{"id":108914,"date":"2026-09-22T23:41:14","date_gmt":"2026-09-22T15:41:14","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/108914.html"},"modified":"2026-09-22T23:41:14","modified_gmt":"2026-09-22T15:41:14","slug":"%e5%88%ab%e6%8a%8a%e7%a3%81%e7%9b%98%e5%86%97%e4%bd%99%e5%92%8c%e5%bc%b9%e6%80%a7%e6%89%a9%e5%ae%b9%e6%90%9e%e6%b7%b7%ef%bc%9a%e4%b8%80%e7%af%87%e8%ae%b2%e9%80%8f-linux-raid-%e4%b8%8e-lvm-%e9%80%bb","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/108914.html","title":{"rendered":"\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7\uff1a\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377"},"content":{"rendered":"

\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7：\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377<\/h2>\n

\u672c\u6587\u4ee5\u5b9e\u8df5\u603b\u7ed3\u7684\u89c6\u89d2，\u8bb0\u5f55 Linux \u547d\u4ee4\u884c\u5b66\u4e60\u4e2d\u300c\u5b58\u50a8\u6280\u672f\u8fdb\u9636\u300d\u4e24\u5927\u4e3b\u9898\u7684\u5b9e\u9645\u64cd\u4f5c\u3001\u8e29\u8fc7\u7684\u5751\u548c\u5fc3\u5f97，\u9002\u5408\u65b0\u624b\u7167\u7740\u52a8\u624b\u7ec3\u4e60\u3002
\n\u793a\u4f8b\u63d0\u793a\u7b26：root \u7528\u6237\u4e3a [root@server ~]#\u3002
\n\u5168\u6587\u5206\u4e24\u5927\u5757：<\/p>\n

  • RAID \u78c1\u76d8\u5197\u4f59\u9635\u5217：\u7528\u591a\u5757\u76d8\u300c\u62fc\u300d\u51fa\u9ad8\u6027\u80fd \/ \u9ad8\u53ef\u9760\u7684\u5b58\u50a8，\u4ee5\u53ca\u7528 mdadm \u7ba1\u7406\u8f6f RAID\u3002<\/li>\n
  • LVM \u903b\u8f91\u5377\u7ba1\u7406：\u628a\u78c1\u76d8\u53d8\u6210\u300c\u5f39\u6027\u5b58\u50a8\u6c60\u300d，\u968f\u65f6\u6269\u5c55 \/ \u7f29\u51cf，\u6838\u5fc3\u662f PV\u3001VG\u3001LV \u4e09\u7ea7\u7ed3\u6784\u3002<\/li>\n

    \u4e00\u53e5\u8bdd\u70b9\u9898：RAID \u89e3\u51b3\u300c\u591a\u5757\u76d8\u600e\u4e48\u534f\u4f5c\u3001\u574f\u4e86\u600e\u4e48\u529e\u300d，LVM \u89e3\u51b3\u300c\u7a7a\u95f4\u4e0d\u591f\u600e\u4e48\u7075\u6d3b\u6269\u7f29\u300d\u3002\u4e24\u8005\u5e38\u914d\u5408\u4f7f\u7528（\u5148\u505a RAID，\u518d\u5728\u4e0a\u9762\u505a LVM）\u3002<\/p>\n

    \n

    \u7b2c\u4e00\u90e8\u5206：RAID \u78c1\u76d8\u5197\u4f59\u9635\u5217<\/h3>\n

    \u4e00\u3001\u73af\u5883\u51c6\u5907<\/h4>\n

    \u865a\u62df\u673a\u6dfb\u52a0 6 \u5757 20G \u786c\u76d8，\u8bbe\u5907\u540d\u4e3a sd{b..g}（\u5373 \/dev\/sdb ~ \/dev\/sdg）\u3002\u540e\u9762\u6240\u6709 RAID \u5b9e\u9a8c\u90fd\u5728\u8fd9 6 \u5757\u76d8\u4e0a\u505a\u3002<\/p>\n

    \u4e8c\u3001RAID \u6280\u672f\u5386\u53f2<\/h4>\n

    1988 \u5e74，\u7f8e\u56fd\u52a0\u5dde\u5927\u5b66\u4f2f\u514b\u5229\u5206\u6821\u7684 D. A. Patterson \u6559\u6388\u7b49\u4eba\u5728\u8bba\u6587 \u201cA Case of Redundant Array of Inexpensive Disks\u201d \u4e2d\u9996\u6b21\u63d0\u51fa RAID \u6982\u5ff5，\u5373\u5ec9\u4ef7\u78c1\u76d8\u5197\u4f59\u9635\u5217（Redundant Array of Inexpensive Disks）\u3002\u7531\u4e8e\u5f53\u65f6\u5927\u5bb9\u91cf\u78c1\u76d8\u6602\u8d35，RAID \u7684\u57fa\u672c\u601d\u60f3\u662f\u628a\u591a\u4e2a\u5bb9\u91cf\u8f83\u5c0f\u3001\u76f8\u5bf9\u5ec9\u4ef7\u7684\u78c1\u76d8\u6709\u673a\u7ec4\u5408，\u7528\u8f83\u4f4e\u6210\u672c\u83b7\u5f97\u4e0e\u6602\u8d35\u5927\u5bb9\u91cf\u78c1\u76d8\u76f8\u5f53\u7684\u5bb9\u91cf\u3001\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u540e\u6765\u78c1\u76d8\u6210\u672c\u4e0d\u65ad\u4e0b\u964d，\u300c\u5ec9\u4ef7\u300d\u5df2\u65e0\u610f\u4e49，RAID \u54a8\u8be2\u59d4\u5458\u4f1a（RAB）\u51b3\u5b9a\u7528\u300c\u72ec\u7acb\u300d\u66ff\u4ee3\u300c\u5ec9\u4ef7\u300d，\u4e8e\u662f RAID \u53d8\u6210\u4e86\u72ec\u7acb\u78c1\u76d8\u5197\u4f59\u9635\u5217（Redundant Array of Independent Disks）\u2014\u2014\u53ea\u662f\u540d\u79f0\u53d8\u5316，\u5b9e\u8d28\u6ca1\u53d8\u3002<\/p>\n

    \u8bb0\u4f4f：RAID \u7684\u7cbe\u9ad3\u5c31\u4e09\u4e2a\u8bcd\u2014\u2014\u6761\u5e26\u5316（\u63d0\u901f）\u3001\u955c\u50cf \/ \u6821\u9a8c（\u4fdd\u547d）\u3001\u7ec4\u5408（\u6269\u5bb9）\u3002\u540e\u9762\u6240\u6709\u7ea7\u522b\u90fd\u662f\u8fd9\u4e09\u62db\u7684\u6392\u5217\u7ec4\u5408\u3002<\/p>\n

    \u4e09\u3001RAID \u5b9e\u73b0\u65b9\u5f0f<\/h4>\n

    \u4ece\u5b9e\u73b0\u89d2\u5ea6\u770b，RAID \u5206\u4e09\u79cd：<\/p>\n\n\u7c7b\u578b\u7279\u70b9\u6210\u672c<\/tr>\n\n\n\n\n
    \u8f6f RAID<\/td>\n\u6240\u6709\u529f\u80fd\u7531\u64cd\u4f5c\u7cfb\u7edf\u548c CPU \u5b8c\u6210，\u65e0\u72ec\u7acb RAID \u82af\u7247\u548c I\/O \u82af\u7247，\u6548\u7387\u6700\u4f4e<\/td>\n\u4f4e<\/td>\n<\/tr>\n
    \u786c RAID<\/td>\n\u914d\u5907\u4e13\u95e8\u7684 RAID \u63a7\u5236\/\u5904\u7406\u82af\u7247\u3001I\/O \u82af\u7247\u548c\u9635\u5217\u7f13\u51b2，\u4e0d\u5360 CPU<\/td>\n\u9ad8<\/td>\n<\/tr>\n
    \u8f6f\u786c\u6df7\u5408 RAID<\/td>\n\u6709 RAID \u63a7\u5236\/\u5904\u7406\u82af\u7247，\u4f46\u7f3a I\/O \u5904\u7406\u82af\u7247，\u9700 CPU \u548c\u9a71\u52a8\u914d\u5408<\/td>\n\u4e2d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u8f6f RAID \u624d\u662f\u672c\u6587\u5b66\u7684\u91cd\u70b9：Linux \u7528 mdadm \u5de5\u5177\u5c31\u80fd\u5728\u51e0\u5757\u666e\u901a\u76d8\u4e0a\u505a\u8f6f RAID，\u96f6\u989d\u5916\u786c\u4ef6\u6210\u672c\u3002<\/p>\n

    \u56db\u3001RAID \u7ea7\u522b\u8be6\u89e3<\/h4>\n

    RAID \u4e3b\u8981\u5229\u7528\u6570\u636e\u6761\u5e26\u3001\u955c\u50cf\u3001\u6570\u636e\u6821\u9a8c\u4e09\u79cd\u6280\u672f\u83b7\u5f97\u9ad8\u6027\u80fd\u3001\u53ef\u9760\u6027\u3001\u5bb9\u9519\u548c\u6269\u5c55\u6027\u3002Patterson \u7684\u8bba\u6587\u5b9a\u4e49\u4e86 RAID1~RAID5，1988 \u5e74\u540e\u53c8\u6269\u5c55\u4e86 RAID0 \u548c RAID6\u3002\u76ee\u524d\u4e1a\u754c\u516c\u8ba4\u6807\u51c6\u662f RAID0~RAID5，\u5b9e\u9645\u5e94\u7528\u6700\u591a\u7684\u7ea7\u522b\u662f RAID0\u3001RAID1\u3001RAID4\u3001RAID5\u3001RAID6\u3001RAID10\u3002<\/p>\n

    \u91cd\u8981\u8ba4\u77e5：RAID \u6bcf\u4e2a\u7b49\u7ea7\u4ee3\u8868\u4e00\u79cd\u5b9e\u73b0\u65b9\u6cd5，\u7b49\u7ea7\u4e4b\u95f4\u65e0\u9ad8\u4f4e\u4e4b\u5206，\u5e94\u6309\u53ef\u7528\u6027\u3001\u6027\u80fd\u3001\u6210\u672c\u7efc\u5408\u9009\u62e9\u3002<\/p>\n

    \"\u5916\u94fe\u56fe\u7247\u8f6c\u5b58\u5931\u8d25,\u6e90\u7ad9\u53ef\u80fd\u6709\u9632\u76d7\u94fe\u673a\u5236,\u5efa\u8bae\u5c06\u56fe\u7247\u4fdd\u5b58\u4e0b\u6765\u76f4\u63a5\u4e0a\u4f20\"<\/p>\n

    4.1 RAID 0（\u6761\u5e26，\u53ea\u63d0\u901f\u4e0d\u4fdd\u547d）<\/h5>\n

    \u539f\u7406：\u6570\u636e\u6761\u5e26\u5316（striping），\u628a\u6570\u636e\u5207\u6210\u56fa\u5b9a\u5927\u5c0f\u5757，\u4f9d\u6b21\u5206\u6563\u5199\u5230\u591a\u4e2a\u76d8，\u4e0d\u505a\u4efb\u4f55\u5197\u4f59\u5907\u4efd\u3002\u4e24\u4e2a\u76d8\u65f6，\u7b2c\u4e00\u5757\u6570\u636e\u5199 A \u76d8\u3001\u7b2c\u4e8c\u5757\u5199 B \u76d8，\u5982\u6b64\u5faa\u73af\u3002\u56e0\u4e3a\u80fd\u540c\u65f6\u4ece\u591a\u5757\u76d8\u8bfb\u5199，\u901f\u5ea6\u5927\u5e45\u63d0\u5347\u3002<\/p>\n

    \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

      \n
    • \u9002\u7528\u573a\u666f：\u9700\u8981\u9ad8\u6027\u80fd\u3001\u4e0d\u5728\u4e4e\u5197\u4f59\u2014\u2014\u89c6\u9891\u7f16\u8f91\u3001\u5927\u578b\u6570\u636e\u5e93\u67e5\u8be2\u3001\u5b9e\u65f6\u6d41\u5a92\u4f53\u3002<\/li>\n
    • \u4f18\u70b9：\u9ad8\u6027\u80fd；\u6210\u672c\u4f4e（\u4e0d\u6d6a\u8d39\u76d8\u505a\u5907\u4efd）\u3002<\/li>\n
    • \u7f3a\u70b9：\u65e0\u5197\u4f59，\u4efb\u4f55\u4e00\u5757\u76d8\u574f\u4e86，\u6240\u6709\u6570\u636e\u90fd\u53ef\u80fd\u4e22；\u53ef\u9760\u6027\u4f4e\u3002<\/li>\n<\/ul>\n

      \u4e00\u53e5\u8bdd：RAID 0 \u662f\u300c\u901f\u5ea6\u72c2\u9b54\u3001\u8eab\u677f\u6781\u8106\u300d，\u78c1\u76d8\u8d8a\u591a\u8d8a\u5feb\u4e5f\u8d8a\u5371\u9669，\u5343\u4e07\u522b\u5b58\u91cd\u8981\u6570\u636e\u3002<\/p>\n

      4.2 RAID 1（\u955c\u50cf，\u53ea\u4fdd\u547d\u4e0d\u63d0\u901f）<\/h5>\n

      \u539f\u7406：\u6570\u636e\u955c\u50cf（mirroring），\u5199\u5165\u65f6\u628a\u6570\u636e\u5b8c\u6574\u590d\u5236\u5230\u4e24\u5757\u6216\u591a\u5757\u76d8，\u6bcf\u5757\u76d8\u90fd\u662f\u540c\u6837\u7684\u526f\u672c\u3002\u4e00\u5757\u76d8\u574f\u4e86，\u8fd8\u80fd\u4ece\u53e6\u4e00\u5757\u8bfb\u3002<\/p>\n

      \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

        \n
      • \u9002\u7528\u573a\u666f：\u5bf9\u5197\u4f59\u548c\u9ad8\u53ef\u7528\u8981\u6c42\u9ad8\u7684\u573a\u666f\u2014\u2014\u5173\u952e\u6570\u636e\u3001\u6570\u636e\u5e93\u670d\u52a1\u5668\u3001\u6587\u4ef6\u670d\u52a1\u5668\u3002<\/li>\n
      • \u4f18\u70b9：\u6570\u636e\u5197\u4f59；\u9ad8\u53ef\u7528；\u8bfb\u53d6\u6027\u80fd\u7565\u6709\u63d0\u5347（\u53ef\u5e76\u884c\u8bfb）\u3002<\/li>\n
      • \u7f3a\u70b9：\u6210\u672c\u9ad8（\u8981\u4e00\u534a\u7a7a\u95f4\u505a\u955c\u50cf）；\u5199\u6027\u80fd\u7565\u4f4e（\u8981\u5199\u591a\u4efd）\u3002<\/li>\n<\/ul>\n

