f7d\u4f7f\u7528<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u67b6\u6784\u652f\u6301<strong>\u5728\u7ebf\u6269\u5bb9\u3001\u5feb\u7167\u5907\u4efd\u3001\u8fc1\u79fb<\/strong>\uff0c\u4e3a\u751f\u4ea7\u73af\u5883\u5e26\u6765\u6781\u5927\u4fbf\u5229\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u524d\u671f\u51c6\u5907\u4e0e\u73af\u5883\u68c0\u67e5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u67e5\u770b\u73b0\u6709\u78c1\u76d8<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>lsblk<br>fdisk -l<br><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u786e\u4fdd\u65b0\u78c1\u76d8\u6216\u5206\u533a\u672a\u88ab\u6302\u8f7d\u4e14\u65e0\u91cd\u8981\u6570\u636e\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b89\u88c5 lvm2 \u5de5\u5177<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5927\u591a\u6570\u53d1\u884c\u7248\u4e2d\uff0cLVM \u5de5\u5177\u5305 <code>lvm2<\/code> \u5df2\u9884\u88c5\uff1b\u82e5\u6ca1\u6709\uff0c\u53ef\u624b\u52a8\u5b89\u88c5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code># Debian\/Ubuntu<br>apt install lvm2<br><br># RHEL\/CentOS<br>yum install lvm2<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001PV \u64cd\u4f5c\u8be6\u89e3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u521b\u5efa PV<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>pvcreate \/dev\/sdb1<br>pvcreate \/dev\/sdc1<br><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\u540e\uff0c\u53ef\u67e5\u770b\u72b6\u6001\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>pvdisplay<br>pvs<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6269\u5c55 PV<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u9700\u8981\u5c06\u65b0\u7684\u78c1\u76d8\u52a0\u5165 VG\uff0c\u53ea\u9700\u65b0\u5efa PV \u5e76\u7528 <code>vgextend<\/code> \u6dfb\u52a0\u5373\u53ef\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5220\u9664 PV<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c PV \u672a\u88ab\u4f7f\u7528\uff0c\u53ef\u76f4\u63a5\u5220\u9664\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>pvremove \/dev\/sdb1<br><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u82e5\u5df2\u7ecf\u5728 VG \u4e2d\uff0c\u9700\u8981\u5148\u8fc1\u79fb\u6570\u636e\u5e76\u79fb\u9664\uff08\u89c1\u540e\u6587 pvmove \u90e8\u5206\uff09\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001VG \u64cd\u4f5c\u8be6\u89e3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u521b\u5efa VG<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>vgcreate vg_data \/dev\/sdb1 \/dev\/sdc1<br><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770b\u5377\u7ec4\u4fe1\u606f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>vgdisplay<br>vgs<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6269\u5c55 VG<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>vgextend vg_data \/dev\/sdd1<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u79fb\u9664 PV \u5e76\u7f29\u5c0f VG<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fc1\u79fb PV \u4e0a\u7684\u6570\u636e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>pvmove \/dev\/sdb1<br>vgreduce vg_data \/dev\/sdb1<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5220\u9664 