{"id":51988,"date":"2024-12-03T09:20:20","date_gmt":"2024-12-03T01:20:20","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51988\/"},"modified":"2024-12-03T09:20:20","modified_gmt":"2024-12-03T01:20:20","slug":"linux%e7%94%a8%e4%b8%8d%e7%94%a8lvm","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51988\/","title":{"rendered":"linux\u7528\u4e0d\u7528lvm"},"content":{"rendered":"

<\/b> <\/p>\n

linux\u7528\u4e0d\u7528lvm<\/h1>\n

\u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300alinux\u7528\u4e0d\u7528lvm\u300b<\/span>\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3<\/span>\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<\/p>\n

\n

linux\u7528lvm\u3002LVM\u662f\u6307\u903b\u8f91\u76d8\u5377\u7ba1\u7406\uff0c\u662fLinux\u73af\u5883\u4e0b\u5bf9\u78c1\u76d8\u5206\u533a\u8fdb\u884c\u7ba1\u7406\u7684\u4e00\u79cd\u673a\u5236\uff0cLVM\u662f\u5efa\u7acb\u5728\u786c\u76d8\u548c\u5206\u533a\u4e4b\u4e0a\u7684\u4e00\u4e2a\u903b\u8f91\u5c42\uff0c\u6765\u63d0\u9ad8\u78c1\u76d8\u5206\u533a\u7ba1\u7406\u7684\u7075\u6d3b\u6027\u3002LVM\u6700\u5927\u7684\u7279\u70b9\u5c31\u662f\u53ef\u4ee5\u5bf9\u78c1\u76d8\u8fdb\u884c\u52a8\u6001\u7ba1\u7406\u3002\u56e0\u4e3a\u903b\u8f91\u5377\u7684\u5927\u5c0f\u662f\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u7684\uff0c\u800c\u4e14\u4e0d\u4f1a\u4e22\u5931\u73b0\u6709\u7684\u6570\u636e\uff1b\u5982\u679c\u65b0\u589e\u52a0\u4e86\u786c\u76d8\uff0c\u5176\u4e5f\u4e0d\u4f1a\u6539\u53d8\u73b0\u6709\u4e0a\u5c42\u7684\u903b\u8f91\u5377\u3002\u4f5c\u4e3a\u4e00\u4e2a\u52a8\u6001\u78c1\u76d8\u7ba1\u7406\u673a\u5236\uff0c\u903b\u8f91\u5377\u6280\u672f\u5927\u5927\u63d0\u9ad8\u4e86\u78c1\u76d8\u7ba1\u7406\u7684\u7075\u6d3b\u6027\u3002<\/p>\n<\/blockquote>\n

LVM\u7b80\u4ecb<\/h3>\n

LVM\u662f\u903b\u8f91\u76d8\u5377\u7ba1\u7406\uff08Logical Volume Manager\uff09\u7684\u7b80\u79f0\uff0c\u5b83\u662fLinux\u73af\u5883\u4e0b\u5bf9\u78c1\u76d8\u5206\u533a\u8fdb\u884c\u7ba1\u7406\u7684\u4e00\u79cd\u673a\u5236\uff0cLVM\u662f\u5efa\u7acb\u5728\u786c\u76d8\u548c\u5206\u533a\u4e4b\u4e0a\u7684\u4e00\u4e2a\u903b\u8f91\u5c42\uff0c\u6765\u63d0\u9ad8\u78c1\u76d8\u5206\u533a\u7ba1\u7406\u7684\u7075\u6d3b\u6027\u3002<\/p>\n

