{"id":7,"date":"2024-06-16T23:21:57","date_gmt":"2024-06-16T15:21:57","guid":{"rendered":"https:\/\/www.swreader.com\/?p=7"},"modified":"2024-06-18T22:52:46","modified_gmt":"2024-06-18T14:52:46","slug":"%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/","title":{"rendered":"Linux Device Mapper"},"content":{"rendered":"<p>Linux\u5185\u6838\u4e2d\u7684\u8bbe\u5907\u6620\u5c04\u5668\uff08Device Mapper\uff09\u662f\u4e00\u79cd\u5f3a\u5927\u4e14\u7075\u6d3b\u7684\u5b58\u50a8\u7ba1\u7406\u6846\u67b6\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u5b58\u50a8\u89e3\u51b3\u65b9\u6848\u4e2d\uff0c\u5982LVM\uff08\u903b\u8f91\u5377\u7ba1\u7406\uff09\u3001\u8f6f\u4ef6RAID\u3001\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u7b49\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u8bbe\u5907\u6620\u5c04\u5668\u7684\u5de5\u4f5c\u539f\u7406\u3001\u6838\u5fc3\u7ec4\u4ef6\u4ee5\u53ca\u5e38\u89c1\u4f7f\u7528\u573a\u666f\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/f\/fb\/The_Linux_Storage_Stack_Diagram.svg\/800px-The_Linux_Storage_Stack_Diagram.svg.png\" alt=\"Device Mapper Overview\" \/><\/p>\n<h2>\u4ec0\u4e48\u662f\u8bbe\u5907\u6620\u5c04\u5668\uff1f<\/h2>\n<p>\u8bbe\u5907\u6620\u5c04\u5668\uff08Device Mapper\uff09\u662fLinux\u5185\u6838\u4e2d\u7684\u4e00\u4e2a\u6a21\u5757\uff0c\u63d0\u4f9b\u4e86\u4e00\u79cd\u5728\u7269\u7406\u5b58\u50a8\u8bbe\u5907\u4e4b\u4e0a\u521b\u5efa\u62bd\u8c61\u5c42\u7684\u673a\u5236\u3002\u901a\u8fc7\u8bbe\u5907\u6620\u5c04\u5668\uff0c\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u5728\u5b58\u50a8\u8bbe\u5907\u4e4b\u4e0a\u521b\u5efa\u865a\u62df\u5757\u8bbe\u5907\uff0c\u4ece\u800c\u5b9e\u73b0\u66f4\u9ad8\u7ea7\u7684\u5b58\u50a8\u7ba1\u7406\u529f\u80fd\u3002\u8bbe\u5907\u6620\u5c04\u5668\u7684\u8bbe\u8ba1\u76ee\u6807\u662f\u9ad8\u6548\u3001\u7075\u6d3b\u4e14\u53ef\u6269\u5c55\uff0c\u4f7f\u5176\u80fd\u591f\u6ee1\u8db3\u591a\u79cd\u5b58\u50a8\u9700\u6c42\u3002<\/p>\n<h2>\u6838\u5fc3\u7ec4\u4ef6<\/h2>\n<h3>1. \u76ee\u6807\uff08Targets\uff09<\/h3>\n<p>\u8bbe\u5907\u6620\u5c04\u5668\u7684\u6838\u5fc3\u6982\u5ff5\u4e4b\u4e00\u662f\u201c\u76ee\u6807\u201d\uff08target\uff09\u3002\u6bcf\u4e2a\u76ee\u6807\u4ee3\u8868\u4e00\u4e2a\u7279\u5b9a\u7684\u5b58\u50a8\u7ba1\u7406\u529f\u80fd\uff0c\u5982\u7ebf\u6027\u6620\u5c04\u3001\u6761\u5e26\u5316\u3001\u955c\u50cf\u3001\u5feb\u7167\u7b49\u3002\u76ee\u6807\u8d1f\u8d23\u5b9a\u4e49\u6570\u636e\u5728\u865a\u62df\u8bbe\u5907\u548c\u7269\u7406\u8bbe\u5907\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u3002<\/p>\n<p>\u5e38\u89c1\u7684\u76ee\u6807\u7c7b\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>linear<\/strong>\uff1a\u5c06\u4e00\u6bb5\u865a\u62df\u8bbe\u5907\u6620\u5c04\u5230\u4e00\u6bb5\u7269\u7406\u8bbe\u5907\u3002\u8fd9\u662f\u6700\u7b80\u5355\u7684\u6620\u5c04\u65b9\u5f0f\uff0c\u4e3b\u8981\u7528\u4e8e\u5c06\u591a\u4e2a\u7269\u7406\u8bbe\u5907\u62fc\u63a5\u6210\u4e00\u4e2a\u66f4\u5927\u7684\u865a\u62df\u8bbe\u5907\u3002<\/li>\n<li><strong>striped<\/strong>\uff1a\u5c06\u6570\u636e\u6761\u5e26\u5316\u5206\u5e03\u5728\u591a\u4e2a\u7269\u7406\u8bbe\u5907\u4e0a\uff0c\u63d0\u9ad8I\/O\u6027\u80fd\u3002\u6761\u5e26\u5316\u53ef\u4ee5\u5e73\u8861\u591a\u4e2a\u8bbe\u5907\u7684\u8d1f\u8f7d\uff0c\u63d0\u9ad8\u5e76\u884c\u8bfb\u5199\u6027\u80fd\u3002<\/li>\n<li><strong>mirror<\/strong>\uff1a\u5b9e\u73b0\u6570\u636e\u955c\u50cf\uff0c\u4ee5\u589e\u5f3a\u6570\u636e\u53ef\u9760\u6027\u3002\u955c\u50cf\u76ee\u6807\u53ef\u4ee5\u5c06\u6570\u636e\u540c\u6b65\u5199\u5165\u591a\u4e2a\u7269\u7406\u8bbe\u5907\uff0c\u4ee5\u9632\u6b62\u5355\u70b9\u6545\u969c\u3002<\/li>\n<li><strong>snapshot<\/strong>\uff1a\u521b\u5efa\u6570\u636e\u5feb\u7167\uff0c\u652f\u6301\u6570\u636e\u5907\u4efd\u548c\u6062\u590d\u3002\u5feb\u7167\u76ee\u6807\u53ef\u4ee5\u5728\u7279\u5b9a\u65f6\u95f4\u70b9\u51bb\u7ed3\u6570\u636e\u72b6\u6001\uff0c\u4ece\u800c\u5b9e\u73b0\u5feb\u901f\u5907\u4efd\u548c\u6062\u590d\u3002<\/li>\n<\/ul>\n<h3>2. \u6620\u5c04\u8868\uff08Mapping Table\uff09<\/h3>\n<p>\u6620\u5c04\u8868\u5b9a\u4e49\u4e86\u865a\u62df\u5757\u8bbe\u5907\u4e0e\u7269\u7406\u5757\u8bbe\u5907\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u3002\u6bcf\u4e2a\u6620\u5c04\u8868\u7531\u591a\u884c\u7ec4\u6210\uff0c\u6bcf\u884c\u6307\u5b9a\u4e86\u4e00\u4e2a\u76ee\u6807\u53ca\u5176\u76f8\u5173\u7684\u53c2\u6570\u3002\u6620\u5c04\u8868\u7684\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<pre><code>&lt;\u8d77\u59cb\u6247\u533a&gt; &lt;\u6247\u533a\u6570&gt; &lt;\u76ee\u6807\u7c7b\u578b&gt; &lt;\u76ee\u6807\u53c2\u6570&gt;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u7ebf\u6027\u6620\u5c04\u8868\u7684\u4e00\u884c\u53ef\u80fd\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code>0 2097152 linear \/dev\/sda1 