        \u4e00\u53e5\u8bdd：RAID 1 \u662f\u300c\u53cc\u4fdd\u9669\u300d，\u4f46\u5bb9\u91cf\u53ea\u6709\u603b\u76d8\u6570\u7684\u4e00\u534a\u3002<\/p>\n

        4.3 RAID 5（\u6761\u5e26 + \u5355\u6821\u9a8c，\u6027\u4ef7\u6bd4\u4e4b\u738b）<\/h5>\n

        \u539f\u7406：\u6761\u5e26\u5316 + \u5206\u5e03\u5f0f\u5947\u5076\u6821\u9a8c\u3002\u6570\u636e\u548c\u6821\u9a8c\u4fe1\u606f\u4ea4\u9519\u5206\u6563\u5230\u5404\u76d8，\u574f\u4e00\u5757\u76d8\u65f6\u53ef\u901a\u8fc7\u6821\u9a8c\u4fe1\u606f\u91cd\u7b97\u6062\u590d\u3002\u517c\u987e\u6027\u80fd\u4e0e\u5197\u4f59\u3002<\/p>\n

        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

          \n
        • \u9002\u7528\u573a\u666f：\u6027\u80fd + \u5197\u4f59\u517c\u987e\u2014\u2014\u6587\u4ef6\u670d\u52a1\u5668\u3001\u6570\u636e\u5e93\u3001\u5c0f\u578b\u4f01\u4e1a\u3002<\/li>\n
        • \u4f18\u70b9：\u6027\u80fd\u8f83\u597d；\u6709\u5197\u4f59（\u5141\u8bb8\u574f 1 \u5757\u76d8）；\u6210\u672c\u4f4e（\u53ea\u6d6a\u8d39 1 \u5757\u76d8\u505a\u6821\u9a8c）\u3002<\/li>\n
        • \u7f3a\u70b9：\u5199\u6027\u80fd\u504f\u4f4e（\u5199\u65f6\u8981\u91cd\u7b97\u6821\u9a8c）；\u574f\u76d8\u6062\u590d\u671f\u95f4\u8bbf\u95ee\u53d8\u6162\u3001\u6709\u6570\u636e\u5b8c\u6574\u6027\u98ce\u9669\u3002<\/li>\n<\/ul>\n

          \u7a7a\u95f4\u516c\u5f0f：N \u5757\u76d8\u505a RAID 5，\u53ef\u7528\u5bb9\u91cf = (N-1) \u5757\u3002\u6700\u5c11 3 \u5757\u76d8\u3002<\/p>\n

          4.4 RAID 6（\u6761\u5e26 + \u53cc\u6821\u9a8c，\u66f4\u6297\u9020）<\/h5>\n

          \u539f\u7406：\u5728 RAID 5 \u57fa\u7840\u4e0a\u7528\u53cc\u91cd\u5947\u5076\u6821\u9a8c，\u53ef\u540c\u65f6\u5bb9\u5fcd 2 \u5757\u76d8\u6545\u969c，\u5197\u4f59\u6027\u66f4\u5f3a\u3002<\/p>\n

          \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

            \n
          • \u9002\u7528\u573a\u666f：\u5927\u5bb9\u91cf\u5b58\u50a8\u3001\u9700\u8981\u957f\u671f\u8fd0\u884c\u7684\u5173\u952e\u5e94\u7528\u3001\u865a\u62df\u5316\u73af\u5883\u3002<\/li>\n
          • \u4f18\u70b9：\u66f4\u9ad8\u7ea7\u522b\u5197\u4f59（\u574f 2 \u5757\u76d8\u4e5f\u80fd\u6062\u590d）；\u6027\u80fd\u8f83\u597d\u3002<\/li>\n
          • \u7f3a\u70b9：\u5199\u6027\u80fd\u66f4\u4f4e（\u53cc\u91cd\u6821\u9a8c\u8ba1\u7b97）；\u6210\u672c\u66f4\u9ad8（\u6d6a\u8d39 2 \u5757\u76d8）\u3002<\/li>\n<\/ul>\n

            \u7a7a\u95f4\u516c\u5f0f：N \u5757\u76d8\u505a RAID 6，\u53ef\u7528\u5bb9\u91cf = (N-2) \u5757\u3002\u6700\u5c11 4 \u5757\u76d8\u3002<\/p>\n

            4.5 RAID 10（\u5148\u955c\u50cf\u518d\u6761\u5e26，\u6027\u80fd+\u5197\u4f59\u90fd\u8981）<\/h5>\n

            \u539f\u7406：RAID 0 + RAID 1 \u7684\u7ec4\u5408\u2014\u2014\u5148\u505a\u955c\u50cf（\u6bcf\u4efd\u6570\u636e\u590d\u5236\u4e24\u4efd），\u518d\u5bf9\u955c\u50cf\u7ec4\u505a\u6761\u5e26\u3002\u65e2\u6709\u6027\u80fd\u53c8\u6709\u5197\u4f59\u3002<\/p>\n

            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

              \n
            • \u9002\u7528\u573a\u666f：\u6570\u636e\u5e93\u3001\u865a\u62df\u5316\u3001\u5173\u952e\u4e1a\u52a1（\u91d1\u878d\u3001\u7535\u5546）\u3002<\/li>\n
            • \u4f18\u70b9：\u9ad8\u6027\u80fd；\u5197\u4f59\u5907\u4efd；\u53ef\u9760\u6027\u9ad8；\u6545\u969c\u6062\u590d\u5feb（\u76f4\u63a5\u4ece\u955c\u50cf\u76d8\u8bfb，\u65e0\u9700\u91cd\u7b97）\u3002<\/li>\n
            • \u7f3a\u70b9：\u6210\u672c\u9ad8（\u5bb9\u91cf\u53ea\u6709\u4e00\u534a）；\u7a7a\u95f4\u5229\u7528\u7387\u4f4e\u3002<\/li>\n<\/ul>\n

              \u4e00\u53e5\u8bdd：RAID 10 \u662f\u300c\u53c8\u7a33\u53c8\u5feb\u300d，\u4ee3\u4ef7\u662f\u4e00\u534a\u7a7a\u95f4\u505a\u955c\u50cf\u3002\u6ce8\u610f\u5b83\u548c\u300cRAID 01\u300d（\u5148\u6761\u5e26\u518d\u955c\u50cf）\u987a\u5e8f\u4e0d\u540c\u3001\u53ef\u9760\u6027\u4e5f\u4e0d\u540c，\u522b\u641e\u6df7\u3002<\/p>\n

              4.6 RAID 50 \/ RAID 60（\u591a\u7ec4\u518d\u6761\u5e26）<\/h5>\n

              \u539f\u7406：\u628a\u591a\u4e2a RAID 5（\u6216 RAID 6）\u7ec4\u518d\u901a\u8fc7 RAID 0 \u6761\u5e26\u5316\u7ec4\u5408，\u89c4\u6a21\u66f4\u5927\u3001\u6027\u80fd\u548c\u5197\u4f59\u66f4\u5f3a\u3002<\/p>\n

              \"\u5916\u94fe\u56fe\u7247\u8f6c\u5b58\u5931\u8d25,\u6e90\u7ad9\u53ef\u80fd\u6709\u9632\u76d7\u94fe\u673a\u5236,\u5efa\u8bae\u5c06\u56fe\u7247\u4fdd\u5b58\u4e0b\u6765\u76f4\u63a5\u4e0a\u4f20\"
              \n\"\u5916\u94fe\u56fe\u7247\u8f6c\u5b58\u5931\u8d25,\u6e90\u7ad9\u53ef\u80fd\u6709\u9632\u76d7\u94fe\u673a\u5236,\u5efa\u8bae\u5c06\u56fe\u7247\u4fdd\u5b58\u4e0b\u6765\u76f4\u63a5\u4e0a\u4f20\"<\/p>\n

                \n
              • \u9002\u7528\u573a\u666f：\u5927\u89c4\u6a21\u6570\u636e\u5b58\u50a8\u3001\u56fe\u5f62\u6e32\u67d3\u3001\u865a\u62df\u5316\u3001\u5927\u578b\u6570\u636e\u5e93\u3001\u5927\u6570\u636e\u5206\u6790\u3001\u89c6\u9891\u6d41\u5a92\u4f53\u3002<\/li>\n
              • \u4f18\u70b9：\u9ad8\u6027\u80fd + \u66f4\u9ad8\u7ea7\u522b\u5197\u4f59\u3002<\/li>\n
              • \u7f3a\u70b9：\u6210\u672c\u9ad8；\u914d\u7f6e\u7ba1\u7406\u590d\u6742\u3002<\/li>\n<\/ul>\n
                4.7 RAID \u7ea7\u522b\u603b\u7ed3\u8868<\/h5>\n\nRAID\u7ea7\u522b\u6700\u5c0f\u78c1\u76d8\u6570\u5bb9\u9519\u80fd\u529b\u78c1\u76d8\u7a7a\u95f4\u5f00\u9500\u8bfb\u53d6\u901f\u5ea6\u5199\u5165\u901f\u5ea6\u786c\u4ef6\u6210\u672c<\/tr>\n\n\n\n\n\n\n\n\n
                RAID 0<\/td>\n2<\/td>\n\u65e0<\/td>\n0%<\/td>\n\u9ad8<\/td>\n\u9ad8<\/td>\n\u4f4e<\/td>\n<\/tr>\n
                RAID 1<\/td>\n2<\/td>\n\u5355\u4e2a\u78c1\u76d8<\/td>\n50%<\/td>\n\u9ad8<\/td>\n\u4f4e<\/td>\n\u4e2d<\/td>\n<\/tr>\n
                RAID 5<\/td>\n3<\/td>\n\u5355\u4e2a\u78c1\u76d8<\/td>\n1 \/ N<\/td>\n\u4e2d<\/td>\n\u4f4e<\/td>\n\u4e2d<\/td>\n<\/tr>\n
                RAID 6<\/td>\n4<\/td>\n\u4e24\u4e2a\u78c1\u76d8<\/td>\n2 \/ N<\/td>\n\u4e2d<\/td>\n\u4f4e<\/td>\n\u9ad8<\/td>\n<\/tr>\n
                RAID 10<\/td>\n4<\/td>\n\u591a\u4e2a\u78c1\u76d8<\/td>\n50%<\/td>\n\u9ad8<\/td>\n\u4e2d<\/td>\n\u9ad8<\/td>\n<\/tr>\n
                RAID 50<\/td>\n6<\/td>\n\u591a\u4e2a\u78c1\u76d8<\/td>\n1 \/ N<\/td>\n\u9ad8<\/td>\n\u4e2d<\/td>\n\u9ad8<\/td>\n<\/tr>\n
                RAID 60<\/td>\n8<\/td>\n\u591a\u4e2a\u78c1\u76d8<\/td>\n50%<\/td>\n\u9ad8<\/td>\n\u4e2d<\/td>\n\u9ad8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                \u9009\u578b\u53e3\u8bc0：\u8981\u5feb\u4e0d\u8981\u547d\u2192RAID 0；\u8981\u7a33\u4e0d\u6015\u8d35\u2192RAID 1；\u53c8\u5feb\u53c8\u7a33\u8fd8\u7701\u76d8\u2192RAID 5；\u574f\u4e24\u5757\u4e5f\u4e0d\u6015\u2192RAID 6；\u6570\u636e\u5e93\u7b49\u5173\u952e\u4e1a\u52a1\u2192RAID 10\u3002<\/p>\n

                \n

                \u7b2c\u4e8c\u90e8\u5206：\u7528 mdadm \u7ba1\u7406\u8f6f RAID<\/h3>\n

                Linux \u63d0\u4f9b mdadm \u5de5\u5177\u6765\u521b\u5efa\u548c\u7ba1\u7406\u8f6f\u4ef6 RAID\u3002\u4e0b\u9762\u6309 RAID0 \u2192 RAID1 \u2192 RAID5 \u4f9d\u6b21\u5b8c\u6574\u8d70\u4e00\u904d\u300c\u521b\u5efa \u2192 \u67e5\u770b \u2192 \u683c\u5f0f\u5316\u6302\u8f7d \u2192 \u6545\u969c\u6f14\u7ec3 \u2192 \u5220\u9664\u300d\u3002<\/p>\n

                \u4e94\u3001\u7ba1\u7406 RAID 0<\/h4>\n

                5.1 \u521b\u5efa RAID 0<\/h5>\n

                # \u5b89\u88c5 mdadm<\/span>
                \n[<\/span>root@server ~ 16<\/span>:38:03]<\/span># yum install -y mdadm<\/span><\/p>\n

                # \u7528 2 \u5757\u76d8（sdb\u3001sdc）\u521b\u5efa raid0 \u8bbe\u5907 \/dev\/md0<\/span>
                \n[<\/span>root@server ~ 17<\/span>:53:51]<\/span># mdadm –create \/dev\/md0 –level=0 –raid-devices 2 \/dev\/sd{b,c}<\/span>
                \nmdadm: Defaulting to version 1.2<\/span> metadata
                \nmdadm: array \/dev\/md0 started.<\/p>\n

                # \u9a8c\u8bc1：sdb\u3001sdc \u6302\u5230\u4e86 md0 \u4e0b<\/span>
                \n[<\/span>root@server ~ 17<\/span>:55:09]<\/span># lsblk | grep -B1 md0<\/span>
                \nsdb 8<\/span>:16 0<\/span> 20G 0<\/span> disk
                \n\u2514\u2500md0 9<\/span>:0 0<\/span> 40G 0<\/span> raid0
                \nsdc 8<\/span>:32 0<\/span> 20G 0<\/span> disk
                \n\u2514\u2500md0 9<\/span>:0 0<\/span> 40G 0<\/span> raid0<\/p>\n

                lsblk | grep -B1 md0 \u91cc -B1 \u8868\u793a\u300c\u663e\u793a\u5339\u914d\u884c\u4ee5\u53ca\u5b83\u7684\u524d\u4e00\u884c\u300d（\u80fd\u770b\u5230 md0 \u4e0a\u9762\u6302\u7684\u662f\u54ea\u5757\u76d8）\u3002\u53ef\u4ee5\u770b\u5230 2\u00d720G = 40G \u7684 raid0 \u8bbe\u5907 \/dev\/md0 \u51fa\u73b0\u4e86\u3002<\/p>\n

                –create \u7684\u53c2\u6570：–level=0 \u6307\u5b9a\u7ea7\u522b\u3001–raid-devices 2 \u6307\u5b9a\u6210\u5458\u76d8\u6570\u91cf\u3001\/dev\/sd{b,c} \u662f\u6307\u5b9a\u7684\u6210\u5458\u76d8\u3002<\/p>\n