LVM\u7684\u5de5\u4f5c\u539f\u7406\u5176\u5b9e\u5f88\u7b80\u5355\uff0c\u5b83\u5c31\u662f\u901a\u8fc7\u5c06\u5e95\u5c42\u7684\u7269\u7406\u786c\u76d8\u62bd\u8c61\u7684\u5c01\u88c5\u8d77\u6765\uff0c\u7136\u540e\u4ee5\u903b\u8f91\u5377\u7684\u65b9\u5f0f\u5448\u73b0\u7ed9\u4e0a\u5c42\u5e94\u7528\u3002\u5728\u4f20\u7edf\u7684\u78c1\u76d8\u7ba1\u7406\u673a\u5236\u4e2d\uff0c\u6211\u4eec\u7684\u4e0a\u5c42\u5e94\u7528\u662f\u76f4\u63a5\u8bbf\u95ee\u6587\u4ef6\u7cfb\u7edf\uff0c\u4ece\u800c\u5bf9\u5e95\u5c42\u7684\u7269\u7406\u786c\u76d8\u8fdb\u884c\u8bfb\u53d6\uff0c\u800c\u5728LVM\u4e2d\uff0c\u5176\u901a\u8fc7\u5bf9\u5e95\u5c42\u7684\u786c\u76d8\u8fdb\u884c\u5c01\u88c5\uff0c\u5f53\u6211\u4eec\u5bf9\u5e95\u5c42\u7684\u7269\u7406\u786c\u76d8\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u5176\u4e0d\u518d\u662f\u9488\u5bf9\u4e8e\u5206\u533a\u8fdb\u884c\u64cd\u4f5c\uff0c\u800c\u662f\u901a\u8fc7\u4e00\u4e2a\u53eb\u505a\u903b\u8f91\u5377\u7684\u4e1c\u897f\u6765\u5bf9\u5176\u8fdb\u884c\u5e95\u5c42\u7684\u78c1\u76d8\u7ba1\u7406\u64cd\u4f5c\u3002\u6bd4\u5982\u8bf4\u6211\u589e\u52a0\u4e00\u4e2a\u7269\u7406\u786c\u76d8\uff0c\u8fd9\u4e2a\u65f6\u5019\u4e0a\u5c42\u7684\u670d\u52a1\u662f\u611f\u89c9\u4e0d\u5230\u7684\uff0c\u56e0\u4e3a\u5448\u73b0\u7ed9\u4e0a\u5c42\u670d\u52a1\u7684\u662f\u4ee5\u903b\u8f91\u5377\u7684\u65b9\u5f0f\u3002<\/p>\n

LVM\u6700\u5927\u7684\u7279\u70b9\u5c31\u662f\u53ef\u4ee5\u5bf9\u78c1\u76d8\u8fdb\u884c\u52a8\u6001\u7ba1\u7406\u3002\u56e0\u4e3a\u903b\u8f91\u5377\u7684\u5927\u5c0f\u662f\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u7684\uff0c\u800c\u4e14\u4e0d\u4f1a\u4e22\u5931\u73b0\u6709\u7684\u6570\u636e\u3002\u5982\u679c\u6211\u4eec\u65b0\u589e\u52a0\u4e86\u786c\u76d8\uff0c\u5176\u4e5f\u4e0d\u4f1a\u6539\u53d8\u73b0\u6709\u4e0a\u5c42\u7684\u903b\u8f91\u5377\u3002\u4f5c\u4e3a\u4e00\u4e2a\u52a8\u6001\u78c1\u76d8\u7ba1\u7406\u673a\u5236\uff0c\u903b\u8f91\u5377\u6280\u672f\u5927\u5927\u63d0\u9ad8\u4e86\u78c1\u76d8\u7ba1\u7406\u7684\u7075\u6d3b\u6027\u3002<\/p>\n

\u57fa\u672c\u7684\u903b\u8f91\u5377\u7ba1\u7406\u6982\u5ff5\uff1a<\/strong><\/p>\n

    \n
  • \n

    PV\uff08Physical Volume\uff09- \u7269\u7406\u5377
    \u7269\u7406\u5377\u5728\u903b\u8f91\u5377\u7ba1\u7406\u4e2d\u5904\u4e8e\u6700\u5e95\u5c42\uff0c\u5b83\u53ef\u4ee5\u662f\u5b9e\u9645\u7269\u7406\u786c\u76d8\u4e0a\u7684\u5206\u533a<\/strong>\uff0c\u4e5f\u53ef\u4ee5\u662f\u6574\u4e2a\u7269\u7406\u786c\u76d8<\/strong>\uff0c\u4e5f\u53ef\u4ee5\u662fraid\u8bbe\u5907<\/strong>\u3002<\/p>\n<\/li>\n

  • \n

    VG\uff08Volumne Group\uff09- \u5377\u7ec4
    \u5377\u7ec4\u5efa\u7acb\u5728\u7269\u7406\u5377\u4e4b\u4e0a\uff0c\u4e00\u4e2a\u5377\u7ec4\u4e2d\u81f3\u5c11\u8981\u5305\u62ec\u4e00\u4e2a\u7269\u7406\u5377\uff0c\u5728\u5377\u7ec4\u5efa\u7acb\u4e4b\u540e\u53ef\u52a8\u6001\u6dfb\u52a0\u7269\u7406\u5377\u5230\u5377\u7ec4\u4e2d\u3002\u4e00\u4e2a\u903b\u8f91\u5377\u7ba1\u7406\u7cfb\u7edf\u5de5\u7a0b\u4e2d\u53ef\u4ee5\u53ea\u6709\u4e00\u4e2a\u5377\u7ec4\uff0c\u4e5f\u53ef\u4ee5\u62e5\u6709\u591a\u4e2a\u5377\u7ec4\u3002<\/p>\n<\/li>\n