0<\/code><\/pre>\n<p>\u8fd9\u884c\u8868\u793a\u5c06\u865a\u62df\u8bbe\u5907\u7684\u7b2c0\u6247\u533a\u5f00\u59cb\u76842,097,152\u4e2a\u6247\u533a\u7ebf\u6027\u6620\u5c04\u5230\u7269\u7406\u8bbe\u5907<code>\/dev\/sda1<\/code>\u7684\u7b2c0\u6247\u533a\u5f00\u59cb\u7684\u4f4d\u7f6e\u3002<\/p>\n<h3>3. \u8bbe\u5907\u7ba1\u7406\u5668\uff08dmsetup\uff09<\/h3>\n<p><code>dmsetup<\/code>\u662f\u4e00\u4e2a\u7528\u6237\u7a7a\u95f4\u5de5\u5177\uff0c\u7528\u4e8e\u914d\u7f6e\u548c\u7ba1\u7406\u8bbe\u5907\u6620\u5c04\u5668\u3002\u901a\u8fc7<code>dmsetup<\/code>\u547d\u4ee4\uff0c\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u521b\u5efa\u3001\u5220\u9664\u3001\u67e5\u770b\u548c\u4fee\u6539\u8bbe\u5907\u6620\u5c04\u5668\u7684\u914d\u7f6e\u3002\u5e38\u7528\u7684<code>dmsetup<\/code>\u547d\u4ee4\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u521b\u5efa\u8bbe\u5907<\/strong>\uff1a<code>dmsetup create &lt;\u8bbe\u5907\u540d&gt; --table &#039;&lt;\u6620\u5c04\u8868&gt;&#039;<\/code><\/li>\n<li><strong>\u79fb\u9664\u8bbe\u5907<\/strong>\uff1a<code>dmsetup remove &lt;\u8bbe\u5907\u540d&gt;<\/code><\/li>\n<li><strong>\u67e5\u770b\u8bbe\u5907\u72b6\u6001<\/strong>\uff1a<code>dmsetup status &lt;\u8bbe\u5907\u540d&gt;<\/code><\/li>\n<li><strong>\u5217\u51fa\u6240\u6709\u8bbe\u5907<\/strong>\uff1a<code>dmsetup ls<\/code><\/li>\n<\/ul>\n<h2>\u5e38\u89c1\u4f7f\u7528\u573a\u666f<\/h2>\n<h3>1. \u903b\u8f91\u5377\u7ba1\u7406\uff08LVM\uff09<\/h3>\n<p>LVM\u5229\u7528\u8bbe\u5907\u6620\u5c04\u5668\u6765\u5b9e\u73b0\u7075\u6d3b\u7684\u78c1\u76d8\u7ba1\u7406\u3002\u901a\u8fc7LVM\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u521b\u5efa\u3001\u8c03\u6574\u548c\u5220\u9664\u903b\u8f91\u5377\uff0c\u800c\u65e0\u9700\u76f4\u63a5\u64cd\u4f5c\u5e95\u5c42\u7269\u7406\u8bbe\u5907\u3002LVM\u652f\u6301\u5728\u7ebf\u6269\u5c55\u3001\u7f29\u5c0f\u6587\u4ef6\u7cfb\u7edf\uff0c\u4ee5\u53ca\u521b\u5efa\u5feb\u7167\uff0c\u6781\u5927\u5730\u63d0\u9ad8\u4e86\u5b58\u50a8\u7ba1\u7406\u7684\u7075\u6d3b\u6027\u548c\u4fbf\u5229\u6027\u3002LVM\u7684\u6838\u5fc3\u7ec4\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7269\u7406\u5377\uff08PV\uff09<\/strong>\uff1a\u5e95\u5c42\u7269\u7406\u5b58\u50a8\u8bbe\u5907\uff0c\u5982\u786c\u76d8\u6216\u5206\u533a\u3002<\/li>\n<li><strong>\u5377\u7ec4\uff08VG\uff09<\/strong>\uff1a\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u7269\u7406\u5377\u7ec4\u6210\u7684\u5b58\u50a8\u6c60\u3002<\/li>\n<li><strong>\u903b\u8f91\u5377\uff08LV\uff09<\/strong>\uff1a\u4ece\u5377\u7ec4\u4e2d\u5206\u914d\u7684\u865a\u62df\u5377\uff0c\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u5927\u5c0f\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/b\/ba\/LVM1.svg\/500px-LVM1.svg.png\" alt=\"LVM Structure\" \/><\/p>\n<h3>2. \u8f6f\u4ef6RAID<\/h3>\n<p>\u8bbe\u5907\u6620\u5c04\u5668\u652f\u6301\u521b\u5efa\u5404\u79cd\u7c7b\u578b\u7684\u8f6f\u4ef6RAID\uff0c\u5982RAID 0\uff08\u6761\u5e26\u5316\uff09\u3001RAID 1\uff08\u955c\u50cf\uff09\u548cRAID 5\uff08\u5206\u5e03\u5f0f\u5947\u5076\u6821\u9a8c\uff09\u3002\u901a\u8fc7\u8f6f\u4ef6RAID\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u63d0\u9ad8\u5b58\u50a8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u8bbe\u5907\u6620\u5c04\u5668\u4e2d\u7684RAID\u914d\u7f6e\u901a\u5e38\u901a\u8fc7<code>mdadm<\/code>\u5de5\u5177\u5b9e\u73b0\uff0c\u8be5\u5de5\u5177\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684RAID\u7ba1\u7406\u529f\u80fd\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/c\/ce\/RAID_100.svg\/1200px-RAID_100.svg.png\" alt=\"Software RAID\" \/><\/p>\n<h3>3. \u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf<\/h3>\n<p>\u8bbe\u5907\u6620\u5c04\u5668\u8fd8\u652f\u6301\u900f\u660e\u6570\u636e\u52a0\u5bc6\uff0c\u901a\u8fc7<code>dm-crypt<\/code>\u76ee\u6807\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u521b\u5efa\u52a0\u5bc6\u7684\u865a\u62df\u5757\u8bbe\u5907\uff0c\u4fdd\u62a4\u6570\u636e\u7684\u673a\u5bc6\u6027\u3002\u7ed3\u5408<code>LUKS<\/code>\uff08Linux Unified Key Setup\uff09\uff0c\u8bbe\u5907\u6620\u5c04\u5668\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u52a0\u5bc6\u7ba1\u7406\u529f\u80fd\u3002\u4f7f\u7528<code>cryptsetup<\/code>\u5de5\u5177\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u65b9\u4fbf\u5730\u8bbe\u7f6e\u548c\u7ba1\u7406\u52a0\u5bc6\u8bbe\u5907\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>\u521b\u5efa\u52a0\u5bc6\u8bbe\u5907<\/strong>\uff1a<code>cryptsetup luksFormat \/dev\/sda1<\/code><\/li>\n<li><strong>\u6253\u5f00\u52a0\u5bc6\u8bbe\u5907<\/strong>\uff1a<code>cryptsetup luksOpen \/dev\/sda1 encrypted_device<\/code><\/li>\n<li><strong>\u5173\u95ed\u52a0\u5bc6\u8bbe\u5907<\/strong>\uff1a<code>cryptsetup luksClose encrypted_device<\/code><\/li>\n<\/ul>\n<h3>4. \u5feb\u7167\u548c\u5907\u4efd<\/h3>\n<p>\u5229\u7528\u8bbe\u5907\u6620\u5c04\u5668\u7684\u5feb\u7167\u529f\u80fd\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u521b\u5efa\u5b58\u50a8\u8bbe\u5907\u7684\u65f6\u95f4\u70b9\u526f\u672c\uff0c\u7528\u4e8e\u5907\u4efd\u548c\u6570\u636e\u6062\u590d\u3002\u5feb\u7167\u53ef\u4ee5\u662f\u53ea\u8bfb\u7684\uff0c\u4e5f\u53ef\u4ee5\u662f\u53ef\u5199\u7684\uff0c\u4fbf\u4e8e\u5728\u4e0d\u5f71\u54cd\u751f\u4ea7\u7cfb\u7edf\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u6570\u636e\u5907\u4efd\u548c\u6d4b\u8bd5\u3002\u4f8b\u5982\uff0cLVM\u652f\u6301\u5feb\u901f\u521b\u5efa\u548c\u7ba1\u7406\u5feb\u7167\uff0c\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u53ef\u4ee5\u521b\u5efa\u903b\u8f91\u5377\u7684\u5feb\u7167\uff1a<\/p>\n<pre><code