                5.2 \u67e5\u770b RAID<\/h5>\n

                # \u67e5\u770b raid \u6982\u8981\u4fe1\u606f（\u6700\u5e38\u7528）<\/span>
                \n[<\/span>root@server ~ 17<\/span>:55:32]<\/span># cat \/proc\/mdstat<\/span>
                \nPersonalities :<\/span> [<\/span>raid6]<\/span> [<\/span>raid5]<\/span> [<\/span>raid4]<\/span> [<\/span>raid0]<\/span>
                \nmd0 :<\/span> active raid0 sdc[<\/span>1<\/span>]<\/span> sdb[<\/span>0<\/span>]<\/span>
                \n 41908224<\/span> blocks super 1.2<\/span> 512k chunks<\/p>\n

                unused devices: <<\/span>none><\/span><\/p>\n

                # \u67e5\u770b raid \u8bbe\u5907\u8be6\u7ec6\u4fe1\u606f<\/span>
                \n[<\/span>root@server ~ 17<\/span>:57:10]<\/span># mdadm –detail \/dev\/md0<\/span>
                \n\/dev\/md0:
                \n Version :<\/span> 1.2<\/span>
                \n Creation Time :<\/span> Tue Sep 22<\/span> 17<\/span>:54:45 2026<\/span>
                \n Raid Level :<\/span> raid0
                \n Array Size :<\/span> 41908224<\/span> (<\/span>39.97<\/span> GiB 42.91<\/span> GB)<\/span>
                \n Raid Devices :<\/span> 2<\/span>
                \n Total Devices :<\/span> 2<\/span>
                \n Persistence :<\/span> Superblock is persistent<\/p>\n

                Update Time :<\/span> Tue Sep 22<\/span> 17<\/span>:54:45 2026<\/span>
                \n State :<\/span> clean
                \n Active Devices :<\/span> 2<\/span>
                \n Working Devices :<\/span> 2<\/span>
                \n Failed Devices :<\/span> 0<\/span>
                \n Spare Devices :<\/span> 0<\/span><\/p>\n

                Chunk Size :<\/span> 512K<\/p>\n

                Consistency Policy :<\/span> none<\/p>\n

                Name :<\/span> server.feiyun.cloud:0 (<\/span>local to host<\/span> server.feiyun.cloud)<\/span>
                \n UUID :<\/span> d585cb36:75172246:fde512c2:1ad283ac
                \n Events :<\/span> 0<\/span><\/p>\n

                Number Major Minor RaidDevice State
                \n 0<\/span> 8<\/span> 16<\/span> 0<\/span> active sync<\/span> \/dev\/sdb
                \n 1<\/span> 8<\/span> 32<\/span> 1<\/span> active sync<\/span> \/dev\/sdc<\/p>\n

                mdadm –detail \/dev\/md0 \u7b49\u4ef7\u4e8e mdadm -D \/dev\/md0\u3002\u9700\u8981\u5173\u6ce8\u7684\u5c5e\u6027：<\/p>\n

                  \n
                • Raid Level: raid0：\u7ea7\u522b；<\/li>\n
                • State: clean：\u72b6\u6001\u6b63\u5e38；<\/li>\n
                • Chunk Size: 512K：\u6761\u5e26\u5757\u5927\u5c0f；<\/li>\n
                • \u5e95\u90e8\u8bbe\u5907\u6e05\u5355：\u54ea\u4e9b\u76d8\u53c2\u4e0e\u3001\u5404\u81ea\u72b6\u6001（active sync）\u3002<\/li>\n<\/ul>\n
                  5.3 \u683c\u5f0f\u5316\u548c\u6302\u8f7d<\/h5>\n

                  # \u683c\u5f0f\u5316（\u63d0\u793a\u5df2\u6709\u6587\u4ef6\u7cfb\u7edf\u65f6，\u52a0 -f \u5f3a\u5236）<\/span>
                  \n[<\/span>root@server ~ 17<\/span>:57:24]<\/span># mkfs.xfs \/dev\/md0<\/span>
                  \nmkfs.xfs: \/dev\/md0 appears to contain an existing filesystem (<\/span>xfs)<\/span>.
                  \nmkfs.xfs: Use the -f<\/span> option to force overwrite.
                  \n[<\/span>root@server ~ 17<\/span>:59:06]<\/span># mkfs.xfs -f \/dev\/md0<\/span>
                  \nmeta-data=<\/span>\/dev\/md0 isize<\/span>=<\/span>512<\/span> agcount<\/span>=<\/span>16<\/span>, agsize<\/span>=<\/span>654720<\/span> blks
                  \n =<\/span> sectsz<\/span>=<\/span>512<\/span> attr<\/span>=<\/span>2<\/span>, projid32bit<\/span>=<\/span>1<\/span>
                  \n =<\/span> crc<\/span>=<\/span>1<\/span> finobt<\/span>=<\/span>0<\/span>, sparse<\/span>=<\/span>0<\/span>
                  \ndata =<\/span> bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>10475520<\/span>, imaxpct<\/span>=<\/span>25<\/span>
                  \n =<\/span> sunit<\/span>=<\/span>128<\/span> swidth<\/span>=<\/span>256<\/span> blks
                  \nnaming =<\/span>version 2<\/span> bsize<\/span>=<\/span>4096<\/span> ascii-ci=<\/span>0<\/span> ftype<\/span>=<\/span>1<\/span>
                  \nlog =<\/span>internal log bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>5120<\/span>, version<\/span>=<\/span>2<\/span>
                  \n =<\/span> sectsz<\/span>=<\/span>512<\/span> sunit<\/span>=<\/span>8<\/span> blks, lazy-count=<\/span>1<\/span>
                  \nrealtime =<\/span>none extsz<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>0<\/span>, rtextents<\/span>=<\/span>0<\/span><\/p>\n

                  # \u5efa\u6302\u8f7d\u70b9\u5e76\u6302\u8f7d<\/span>
                  \n[<\/span>root@server ~ 17<\/span>:59:13]<\/span># mkdir -p \/raid\/raid0<\/span>
                  \n[<\/span>root@server ~ 17<\/span>:59:26]<\/span># mount \/dev\/md0 \/raid\/raid0<\/span>
                  \n[<\/span>root@server ~ 17<\/span>:59:41]<\/span># df -h \/raid\/raid0<\/span>
                  \n\u6587\u4ef6\u7cfb\u7edf \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9
                  \n\/dev\/md0 40G 33M 40G 1<\/span>% \/raid\/raid0<\/p>\n

                  RAID \u8bbe\u5907\u548c\u666e\u901a\u78c1\u76d8\u5206\u533a\u4e00\u6837，\u683c\u5f0f\u5316（mkfs.xfs）\u2192 \u6302\u8f7d（mount）\u2192 \u4f7f\u7528，\u6d41\u7a0b\u5b8c\u5168\u4e00\u81f4\u3002<\/p>\n

                  5.4 \u5220\u9664 RAID<\/h5>\n

                  # 1. \u5148\u5378\u8f7d<\/span>
                  \n[<\/span>root@server ~ 17<\/span>:59:50]<\/span># umount \/raid\/raid0<\/span>
                  \n# 2. \u505c\u6b62\u9635\u5217<\/span>
                  \n[<\/span>root@server ~ 18<\/span>:01:04]<\/span># mdadm –stop \/dev\/md0<\/span>
                  \nmdadm: stopped \/dev\/md0
                  \n# 3. \u6e05\u9664\u6bcf\u5757\u76d8\u4e0a\u7684 superblock（RAID \u5143\u6570\u636e）<\/span>
                  \n[<\/span>root@server ~ 18<\/span>:01:21]<\/span># mdadm –zero-superblock \/dev\/sd{b,c}<\/span><\/p>\n

                  \u5220\u9664 RAID \u4e09\u6b65：umount \u2192 mdadm –stop \u2192 zero-superblock\u3002\u6700\u540e\u4e00\u6b65\u6e05\u6389\u6210\u5458\u76d8\u4e0a\u7684\u5143\u6570\u636e，\u5426\u5219\u91cd\u65b0\u505a RAID \u65f6\u53ef\u80fd\u62a5\u300c\u76d8\u5df2\u88ab\u5360\u7528\u300d\u3002\u5f53\u7136\u7528 wipefs \u4e5f\u80fd\u6e05\u3002<\/p>\n

                  5.5 \u8865\u5145\u8bf4\u660e（RAID 0 \u7684\u9650\u5236）<\/h5>\n
                    \n
                  • RAID 0 \u6761\u5e26\u4e0d\u80fd\u589e\u52a0\u65b0\u6210\u5458\u76d8：<\/li>\n<\/ul>\n

                    [<\/span>root@server ~ 18<\/span>:01:52]<\/span># mdadm –add \/dev\/md0 \/dev\/sdd<\/span>
                    \nmdadm: add<\/span> new device failed for<\/span> \/dev\/sdd as 2<\/span>: Invalid argument<\/p>\n

                      \n
                    • RAID 0 \u6761\u5e26\u4e0d\u80fd\u5f3a\u5236\u6545\u969c\u6210\u5458\u76d8（\u56e0\u4e3a\u5b83\u6ca1\u6709\u5197\u4f59，\u4efb\u4f55\u4e00\u5757\u76d8\u635f\u574f\u6574\u4e2a\u9635\u5217\u5c31\u5e9f\u4e86）：<\/li>\n<\/ul>\n

                      [<\/span>root@server ~ 18<\/span>:03:47]<\/span># mdadm –fail \/dev\/md0 \/dev\/sdc<\/span>
                      \nmdadm: Cannot remove \/dev\/sdc from \/dev\/md0, array will be failed.<\/p>\n

                      \u516d\u3001\u7ba1\u7406 RAID 1<\/h4>\n

                      6.1 \u521b\u5efa RAID 1<\/h5>\n

                      [<\/span>root@server ~ 18<\/span>:06:04]<\/span># mdadm –create \/dev\/md1 –level=1 –raid-devices 2 \/dev\/sd{b,c}<\/span>
                      \nmdadm: Note: this array has metadata at the start and
                      \n may not be suitable as a boot device. If you plan to
                      \n store '\/boot'<\/span> on this device please ensure that
                      \n your boot-loader understands md\/v1.x metadata, or use
                      \n –metadata<\/span>=<\/span>0.90<\/span>
                      \nContinue creating array? yes<\/span>
                      \nmdadm: Defaulting to version 1.2<\/span> metadata
                      \nmdadm: array \/dev\/md1 started.<\/p>\n

                      # \u9a8c\u8bc1：2\u00d720G \u7684 raid1，\u5bb9\u91cf\u8fd8\u662f 20G（\u955c\u50cf）<\/span>
                      \n[<\/span>root@server ~ 18<\/span>:07:30]<\/span># lsblk | grep -B1 md1<\/span>
                      \nsdb 8<\/span>:16 0<\/span> 20G 0<\/span> disk
                      \n\u2514\u2500md1 9<\/span>:1 0<\/span> 20G 0<\/span> raid1
                      \nsdc 8<\/span>:32 0<\/span> 20G 0<\/span> disk
                      \n\u2514\u2500md1 9<\/span>:1 0<\/span> 20G 0<\/span> raid1<\/p>\n

                      \u6ce8\u610f：2 \u5757 20G \u76d8\u505a RAID 1，\/dev\/md1 \u5bb9\u91cf\u4ecd\u662f 20G（\u4e00\u534a\u505a\u955c\u50cf），\u5370\u8bc1\u4e86\u300cRAID 1 \u5bb9\u91cf\u51cf\u534a\u300d\u3002<\/p>\n

                      6.2 \u67e5\u770b RAID<\/h5>\n

                      [<\/span>root@server ~ 18<\/span>:06:50]<\/span># mdadm -D \/dev\/md1<\/span>
                      \n\/dev\/md1:
                      \n Version :<\/span> 1.2<\/span>
                      \n Creation Time :<\/span> Tue Sep 22<\/span> 18<\/span>:06:50 2026<\/span>
                      \n Raid Level :<\/span> raid1
                      \n Array Size :<\/span> 20954112<\/span> (<\/span>19.98<\/span> GiB 21.46<\/span> GB)<\/span>
                      \n Used Dev Size :<\/span> 20954112<\/span> (<\/span>19.98<\/span> GiB 21.46<\/span> GB)<\/span>
                      \n Raid Devices :<\/span> 2<\/span>
                      \n Total Devices :<\/span> 2<\/span>
                      \n Persistence :<\/span> Superblock is persistent<\/p>\n

                      Update Time :<\/span> Tue Sep 22<\/span> 18<\/span>:07:23 2026<\/span>
                      \n State :<\/span> clean, resyncing
                      \n Active Devices :<\/span> 2<\/span>
                      \n Working Devices :<\/span> 2<\/span>
                      \n Failed Devices :<\/span> 0<\/span>
                      \n Spare Devices :<\/span> 0<\/span><\/p>\n

                      Consistency Policy :<\/span> resync<\/p>\n

                      Resync Status :<\/span> 37<\/span>% complete<\/p>\n

                      Name :<\/span> server.feiyun.cloud:1 (<\/span>local to host<\/span> server.feiyun.cloud)<\/span>
                      \n UUID :<\/span> 63cbbfed:b28b6524:a0d2f936:a14090d9
                      \n Events :<\/span> 5<\/span><\/p>\n

                      Number Major Minor RaidDevice State
                      \n 0<\/span> 8<\/span> 16<\/span> 0<\/span> active sync<\/span> \/dev\/sdb
                      \n 1<\/span> 8<\/span> 32<\/span> 1<\/span> active sync<\/span> \/dev\/sdc<\/p>\n

                      \u9700\u8981\u5173\u6ce8\u7684\u5c5e\u6027：<\/p>\n

                        \n
                      • Raid Level: raid1；<\/li>\n
                      • State: clean, resyncing：\u6b63\u5728\u540c\u6b65（RAID 1 \u5efa\u597d\u540e\u8981\u628a\u4e00\u5757\u76d8\u7684\u6570\u636e\u540c\u6b65\u5230\u53e6\u4e00\u5757）；<\/li>\n
                      • Consistency Policy: resync：\u540c\u6b65\u7b56\u7565；<\/li>\n
                      • Resync Status: 37% complete：\u540c\u6b65\u8fdb\u5ea6；<\/li>\n
                      • \u8bbe\u5907\u6e05\u5355\u3002<\/li>\n<\/ul>\n
                        6.3 \u683c\u5f0f\u5316\u548c\u6302\u8f7d<\/h5>\n

                        \u5148\u7b49\u540c\u6b65\u5b8c\u6210（\u8fdb\u5ea6\u5230 100%）\u518d\u683c\u5f0f\u5316\u6302\u8f7d：<\/p>\n