VG<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>vgremove vg_data<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001LV \u64cd\u4f5c\u8be6\u89e3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u521b\u5efa LV<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>lvcreate -L 50G -n lv_backup vg_data<br><\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>-L<\/code>: \u6307\u5b9a\u5927\u5c0f\uff0c\u53ef\u7528 <code>-l<\/code> \u6307\u5b9a PE \u6570\u91cf<\/li>\n\n\n\n<li><code>-n<\/code>: \u903b\u8f91\u5377\u540d\u79f0<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u683c\u5f0f\u5316 LV<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>mkfs.ext4 \/dev\/vg_data\/lv_backup<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6302\u8f7d LV<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>mkdir \/mnt\/backup<br>mount \/dev\/vg_data\/lv_backup \/mnt\/backup<br><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f00\u673a\u81ea\u52a8\u6302\u8f7d\uff0c\u53ef\u5199\u5165 <code>\/etc\/fstab<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>\/dev\/vg_data\/lv_backup \/mnt\/backup ext4 defaults 0 0<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6269\u5bb9 LV\uff08\u5728\u7ebf\u6216\u79bb\u7ebf\uff09<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u5728\u7ebf\u6269\u5bb9\uff08xfs \u6587\u4ef6\u7cfb\u7edf\uff09<\/h4>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>lvextend -L +20G \/dev\/vg_data\/lv_backup<br>xfs_growfs \/mnt\/backup<br><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u79bb\u7ebf\u6269\u5bb9\uff08ext4\uff09<\/h4>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>lvextend -L +20G \/dev\/vg_data\/lv_backup<br>resize2fs \/dev\/vg_data\/lv_backup<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7f29\u5c0f LV\uff08\u975e\u5e38\u8c28\u614e\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>umount \/mnt\/backup<br>e2fsck -f \/dev\/vg_data\/lv_backup<br>resize2fs \/dev\/vg_data\/lv_backup 30G<br>lvreduce -L 30G \/dev\/vg_data\/lv_backup<br>mount \/dev\/vg_data\/lv_backup \/mnt\/backup<br><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f \u7f29\u5c0f\u64cd\u4f5c\u5bb9\u6613\u5bfc\u81f4\u6570\u636e\u4e22\u5931\uff0c\u52a1\u5fc5\u5148\u5907\u4efd\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5220\u9664 LV<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>lvremove \/dev\/vg_data\/lv_backup<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u5feb\u7167\uff08Snapshot\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u521b\u5efa\u5feb\u7167<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>lvcreate -L 5G -s -n lv_backup_snap \/dev\/vg_data\/lv_backup<br><\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>-s<\/code>: \u521b\u5efa\u5feb\u7167<\/li>\n\n\n\n<li>\u5feb\u7167\u5927\u5c0f\u4e00\u822c\u53d6\u51b3\u4e8e\u53d8\u66f4\u6570\u636e\u91cf<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u7528\u5feb\u7167<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>mount \/dev\/vg_data\/lv_backup_snap \/mnt\/snapshot<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5220\u9664\u5feb\u7167<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>lvremove \/dev\/vg_data\/lv_backup_snap<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e03\u3001PV \u6570\u636e\u8fc1\u79fb\uff08pvmove\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u9700\u66f4\u6362\u786c\u76d8\u6216\u6e05\u7406\u78c1\u76d8\u65f6\uff0c\u53ef\u8fc1\u79fb\u7269\u7406\u5377\u6570\u636e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>pvmove \/dev\/sdb1<br>vgreduce vg_data \/dev\/sdb1<br>pvremove \/dev\/sdb1<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516b\u3001\u7cfb\u7edf\u542f\u52a8\u4e0e LVM<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6839\u5206\u533a\u4f7f\u7528 LVM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u82e5\u6839\u5206\u533a\u4f7f\u7528 LVM\uff0c\u9700\u5728 initramfs \u6216 initrd \u9636\u6bb5\u52a0\u8f7d LVM \u6a21\u5757\uff0c\u5426\u5219\u65e0\u6cd5\u542f\u52a8\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fee\u590d\u542f\u52a8\u65e0\u6cd5\u627e\u5230\u5377\u7ec4<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>vgscan<br>vgchange -ay<br><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u82e5\u9700\u8981\u624b\u52a8\u6062\u590d\uff0c\u53ef\u8fdb\u5165 rescue \u6a21\u5f0f\u6267\u884c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e5d\u3001LVM \u4e0e\u81ea\u52a8\u6302\u8f7d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 <code>\/etc\/fstab<\/code> \u4e2d\u6307\u5b9a LV\uff0c\u53ef\u81ea\u52a8\u6302\u8f7d\uff0c\u65e0\u9700\u989d\u5916\u64cd\u4f5c\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>\/dev\/vg_data\/lv_backup \/mnt\/backup ext4 defaults 0 0<br><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u82e5 VG\/LV \u65e0\u6cd5\u6fc0\u6d3b\uff0c\u7cfb\u7edf\u4f1a\u8fdb\u5165\u7d27\u6025\u6a21\u5f0f\uff0c\u53ef\u5728\u6062\u590d\u540e\u6267\u884c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>vgchange -ay<br>mount -a<br><\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5341\u3001\u5178\u578b\u9519\u8bef\u4e0e\u4fee\u590d\u601d\u8def<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u60c5\u51b5<\/th><th>\u4fee\u590d\u65b9\u5f0f<\/th><\/tr><\/thead><tbody><tr><td>LV \u65e0\u6cd5\u6302\u8f7d<\/td><td>\u68c0\u67e5 <code>lvdisplay<\/code>\uff0c\u786e\u8ba4\u6fc0\u6d3b\uff0c<code>vgchange -ay<\/code><\/td><\/tr><tr><td>VG \u4e22\u5931<\/td><td><code>vgscan<\/code> \u540e\u518d\u6fc0\u6d3b<\/td><\/tr><tr><td>PV UUID \u4e0d\u5339\u914d<\/td><td>\u7528 <code>pvcreate --uuid<\/code> \u6062\u590d\u539f\u6709 UUID<\/td><\/tr><tr><td>\u7f29\u5c0f LV \u5bfc\u81f4\u635f\u574f<\/td><td>\u82e5\u6709\u5feb\u7167\u6216\u5907\u4efd\uff0c\u53ef\u56de\u6eda<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5341\u4e00\u3001\u4f18\u7f3a\u70b9\u603b\u7ed3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f18\u70b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u2705 \u52a8\u6001\u6269\u5bb9\u3001\u7f29\u51cf<br>\u2705 \u8de8\u78c1\u76d8\u5377\u7ec4\u7ba1\u7406\uff0c\u7a7a\u95f4\u5229\u7528\u7387\u9ad8<br>\u2705 \u5feb\u7167\u652f\u6301\uff0c\u65b9\u4fbf\u5907\u4efd\u4e0e\u6062\u590d<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7f3a\u70b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f \u914d\u7f6e\u548c\u7ba1\u7406\u590d\u6742\uff0c\u51fa\u9519\u98ce\u9669\u9ad8<br>\u26a0\ufe0f \u6027\u80fd\u53ef\u80fd\u7565\u4f4e\u4e8e\u88f8\u5206\u533a\uff08\u5c24\u5176\u6d89\u53ca\u5feb\u7167\u65f6\uff09<br>\u26a0\ufe0f \u8bef\u64cd\u4f5c\u98ce\u9669\u8f83\u5927\uff08\u4f8b\u5982\u7f29\u51cf LV\uff09<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5341\u4e8c\u3001\u5b9e\u7528\u6280\u5de7\u4e0e\u6700\u4f73\u5b9e\u8df5<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u59cb\u7ec8\u4fdd\u6301\u6700\u65b0\u5907\u4efd<\/strong>\uff0c\u5c24\u5176\u662f\u7f29\u5c0f\u6216\u5220\u9664\u5377\u524d<\/li>\n\n\n\n<li>\u5bf9\u4e8e\u6570\u636e\u5e93\u3001\u865a\u62df\u673a\u7b49\u9ad8\u53d8\u52a8\u6027\u6570\u636e\uff0c\u53ef\u4f7f\u7528\u5feb\u7167\u505a\u5b9a\u671f\u5907\u4efd<\/li>\n\n\n\n<li>\u4f7f\u7528 RAID + LVM\uff0c\u53ef\u4ee5\u540c\u65f6\u4eab\u6709\u5197\u4f59\u4e0e\u7075\u6d3b\u7ba1\u7406<\/li>\n\n\n\n<li>\u5199\u811a\u672c\u6279\u91cf\u81ea\u52a8\u5316\u6267\u884c LVM \u64cd\u4f5c\uff0c\u964d\u4f4e\u4eba\u4e3a\u5931\u8bef<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5341\u4e09\u3001\u5e38\u7528\u547d\u4ee4\u901f\u67e5\u8868<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u529f\u80fd<\/th><th>\u547d\u4ee4\u793a\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>\u521b\u5efa PV<\/td><td><code>pvcreate \/dev\/sdb1<\/code><\/td><\/tr><tr><td>\u521b\u5efa VG<\/td><td><code>vgcreate vg_data \/dev\/sdb1<\/code><\/td><\/tr><tr><td>\u6269\u5c55 VG<\/td><td><code>vgextend vg_data \/dev\/sdc1<\/code><\/td><\/tr><tr><td>\u521b\u5efa LV<\/td><td><code>lvcreate -L 10G -n lv_test vg_data<\/code><\/td><\/tr><tr><td>\u6269\u5bb9 LV<\/td><td><code>lvextend -L +5G \/dev\/vg_data\/lv_test<\/code><\/td><\/tr><tr><td>\u7f29\u5c0f LV<\/td><td><code>lvreduce -L 5G \/dev\/vg_data\/lv_test<\/code><\/td><\/tr><tr><td>\u5feb\u7167 LV<\/td><td><code>lvcreate -L 1G -s -n snap \/dev\/vg_data\/lv_test<\/code><\/td><\/tr><tr><td>\u5220\u9664 LV<\/td><td><code>lvremove \/dev\/vg_data\/lv_test<\/code><\/td><\/tr><tr><td>\u6fc0\u6d3b VG<\/td><td><code>vgchange -ay<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u603b\u7ed3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">LVM \u901a\u8fc7\u62bd\u8c61\u7269\u7406\u5b58\u50a8\uff0c\u6781\u5927\u63d0\u9ad8\u4e86\u78c1\u76d8\u7a7a\u95f4\u7ba1\u7406\u7684\u7075\u6d3b\u6027\u548c\u6548\u7387\uff0c\u9002\u5408\u7528\u4e8e\u9700\u8981\u7ecf\u5e38\u8c03\u6574\u5bb9\u91cf\u6216\u8de8\u76d8\u7ba1\u7406\u573a\u666f\u3002\u719f\u7ec3\u638c\u63e1 LVM\uff0c\u4e0d\u4ec5\u80fd\u63d0\u9ad8\u751f\u4ea7\u73af\u5883\u7684\u53ef\u9760\u6027\uff0c\u4e5f\u80fd\u663e\u8457\u4f18\u5316\u5b58\u50a8\u8d44\u6e90\u5229\u7528\u7387\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u52a8\u624b\u4e4b\u524d\uff0c\u52a1\u5fc5\u505a\u597d\u5907\u4efd\uff0c\u5e76\u4e25\u683c\u9a8c\u8bc1\u6bcf\u4e2a\u64cd\u4f5c\u6b65\u9aa4\uff0c\u5c24\u5176\u662f\u6d89\u53ca\u7f29\u5c0f\u5377\u3001\u5220\u9664 PV \u6216\u8fc1\u79fb\u6570\u636e\u7684\u573a\u666f\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u4e22\u5931\u6570\u636e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u903b\u8f91\u5377\u7ba1\u7406\uff08LVM, Logical