class=\"language-bash\">lvcreate --size 1G --snapshot --name my_snapshot \/dev\/vg0\/my_lv<\/code><\/pre>\n<p>\u8fd9\u6761\u547d\u4ee4\u521b\u5efa\u4e86\u903b\u8f91\u5377<code>\/dev\/vg0\/my_lv<\/code>\u7684\u4e00\u4e2a1GB\u5927\u5c0f\u7684\u5feb\u7167<code>my_snapshot<\/code>\u3002<\/p>\n<h2>\u5b9e\u6218\u793a\u4f8b<\/h2>\n<h3>1. \u521b\u5efa\u7ebf\u6027\u6620\u5c04\u8bbe\u5907<\/h3>\n<p>\u5047\u8bbe\u6709\u4e24\u4e2a\u7269\u7406\u5206\u533a<code>\/dev\/sda1<\/code>\u548c<code>\/dev\/sdb1<\/code>\uff0c\u5e0c\u671b\u5c06\u5b83\u4eec\u7ec4\u5408\u6210\u4e00\u4e2a\u7ebf\u6027\u6620\u5c04\u7684\u865a\u62df\u8bbe\u5907\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5b9e\u73b0\uff1a<\/p>\n<ol>\n<li>\n<p>\u521b\u5efa\u6620\u5c04\u8868\u6587\u4ef6<code>linear_table.txt<\/code>\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-plaintext\">0 2097152 linear \/dev\/sda1 0\n2097152 2097152 linear \/dev\/sdb1 0<\/code><\/pre>\n<\/li>\n<li>\n<p>\u4f7f\u7528<code>dmsetup<\/code>\u521b\u5efa\u8bbe\u5907\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo dmsetup create my_linear_device --table linear_table.txt<\/code><\/pre>\n<\/li>\n<li>\n<p>\u9a8c\u8bc1\u8bbe\u5907\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo dmsetup ls\nsudo dmsetup info my_linear_device<\/code><\/pre>\n<\/li>\n<\/ol>\n<h3>2. \u521b\u5efa\u6761\u5e26\u5316\u8bbe\u5907<\/h3>\n<p>\u5047\u8bbe\u6709\u4e24\u4e2a\u7269\u7406\u5206\u533a<code>\/dev\/sda1<\/code>\u548c<code>\/dev\/sdb1<\/code>\uff0c\u5e0c\u671b\u5c06\u5b83\u4eec\u6761\u5e26\u5316\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5b9e\u73b0\uff1a<\/p>\n<ol>\n<li>\n<p>\u521b\u5efa\u6620\u5c04\u8868\u6587\u4ef6<code>striped_table.txt<\/code>\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-plaintext\">0 4194304 striped 2 256 \/dev\/sda1 0 \/dev\/sdb1 0<\/code><\/pre>\n<\/li>\n<li>\n<p>\u4f7f\u7528<code>dmsetup<\/code>\u521b\u5efa\u8bbe\u5907\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo dmsetup create my_striped_device --table striped_table.txt<\/code><\/pre>\n<\/li>\n<li>\n<p>\u9a8c\u8bc1\u8bbe\u5907\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo dmsetup ls\nsudo dmsetup info my_striped_device<\/code><\/pre>\n<\/li>\n<\/ol>\n<h3>3. \u521b\u5efa\u955c\u50cf\u8bbe\u5907<\/h3>\n<p>\u5047\u8bbe\u6709\u4e24\u4e2a\u7269\u7406\u5206\u533a<code>\/dev\/sda1<\/code>\u548c<code>\/dev\/sdb1<\/code>\uff0c\u5e0c\u671b\u5c06\u5b83\u4eec\u955c\u50cf\u4ee5\u63d0\u9ad8\u6570\u636e\u53ef\u9760\u6027\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5b9e\u73b0\uff1a<\/p>\n<ol>\n<li>\n<p>\u521b\u5efa\u6620\u5c04\u8868\u6587\u4ef6<code>mirror_table.txt<\/code>\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-plaintext\">0 2097152 mirror core 2 1 \/dev\/sda1 0 \/dev\/sdb1 0<\/code><\/pre>\n<\/li>\n<li>\n<p>\u4f7f\u7528<code>dmsetup<\/code>\u521b\u5efa\u8bbe\u5907\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo dmsetup create my_mirror_device --table mirror_table.txt<\/code><\/pre>\n<\/li>\n<li>\n<p>\u9a8c\u8bc1\u8bbe\u5907\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo dmsetup ls\nsudo dmsetup info my_mirror_device<\/code><\/pre>\n<\/li>\n<\/ol>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u8bbe\u5907\u6620\u5c04\u5668\u662fLinux\u5185\u6838\u4e2d\u4e00\u4e2a\u6781\u5176\u5f3a\u5927\u4e14\u7075\u6d3b\u7684\u5b58\u50a8\u7ba1\u7406\u5de5\u5177\u3002\u901a\u8fc7\u8bbe\u5907\u6620\u5c04\u5668\uff0c\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u5728\u7269\u7406\u5b58\u50a8\u8bbe\u5907\u4e4b\u4e0a\u6784\u5efa\u5404\u79cd\u9ad8\u7ea7\u5b58\u50a8\u89e3\u51b3\u65b9\u6848\uff0c\u5982\u903b\u8f91\u5377\u7ba1\u7406\u3001\u8f6f\u4ef6RAID\u3001\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u548c\u5feb\u7167\u5907\u4efd\u7b49\u3002\u638c\u63e1\u8bbe\u5907\u6620\u5c04\u5668\u7684\u4f7f\u7528\uff0c\u4e0d\u4ec5\u80fd\u591f\u63d0\u9ad8\u5b58\u50a8\u7cfb\u7edf\u7684\u7ba1\u7406\u6548\u7387\uff0c\u8fd8\u80fd\u663e\u8457\u589e\u5f3a\u6570\u636e\u7684\u53ef\u9760\u6027\u548c\u5b89\u5168\u6027\u3002\u8bbe\u5907\u6620\u5c04\u5668\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u914d\u7f6e\u9009\u9879\u548c\u7075\u6d3b\u7684\u7ba1\u7406\u65b9\u5f0f\uff0c\u662f\u73b0\u4ee3Linux\u5b58\u50a8\u7ba1\u7406\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux\u5185\u6838\u4e2d\u7684\u8bbe\u5907\u6620\u5c04\u5668\uff08Device Mapper\uff09\u662f\u4e00\u79cd\u5f3a\u5927\u4e14\u7075\u6d3b\u7684\u5b58\u50a8\u7ba1\u7406\u6846\u67b6\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u5b58\u50a8\u89e3\u51b3\u65b9\u6848\u4e2d\uff0c\u5982LVM\uff08\u903b\u8f91\u5377\u7ba1\u7406\uff09\u3001\u8f6f\u4ef6RAID\u3001\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u7b49\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u8bbe\u5907\u6620\u5c04\u5668\u7684\u5de5\u4f5c\u539f\u7406\u3001\u6838\u5fc3\u7ec4\u4ef6\u4ee5\u53ca\u5e38\u89c1\u4f7f\u7528\u573a\u666f\u3002 \u4ec0\u4e48\u662f\u8bbe\u5907\u6620\u5c04\u5668\uff1f \u8bbe\u5907\u6620\u5c04\u5668\uff08Device Mapper\uff09\u662fLinux\u5185\u6838\u4e2d\u7684\u4e00\u4e2a\u6a21\u5757\uff0c\u63d0\u4f9b\u4e86\u4e00\u79cd\u5728\u7269\u7406\u5b58\u50a8\u8bbe\u5907\u4e4b\u4e0a\u521b\u5efa\u62bd\u8c61\u5c42\u7684\u673a\u5236\u3002\u901a\u8fc7\u8bbe\u5907\u6620\u5c04\u5668\uff0c\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u5728\u5b58\u50a8\u8bbe\u5907\u4e4b\u4e0a\u521b\u5efa\u865a\u62df\u5757\u8bbe\u5907\uff0c\u4ece\u800c\u5b9e\u73b0\u66f4\u9ad8\u7ea7\u7684\u5b58\u50a8\u7ba1\u7406\u529f\u80fd\u3002\u8bbe\u5907\u6620\u5c04\u5668\u7684\u8bbe\u8ba1\u76ee\u6807\u662f\u9ad8\u6548\u3001\u7075\u6d3b\u4e14\u53ef\u6269\u5c55\uff0c\u4f7f\u5176\u80fd\u591f\u6ee1\u8db3\u591a\u79cd\u5b58\u50a8\u9700\u6c42\u3002 \u6838\u5fc3\u7ec4\u4ef6 1. \u76ee\u6807\uff08Targets\uff09 \u8bbe\u5907\u6620\u5c04\u5668\u7684\u6838\u5fc3\u6982\u5ff5\u4e4b\u4e00\u662f\u201c\u76ee\u6807\u201d\uff08target\uff09\u3002\u6bcf\u4e2a\u76ee\u6807\u4ee3\u8868\u4e00\u4e2a\u7279\u5b9a\u7684\u5b58\u50a8\u7ba1\u7406\u529f\u80fd\uff0c\u5982\u7ebf\u6027\u6620\u5c04\u3001\u6761\u5e26\u5316\u3001\u955c\u50cf\u3001\u5feb\u7167\u7b49\u3002\u76ee\u6807\u8d1f\u8d23\u5b9a\u4e49\u6570\u636e\u5728\u865a\u62df\u8bbe\u5907\u548c\u7269\u7406\u8bbe\u5907\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u3002 \u5e38\u89c1\u7684\u76ee\u6807\u7c7b\u578b\u5305\u62ec\uff1a linear\uff1a\u5c06\u4e00\u6bb5\u865a\u62df\u8bbe\u5907\u6620\u5c04\u5230\u4e00\u6bb5\u7269\u7406\u8bbe\u5907\u3002\u8fd9\u662f\u6700\u7b80\u5355\u7684\u6620\u5c04\u65b9\u5f0f\uff0c\u4e3b\u8981\u7528\u4e8e\u5c06\u591a\u4e2a\u7269\u7406\u8bbe\u5907\u62fc\u63a5\u6210\u4e00\u4e2a\u66f4\u5927\u7684\u865a\u62df\u8bbe\u5907\u3002 striped\uff1a\u5c06\u6570\u636e\u6761\u5e26\u5316\u5206\u5e03\u5728\u591a\u4e2a\u7269\u7406\u8bbe\u5907\u4e0a\uff0c\u63d0\u9ad8I\/O\u6027\u80fd\u3002\u6761\u5e26\u5316\u53ef\u4ee5\u5e73\u8861\u591a\u4e2a\u8bbe\u5907\u7684\u8d1f\u8f7d\uff0c\u63d0\u9ad8\u5e76\u884c\u8bfb\u5199\u6027\u80fd\u3002 mirror\uff1a\u5b9e\u73b0\u6570\u636e\u955c\u50cf\uff0c\u4ee5\u589e\u5f3a\u6570\u636e\u53ef\u9760\u6027\u3002\u955c\u50cf\u76ee\u6807\u53ef\u4ee5\u5c06\u6570\u636e\u540c\u6b65\u5199\u5165\u591a\u4e2a\u7269\u7406\u8bbe\u5907\uff0c\u4ee5\u9632\u6b62\u5355\u70b9\u6545\u969c\u3002 snapshot\uff1a\u521b\u5efa\u6570\u636e\u5feb\u7167\uff0c\u652f\u6301\u6570\u636e\u5907\u4efd\u548c\u6062\u590d\u3002\u5feb\u7167\u76ee\u6807\u53ef\u4ee5\u5728\u7279\u5b9a\u65f6\u95f4\u70b9\u51bb\u7ed3\u6570\u636e\u72b6\u6001\uff0c\u4ece\u800c\u5b9e\u73b0\u5feb\u901f\u5907\u4efd\u548c\u6062\u590d\u3002 2. \u6620\u5c04\u8868\uff08Mapping Table\uff09 \u6620\u5c04\u8868\u5b9a\u4e49\u4e86\u865a\u62df\u5757\u8bbe\u5907\u4e0e\u7269\u7406\u5757\u8bbe\u5907\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u3002\u6bcf\u4e2a\u6620\u5c04\u8868\u7531\u591a\u884c\u7ec4\u6210\uff0c\u6bcf\u884c\u6307\u5b9a\u4e86\u4e00\u4e2a\u76ee\u6807\u53ca\u5176\u76f8\u5173\u7684\u53c2\u6570\u3002\u6620\u5c04\u8868\u7684\u683c\u5f0f\u5982\u4e0b\uff1a &lt;\u8d77\u59cb\u6247\u533a&gt; &lt;\u6247\u533a\u6570&gt; &lt;\u76ee\u6807\u7c7b\u578b&gt; &lt;\u76ee\u6807\u53c2\u6570&gt; \u4f8b\u5982\uff0c\u7ebf\u6027\u6620\u5c04\u8868\u7684\u4e00\u884c\u53ef\u80fd\u5982\u4e0b\u6240\u793a\uff1a 0 2097152 linear \/dev\/sda1 0 \u8fd9\u884c\u8868\u793a\u5c06\u865a\u62df\u8bbe\u5907\u7684\u7b2c0\u6247\u533a\u5f00\u59cb\u76842,097,152\u4e2a\u6247\u533a\u7ebf\u6027\u6620\u5c04\u5230\u7269\u7406\u8bbe\u5907\/dev\/sda1\u7684\u7b2c0\u6247\u533a\u5f00\u59cb\u7684\u4f4d\u7f6e\u3002 3. \u8bbe\u5907\u7ba1\u7406\u5668\uff08dmsetup\uff09 dmsetup\u662f\u4e00\u4e2a\u7528\u6237\u7a7a\u95f4\u5de5\u5177\uff0c\u7528\u4e8e\u914d\u7f6e\u548c\u7ba1\u7406\u8bbe\u5907\u6620\u5c04\u5668\u3002\u901a\u8fc7dmsetup\u547d\u4ee4\uff0c\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u521b\u5efa\u3001\u5220\u9664\u3001\u67e5\u770b\u548c\u4fee\u6539\u8bbe\u5907\u6620\u5c04\u5668\u7684\u914d\u7f6e\u3002\u5e38\u7528\u7684dmsetup\u547d\u4ee4\u5305\u62ec\uff1a \u521b\u5efa\u8bbe\u5907\uff1admsetup create &lt;\u8bbe\u5907\u540d&gt; &#8211;table &#039;&lt;\u6620\u5c04\u8868&gt;&#039; \u79fb\u9664\u8bbe\u5907\uff1admsetup remove &lt;\u8bbe\u5907\u540d&gt; \u67e5\u770b\u8bbe\u5907\u72b6\u6001\uff1admsetup status &lt;\u8bbe\u5907\u540d&gt; \u5217\u51fa\u6240\u6709\u8bbe\u5907\uff1admsetup ls \u5e38\u89c1\u4f7f\u7528\u573a\u666f 1. \u903b\u8f91\u5377\u7ba1\u7406\uff08LVM\uff09 LVM\u5229\u7528\u8bbe\u5907\u6620\u5c04\u5668\u6765\u5b9e\u73b0\u7075\u6d3b\u7684\u78c1\u76d8\u7ba1\u7406\u3002\u901a\u8fc7LVM\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u521b\u5efa\u3001\u8c03\u6574\u548c\u5220\u9664\u903b\u8f91\u5377\uff0c\u800c\u65e0\u9700\u76f4\u63a5\u64cd\u4f5c\u5e95\u5c42\u7269\u7406\u8bbe\u5907\u3002LVM\u652f\u6301\u5728\u7ebf\u6269\u5c55\u3001\u7f29\u5c0f\u6587\u4ef6\u7cfb\u7edf\uff0c\u4ee5\u53ca\u521b\u5efa\u5feb\u7167\uff0c\u6781\u5927\u5730\u63d0\u9ad8\u4e86\u5b58\u50a8\u7ba1\u7406\u7684\u7075\u6d3b\u6027\u548c\u4fbf\u5229\u6027\u3002LVM\u7684\u6838\u5fc3\u7ec4\u4ef6\u5305\u62ec\uff1a \u7269\u7406\u5377\uff08PV\uff09\uff1a\u5e95\u5c42\u7269\u7406\u5b58\u50a8\u8bbe\u5907\uff0c\u5982\u786c\u76d8\u6216\u5206\u533a\u3002 \u5377\u7ec4\uff08VG\uff09\uff1a\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u7269\u7406\u5377\u7ec4\u6210\u7684\u5b58\u50a8\u6c60\u3002 \u903b\u8f91\u5377\uff08LV\uff09\uff1a\u4ece\u5377\u7ec4\u4e2d\u5206\u914d\u7684\u865a\u62df\u5377\uff0c\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u5927\u5c0f\u3002 2. \u8f6f\u4ef6RAID \u8bbe\u5907\u6620\u5c04\u5668\u652f\u6301\u521b\u5efa\u5404\u79cd\u7c7b\u578b\u7684\u8f6f\u4ef6RAID\uff0c\u5982RAID 0\uff08\u6761\u5e26\u5316\uff09\u3001RAID 1\uff08\u955c\u50cf\uff09\u548cRAID 5\uff08\u5206\u5e03\u5f0f\u5947\u5076\u6821\u9a8c\uff09\u3002\u901a\u8fc7\u8f6f\u4ef6RAID\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u63d0\u9ad8\u5b58\u50a8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u8bbe\u5907\u6620\u5c04\u5668\u4e2d\u7684RAID\u914d\u7f6e\u901a\u5e38\u901a\u8fc7mdadm\u5de5\u5177\u5b9e\u73b0\uff0c\u8be5\u5de5\u5177\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684RAID\u7ba1\u7406\u529f\u80fd\u3002 3. \u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf \u8bbe\u5907\u6620\u5c04\u5668\u8fd8\u652f\u6301\u900f\u660e\u6570\u636e\u52a0\u5bc6\uff0c\u901a\u8fc7dm-crypt\u76ee\u6807\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u521b\u5efa\u52a0\u5bc6\u7684\u865a\u62df\u5757\u8bbe\u5907\uff0c\u4fdd\u62a4\u6570\u636e\u7684\u673a\u5bc6\u6027\u3002\u7ed3\u5408LUKS\uff08Linux Unified Key Setup\uff09\uff0c\u8bbe\u5907\u6620\u5c04\u5668\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u52a0\u5bc6\u7ba1\u7406\u529f\u80fd\u3002\u4f7f\u7528cryptsetup\u5de5\u5177\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u65b9\u4fbf\u5730\u8bbe\u7f6e\u548c\u7ba1\u7406\u52a0\u5bc6\u8bbe\u5907\uff0c\u4f8b\u5982\uff1a \u521b\u5efa\u52a0\u5bc6\u8bbe\u5907\uff1acryptsetup luksFormat \/dev\/sda1 \u6253\u5f00\u52a0\u5bc6\u8bbe\u5907\uff1acryptsetup luksOpen \/dev\/sda1 encrypted_device \u5173\u95ed\u52a0\u5bc6\u8bbe\u5907\uff1acryptsetup luksClose encrypted_device 4. \u5feb\u7167\u548c\u5907\u4efd \u5229\u7528\u8bbe\u5907\u6620\u5c04\u5668\u7684\u5feb\u7167\u529f\u80fd\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u521b\u5efa\u5b58\u50a8\u8bbe\u5907\u7684\u65f6\u95f4\u70b9\u526f\u672c\uff0c\u7528\u4e8e\u5907\u4efd\u548c\u6570\u636e\u6062\u590d\u3002\u5feb\u7167\u53ef\u4ee5\u662f\u53ea\u8bfb\u7684\uff0c\u4e5f\u53ef\u4ee5\u662f\u53ef\u5199\u7684\uff0c\u4fbf\u4e8e\u5728\u4e0d\u5f71\u54cd\u751f\u4ea7\u7cfb\u7edf\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u6570\u636e\u5907\u4efd\u548c\u6d4b\u8bd5\u3002\u4f8b\u5982\uff0cLVM\u652f\u6301\u5feb\u901f\u521b\u5efa\u548c\u7ba1\u7406\u5feb\u7167\uff0c\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u53ef\u4ee5\u521b\u5efa\u903b\u8f91\u5377\u7684\u5feb\u7167\uff1a lvcreate &#8211;size 1G &#8211;snapshot &#8211;name my_snapshot \/dev\/vg0\/my_lv \u8fd9\u6761\u547d\u4ee4\u521b\u5efa\u4e86\u903b\u8f91\u5377\/dev\/vg0\/my_lv\u7684\u4e00\u4e2a1GB\u5927\u5c0f\u7684\u5feb\u7167my_snapshot\u3002 \u5b9e\u6218\u793a\u4f8b 1. &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[3,2,10],"tags":[17,6,7,5],"class_list":["post-7","post","type-post","status-publish","format-standard","hentry","category-android","category-blog","category-linux","tag-andrioid","tag-device-mapper","tag-dynamic-partition","tag-linux"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Linux Device Mapper - TianYa Blog<\/title>\n<meta name=\"description\" content=\"\u8fd9\u7bc7\u6587\u7ae0\u6df1\u5165\u63a2\u8ba8\u4e86Linux\u5185\u6838\u4e2d\u7684\u8bbe\u5907\u6620\u5c04\u5668\uff08Device Mapper\uff09\u3002\u8bbe\u5907\u6620\u5c04\u5668\u5141\u8bb8\u5728\u7269\u7406\u5b58\u50a8\u8bbe\u5907\u4e0a\u521b\u5efa\u865a\u62df\u5757\u8bbe\u5907\uff0c\u4ee5\u652f\u6301\u8bf8\u5982\u903b\u8f91\u5377\u7ba1\u7406\uff08LVM\uff09\u3001\u8f6f\u4ef6RAID\u548c\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u7b49\u9ad8\u7ea7\u5b58\u50a8\u7ba1\u7406\u529f\u80fd\u3002\u6587\u7ae0\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u8bbe\u5907\u6620\u5c04\u5668\u7684\u5de5\u4f5c\u539f\u7406\u3001\u6838\u5fc3\u7ec4\u4ef6\uff08\u5982\u76ee\u6807\u548c\u6620\u5c04\u8868\uff09\u3001\u5e38\u89c1\u7684\u4f7f\u7528\u573a\u666f\uff08\u5305\u62ecLVM\u3001\u8f6f\u4ef6RAID\u3001\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u548c\u5feb\u7167\u5907\u4efd\uff09\uff0c\u5e76\u63d0\u4f9b\u4e86\u5b9e\u9645\u64cd\u4f5c\u793a\u4f8b\u4ee5\u53ca\u8bbe\u5907\u6620\u5c04\u5668\u7ba1\u7406\u5de5\u5177\uff08dmsetup\uff09\u7684\u57fa\u672c\u7528\u6cd5\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/\u63a2\u7d22linux\u5185\u6838\u8bbe\u5907\u6620\u5c04\u5668\uff08device-mapper\uff09\uff1a\u7075\u6d3b\u7684\u5b58\u50a8\u7ba1\u7406\u89e3\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Linux Device Mapper - TianYa Blog\" \/>\n<meta