                        [<\/span>root@server ~ 18<\/span>:10:46]<\/span># mkfs.xfs \/dev\/md1<\/span>
                        \nmkfs.xfs: \/dev\/md1 appears to contain an existing filesystem (<\/span>xfs)<\/span>.
                        \nmkfs.xfs: Use the -f<\/span> option to force overwrite.
                        \n[<\/span>root@server ~ 18<\/span>:11:06]<\/span># mkfs.xfs -f \/dev\/md1<\/span>
                        \nmeta-data=<\/span>\/dev\/md1 isize<\/span>=<\/span>512<\/span> agcount<\/span>=<\/span>4<\/span>, agsize<\/span>=<\/span>1309632<\/span> blks
                        \n =<\/span> sectsz<\/span>=<\/span>512<\/span> attr<\/span>=<\/span>2<\/span>, projid32bit<\/span>=<\/span>1<\/span>
                        \n =<\/span> crc<\/span>=<\/span>1<\/span> finobt<\/span>=<\/span>0<\/span>, sparse<\/span>=<\/span>0<\/span>
                        \ndata =<\/span> bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>5238528<\/span>, imaxpct<\/span>=<\/span>25<\/span>
                        \n =<\/span> sunit<\/span>=<\/span>0<\/span> swidth<\/span>=<\/span>0<\/span> blks
                        \nnaming =<\/span>version 2<\/span> bsize<\/span>=<\/span>4096<\/span> ascii-ci=<\/span>0<\/span> ftype<\/span>=<\/span>1<\/span>
                        \nlog =<\/span>internal log bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>2560<\/span>, version<\/span>=<\/span>2<\/span>
                        \n =<\/span> sectsz<\/span>=<\/span>512<\/span> sunit<\/span>=<\/span>0<\/span> blks, lazy-count=<\/span>1<\/span>
                        \nrealtime =<\/span>none extsz<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>0<\/span>, rtextents<\/span>=<\/span>0<\/span><\/p>\n

                        [<\/span>root@server ~ 18<\/span>:11:13]<\/span># mkdir \/raid\/raid1<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:11:27]<\/span># mount \/dev\/md1 \/raid\/raid1<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:11:53]<\/span># df -h \/raid\/raid1<\/span>
                        \n\u6587\u4ef6\u7cfb\u7edf \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9
                        \n\/dev\/md1 20G 33M 20G 1<\/span>% \/raid\/raid1<\/p>\n

                        # \u521b\u5efa\u6d4b\u8bd5\u6570\u636e<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:12:00]<\/span># cp \/etc\/ho* \/raid\/raid1<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:12:37]<\/span># ls \/raid\/raid1<\/span>
                        \nhost.conf hostname<\/span> hosts hosts.allow hosts.deny<\/p>\n

                        6.4 \u589e\u52a0\u70ed\u5907\u76d8<\/h5>\n

                        # \u628a sdd \u52a0\u8fdb\u6765\u505a\u70ed\u5907\u76d8<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:12:40]<\/span># mdadm –add \/dev\/md1 \/dev\/sdd<\/span>
                        \nmdadm: added \/dev\/sdd<\/p>\n

                        [<\/span>root@server ~ 18<\/span>:13:16]<\/span># mdadm -D \/dev\/md1 | tail -5<\/span>
                        \n Number Major Minor RaidDevice State
                        \n 0<\/span> 8<\/span> 16<\/span> 0<\/span> active sync<\/span> \/dev\/sdb
                        \n 1<\/span> 8<\/span> 32<\/span> 1<\/span> active sync<\/span> \/dev\/sdc<\/p>\n

                        2<\/span> 8<\/span> 48<\/span> – spare \/dev\/sdd<\/p>\n

                        \u70ed\u5907\u76d8（spare）：\u5e73\u65f6\u4e0d\u5b58\u6570\u636e\u3001\u6302\u5728\u90a3\u5f85\u547d，\u4e00\u65e6\u67d0\u5757\u76d8\u6545\u969c\u5c31\u81ea\u52a8\u9876\u66ff\u3002\u8fd9\u662f RAID \u9ad8\u53ef\u7528\u7684\u5173\u952e\u4e00\u73af\u3002<\/p>\n

                        6.5 \u6a21\u62df\u6545\u969c（\u9a8c\u8bc1\u70ed\u5907\u9876\u66ff）<\/h5>\n

                        # \u624b\u52a8\u628a sdc \u6807\u8bb0\u4e3a\u6545\u969c<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:13:37]<\/span># mdadm –fail \/dev\/md1 \/dev\/sdc<\/span>
                        \nmdadm: set<\/span> \/dev\/sdc faulty in<\/span> \/dev\/md1<\/p>\n

                        [<\/span>root@server ~ 18<\/span>:14:30]<\/span># mdadm -D \/dev\/md1 | tail -5<\/span>
                        \n Number Major Minor RaidDevice State
                        \n 0<\/span> 8<\/span> 16<\/span> 0<\/span> active sync<\/span> \/dev\/sdb
                        \n 2<\/span> 8<\/span> 48<\/span> 1<\/span> spare rebuilding \/dev\/sdd<\/p>\n

                        1<\/span> 8<\/span> 32<\/span> – faulty \/dev\/sdc<\/p>\n

                        \u70ed\u5907\u76d8 \/dev\/sdd \u7acb\u523b\u9876\u66ff\u6545\u969c\u7684 sdc，\u5e76\u5f00\u59cb rebuilding（\u91cd\u5efa\u540c\u6b65）\u3002\u8fd9\u662f RAID 1 \u7684\u5bb9\u9519\u4ef7\u503c\u6240\u5728\u3002<\/p>\n

                        # \u6570\u636e\u4f9d\u7136\u5b8c\u597d\u53ef\u8bbf\u95ee<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:14:36]<\/span># ls \/raid\/raid1<\/span>
                        \nhost.conf hostname<\/span> hosts hosts.allow hosts.deny<\/p>\n

                        6.6 \u5220\u9664\u6545\u969c\u78c1\u76d8<\/h5>\n

                        # \u628a\u6545\u969c\u76d8 sdc \u79fb\u51fa\u9635\u5217<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:15:45]<\/span># mdadm –remove \/dev\/md1 \/dev\/sdc<\/span>
                        \nmdadm: hot removed \/dev\/sdc from \/dev\/md1<\/p>\n

                        [<\/span>root@server ~ 18<\/span>:17:03]<\/span># mdadm -D \/dev\/md1 | tail -5<\/span>
                        \n Events :<\/span> 40<\/span><\/p>\n

                        Number Major Minor RaidDevice State
                        \n 0<\/span> 8<\/span> 16<\/span> 0<\/span> active sync<\/span> \/dev\/sdb
                        \n 2<\/span> 8<\/span> 48<\/span> 1<\/span> active sync<\/span> \/dev\/sdd<\/p>\n

                        \u79fb\u51fa\u6545\u969c\u76d8\u540e，\u9635\u5217\u6062\u590d\u6b63\u5e38（sdb + sdd \u4e24\u5757 active）\u3002<\/p>\n

                        6.7 \u5220\u9664 RAID<\/h5>\n

                        [<\/span>root@server ~ 18<\/span>:17:11]<\/span># umount \/dev\/md1<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:23:00]<\/span># mdadm –stop \/dev\/md1<\/span>
                        \nmdadm: stopped \/dev\/md1
                        \n[<\/span>root@server ~ 18<\/span>:23:12]<\/span># mdadm –zero-superblock \/dev\/sd{b..d}<\/span><\/p>\n

                        6.8 \u8865\u5145\u8bf4\u660e<\/h5>\n

                        RAID 1 \u7684\u8bbe\u8ba1\u521d\u8877\u662f\u6570\u636e\u5197\u4f59\u548c\u53ef\u9760\u6027，\u800c\u4e0d\u662f\u589e\u52a0\u5bb9\u91cf\u3002\u56e0\u6b64\u5373\u4f7f\u6dfb\u52a0\u65b0\u786c\u76d8\u505a\u6269\u5bb9，\u7531\u4e8e\u955c\u50cf\u673a\u5236，\u603b\u5bb9\u91cf\u4e5f\u4e0d\u4f1a\u589e\u52a0\u3002<\/p>\n

                        \u4e03\u3001\u7ba1\u7406 RAID 5<\/h4>\n

                        7.1 \u521b\u5efa RAID 5<\/h5>\n

                        # 4 \u5757\u76d8\u505a raid5，\u5f97 60G \u53ef\u7528（4-1）\u00d720G<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:24:31]<\/span># mdadm –create \/dev\/md5 –level=5 –raid-devices=4 \/dev\/sd{b..e}<\/span>
                        \nmdadm: Defaulting to version 1.2<\/span> metadata
                        \nmdadm: array \/dev\/md5 started.<\/p>\n

                        # \u9a8c\u8bc1<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:25:23]<\/span># lsblk | grep -B1 md5<\/span>
                        \nsdb 8<\/span>:16 0<\/span> 20G 0<\/span> disk
                        \n\u2514\u2500md5 9<\/span>:5 0<\/span> 60G 0<\/span> raid5
                        \nsdc 8<\/span>:32 0<\/span> 20G 0<\/span> disk
                        \n\u2514\u2500md5 9<\/span>:5 0<\/span> 60G 0<\/span> raid5
                        \nsdd 8<\/span>:48 0<\/span> 20G 0<\/span> disk
                        \n\u2514\u2500md5 9<\/span>:5 0<\/span> 60G 0<\/span> raid5
                        \nsde 8<\/span>:64 0<\/span> 20G 0<\/span> disk
                        \n\u2514\u2500md5 9<\/span>:5 0<\/span> 60G 0<\/span> raid5<\/p>\n

                        7.2 \u67e5\u770b RAID<\/h5>\n

                        [<\/span>root@server ~ 18<\/span>:25:53]<\/span># mdadm -D \/dev\/md5<\/span>
                        \n\/dev\/md5:
                        \n Version :<\/span> 1.2<\/span>
                        \n Creation Time :<\/span> Tue Sep 22<\/span> 18<\/span>:25:23 2026<\/span>
                        \n Raid Level :<\/span> raid5
                        \n Array Size :<\/span> 62862336<\/span> (<\/span>59.95<\/span> GiB 64.37<\/span> GB)<\/span>
                        \n Used Dev Size :<\/span> 20954112<\/span> (<\/span>19.98<\/span> GiB 21.46<\/span> GB)<\/span>
                        \n Raid Devices :<\/span> 4<\/span>
                        \n Total Devices :<\/span> 4<\/span>
                        \n Persistence :<\/span> Superblock is persistent<\/p>\n

                        Update Time :<\/span> Tue Sep 22<\/span> 18<\/span>:26:48 2026<\/span>
                        \n State :<\/span> clean, degraded, recovering
                        \n Active Devices :<\/span> 3<\/span>
                        \n Working Devices :<\/span> 4<\/span>
                        \n Failed Devices :<\/span> 0<\/span>
                        \n Spare Devices :<\/span> 1<\/span><\/p>\n

                        Layout :<\/span> left-symmetric
                        \n Chunk Size :<\/span> 512K<\/p>\n

                        Consistency Policy :<\/span> resync<\/p>\n

                        Rebuild Status :<\/span> 83<\/span>% complete<\/p>\n

                        Name :<\/span> server.feiyun.cloud:5 (<\/span>local to host<\/span> server.feiyun.cloud)<\/span>
                        \n UUID :<\/span> 8103634a:422d3fec:734dff40:2579d5eb
                        \n Events :<\/span> 14<\/span><\/p>\n

                        Number Major Minor RaidDevice State
                        \n 0<\/span> 8<\/span> 16<\/span> 0<\/span> active sync<\/span> \/dev\/sdb
                        \n 1<\/span> 8<\/span> 32<\/span> 1<\/span> active sync<\/span> \/dev\/sdc
                        \n 2<\/span> 8<\/span> 48<\/span> 2<\/span> active sync<\/span> \/dev\/sdd
                        \n 4<\/span> 8<\/span> 64<\/span> 3<\/span> spare rebuilding \/dev\/sde<\/p>\n

                        \u9700\u5173\u6ce8：State: clean, degraded, recovering（\u6784\u5efa\u4e2d）\u3001Rebuild Status: 83% complete（\u6784\u5efa\u8fdb\u5ea6）\u3002RAID 5 \u521a\u5efa\u597d\u65f6\u4e5f\u5728\u505a\u5947\u5076\u6821\u9a8c\u7684\u521d\u59cb\u5316\u6784\u5efa\u3002<\/p>\n

                        7.3 \u683c\u5f0f\u5316\u548c\u6302\u8f7d<\/h5>\n

                        \u6ce8\u610f：\u7b49\u5f85 raid \u6784\u5efa\u5b8c\u6210\u540e\u518d\u683c\u5f0f\u5316\u3002<\/p>\n

                        [<\/span>root@server ~ 18<\/span>:28:13]<\/span># mkfs.xfs -f \/dev\/md5<\/span>
                        \nmeta-data=<\/span>\/dev\/md5 isize<\/span>=<\/span>512<\/span> agcount<\/span>=<\/span>16<\/span>, agsize<\/span>=<\/span>982144<\/span> blks
                        \n =<\/span> sectsz<\/span>=<\/span>512<\/span> attr<\/span>=<\/span>2<\/span>, projid32bit<\/span>=<\/span>1<\/span>
                        \n =<\/span> crc<\/span>=<\/span>1<\/span> finobt<\/span>=<\/span>0<\/span>, sparse<\/span>=<\/span>0<\/span>
                        \ndata =<\/span> bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>15714304<\/span>, imaxpct<\/span>=<\/span>25<\/span>
                        \n =<\/span> sunit<\/span>=<\/span>128<\/span> swidth<\/span>=<\/span>384<\/span> blks
                        \nnaming =<\/span>version 2<\/span> bsize<\/span>=<\/span>4096<\/span> ascii-ci=<\/span>0<\/span> ftype<\/span>=<\/span>1<\/span>
                        \nlog =<\/span>internal log bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>7680<\/span>, version<\/span>=<\/span>2<\/span>
                        \n =<\/span> sectsz<\/span>=<\/span>512<\/span> sunit<\/span>=<\/span>8<\/span> blks, lazy-count=<\/span>1<\/span>
                        \nrealtime =<\/span>none extsz<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>0<\/span>, rtextents<\/span>=<\/span>0<\/span><\/p>\n

                        [<\/span>root@server ~ 18<\/span>:28:41]<\/span># mount \/dev\/md5 \/raid\/raid5<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:28:55]<\/span># df -h \/raid\/raid5<\/span>
                        \n\u6587\u4ef6\u7cfb\u7edf \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9
                        \n\/dev\/md5 60G 33M 60G 1<\/span>% \/raid\/raid5<\/p>\n

                        # \u521b\u5efa\u6570\u636e<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:29:04]<\/span># cp \/etc\/ho* \/raid\/raid5<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:29:48]<\/span># ls \/raid\/raid5<\/span>
                        \nhost.conf hostname<\/span> hosts hosts.allow hosts.deny<\/p>\n