  • \n

    LV\uff08Logical Volume\uff09- \u903b\u8f91\u5377
    \u903b\u8f91\u5377\u5efa\u7acb\u5728\u5377\u7ec4\u4e4b\u4e0a\uff0c\u5377\u7ec4\u4e2d\u7684\u672a\u5206\u914d\u7a7a\u95f4\u53ef\u4ee5\u7528\u4e8e\u5efa\u7acb\u65b0\u7684\u903b\u8f91\u5377\uff0c\u903b\u8f91\u5377\u5efa\u7acb\u540e\u53ef\u4ee5\u52a8\u6001\u5730\u6269\u5c55\u548c\u7f29\u5c0f\u7a7a\u95f4\u3002\u7cfb\u7edf\u4e2d\u7684\u591a\u4e2a\u903b\u8f91\u5377\u53ef\u4ee5\u5c5e\u4e8e\u540c\u4e00\u4e2a\u5377\u7ec4\uff0c\u4e5f\u53ef\u4ee5\u5c5e\u4e8e\u4e0d\u540c\u7684\u591a\u4e2a\u5377\u7ec4\u3002<\/p>\n<\/li>\n<\/ul>\n

    \"linux\u7528\u4e0d\u7528lvm\u63d2\u56fe\"<\/p>\n

      \n
    • \n

      PE\uff08Physical Extent\uff09- \u7269\u7406\u5757<\/p>\n

      LVM \u9ed8\u8ba4\u4f7f\u75284MB\u7684PE\u533a\u5757\uff0c\u800cLVM\u7684LV\u6700\u591a\u4ec5\u80fd\u542b\u670965534\u4e2aPE (lvm1 \u7684\u683c\u5f0f)\uff0c\u56e0\u6b64\u9ed8\u8ba4\u7684LVM\u7684LV\u6700\u5927\u5bb9\u91cf\u4e3a4M*65534\/(1024M\/G)=256G\u3002PE\u662f\u6574\u4e2aLVM \u6700\u5c0f\u7684\u50a8\u5b58\u533a\u5757\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5176\u5b9e\u6211\u4eec\u7684\u8d44\u6599\u90fd\u662f\u7531\u5199\u5165PE \u6765\u5904\u7406\u7684\u3002\u7b80\u5355\u7684\u8bf4\uff0c\u8fd9\u4e2aPE \u5c31\u6709\u70b9\u50cf\u6587\u4ef6\u7cfb\u7edf\u91cc\u9762\u7684block \u5927\u5c0f\u3002\u6240\u4ee5\u8c03\u6574PE \u4f1a\u5f71\u54cd\u5230LVM \u7684\u6700\u5927\u5bb9\u91cf\uff01\u4e0d\u8fc7\uff0c\u5728 CentOS 6.x \u4ee5\u540e\uff0c\u7531\u4e8e\u76f4\u63a5\u4f7f\u7528 lvm2 \u7684\u5404\u9879\u683c\u5f0f\u529f\u80fd\uff0c\u56e0\u6b64\u8fd9\u4e2a\u9650\u5236\u5df2\u7ecf\u4e0d\u5b58\u5728\u4e86\u3002<\/p>\n<\/li>\n<\/ul>\n

      \u64cd\u4f5c\u8fc7\u7a0b<\/h3>\n

      1\u3001\u5f80\u865a\u62df\u673a\u4e2d\u6dfb\u52a0\u4e24\u5757\u786c\u76d8<\/strong><\/p>\n

      \"linux\u7528\u4e0d\u7528lvm\u63d2\u56fe1\"<\/p>\n

      2\u3001\u4f7f\u7528pvcreate\u521b\u5efa\u7269\u7406\u5377PV\uff0c\u5e76\u4f7f\u7528pvs\u67e5\u770b\u4fe1\u606f\u6216pvdisplay\u67e5\u770b\u8be6\u7ec6\u4fe1\u606f<\/strong><\/p>\n

      \"linux\u7528\u4e0d\u7528lvm\u63d2\u56fe2\"<\/p>\n

      3\u3001\u521b\u5efa\u5377\u7ec4VG<\/strong><\/p>\n

      \u4f7f\u7528vgcreate\u521b\u5efa\u5377\u7ec4VG\uff0c\u5e76\u4e14\u6b64\u5904\u53ef\u4ee5-s\u9009\u9879\u6307\u5b9aPE\uff08LE\uff09\u7684\u5927\u5c0f\uff0c\uff08\u9ed8\u8ba4PE\u5927\u5c0f4M\uff09<\/p>\n