property=\"og:description\" content=\"\u8fd9\u7bc7\u6587\u7ae0\u6df1\u5165\u63a2\u8ba8\u4e86Linux\u5185\u6838\u4e2d\u7684\u8bbe\u5907\u6620\u5c04\u5668\uff08Device Mapper\uff09\u3002\u8bbe\u5907\u6620\u5c04\u5668\u5141\u8bb8\u5728\u7269\u7406\u5b58\u50a8\u8bbe\u5907\u4e0a\u521b\u5efa\u865a\u62df\u5757\u8bbe\u5907\uff0c\u4ee5\u652f\u6301\u8bf8\u5982\u903b\u8f91\u5377\u7ba1\u7406\uff08LVM\uff09\u3001\u8f6f\u4ef6RAID\u548c\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u7b49\u9ad8\u7ea7\u5b58\u50a8\u7ba1\u7406\u529f\u80fd\u3002\u6587\u7ae0\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u8bbe\u5907\u6620\u5c04\u5668\u7684\u5de5\u4f5c\u539f\u7406\u3001\u6838\u5fc3\u7ec4\u4ef6\uff08\u5982\u76ee\u6807\u548c\u6620\u5c04\u8868\uff09\u3001\u5e38\u89c1\u7684\u4f7f\u7528\u573a\u666f\uff08\u5305\u62ecLVM\u3001\u8f6f\u4ef6RAID\u3001\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u548c\u5feb\u7167\u5907\u4efd\uff09\uff0c\u5e76\u63d0\u4f9b\u4e86\u5b9e\u9645\u64cd\u4f5c\u793a\u4f8b\u4ee5\u53ca\u8bbe\u5907\u6620\u5c04\u5668\u7ba1\u7406\u5de5\u5177\uff08dmsetup\uff09\u7684\u57fa\u672c\u7528\u6cd5\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/\u63a2\u7d22linux\u5185\u6838\u8bbe\u5907\u6620\u5c04\u5668\uff08device-mapper\uff09\uff1a\u7075\u6d3b\u7684\u5b58\u50a8\u7ba1\u7406\u89e3\/\" \/>\n<meta property=\"og:site_name\" content=\"TianYa Blog\" \/>\n<meta property=\"article:published_time\" content=\"2024-06-16T15:21:57+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-18T14:52:46+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/f\/fb\/The_Linux_Storage_Stack_Diagram.svg\/800px-The_Linux_Storage_Stack_Diagram.svg.png\" \/>\n<meta name=\"author\" content=\"zdm\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"zdm\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/\"},\"author\":{\"name\":\"zdm\",\"@id\":\"https:\\\/\\\/www.swreader.com\\\/#\\\/schema\\\/person\\\/9c90501e33afc9307d757bc8cfaf1c6f\"},\"headline\":\"Linux Device Mapper\",\"datePublished\":\"2024-06-16T15:21:57+00:00\",\"dateModified\":\"2024-06-18T14:52:46+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/\"},\"wordCount\":47,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.swreader.com\\\/#\\\/schema\\\/person\\\/9c90501e33afc9307d757bc8cfaf1c6f\"},\"image\":{\"@id\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/upload.wikimedia.org\\\/wikipedia\\\/commons\\\/thumb\\\/f\\\/fb\\\/The_Linux_Storage_Stack_Diagram.svg\\\/800px-The_Linux_Storage_Stack_Diagram.svg.png\",\"keywords\":[\"Andrioid\",\"Device Mapper\",\"dynamic partition\",\"linux\"],\"articleSection\":[\"Android\",\"blog\",\"linux\"],\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/\",\"url\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/\",\"name\":\"Linux Device Mapper - TianYa Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.swreader.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/upload.wikimedia.org\\\/wikipedia\\\/commons\\\/thumb\\\/f\\\/fb\\\/The_Linux_Storage_Stack_Diagram.svg\\\/800px-The_Linux_Storage_Stack_Diagram.svg.png\",\"datePublished\":\"2024-06-16T15:21:57+00:00\",\"dateModified\":\"2024-06-18T14:52:46+00:00\",\"description\":\"\u8fd9\u7bc7\u6587\u7ae0\u6df1\u5165\u63a2\u8ba8\u4e86Linux\u5185\u6838\u4e2d\u7684\u8bbe\u5907\u6620\u5c04\u5668\uff08Device Mapper\uff09\u3002\u8bbe\u5907\u6620\u5c04\u5668\u5141\u8bb8\u5728\u7269\u7406\u5b58\u50a8\u8bbe\u5907\u4e0a\u521b\u5efa\u865a\u62df\u5757\u8bbe\u5907\uff0c\u4ee5\u652f\u6301\u8bf8\u5982\u903b\u8f91\u5377\u7ba1\u7406\uff08LVM\uff09\u3001\u8f6f\u4ef6RAID\u548c\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u7b49\u9ad8\u7ea7\u5b58\u50a8\u7ba1\u7406\u529f\u80fd\u3002\u6587\u7ae0\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u8bbe\u5907\u6620\u5c04\u5668\u7684\u5de5\u4f5c\u539f\u7406\u3001\u6838\u5fc3\u7ec4\u4ef6\uff08\u5982\u76ee\u6807\u548c\u6620\u5c04\u8868\uff09\u3001\u5e38\u89c1\u7684\u4f7f\u7528\u573a\u666f\uff08\u5305\u62ecLVM\u3001\u8f6f\u4ef6RAID\u3001\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u548c\u5feb\u7167\u5907\u4efd\uff09\uff0c\u5e76\u63d0\u4f9b\u4e86\u5b9e\u9645\u64cd\u4f5c\u793a\u4f8b\u4ee5\u53ca\u8bbe\u5907\u6620\u5c04\u5668\u7ba1\u7406\u5de5\u5177\uff08dmsetup\uff09\u7684\u57fa\u672c\u7528\u6cd5\u3002\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/#primaryimage\",\"url\":\"https:\\\/\\\/upload.wikimedia.org\\\/wikipedia\\\/commons\\\/thumb\\\/f\\\/fb\\\/The_Linux_Storage_Stack_Diagram.svg\\\/800px-The_Linux_Storage_Stack_Diagram.svg.png\",\"contentUrl\":\"https:\\\/\\\/upload.wikimedia.org\\\/wikipedia\\\/commons\\\/thumb\\\/f\\\/fb\\\/The_Linux_Storage_Stack_Diagram.svg\\\/800px-The_Linux_Storage_Stack_Diagram.svg.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/2024\\\/06\\\/16\\\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\\\/\\\/www.swreader.