                        7.4 \u589e\u52a0\u70ed\u5907\u76d8<\/h5>\n

                        [<\/span>root@server ~ 18<\/span>:29:54]<\/span># mdadm –add \/dev\/md5 \/dev\/sdf<\/span>
                        \nmdadm: added \/dev\/sdf<\/p>\n

                        [<\/span>root@server ~ 18<\/span>:30:28]<\/span># mdadm –detail \/dev\/md5 | tail -7<\/span>
                        \n Number Major Minor RaidDevice State
                        \n 0<\/span> 8<\/span> 16<\/span> 0<\/span> active sync<\/span> \/dev\/sdb
                        \n 1<\/span> 8<\/span> 32<\/span> 1<\/span> active sync<\/span> \/dev\/sdc
                        \n 2<\/span> 8<\/span> 48<\/span> 2<\/span> active sync<\/span> \/dev\/sdd
                        \n 4<\/span> 8<\/span> 64<\/span> 3<\/span> active sync<\/span> \/dev\/sde<\/p>\n

                        5<\/span> 8<\/span> 80<\/span> – spare \/dev\/sdf<\/p>\n

                        7.5 \u6a21\u62df\u6545\u969c<\/h5>\n

                        # \u6545\u969c sdb<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:30:49]<\/span># mdadm –fail \/dev\/md5 \/dev\/sdb<\/span>
                        \nmdadm: set<\/span> \/dev\/sdb faulty in<\/span> \/dev\/md5<\/p>\n

                        [<\/span>root@server ~ 18<\/span>:31:37]<\/span># mdadm –detail \/dev\/md5 | tail -7<\/span>
                        \n Number Major Minor RaidDevice State
                        \n 5<\/span> 8<\/span> 80<\/span> 0<\/span> spare rebuilding \/dev\/sdf
                        \n 1<\/span> 8<\/span> 32<\/span> 1<\/span> active sync<\/span> \/dev\/sdc
                        \n 2<\/span> 8<\/span> 48<\/span> 2<\/span> active sync<\/span> \/dev\/sdd
                        \n 4<\/span> 8<\/span> 64<\/span> 3<\/span> active sync<\/span> \/dev\/sde<\/p>\n

                        0<\/span> 8<\/span> 16<\/span> – faulty \/dev\/sdb<\/p>\n

                        \u70ed\u5907\u76d8 \/dev\/sdf \u7acb\u523b\u9876\u66ff\u6545\u969c\u76d8，\u5e76\u91cd\u5efa\u540c\u6b65\u3002<\/p>\n

                        # \u6570\u636e\u4f9d\u7136\u6b63\u5e38\u8bbf\u95ee<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:31:40]<\/span># ls \/raid\/raid5<\/span>
                        \nhost.conf hostname<\/span> hosts hosts.allow hosts.deny<\/p>\n

                        7.6 \u5220\u9664\u6545\u969c\u78c1\u76d8<\/h5>\n

                        [<\/span>root@server ~ 18<\/span>:32:17]<\/span># mdadm –remove \/dev\/md5 \/dev\/sdb<\/span>
                        \nmdadm: hot removed \/dev\/sdb from \/dev\/md5<\/p>\n

                        [<\/span>root@server ~ 18<\/span>:33:11]<\/span># mdadm –detail \/dev\/md5 | tail -5<\/span>
                        \n Number Major Minor RaidDevice State
                        \n 5<\/span> 8<\/span> 80<\/span> 0<\/span> active sync<\/span> \/dev\/sdf
                        \n 1<\/span> 8<\/span> 32<\/span> 1<\/span> active sync<\/span> \/dev\/sdc
                        \n 2<\/span> 8<\/span> 48<\/span> 2<\/span> active sync<\/span> \/dev\/sdd
                        \n 4<\/span> 8<\/span> 64<\/span> 3<\/span> active sync<\/span> \/dev\/sde<\/p>\n

                        7.7 \u6269\u5bb9 RAID<\/h5>\n

                        \u5bf9\u4e8e RAID 5，\u53ea\u80fd\u6269\u5bb9，\u4e0d\u80fd\u51cf\u5bb9\u3002<\/p>\n

                        \u6ce8\u610f：\u9635\u5217\u53ea\u6709\u5728\u6b63\u5e38\u72b6\u6001\u4e0b\u624d\u80fd\u6269\u5bb9，\u964d\u7ea7（degraded）\u548c\u91cd\u6784（rebuilding）\u65f6\u4e0d\u5141\u8bb8\u6269\u5bb9\u3002<\/p>\n

                        # \u5148\u770b\u5f53\u524d\u72b6\u6001（sdb\u3001sdg \u53c8\u4f5c\u4e3a spare \u52a0\u56de\u6765\u4e86）<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:34:26]<\/span># mdadm –detail \/dev\/md5 | tail -8<\/span>
                        \n Number Major Minor RaidDevice State
                        \n 5<\/span> 8<\/span> 80<\/span> 0<\/span> active sync<\/span> \/dev\/sdf
                        \n 1<\/span> 8<\/span> 32<\/span> 1<\/span> active sync<\/span> \/dev\/sdc
                        \n 2<\/span> 8<\/span> 48<\/span> 2<\/span> active sync<\/span> \/dev\/sdd
                        \n 4<\/span> 8<\/span> 64<\/span> 3<\/span> active sync<\/span> \/dev\/sde<\/p>\n

                        6<\/span> 8<\/span> 16<\/span> – spare \/dev\/sdb
                        \n 7<\/span> 8<\/span> 96<\/span> – spare \/dev\/sdg<\/p>\n

                        # -G \u8868\u793a grow（\u6269\u5c55），\u628a\u6210\u5458\u76d8\u6570\u4ece 4 \u6269\u5230 5<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:34:41]<\/span># mdadm –grow \/dev\/md5 –raid-devices 5<\/span><\/p>\n

                        # \u7b49\u5f85\u91cd\u7ec4（reshaping）\u5b8c\u6210<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:35:17]<\/span># mdadm –detail \/dev\/md5<\/span>
                        \n\/dev\/md5:
                        \n Version :<\/span> 1.2<\/span>
                        \n Creation Time :<\/span> Tue Sep 22<\/span> 18<\/span>:25:23 2026<\/span>
                        \n Raid Level :<\/span> raid5
                        \n Array Size :<\/span> 62862336<\/span> (<\/span>59.95<\/span> GiB 64.37<\/span> GB)<\/span>
                        \n Used Dev Size :<\/span> 20954112<\/span> (<\/span>19.98<\/span> GiB 21.46<\/span> GB)<\/span>
                        \n Raid Devices :<\/span> 5<\/span>
                        \n Total Devices :<\/span> 6<\/span>
                        \n Persistence :<\/span> Superblock is persistent<\/p>\n

                        Update Time :<\/span> Tue Sep 22<\/span> 18<\/span>:35:27 2026<\/span>
                        \n State :<\/span> clean, reshaping
                        \n Active Devices :<\/span> 5<\/span>
                        \n Working Devices :<\/span> 6<\/span>
                        \n Failed Devices :<\/span> 0<\/span>
                        \n Spare Devices :<\/span> 1<\/span><\/p>\n

                        Layout :<\/span> left-symmetric
                        \n Chunk Size :<\/span> 512K<\/p>\n

                        Consistency Policy :<\/span> resync<\/p>\n

                        Reshape Status :<\/span> 10<\/span>% complete
                        \n Delta Devices :<\/span> 1<\/span>, (<\/span>4<\/span>–><\/span>5<\/span>)<\/span><\/p>\n

                        Name :<\/span> server.feiyun.cloud:5 (<\/span>local to host<\/span> server.feiyun.cloud)<\/span>
                        \n UUID :<\/span> 8103634a:422d3fec:734dff40:2579d5eb
                        \n Events :<\/span> 72<\/span><\/p>\n

                        Number Major Minor RaidDevice State
                        \n 5<\/span> 8<\/span> 80<\/span> 0<\/span> active sync<\/span> \/dev\/sdf
                        \n 1<\/span> 8<\/span> 32<\/span> 1<\/span> active sync<\/span> \/dev\/sdc
                        \n 2<\/span> 8<\/span> 48<\/span> 2<\/span> active sync<\/span> \/dev\/sdd
                        \n 4<\/span> 8<\/span> 64<\/span> 3<\/span> active sync<\/span> \/dev\/sde
                        \n 7<\/span> 8<\/span> 96<\/span> 4<\/span> active sync<\/span> \/dev\/sdg<\/p>\n

                        6<\/span> 8<\/span> 16<\/span> – spare \/dev\/sdb<\/p>\n

                        # \u786e\u8ba4 raid \u5bb9\u91cf：\u4ece 60G \u53d8\u6210 80G（\u589e\u52a0\u4e86 20G，\u5373\u591a\u4e86\u4e00\u5757\u76d8）<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:35:28]<\/span># lsblk \/dev\/md5<\/span>
                        \nNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
                        \nmd5 9<\/span>:5 0<\/span> 80G 0<\/span> raid5 \/raid\/raid5<\/p>\n

                        # \u6269\u5bb9\u540e\u8fd8\u8981\u6269\u5c55\u6587\u4ef6\u7cfb\u7edf！\u5426\u5219\u65b0\u7a7a\u95f4\u7528\u4e0d\u4e0a<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:40:06]<\/span># xfs_growfs \/raid\/raid5<\/span>
                        \nmeta-data=<\/span>\/dev\/md5 isize<\/span>=<\/span>512<\/span> agcount<\/span>=<\/span>16<\/span>, agsize<\/span>=<\/span>982144<\/span> blks
                        \n =<\/span> sectsz<\/span>=<\/span>512<\/span> attr<\/span>=<\/span>2<\/span>, projid32bit<\/span>=<\/span>1<\/span>
                        \n =<\/span> crc<\/span>=<\/span>1<\/span> finobt<\/span>=<\/span>0<\/span> spinodes<\/span>=<\/span>0<\/span>
                        \ndata =<\/span> bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>15714304<\/span>, imaxpct<\/span>=<\/span>25<\/span>
                        \n =<\/span> sunit<\/span>=<\/span>128<\/span> swidth<\/span>=<\/span>384<\/span> blks
                        \nnaming =<\/span>version 2<\/span> bsize<\/span>=<\/span>4096<\/span> ascii-ci=<\/span>0<\/span> ftype<\/span>=<\/span>1<\/span>
                        \nlog =<\/span>internal bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>7680<\/span>, version<\/span>=<\/span>2<\/span>
                        \n =<\/span> sectsz<\/span>=<\/span>512<\/span> sunit<\/span>=<\/span>8<\/span> blks, lazy-count=<\/span>1<\/span>
                        \nrealtime =<\/span>none extsz<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>0<\/span>, rtextents<\/span>=<\/span>0<\/span>
                        \ndata blocks changed from 15714304<\/span> to 20954112<\/span><\/p>\n

                        [<\/span>root@server ~ 18<\/span>:40:37]<\/span># df -h \/raid\/raid5<\/span>
                        \n\u6587\u4ef6\u7cfb\u7edf \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9
                        \n\/dev\/md5 80G 34M 80G 1<\/span>% \/raid\/raid5<\/p>\n

                        \u601d\u8003：\u4e3a\u4ec0\u4e48\u6269\u5bb9\u78c1\u76d8\u540e\u8fd8\u8981\u6269\u5c55\u6587\u4ef6\u7cfb\u7edf？
                        \n\u7b54：\u65b0\u52a0\u7684\u78c1\u76d8\u53ea\u8ba9 RAID \u8bbe\u5907\u7684\u5757\u8bbe\u5907\u5bb9\u91cf\u53d8\u5927\u4e86，\u4f46\u4e0a\u9762\u7684 XFS \u6587\u4ef6\u7cfb\u7edf\u8fd8\u505c\u7559\u5728\u539f\u6765\u7684\u5927\u5c0f，\u65b0\u7a7a\u95f4\u300c\u6ca1\u88ab\u6587\u4ef6\u7cfb\u7edf\u63a5\u7ba1\u300d，\u6240\u4ee5\u8981\u7528 xfs_growfs \u628a\u6587\u4ef6\u7cfb\u7edf\u6491\u5927\u5230\u65b0\u5bb9\u91cf\u3002\u5757\u8bbe\u5907\u6269\u5bb9\u548c\u6267\u884c\u6587\u4ef6\u7cfb\u7edf\u6269\u5bb9\u662f\u4e24\u6b65，\u7f3a\u4e00\u4e0d\u53ef\u3002<\/p>\n

                        7.8 \u5220\u9664 RAID<\/h5>\n

                        [<\/span>root@server ~ 18<\/span>:40:56]<\/span># umount \/dev\/md5<\/span>
                        \n[<\/span>root@server ~ 18<\/span>:44:26]<\/span># mdadm –stop \/dev\/md5<\/span>
                        \nmdadm: stopped \/dev\/md5
                        \n[<\/span>root@server ~ 18<\/span>:44:37]<\/span># mdadm –zero-superblock \/dev\/sd{b..g}<\/span><\/p>\n

                        7.9 \u91cd\u6784（\u91cd\u65b0\u88c5\u914d）RAID<\/h5>\n

                        # stop \u4e4b\u540e\u3001\u6e05\u9664 superblock \u4e4b\u524d，\u60f3\u6062\u590d\u539f\u6765\u7684 md5 \u5c31\u7528 –assemble，\u6570\u636e\u4e0d\u4f1a\u4e22\u5931<\/span>
                        \n[<\/span>root@centos7 ~]<\/span># mdadm –assemble \/dev\/md5 \/dev\/sd{b..g}<\/span><\/p>\n

                        –assemble（\u88c5\u914d）\u662f –stop \u7684\u9006\u64cd\u4f5c：\u628a\u8fd8\u5728\u6210\u5458\u76d8\u4e0a\u7684 RAID \u5143\u6570\u636e\u91cd\u65b0\u8bc6\u522b\u3001\u7ec4\u88c5\u56de\u539f\u6765\u7684\u9635\u5217\u3002\u5173\u952e\u662f superblock \u6ca1\u88ab\u6e05\u6389（\u6ca1\u505a –zero-superblock）\u624d\u80fd\u88c5\u914d\u56de\u6765，\u6570\u636e\u4e0d\u4e22\u3002<\/p>\n