Volume Manager\uff09\u662f Linux \u7cfb\u7edf\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u5b58\u50a8\u7ba1\u7406\u65b9\u5f0f\uff0c\u5141\u8bb8\u7075\u6d3b\u3001\u9ad8\u6548\u5730\u7ba1\u7406\u78c1\u76d8\u7a7a\u95f4\u3002\u76f8\u6bd4\u4f20\u7edf\u56fa\u5b9a\u5206\u533a\uff0cLVM \u63d0\u4f9b\u4e86\u52a8\u6001\u8c03\u6574\u3001\u8de8\u76d8\u6269\u5bb9\u3001\u5feb\u7167\u7b49\u5148\u8fdb\u529f\u80fd\u3002 \u672c\u6587\u5c06\u4ece\u539f\u7406\u3001\u6838\u5fc3\u6982\u5ff5\u3001\u8be6\u7ec6\u64cd\u4f5c\u6b65\u9aa4\u3001\u5feb\u7167\u3001\u8fc1\u79fb\u3001\u9519\u8bef\u4fee\u590d\u3001\u4e0e\u542f\u52a8\u5173\u7cfb\u3001\u5e38\u89c1\u95ee\u9898\u53ca\u6700\u4f73\u5b9e\u8df5\u7b49\u591a\u4e2a\u5c42\u9762\u8be6\u7ec6\u89e3\u6790\uff0c\u5e2e\u52a9\u6df1\u5165\u638c\u63e1 LVM\u3002 \u4e00\u3001LVM \u57fa\u7840\u4e0e\u539f\u7406 \u4ec0\u4e48\u662f LVM\uff1f LVM \u662f Linux \u7684\u903b\u8f91\u5377\u7ba1\u7406\u6846\u67b6\uff0c\u628a\u7269\u7406\u5b58\u50a8\u8d44\u6e90\uff08\u78c1\u76d8\u6216\u5206\u533a\uff09\u62bd\u8c61\u6210\u903b\u8f91\u5377\uff0c\u4fbf\u4e8e\u7075\u6d3b\u7ba1\u7406\u3001\u52a8\u6001\u6269\u5bb9\u3001\u8de8\u76d8\u5b58\u50a8\u7b49\u9700\u6c42\u3002 \u6838\u5fc3\u6982\u5ff5 \u540d\u79f0 \u89e3\u91ca PV\uff08Physical Volume\uff09 \u7269\u7406\u5377\uff0c\u5bf9\u5e94\u5b9e\u9645\u78c1\u76d8\u6216\u5206\u533a\uff0c\u662f\u6700\u57fa\u672c\u7684\u6784\u5efa\u5757\u3002 VG\uff08Volume Group\uff09 \u5377\u7ec4\uff0c\u7531\u591a\u4e2a PV \u7ec4\u6210\u7684\u5b58\u50a8\u6c60\uff0c\u7528\u4e8e\u7ba1\u7406\u5bb9\u91cf\u5206\u914d\u3002 LV\uff08Logical Volume\uff09 \u903b\u8f91\u5377\uff0c\u4ece VG \u4e2d\u5212\u5206\u51fa\u6765\uff0c\u7528\u4e8e\u6302\u8f7d\u6587\u4ef6\u7cfb\u7edf\u3002 PE\uff08Physical Extent\uff09 \u7269\u7406\u6269\u5c55\u5757\uff0cVG \u4e2d\u7684\u6700\u5c0f\u5206\u914d\u5355\u5143\uff0c\u9ed8\u8ba4\u5927\u5c0f\u4e00\u822c\u662f 4MB\uff08\u4e5f\u53ef\u8bbe\u7f6e\u66f4\u5927\uff09\u3002 \u5de5\u4f5c\u673a\u5236 1\ufe0f\u20e3 \u628a\u7269\u7406\u78c1\u76d8\u6216\u5206\u533a\u521d\u59cb\u5316\u4e3a PV\uff08pvcreate\uff092\ufe0f\u20e3 \u5c06\u591a\u4e2a PV \u5408\u5e76\u4e3a VG\uff08vgcreate\uff093\ufe0f\u20e3 \u4ece VG \u4e2d\u5212\u5206\u51fa LV\uff08lvcreate\uff094\ufe0f\u20e3 &hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[201],"tags":[],"class_list":["post-4565","post","type-post","status-publish","format-standard","hentry","category-y2ijx7015eu2brk"],"_links":{"self":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts\/4565","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/comments?post=4565"}],"version-history":[{"count":1,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts\/4565\/revisions"}],"predecessor-version":[{"id":4566,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts\/4565\/revisions\/4566"}],"wp:attachment":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/media?parent=4565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/categories?post=4565"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/tags?post=4565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}