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Linux Device Mapper\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.swreader.com\\\/#website\",\"url\":\"https:\\\/\\\/www.swreader.com\\\/\",\"name\":\"TianYa Blog\",\"description\":\"Technology And Life\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.swreader.com\\\/#\\\/schema\\\/person\\\/9c90501e33afc9307d757bc8cfaf1c6f\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.swreader.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"zh-Hans\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/www.swreader.com\\\/#\\\/schema\\\/person\\\/9c90501e33afc9307d757bc8cfaf1c6f\",\"name\":\"zdm\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/2670c9b6412a56381880b2ca03988f659e8a378fe7332238a4a741b660a60997?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/2670c9b6412a56381880b2ca03988f659e8a378fe7332238a4a741b660a60997?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/2670c9b6412a56381880b2ca03988f659e8a378fe7332238a4a741b660a60997?s=96&d=mm&r=g\",\"caption\":\"zdm\"},\"logo\":{\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/2670c9b6412a56381880b2ca03988f659e8a378fe7332238a4a741b660a60997?s=96&d=mm&r=g\"},\"sameAs\":[\"http:\\\/\\\/www.swreader.com\"],\"url\":\"https:\\\/\\\/www.swreader.com\\\/index.php\\\/author\\\/zdm\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Linux Device Mapper - TianYa Blog","description":"\u8fd9\u7bc7\u6587\u7ae0\u6df1\u5165\u63a2\u8ba8\u4e86Linux\u5185\u6838\u4e2d\u7684\u8bbe\u5907\u6620\u5c04\u5668\uff08Device Mapper\uff09\u3002\u8bbe\u5907\u6620\u5c04\u5668\u5141\u8bb8\u5728\u7269\u7406\u5b58\u50a8\u8bbe\u5907\u4e0a\u521b\u5efa\u865a\u62df\u5757\u8bbe\u5907\uff0c\u4ee5\u652f\u6301\u8bf8\u5982\u903b\u8f91\u5377\u7ba1\u7406\uff08LVM\uff09\u3001\u8f6f\u4ef6RAID\u548c\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u7b49\u9ad8\u7ea7\u5b58\u50a8\u7ba1\u7406\u529f\u80fd\u3002\u6587\u7ae0\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u8bbe\u5907\u6620\u5c04\u5668\u7684\u5de5\u4f5c\u539f\u7406\u3001\u6838\u5fc3\u7ec4\u4ef6\uff08\u5982\u76ee\u6807\u548c\u6620\u5c04\u8868\uff09\u3001\u5e38\u89c1\u7684\u4f7f\u7528\u573a\u666f\uff08\u5305\u62ecLVM\u3001\u8f6f\u4ef6RAID\u3001\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u548c\u5feb\u7167\u5907\u4efd\uff09\uff0c\u5e76\u63d0\u4f9b\u4e86\u5b9e\u9645\u64cd\u4f5c\u793a\u4f8b\u4ee5\u53ca\u8bbe\u5907\u6620\u5c04\u5668\u7ba1\u7406\u5de5\u5177\uff08dmsetup\uff09\u7684\u57fa\u672c\u7528\u6cd5\u3002","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/\u63a2\u7d22linux\u5185\u6838\u8bbe\u5907\u6620\u5c04\u5668\uff08device-mapper\uff09\uff1a\u7075\u6d3b\u7684\u5b58\u50a8\u7ba1\u7406\u89e3\/","og_locale":"zh_CN","og_type":"article","og_title":"Linux Device Mapper - TianYa Blog","og_description":"\u8fd9\u7bc7\u6587\u7ae0\u6df1\u5165\u63a2\u8ba8\u4e86Linux\u5185\u6838\u4e2d\u7684\u8bbe\u5907\u6620\u5c04\u5668\uff08Device Mapper\uff09\u3002\u8bbe\u5907\u6620\u5c04\u5668\u5141\u8bb8\u5728\u7269\u7406\u5b58\u50a8\u8bbe\u5907\u4e0a\u521b\u5efa\u865a\u62df\u5757\u8bbe\u5907\uff0c\u4ee5\u652f\u6301\u8bf8\u5982\u903b\u8f91\u5377\u7ba1\u7406\uff08LVM\uff09\u3001\u8f6f\u4ef6RAID\u548c\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u7b49\u9ad8\u7ea7\u5b58\u50a8\u7ba1\u7406\u529f\u80fd\u3002\u6587\u7ae0\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u8bbe\u5907\u6620\u5c04\u5668\u7684\u5de5\u4f5c\u539f\u7406\u3001\u6838\u5fc3\u7ec4\u4ef6\uff08\u5982\u76ee\u6807\u548c\u6620\u5c04\u8868\uff09\u3001\u5e38\u89c1\u7684\u4f7f\u7528\u573a\u666f\uff08\u5305\u62ecLVM\u3001\u8f6f\u4ef6RAID\u3001\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u548c\u5feb\u7167\u5907\u4efd\uff09\uff0c\u5e76\u63d0\u4f9b\u4e86\u5b9e\u9645\u64cd\u4f5c\u793a\u4f8b\u4ee5\u53ca\u8bbe\u5907\u6620\u5c04\u5668\u7ba1\u7406\u5de5\u5177\uff08dmsetup\uff09\u7684\u57fa\u672c\u7528\u6cd5\u3002","og_url":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/\u63a2\u7d22linux\u5185\u6838\u8bbe\u5907\u6620\u5c04\u5668\uff08device-mapper\uff09\uff1a\u7075\u6d3b\u7684\u5b58\u50a8\u7ba1\u7406\u89e3\/","og_site_name":"TianYa Blog","article_published_time":"2024-06-16T15:21:57+00:00","article_modified_time":"2024-06-18T14:52:46+00:00","og_image":[{"url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/f\/fb\/The_Linux_Storage_Stack_Diagram.svg\/800px-The_Linux_Storage_Stack_Diagram.svg.png","type":"","width":"","height":""}],"author":"zdm","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"zdm","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"1 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/#article","isPartOf":{"@id":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/"},"author":{"name":"zdm","@id":"https:\/\/www.swreader.com\/#\/schema\/person\/9c90501e33afc9307d757bc8cfaf1c6f"},"headline":"Linux Device Mapper","datePublished":"2024-06-16T15:21:57+00:00","dateModified":"2024-06-18T14:52:46+00:00","mainEntityOfPage":{"@id":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/"},"wordCount":47,"commentCount":0,"publisher":{"@id":"https:\/\/www.swreader.com\/#\/schema\/person\/9c90501e33afc9307d757bc8cfaf1c6f"},"image":{"@id":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/#primaryimage"},"thumbnailUrl":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/f\/fb\/The_Linux_Storage_Stack_Diagram.svg\/800px-The_Linux_Storage_Stack_Diagram.svg.png","keywords":["Andrioid","Device Mapper","dynamic partition","linux"],"articleSection":["Android","blog","linux"],"inLanguage":"zh-Hans","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/","url":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/","name":"Linux Device Mapper - TianYa Blog","isPartOf":{"@id":"https:\/\/www.swreader.