                        \n

                        \u7b2c\u4e09\u90e8\u5206：LVM \u903b\u8f91\u5377\u7ba1\u7406<\/h3>\n

                        \u516b\u3001\u4e3a\u4ec0\u4e48\u8981\u7528 LVM<\/h4>\n

                        8.1 \u4f20\u7edf\u786c\u76d8\u5206\u533a\u65b9\u6848\u7684\u7f3a\u70b9<\/h5>\n
                          \n
                        • \u786c\u76d8\u5206\u533a\u7a7a\u95f4\u5fc5\u987b\u8fde\u7eed，\u6269\u5bb9\u5f88\u9ebb\u70e6\u2014\u2014\u5c24\u5176\u662f\u8981\u6269\u5bb9\u7684\u5206\u533a\u540e\u9762\u6ca1\u6709\u7a7a\u95f2\u7a7a\u95f4\u65f6；<\/li>\n
                        • \u5206\u533a\u521b\u5efa\u7684\u6587\u4ef6\u7cfb\u7edf\u4e0d\u80fd\u8de8\u591a\u5757\u786c\u76d8，\u53d7\u5355\u5757\u76d8\u5bb9\u91cf\u9650\u5236；<\/li>\n
                        • \u5355\u5757\u786c\u76d8\u635f\u574f，\u5176\u4e0a\u7684\u6587\u4ef6\u7cfb\u7edf\u6570\u636e\u4e5f\u4f1a\u4e22\u5931（\u6ca1\u6709\u5197\u4f59）\u3002<\/li>\n<\/ul>\n
                          8.2 \u903b\u8f91\u5377\u7ba1\u7406\u65b9\u6848\u7684\u4f18\u70b9<\/h5>\n
                            \n
                          • \u66f4\u7075\u6d3b\u5730\u6269\u5c55\u548c\u7f29\u51cf\u6587\u4ef6\u7cfb\u7edf\u7a7a\u95f4；<\/li>\n
                          • \u6587\u4ef6\u7cfb\u7edf\u53ef\u4ee5\u8de8\u591a\u5757\u786c\u76d8，\u80fd\u521b\u5efa\u8d85\u5927\u5bb9\u91cf\u6587\u4ef6\u7cfb\u7edf；<\/li>\n
                          • \u53ef\u4ee5\u521b\u5efa\u955c\u50cf\u5377\u4fdd\u8bc1\u5197\u4f59，\u5373\u4f7f\u5355\u5757\u786c\u76d8\u635f\u574f，\u6570\u636e\u4e5f\u4e0d\u4f1a\u4e22\u5931；<\/li>\n
                          • \u53ef\u4ee5\u521b\u5efa\u5feb\u7167，\u4fdd\u7559\u67d0\u4e00\u65f6\u523b\u7684\u6570\u636e（\u7c7b\u4f3c\u865a\u62df\u673a\u5feb\u7167）\u3002<\/li>\n<\/ul>\n

                            \u4e00\u53e5\u8bdd：\u4f20\u7edf\u5206\u533a\u662f\u300c\u5b9a\u6b7b\u7684\u683c\u5b50\u300d，LVM \u662f\u300c\u80fd\u968f\u610f\u4f38\u7f29\u7684\u5b58\u50a8\u6c60\u300d\u3002<\/p>\n

                            \u4e5d\u3001LVM \u57fa\u672c\u6982\u5ff5<\/h4>\n

                            LVM \u662f Logical Volume Manager（\u903b\u8f91\u5377\u7ba1\u7406）\u7684\u7b80\u79f0\u3002\u5b83\u628a\u82e5\u5e72\u78c1\u76d8\u6216\u5206\u533a\u8fde\u6210\u4e00\u4e2a\u6574\u5757\u7684\u5377\u7ec4（\u5b58\u50a8\u6c60），\u7ba1\u7406\u5458\u53ef\u4ee5\u5728\u5377\u7ec4\u4e0a\u4efb\u610f\u521b\u5efa\u903b\u8f91\u5377，\u518d\u5728\u903b\u8f91\u5377\u4e0a\u5efa\u6587\u4ef6\u7cfb\u7edf\u3002<\/p>\n

                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                            \u4e09\u7ea7\u7ed3\u6784：<\/p>\n\n\u5c42\u7ea7\u5168\u79f0\u542b\u4e49\u7c7b\u6bd4<\/tr>\n\n\n\n\n
                            PV<\/td>\nPhysical Volume（\u7269\u7406\u5377）<\/td>\nLVM \u7684\u57fa\u672c\u5b58\u50a8\u5757，\u7531\u5757\u8bbe\u5907（\u78c1\u76d8\/\u5206\u533a\/RAID）\u521b\u5efa<\/td>\n\u4e00\u5757\u5757\u786c\u76d8<\/td>\n<\/tr>\n
                            VG<\/td>\nVolume Group（\u5377\u7ec4）<\/td>\n\u7531\u4e00\u4e2a\u6216\u591a\u4e2a PV \u7ec4\u6210\u7684\u903b\u8f91\u5b58\u50a8\u7a7a\u95f4<\/td>\n\u4e00\u4e2a\u300c\u5b58\u50a8\u6c60\u300d<\/td>\n<\/tr>\n
                            LV<\/td>\nLogical Volume（\u903b\u8f91\u5377）<\/td>\n\u4ece VG \u4e2d\u5212\u5206\u51fa\u6765\u7684\u903b\u8f91\u7a7a\u95f4<\/td>\n\u6c60\u91cc\u7684\u300c\u5206\u533a\u300d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                            \u5173\u7cfb\u4e00\u53e5\u8bdd：\u591a\u4e2a PV \u7ec4\u6210 VG，VG \u91cc\u521b\u5efa\u591a\u4e2a LV，LV \u4e0a\u5efa\u6587\u4ef6\u7cfb\u7edf\u7ed9\u7528\u6237\u7528\u3002<\/p>\n

                            LVM \u57fa\u672c\u6d41\u7a0b：\u2460 \u521b\u5efa\u7269\u7406\u5377（pvcreate）\u2192 \u2461 \u521b\u5efa\u5377\u7ec4（vgcreate）\u2192 \u2462 \u521b\u5efa\u903b\u8f91\u5377（lvcreate）\u3002<\/p>\n

                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                            \u5341\u3001\u903b\u8f91\u5377\u57fa\u672c\u7ba1\u7406<\/h4>\n

                            10.1 \u521b\u5efa\u7269\u7406\u5377（PV）<\/h5>\n

                            # \u521b\u5efa\u5355\u4e2a PV<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:11:26]<\/span># pvcreate \/dev\/sdb<\/span>
                            \n Physical volume "\/dev\/sdb"<\/span> successfully created.<\/p>\n

                            # \u4e00\u6b21\u521b\u5efa\u591a\u4e2a PV<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:11:36]<\/span># pvcreate \/dev\/sd{c,d}<\/span>
                            \n Physical volume "\/dev\/sdc"<\/span> successfully created.
                            \n Physical volume "\/dev\/sdd"<\/span> successfully created.<\/p>\n

                            # \u67e5\u770b PV \u5217\u8868（pvs）<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:11:51]<\/span># pvs<\/span>
                            \n PV VG Fmt Attr PSize PFree
                            \n \/dev\/sda2 centos lvm2 a– <<\/span>199<\/span>.00g 4<\/span>.00m
                            \n \/dev\/sdb lvm2 — 20<\/span>.00g 20<\/span>.00g
                            \n \/dev\/sdc lvm2 — 20<\/span>.00g 20<\/span>.00g
                            \n \/dev\/sdd lvm2 — 20<\/span>.00g 20<\/span>.00g<\/p>\n

                            # \u67e5\u770b\u5355\u4e2a PV \u8be6\u7ec6\u4fe1\u606f<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:11:54]<\/span># pvdisplay \/dev\/sdb<\/span>
                            \n "\/dev\/sdb"<\/span> is a new physical volume of "20.00 GiB"<\/span>
                            \n — NEW Physical volume —
                            \n PV Name \/dev\/sdb
                            \n VG Name
                            \n PV Size 20.00<\/span> GiB
                            \n Allocatable NO
                            \n PE Size 0<\/span>
                            \n Total PE 0<\/span>
                            \n Free PE 0<\/span>
                            \n Allocated PE 0<\/span>
                            \n PV UUID FeW2jz-KdUB-si74-Qemh-fLBa-4wrU-tHtEGL<\/p>\n

                            pvs \u662f\u300clist\u300d\u7684\u7b80\u8868（\u7c7b\u4f3c ls），pvdisplay \u662f\u300cdetail\u300d\u7684\u8be6\u7ec6\u7248（\u7c7b\u4f3c ls -l）\u3002\/dev\/sda2 \u662f\u88c5\u7cfb\u7edf\u65f6 CentOS \u81ea\u5df1\u5206\u7684 PV，\u5c5e centos \u5377\u7ec4；\u6211\u4eec\u65b0\u5efa\u7684 sdb\/sdc\/sdd \u8fd8\u6ca1\u6709 VG（VG \u5217\u4e3a\u7a7a）\u3002<\/p>\n

                            10.2 \u521b\u5efa\u5377\u7ec4（VG）<\/h5>\n

                            # \u521b\u5efa\u5305\u542b\u5355\u4e2a PV \u7684 VG<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:12:07]<\/span># vgcreate webapp \/dev\/sdb<\/span>
                            \n Volume group "webapp"<\/span> successfully created<\/p>\n

                            # \u521b\u5efa\u5305\u542b\u591a\u4e2a PV \u7684 VG<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:13:24]<\/span># vgcreate dbapp \/dev\/sd{c,d}<\/span>
                            \n Volume group "dbapp"<\/span> successfully created<\/p>\n

                            [<\/span>root@server ~ 19<\/span>:13:39]<\/span># pvs<\/span>
                            \n PV VG Fmt Attr PSize PFree
                            \n \/dev\/sda2 centos lvm2 a– <<\/span>199<\/span>.00g 4<\/span>.00m
                            \n \/dev\/sdb webapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>20<\/span>.00g
                            \n \/dev\/sdc dbapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>20<\/span>.00g
                            \n \/dev\/sdd dbapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>20<\/span>.00g<\/p>\n

                            # \u67e5\u770b VG \u5217\u8868（vgs）<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:13:46]<\/span># vgs<\/span>
                            \n VG #PV #LV #SN Attr VSize VFree<\/span>
                            \n centos 1<\/span> 3<\/span> 0<\/span> wz–n- <<\/span>199<\/span>.00g 4<\/span>.00m
                            \n dbapp 2<\/span> 0<\/span> 0<\/span> wz–n- 39<\/span>.99g 39<\/span>.99g
                            \n webapp 1<\/span> 0<\/span> 0<\/span> wz–n- <<\/span>20<\/span>.00g <<\/span>20<\/span>.00g<\/p>\n

                            # \u67e5\u770b\u5355\u4e2a VG \u8be6\u7ec6\u4fe1\u606f<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:13:51]<\/span># vgdisplay dbapp<\/span>
                            \n — Volume group —
                            \n VG Name dbapp
                            \n System ID
                            \n Format lvm2
                            \n Metadata Areas 2<\/span>
                            \n Metadata Sequence No 1<\/span>
                            \n VG Access read\/write
                            \n VG Status resizable
                            \n MAX LV 0<\/span>
                            \n Cur LV 0<\/span>
                            \n Open LV 0<\/span>
                            \n Max PV 0<\/span>
                            \n Cur PV 2<\/span>
                            \n Act PV 2<\/span>
                            \n VG Size 39.99<\/span> GiB
                            \n PE Size 4.00<\/span> MiB
                            \n Total PE 10238<\/span>
                            \n Alloc PE \/ Size 0<\/span> \/ 0<\/span>
                            \n Free PE \/ Size 10238<\/span> \/ 39.99<\/span> GiB
                            \n VG UUID kHrWwc-Lx8U-eH7v-vWHv-D9eW-IURe-4nC2Le<\/p>\n

                            vgs \u91cc #PV #LV #SN \u5206\u522b\u662f：\u7269\u7406\u5377\u6570\u3001\u903b\u8f91\u5377\u6570\u3001\u5feb\u7167\u6570\u3002dbapp \u7531 2 \u4e2a PV（sdc+sdd）\u7ec4\u6210，\u6240\u4ee5 VSize \u7ea6 39.99G\u3002<\/p>\n

                            10.3 \u521b\u5efa\u903b\u8f91\u5377（LV）<\/h5>\n

                            # \u4ece webapp \u5377\u7ec4\u5efa 5G \u7684 webapp01<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:14:04]<\/span># lvcreate -n webapp01 -L 5G webapp<\/span>
                            \n Logical volume "webapp01"<\/span> created.<\/p>\n

                            # \u4ece dbapp \u5377\u7ec4\u5efa 25G \u7684 data01<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:15:53]<\/span># lvcreate -n data01 -L 25G dbapp<\/span>
                            \nWARNING: ext4 signature detected on \/dev\/dbapp\/data01 at offset 1080<\/span>. Wipe it? [<\/span>y\/n]<\/span>: y
                            \n Wiping ext4 signature on \/dev\/dbapp\/data01.
                            \n Logical volume "data01"<\/span> created.<\/p>\n

                            # \u67e5\u770b LV \u5217\u8868<\/span>
                            \n[<\/span>root@server ~ 19<\/span>:16:17]<\/span># lvs<\/span>
                            \n LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
                            \n home centos -wi-ao—- 146<\/span>.99g
                            \n root centos -wi-ao—- 50<\/span>.00g
                            \n swap centos -wi-ao—- 2<\/span>.00g
                            \n data01 dbapp -wi-a—– 25<\/span>.00g
                            \n webapp01 webapp -wi-a—– 5<\/span>.00g<\/p>\n

                            lvcreate -n \u540d\u5b57 -L \u5927\u5c0f \u5377\u7ec4\u540d：-n \u6307\u5b9a LV \u540d\u79f0\u3001-L \u6307\u5b9a\u5bb9\u91cf\u3002<\/p>\n

                            \u903b\u8f91\u5377\u8bbe\u5907\u540d\u652f\u6301\u4ee5\u4e0b\u4e09\u79cd\u5199\u6cd5：<\/p>\n

                              \n
                            • \/dev\/vgname\/lvname<\/li>\n
                            • \/dev\/mapper\/vgname-lvname<\/li>\n
                            • \/dev\/dm-N<\/li>\n<\/ul>\n

                              # \u524d\u4e24\u79cd\u5176\u5b9e\u662f\u540c\u4e00\u4e2a\u8bbe\u5907\u7684\u8f6f\u94fe\u63a5，\u90fd\u6307\u5411 \/dev\/dm-N<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:16:49]<\/span># ls -l \/dev\/dbapp\/data01 \/dev\/mapper\/dbapp-data01<\/span>
                              \nlrwxrwxrwx 1<\/span> root root 7<\/span> 9<\/span>\u6708 22<\/span> 19<\/span>:16 \/dev\/dbapp\/data01 –><\/span> ..<\/span>\/dm-4
                              \nlrwxrwxrwx 1<\/span> root root 7<\/span> 9<\/span>\u6708 22<\/span> 19<\/span>:16 \/dev\/mapper\/dbapp-data01 –><\/span> ..<\/span>\/dm-4<\/p>\n