      \"linux\u7528\u4e0d\u7528lvm\u63d2\u56fe3\"<\/p>\n

      4\u3001\u521b\u5efa\u903b\u8f91\u5377LV<\/strong><\/p>\n

      \u4f7f\u7528lvcreate\u521b\u5efaLV\u3002lvcreate -n lvname -L lvsize(M\uff0cG) vgname<\/p>\n

      \"linux\u7528\u4e0d\u7528lvm\u63d2\u56fe4\"<\/p>\n

      \"linux\u7528\u4e0d\u7528lvm\u63d2\u56fe5\"<\/p>\n

      5\u3001\u683c\u5f0f\u5316\u4e0e\u6302\u8f7d <\/strong><\/p>\n

      \"linux\u7528\u4e0d\u7528lvm\u63d2\u56fe6\"<\/p>\n

      \"linux\u7528\u4e0d\u7528lvm\u63d2\u56fe7\"<\/p>\n

      6\u3001\u903b\u8f91\u5377\u6269\u5bb9<\/strong><\/p>\n

      \u5728\u786e\u8ba4\u6709\u591a\u4f59\u7a7a\u95f4\u7684\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528lvextend\u547d\u4ee4\u6269\u5c55\u903b\u8f91\u5377LV\u7684\u5927\u5c0f<\/p>\n

      \"linux\u7528\u4e0d\u7528lvm\u63d2\u56fe8\"<\/p>\n

      \u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300alinux\u7528\u4e0d\u7528lvm\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

      linux\u7528\u4e0d\u7528lvm \u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300alinux\u7528\u4e0d\u7528lvm\u300b\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01 linux\u7528lvm\u3002LVM\u662f\u6307\u903b\u8f91\u76d8\u5377\u7ba1\u7406\uff0c\u662fLinux\u73af\u5883\u4e0b\u5bf9\u78c1\u76d8\u5206\u533a\u8fdb\u884c\u7ba1\u7406\u7684\u4e00\u79cd\u673a\u5236\uff0cLVM\u662f\u5efa\u7acb\u5728\u786c\u76d8\u548c\u5206\u533a\u4e4b\u4e0a\u7684\u4e00\u4e2a\u903b\u8f91\u5c42\uff0c\u6765\u63d0\u9ad8\u78c1\u76d8\u5206\u533a\u7ba1\u7406\u7684\u7075\u6d3b\u6027\u3002LVM\u6700\u5927\u7684\u7279\u70b9\u5c31\u662f\u53ef\u4ee5\u5bf9\u78c1\u76d8\u8fdb\u884c\u52a8\u6001\u7ba1\u7406\u3002\u56e0\u4e3a\u903b\u8f91\u5377\u7684\u5927\u5c0f\u662f\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u7684\uff0c\u800c\u4e14\u4e0d\u4f1a\u4e22\u5931\u73b0\u6709\u7684\u6570\u636e\uff1b\u5982\u679c\u65b0\u589e\u52a0\u4e86\u786c\u76d8\uff0c\u5176\u4e5f\u4e0d\u4f1a\u6539\u53d8\u73b0\u6709\u4e0a\u5c42\u7684\u903b\u8f91\u5377\u3002\u4f5c\u4e3a\u4e00\u4e2a\u52a8\u6001\u78c1\u76d8\u7ba1\u7406\u673a\u5236\uff0c\u903b\u8f91\u5377\u6280\u672f\u5927\u5927\u63d0\u9ad8\u4e86\u78c1\u76d8\u7ba1\u7406\u7684\u7075\u6d3b\u6027\u3002 LVM\u7b80\u4ecb LVM\u662f\u903b\u8f91\u76d8\u5377\u7ba1\u7406\uff08Logical Volume Manager\uff09\u7684\u7b80\u79f0\uff0c\u5b83\u662fLinux\u73af\u5883\u4e0b\u5bf9\u78c1\u76d8\u5206\u533a\u8fdb\u884c\u7ba1\u7406\u7684\u4e00\u79cd\u673a\u5236\uff0cLVM\u662f\u5efa\u7acb\u5728\u786c\u76d8\u548c\u5206\u533a\u4e4b\u4e0a\u7684\u4e00\u4e2a\u903b\u8f91\u5c42\uff0c\u6765\u63d0\u9ad8\u78c1\u76d8\u5206\u533a\u7ba1\u7406\u7684\u7075\u6d3b\u6027\u3002 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