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/#primaryimage"},"image":{"@id":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/#primaryimage"},"thumbnailUrl":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/f\/fb\/The_Linux_Storage_Stack_Diagram.svg\/800px-The_Linux_Storage_Stack_Diagram.svg.png","datePublished":"2024-06-16T15:21:57+00:00","dateModified":"2024-06-18T14:52:46+00:00","description":"\u8fd9\u7bc7\u6587\u7ae0\u6df1\u5165\u63a2\u8ba8\u4e86Linux\u5185\u6838\u4e2d\u7684\u8bbe\u5907\u6620\u5c04\u5668\uff08Device Mapper\uff09\u3002\u8bbe\u5907\u6620\u5c04\u5668\u5141\u8bb8\u5728\u7269\u7406\u5b58\u50a8\u8bbe\u5907\u4e0a\u521b\u5efa\u865a\u62df\u5757\u8bbe\u5907\uff0c\u4ee5\u652f\u6301\u8bf8\u5982\u903b\u8f91\u5377\u7ba1\u7406\uff08LVM\uff09\u3001\u8f6f\u4ef6RAID\u548c\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u7b49\u9ad8\u7ea7\u5b58\u50a8\u7ba1\u7406\u529f\u80fd\u3002\u6587\u7ae0\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u8bbe\u5907\u6620\u5c04\u5668\u7684\u5de5\u4f5c\u539f\u7406\u3001\u6838\u5fc3\u7ec4\u4ef6\uff08\u5982\u76ee\u6807\u548c\u6620\u5c04\u8868\uff09\u3001\u5e38\u89c1\u7684\u4f7f\u7528\u573a\u666f\uff08\u5305\u62ecLVM\u3001\u8f6f\u4ef6RAID\u3001\u52a0\u5bc6\u6587\u4ef6\u7cfb\u7edf\u548c\u5feb\u7167\u5907\u4efd\uff09\uff0c\u5e76\u63d0\u4f9b\u4e86\u5b9e\u9645\u64cd\u4f5c\u793a\u4f8b\u4ee5\u53ca\u8bbe\u5907\u6620\u5c04\u5668\u7ba1\u7406\u5de5\u5177\uff08dmsetup\uff09\u7684\u57fa\u672c\u7528\u6cd5\u3002","breadcrumb":{"@id":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/"]}]},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/#primaryimage","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/f\/fb\/The_Linux_Storage_Stack_Diagram.svg\/800px-The_Linux_Storage_Stack_Diagram.svg.png","contentUrl":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/f\/fb\/The_Linux_Storage_Stack_Diagram.svg\/800px-The_Linux_Storage_Stack_Diagram.svg.png"},{"@type":"BreadcrumbList","@id":"https:\/\/www.swreader.com\/index.php\/2024\/06\/16\/%e6%8e%a2%e7%b4%a2linux%e5%86%85%e6%a0%b8%e8%ae%be%e5%a4%87%e6%98%a0%e5%b0%84%e5%99%a8%ef%bc%88device-mapper%ef%bc%89%ef%bc%9a%e7%81%b5%e6%b4%bb%e7%9a%84%e5%ad%98%e5%82%a8%e7%ae%a1%e7%90%86%e8%a7%a3\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.swreader.com\/"},{"@type":"ListItem","position":2,"name":"Linux Device Mapper"}]},{"@type":"WebSite","@id":"https:\/\/www.swreader.com\/#website","url":"https:\/\/www.swreader.com\/","name":"TianYa Blog","description":"Technology And Life","publisher":{"@id":"https:\/\/www.swreader.com\/#\/schema\/person\/9c90501e33afc9307d757bc8cfaf1c6f"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.swreader.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"zh-Hans"},{"@type":["Person","Organization"],"@id":"https:\/\/www.swreader.com\/#\/schema\/person\/9c90501e33afc9307d757bc8cfaf1c6f","name":"zdm","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/secure.gravatar.com\/avatar\/2670c9b6412a56381880b2ca03988f659e8a378fe7332238a4a741b660a60997?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/2670c9b6412a56381880b2ca03988f659e8a378fe7332238a4a741b660a60997?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/2670c9b6412a56381880b2ca03988f659e8a378fe7332238a4a741b660a60997?s=96&d=mm&r=g","caption":"zdm"},"logo":{"@id":"https:\/\/secure.gravatar.com\/avatar\/2670c9b6412a56381880b2ca03988f659e8a378fe7332238a4a741b660a60997?s=96&d=mm&r=g"},"sameAs":["http:\/\/www.swreader.com"],"url":"https:\/\/www.swreader.com\/index.php\/author\/zdm\/"}]}},"_links":{"self":[{"href":"https:\/\/www.swreader.com\/index.php\/wp-json\/wp\/v2\/posts\/7","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.swreader.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.swreader.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.swreader.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.swreader.com\/index.php\/wp-json\/wp\/v2\/comments?post=7"}],"version-history":[{"count":4,"href":"https:\/\/www.swreader.com\/index.php\/wp-json\/wp\/v2\/posts\/7\/revisions"}],"predecessor-version":[{"id":45,"href":"https:\/\/www.swreader.com\/index.php\/wp-json\/wp\/v2\/posts\/7\/revisions\/45"}],"wp:attachment":[{"href":"https:\/\/www.swreader.com\/index.php\/wp-json\/wp\/v2\/media?parent=7"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.swreader.com\/index.php\/wp-json\/wp\/v2\/categories?post=7"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.swreader.com\/index.php\/wp-json\/wp\/v2\/tags?post=7"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}