                              \u67e5\u770b\u5355\u4e2a LV \u8be6\u7ec6\u4fe1\u606f：<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:17:01]<\/span># lvdisplay \/dev\/dbapp\/data01<\/span>
                              \n — Logical volume —
                              \n LV Path \/dev\/dbapp\/data01
                              \n LV Name data01
                              \n VG Name dbapp
                              \n LV UUID AnYOcX-46Vd-mYrc-eyGF-Rya7-iAA4-EvUdH9
                              \n LV Write Access read\/write
                              \n LV Creation host, time<\/span> server.feiyun.cloud, 2026<\/span>-09-22 19<\/span>:16:15 +0800
                              \n LV Status available
                              \n # open 0<\/span>
                              \n LV Size 25.00<\/span> GiB
                              \n Current LE 6400<\/span>
                              \n Segments 2<\/span>
                              \n Allocation inherit
                              \n Read ahead sectors auto
                              \n – currently set<\/span> to 8192<\/span>
                              \n Block device 253<\/span>:4<\/p>\n

                              # \u518d\u770b PV \u7a7a\u95f4\u6d88\u8017<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:17:33]<\/span># pvs<\/span>
                              \n PV VG Fmt Attr PSize PFree
                              \n \/dev\/sda2 centos lvm2 a– <<\/span>199<\/span>.00g 4<\/span>.00m
                              \n \/dev\/sdb webapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>15<\/span>.00g
                              \n \/dev\/sdc dbapp lvm2 a– <<\/span>20<\/span>.00g 0<\/span>
                              \n \/dev\/sdd dbapp lvm2 a– <<\/span>20<\/span>.00g 14<\/span>.99g<\/p>\n

                              \u53ef\u4ee5\u770b\u5230：data01 \u7684 25G \u5148\u5360\u6ee1\u4e86 \/dev\/sdc（20G，PFree \u53d8 0），\u53c8\u7528\u4e86 \/dev\/sdd \u7684 5G（PFree \u5269 14.99g）\u3002\u8fd9\u8bf4\u660e LV \u53ef\u4ee5\u8de8\u591a\u4e2a PV\u3002<\/p>\n

                              10.4 \u521b\u5efa\u6587\u4ef6\u7cfb\u7edf\u5e76\u6302\u8f7d<\/h5>\n

                              [<\/span>root@server ~ 19<\/span>:18:08]<\/span># mkfs.xfs \/dev\/webapp\/webapp01<\/span>
                              \nmeta-data=<\/span>\/dev\/webapp\/webapp01 isize<\/span>=<\/span>512<\/span> agcount<\/span>=<\/span>4<\/span>, agsize<\/span>=<\/span>327680<\/span> blks
                              \n =<\/span> sectsz<\/span>=<\/span>512<\/span> attr<\/span>=<\/span>2<\/span>, projid32bit<\/span>=<\/span>1<\/span>
                              \n =<\/span> crc<\/span>=<\/span>1<\/span> finobt<\/span>=<\/span>0<\/span>, sparse<\/span>=<\/span>0<\/span>
                              \ndata =<\/span> bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>1310720<\/span>, imaxpct<\/span>=<\/span>25<\/span>
                              \n =<\/span> sunit<\/span>=<\/span>0<\/span> swidth<\/span>=<\/span>0<\/span> blks
                              \nnaming =<\/span>version 2<\/span> bsize<\/span>=<\/span>4096<\/span> ascii-ci=<\/span>0<\/span> ftype<\/span>=<\/span>1<\/span>
                              \nlog =<\/span>internal log bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>2560<\/span>, version<\/span>=<\/span>2<\/span>
                              \n =<\/span> sectsz<\/span>=<\/span>512<\/span> sunit<\/span>=<\/span>0<\/span> blks, lazy-count=<\/span>1<\/span>
                              \nrealtime =<\/span>none extsz<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>0<\/span>, rtextents<\/span>=<\/span>0<\/span><\/p>\n

                              [<\/span>root@server ~ 19<\/span>:18:45]<\/span># mount \/dev\/webapp\/webapp01 \/usr\/share\/nginx\/html<\/span><\/p>\n

                              \u903b\u8f91\u5377\u7684\u4f7f\u7528\u65b9\u5f0f\u548c\u666e\u901a\u5206\u533a\u5b8c\u5168\u4e00\u6837：\u683c\u5f0f\u5316 \u2192 \u6302\u8f7d \u2192 \u7528\u3002\u57fa\u4e8e LVM \u7684\u6587\u4ef6\u7cfb\u7edf\u505a\u6301\u4e45\u5316\u6302\u8f7d，\u540c\u6837\u8981\u6539 \/etc\/fstab\u3002<\/p>\n

                              10.5 \u6e05\u7406（\u5220\u9664 LV \u2192 VG \u2192 PV）<\/h5>\n

                              # 1. \u5378\u8f7d\u6587\u4ef6\u7cfb\u7edf<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:19:07]<\/span># umount \/dev\/webapp\/webapp01<\/span><\/p>\n

                              # 2. \u5220\u9664 LV<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:19:51]<\/span># lvremove \/dev\/webapp\/webapp01 \/dev\/dbapp\/data01<\/span>
                              \nDo you really want to remove active logical volume webapp\/webapp01? [<\/span>y\/n]<\/span>: y
                              \n Logical volume "webapp01"<\/span> successfully removed
                              \nDo you really want to remove active logical volume dbapp\/data01? [<\/span>y\/n]<\/span>: y
                              \n Logical volume "data01"<\/span> successfully removed<\/p>\n

                              # 3. \u5220\u9664 VG<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:20:10]<\/span># vgremove webapp dbapp<\/span>
                              \n Volume group "webapp"<\/span> successfully removed
                              \n Volume group "dbapp"<\/span> successfully removed<\/p>\n

                              # 4. \u5220\u9664 PV<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:21:13]<\/span># pvremove \/dev\/sd{b..d}<\/span>
                              \n Labels on physical volume "\/dev\/sdb"<\/span> successfully wiped.
                              \n Labels on physical volume "\/dev\/sdc"<\/span> successfully wiped.
                              \n Labels on physical volume "\/dev\/sdd"<\/span> successfully wiped.<\/p>\n

                              \u6e05\u7406\u987a\u5e8f\u8981\u53cd\u8fc7\u6765：\u5378\u8f7d \u2192 lvremove \u2192 vgremove \u2192 pvremove（\u5148\u5220\u4e0a\u5c42 LV，\u518d\u5220 VG，\u6700\u540e\u5220 PV）\u3002\u4e0d\u80fd\u8df3\u7ea7\u5220\u3002<\/p>\n

                              \u5341\u4e00\u3001\u6269\u5c55\u548c\u7f29\u51cf\u5377\u7ec4<\/h4>\n

                              11.1 \u73af\u5883\u51c6\u5907<\/h5>\n

                              [<\/span>root@server ~ 19<\/span>:21:31]<\/span># vgcreate webapp \/dev\/sdb<\/span>
                              \n Physical volume "\/dev\/sdb"<\/span> successfully created.
                              \n Volume group "webapp"<\/span> successfully created<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:22:20]<\/span># lvcreate -n webapp01 -L 10G webapp<\/span>
                              \nWARNING: xfs signature detected on \/dev\/webapp\/webapp01 at offset 0<\/span>. Wipe it? [<\/span>y\/n]<\/span>: y
                              \n Wiping xfs signature on \/dev\/webapp\/webapp01.
                              \n Logical volume "webapp01"<\/span> created.<\/p>\n

                              \u5c0f\u7ec6\u8282：vgcreate \u65f6\u5982\u679c\u6307\u5b9a\u7684\u5757\u8bbe\u5907\u8fd8\u4e0d\u662f\u7269\u7406\u5377，\u4f1a\u81ea\u52a8\u5148\u628a\u5b83\u521b\u5efa\u4e3a PV（\u6240\u4ee5\u4e0a\u9762\u80fd\u770b\u5230 \u201cPhysical volume created\u201d \u7684\u63d0\u793a）\u3002<\/p>\n

                              11.2 \u6269\u5c55\u5377\u7ec4（vgextend）<\/h5>\n

                              \u5377\u7ec4\u7a7a\u95f4\u4e0d\u8db3\u65f6，\u5411\u5377\u7ec4\u91cc\u52a0\u65b0\u7684\u7269\u7406\u5377\u5373\u53ef\u6269\u5c55：<\/p>\n

                              # \u628a sdc\u3001sdd \u52a0\u8fdb webapp \u5377\u7ec4<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:22:43]<\/span># vgextend webapp \/dev\/sd{c,d}<\/span>
                              \n Physical volume "\/dev\/sdc"<\/span> successfully created.
                              \n Physical volume "\/dev\/sdd"<\/span> successfully created.
                              \n Volume group "webapp"<\/span> successfully extended<\/p>\n

                              11.3 \u7f29\u51cf\u5377\u7ec4（vgreduce）<\/h5>\n

                              \u5377\u7ec4\u91cc\u6709\u591a\u4f59\u7684 PV\u3001\u6216\u8981\u66f4\u6362\u5c0f\u5bb9\u91cf\u7684 PV \u65f6，\u628a PV \u4ece\u5377\u7ec4\u91cc\u5254\u9664\u3002\u5220\u9664\u524d\u786e\u4fdd PV \u4e0d\u5728\u4f7f\u7528\u4e2d\u3002<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:23:29]<\/span># pvs<\/span>
                              \n PV VG Fmt Attr PSize PFree
                              \n \/dev\/sda2 centos lvm2 a– <<\/span>199<\/span>.00g 4<\/span>.00m
                              \n \/dev\/sdb webapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>10<\/span>.00g
                              \n \/dev\/sdc webapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>20<\/span>.00g
                              \n \/dev\/sdd webapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>20<\/span>.00g<\/p>\n

                              # \u76f4\u63a5\u628a\u8fd8\u5728\u4f7f\u7528\u7684 sdb \u4ece webapp \u5254\u9664 \u2192 \u62a5\u9519<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:23:47]<\/span># vgreduce webapp \/dev\/sdb<\/span>
                              \n Physical volume "\/dev\/sdb"<\/span> still in<\/span> use<\/p>\n

                              # \u89e3\u51b3：\u5148\u628a sdb \u4e0a\u7684\u6570\u636e\u632a\u8d70（pvmove）<\/span>
                              \n# \u632a\u5230\u5377\u7ec4\u5176\u4ed6 PV（\u81ea\u52a8\u5206\u914d）<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:24:05]<\/span># pvmove \/dev\/sdb<\/span>
                              \n# \u6216\u8005\u632a\u5230\u6307\u5b9a PV<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:24:05]<\/span># pvmove \/dev\/sdb \/dev\/sdd<\/span>
                              \n \/dev\/sdb: Moved: 1.52<\/span>%
                              \n \/dev\/sdb: Moved: 100.00<\/span>%<\/p>\n

                              # \u6570\u636e\u632a\u8d70\u540e\u5b89\u88c5\u53ef\u6b63\u5e38\u5254\u9664<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:24:49]<\/span># pvs<\/span>
                              \n PV VG Fmt Attr PSize PFree
                              \n \/dev\/sda2 centos lvm2 a– <<\/span>199<\/span>.00g 4<\/span>.00m
                              \n \/dev\/sdb webapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>20<\/span>.00g
                              \n \/dev\/sdc webapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>10<\/span>.00g
                              \n \/dev\/sdd webapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>20<\/span>.00g<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:25:44]<\/span># pvs<\/span>
                              \n PV VG Fmt Attr PSize PFree
                              \n \/dev\/sda2 centos lvm2 a– <<\/span>199<\/span>.00g 4<\/span>.00m
                              \n \/dev\/sdb lvm2 — 20<\/span>.00g 20<\/span>.00g
                              \n \/dev\/sdc webapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>10<\/span>.00g
                              \n \/dev\/sdd webapp lvm2 a– <<\/span>20<\/span>.00g <<\/span>20<\/span>.00g<\/p>\n

                              \u5173\u952e\u5957\u8def：vgreduce \u62a5 still in use \u2192 \u5148\u7528 pvmove \u628a\u8be5 PV \u4e0a\u7684\u6570\u636e\u642c\u5230\u522b\u7684 PV \u2192 \u518d vgreduce \u5254\u9664\u3002pvmove \u5c31\u662f\u628a\u6570\u636e\u5728\u7ebf\u642c\u79fb，\u642c\u5b8c\u8fd9\u5757\u76d8\u5c31\u817e\u7a7a\u4e86\u3002<\/p>\n

                              \u5341\u4e8c\u3001\u6269\u5c55\u548c\u7f29\u51cf\u903b\u8f91\u5377<\/h4>\n

                              12.1 \u6269\u5c55\u903b\u8f91\u5377（lvextend）<\/h5>\n

                              \u5377\u7ec4\u7a7a\u95f4\u5145\u8db3\u65f6，\u53ef\u4ee5\u6269\u5c55\u903b\u8f91\u5377：<\/p>\n

                              # +2G（\u5728\u539f\u6765\u7684\u57fa\u7840\u4e0a\u52a0 2G）<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:25:50]<\/span># lvextend -L +2G \/dev\/webapp\/webapp01<\/span>
                              \n Size of logical volume webapp\/webapp01 changed from 10.00<\/span> GiB (<\/span>2560<\/span> extents)<\/span> to 12.00<\/span> GiB (<\/span>3072<\/span> extents)<\/span>.
                              \n Logical volume webapp\/webapp01 successfully resized.<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:28:36]<\/span># lvs \/dev\/webapp\/webapp01<\/span>
                              \n LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
                              \n webapp01 webapp -wi-a—– 12<\/span>.00g<\/p>\n

                              -L +2G \u662f\u300c\u52a0 2G\u300d，-L 12G \u662f\u300c\u76f4\u63a5\u8bbe\u6210 12G\u300d，\u6ce8\u610f + \u53f7\u7684\u542b\u4e49\u3002<\/p>\n

                              12.2 \u7f29\u51cf\u903b\u8f91\u5377（lvreduce）<\/h5>\n

                              # -2G（\u51cf 2G）<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:28:45]<\/span># lvreduce -L -2G \/dev\/webapp\/webapp01<\/span>
                              \n WARNING: Reducing active logical volume to 10.00<\/span> GiB.
                              \n THIS MAY DESTROY YOUR DATA (<\/span>filesystem etc.)<\/span>
                              \nDo you really want to reduce webapp\/webapp01? [<\/span>y\/n]<\/span>: y
                              \n Size of logical volume webapp\/webapp01 changed from 12.00<\/span> GiB (<\/span>3072<\/span> extents)<\/span> to 10.00<\/span> GiB (<\/span>2560<\/span> extents)<\/span>.
                              \n Logical volume webapp\/webapp01 successfully resized.<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:29:13]<\/span># lvs \/dev\/webapp\/webapp01<\/span>
                              \n LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
                              \n webapp01 webapp -wi-a—– 10<\/span>.00g<\/p>\n

                              \u5341\u4e09\u3001\u6269\u5c55\u548c\u7f29\u51cf\u6587\u4ef6\u7cfb\u7edf<\/h4>\n

                              \u524d\u9762\u6269\/\u7f29\u7684\u90fd\u662f\u300c\u5757\u8bbe\u5907\u300d\u5c42\u9762，\u6700\u7ec8\u843d\u5730\u5230\u6587\u4ef6\u7cfb\u7edf\u65f6，\u4e0d\u540c\u6587\u4ef6\u7cfb\u7edf\u652f\u6301\u7684\u80fd\u529b\u4e0d\u540c：<\/p>\n\n\u6587\u4ef6\u7cfb\u7edf\u652f\u6301\u6269\u5c55\u652f\u6301\u7f29\u51cf<\/tr>\n\n\n\n
                              XFS<\/td>\n\u2705 \u652f\u6301<\/td>\n\u274c \u4e0d\u652f\u6301<\/td>\n<\/tr>\n
                              EXT4<\/td>\n\u2705 \u652f\u6301<\/td>\n\u2705 \u652f\u6301<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                              13.1 \u6269\u5c55 XFS \u6587\u4ef6\u7cfb\u7edf<\/h5>\n

                              XFS \u53ea\u652f\u6301\u6269\u5c55，\u4e0d\u652f\u6301\u7f29\u51cf\u3002<\/p>\n

                              \u73af\u5883\u51c6\u5907（\u683c\u5f0f\u5316\u3001\u6302\u8f7d\u3001\u5efa\u6570\u636e）：<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:29:21]<\/span># mkfs.xfs \/dev\/webapp\/webapp01<\/span>
                              \nmeta-data=<\/span>\/dev\/webapp\/webapp01 isize<\/span>=<\/span>512<\/span> agcount<\/span>=<\/span>4<\/span>, agsize<\/span>=<\/span>655360<\/span> blks
                              \n =<\/span> sectsz<\/span>=<\/span>512<\/span> attr<\/span>=<\/span>2<\/span>, projid32bit<\/span>=<\/span>1<\/span>
                              \n =<\/span> crc<\/span>=<\/span>1<\/span> finobt<\/span>=<\/span>0<\/span>, sparse<\/span>=<\/span>0<\/span>
                              \ndata =<\/span> bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>2621440<\/span>, imaxpct<\/span>=<\/span>25<\/span>
                              \n =<\/span> sunit<\/span>=<\/span>0<\/span> swidth<\/span>=<\/span>0<\/span> blks
                              \nnaming =<\/span>version 2<\/span> bsize<\/span>=<\/span>4096<\/span> ascii-ci=<\/span>0<\/span> ftype<\/span>=<\/span>1<\/span>
                              \nlog =<\/span>internal log bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>2560<\/span>, version<\/span>=<\/span>2<\/span>
                              \n =<\/span> sectsz<\/span>=<\/span>512<\/span> sunit<\/span>=<\/span>0<\/span> blks, lazy-count=<\/span>1<\/span>
                              \nrealtime =<\/span>none extsz<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>0<\/span>, rtextents<\/span>=<\/span>0<\/span><\/p>\n

                              [<\/span>root@server ~ 19<\/span>:30:07]<\/span># mkdir \/usr\/share\/nginx\/html<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:30:18]<\/span># mount \/dev\/webapp\/webapp01 \/usr\/share\/nginx\/html<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:30:47]<\/span># cp \/etc\/ho* \/usr\/share\/nginx\/html<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:30:58]<\/span># ls \/usr\/share\/nginx\/html<\/span>
                              \nhost.conf hostname<\/span> hosts hosts.allow hosts.deny<\/p>\n

                              \u6269\u5c55\u4e24\u6b65\u8d70：<\/p>\n

                              # \u7b2c\u4e00\u6b65：\u6269\u5c55\u903b\u8f91\u5377<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:32:28]<\/span># lvextend -L 15G \/dev\/webapp\/webapp01<\/span>
                              \n Size of logical volume webapp\/webapp01 changed from 10.00<\/span> GiB (<\/span>2560<\/span> extents)<\/span> to 15.00<\/span> GiB (<\/span>3840<\/span> extents)<\/span>.
                              \n Logical volume webapp\/webapp01 successfully resized.<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:32:37]<\/span># lvs \/dev\/webapp\/webapp01<\/span>
                              \n LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
                              \n webapp01 webapp -wi-ao—- 15<\/span>.00g<\/p>\n

                              # \u7b2c\u4e8c\u6b65：\u6269\u5c55\u6587\u4ef6\u7cfb\u7edf（xfs_growfs）<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:32:46]<\/span># xfs_growfs \/usr\/share\/nginx\/html<\/span>
                              \nmeta-data=<\/span>\/dev\/mapper\/webapp-webapp01 isize<\/span>=<\/span>512<\/span> agcount<\/span>=<\/span>4<\/span>, agsize<\/span>=<\/span>655360<\/span> blks
                              \n =<\/span> sectsz<\/span>=<\/span>512<\/span> attr<\/span>=<\/span>2<\/span>, projid32bit<\/span>=<\/span>1<\/span>
                              \n =<\/span> crc<\/span>=<\/span>1<\/span> finobt<\/span>=<\/span>0<\/span> spinodes<\/span>=<\/span>0<\/span>
                              \ndata =<\/span> bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>2621440<\/span>, imaxpct<\/span>=<\/span>25<\/span>
                              \n =<\/span> sunit<\/span>=<\/span>0<\/span> swidth<\/span>=<\/span>0<\/span> blks
                              \nnaming =<\/span>version 2<\/span> bsize<\/span>=<\/span>4096<\/span> ascii-ci=<\/span>0<\/span> ftype<\/span>=<\/span>1<\/span>
                              \nlog =<\/span>internal bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>2560<\/span>, version<\/span>=<\/span>2<\/span>
                              \n =<\/span> sectsz<\/span>=<\/span>512<\/span> sunit<\/span>=<\/span>0<\/span> blks, lazy-count=<\/span>1<\/span>
                              \nrealtime =<\/span>none extsz<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>0<\/span>, rtextents<\/span>=<\/span>0<\/span>
                              \ndata blocks changed from 2621440<\/span> to 3932160<\/span><\/p>\n

                              [<\/span>root@server ~ 19<\/span>:33:03]<\/span># df -h \/usr\/share\/nginx\/html\/<\/span>
                              \n\u6587\u4ef6\u7cfb\u7edf \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9
                              \n\/dev\/mapper\/webapp-webapp01 15G 33M 15G 1<\/span>% \/usr\/share\/nginx\/html<\/p>\n

                              # \u6570\u636e\u5b8c\u597d<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:33:25]<\/span># ls \/usr\/share\/nginx\/html<\/span>
                              \nhost.conf hostname<\/span> hosts hosts.allow hosts.deny<\/p>\n

                              # \u4e00\u6b65\u5230\u4f4d：lvextend -r \u540c\u65f6\u6269\u5757\u8bbe\u5907\u548c\u6587\u4ef6\u7cfb\u7edf（r = resize）<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:33:32]<\/span># lvextend -rL 20G \/dev\/webapp\/webapp01<\/span>
                              \n Size of logical volume webapp\/webapp01 changed from 15.00<\/span> GiB (<\/span>3840<\/span> extents)<\/span> to 20.00<\/span> GiB (<\/span>5120<\/span> extents)<\/span>.
                              \n Logical volume webapp\/webapp01 successfully resized.
                              \nmeta-data=<\/span>\/dev\/mapper\/webapp-webapp01 isize<\/span>=<\/span>512<\/span> agcount<\/span>=<\/span>6<\/span>, agsize<\/span>=<\/span>655360<\/span> blks
                              \n =<\/span> sectsz<\/span>=<\/span>512<\/span> attr<\/span>=<\/span>2<\/span>, projid32bit<\/span>=<\/span>1<\/span>
                              \n =<\/span> crc<\/span>=<\/span>1<\/span> finobt<\/span>=<\/span>0<\/span> spinodes<\/span>=<\/span>0<\/span>
                              \ndata =<\/span> bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>3932160<\/span>, imaxpct<\/span>=<\/span>25<\/span>
                              \n =<\/span> sunit<\/span>=<\/span>0<\/span> swidth<\/span>=<\/span>0<\/span> blks
                              \nnaming =<\/span>version 2<\/span> bsize<\/span>=<\/span>4096<\/span> ascii-ci=<\/span>0<\/span> ftype<\/span>=<\/span>1<\/span>
                              \nlog =<\/span>internal bsize<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>2560<\/span>, version<\/span>=<\/span>2<\/span>
                              \n =<\/span> sectsz<\/span>=<\/span>512<\/span> sunit<\/span>=<\/span>0<\/span> blks, lazy-count=<\/span>1<\/span>
                              \nrealtime =<\/span>none extsz<\/span>=<\/span>4096<\/span> blocks<\/span>=<\/span>0<\/span>, rtextents<\/span>=<\/span>0<\/span>
                              \ndata blocks changed from 3932160<\/span> to 5242880<\/span><\/p>\n

                              [<\/span>root@server ~ 19<\/span>:34:46]<\/span># lvs \/dev\/webapp\/webapp01<\/span>
                              \n LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
                              \n webapp01 webapp -wi-ao—- 20<\/span>.00g<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:34:53]<\/span># df -h \/usr\/share\/nginx\/html<\/span>
                              \n\u6587\u4ef6\u7cfb\u7edf \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9
                              \n\/dev\/mapper\/webapp-webapp01 20G 33M 20G 1<\/span>% \/usr\/share\/nginx\/html<\/p>\n

                              lvextend -r \u7684\u5999\u7528：-r（resizefs）\u4f1a\u81ea\u52a8\u8c03\u7528 xfs_growfs\/resize2fs \u540c\u6b65\u6269\u5c55\u6587\u4ef6\u7cfb\u7edf，\u7701\u53bb\u300c\u5148 lvextend \u518d xfs_growfs\u300d\u4e24\u6b65\u3002<\/p>\n

                              13.2 \u6269\u5c55 EXT4 \u6587\u4ef6\u7cfb\u7edf<\/h5>\n

                              EXT4 \u65e2\u652f\u6301\u6269\u5c55\u4e5f\u652f\u6301\u7f29\u51cf\u3002<\/p>\n

                              \u73af\u5883\u51c6\u5907（\u683c\u5f0f\u5316\u3001\u6302\u8f7d\u3001\u5efa\u6570\u636e）：<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:35:08]<\/span># umount \/usr\/share\/nginx\/html<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:35:39]<\/span># mkfs.ext4 \/dev\/webapp\/webapp01<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:35:51]<\/span># mount \/dev\/webapp\/webapp01 \/usr\/share\/nginx\/html<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:36:21]<\/span># df -h \/usr\/share\/nginx\/html<\/span>
                              \n\u6587\u4ef6\u7cfb\u7edf \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9
                              \n\/dev\/mapper\/webapp-webapp01 20G 45M 19G 1<\/span>% \/usr\/share\/nginx\/html<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:36:28]<\/span># cp \/etc\/ho* \/usr\/share\/nginx\/html<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:36:38]<\/span># ls \/usr\/share\/nginx\/html<\/span>
                              \nhost.conf hostname<\/span> hosts hosts.allow hosts.deny lost+found<\/p>\n

                              \u6ce8\u610f EXT4 \u683c\u5f0f\u5316\u540e\u6302\u8f7d，\u76ee\u5f55\u91cc\u591a\u4e86\u4e2a lost+found（XFS \u6ca1\u6709），\u5b83\u662f ext \u7cfb\u5217\u6587\u4ef6\u7cfb\u7edf\u653e\u635f\u574f\u6062\u590d\u6587\u4ef6\u7684\u5730\u65b9\u3002<\/p>\n

                              \u6269\u5c55\u4e24\u6b65\u8d70：<\/p>\n

                              # \u7b2c\u4e00\u6b65：\u6269\u5c55\u903b\u8f91\u5377<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:36:44]<\/span># lvextend -L 25G \/dev\/webapp\/webapp01<\/span>
                              \n Size of logical volume webapp\/webapp01 changed from 20.00<\/span> GiB (<\/span>5120<\/span> extents)<\/span> to 25.00<\/span> GiB (<\/span>6400<\/span> extents)<\/span>.
                              \n Logical volume webapp\/webapp01 successfully resized.<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:37:12]<\/span># lvs \/dev\/webapp\/webapp01<\/span>
                              \n LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
                              \n webapp01 webapp -wi-ao—- 25<\/span>.00g<\/p>\n

                              # \u7b2c\u4e8c\u6b65：\u6269\u5c55\u6587\u4ef6\u7cfb\u7edf（EXT4 \u7528 resize2fs）<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:37:24]<\/span># resize2fs \/dev\/webapp\/webapp01<\/span>
                              \nresize2fs 1.42<\/span>.9 (<\/span>28<\/span>-Dec-2013)<\/span>
                              \nFilesystem at \/dev\/webapp\/webapp01 is mounted on \/usr\/share\/nginx\/html;<\/span> on-line resizing required
                              \nold_desc_blocks =<\/span> 3<\/span>, new_desc_blocks =<\/span> 4<\/span>
                              \nThe filesystem on \/dev\/webapp\/webapp01 is now 6553600<\/span> blocks long.<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:37:36]<\/span># df -h \/usr\/share\/nginx\/html<\/span>
                              \n\u6587\u4ef6\u7cfb\u7edf \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9
                              \n\/dev\/mapper\/webapp-webapp01 25G 44M 24G 1<\/span>% \/usr\/share\/nginx\/html<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:37:53]<\/span># ls \/usr\/share\/nginx\/html<\/span>
                              \nhost.conf hostname<\/span> hosts hosts.allow hosts.deny lost+found<\/p>\n

                              # \u4e00\u6b65\u5230\u4f4d：\u5757\u8bbe\u5907\u548c\u6587\u4ef6\u7cfb\u7edf\u4e00\u5e76\u6269\u5c55<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:38:00]<\/span># lvextend -rL 30G \/dev\/webapp\/webapp01<\/span>
                              \n[<\/span>root@server ~ 19<\/span>:39:03]<\/span># lvs \/dev\/webapp\/webapp01<\/span>
                              \n LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
                              \n webapp01 webapp -wi-ao—- 30<\/span>.00g<\/p>\n

                              [<\/span>root@server ~ 19<\/span>:39:18]<\/span># df -h \/usr\/share\/nginx\/html<\/span>
                              \n\u6587\u4ef6\u7cfb\u7edf \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9
                              \n\/dev\/mapper\/webapp-webapp01 30G 44M 28G 1<\/span>% \/usr\/share\/nginx\/html<\/p>\n

                              XFS \u6269\u6587\u4ef6\u7cfb\u7edf\u7528 xfs_growfs，EXT4 \u7528 resize2fs\u2014\u2014\u8fd9\u662f\u6700\u5bb9\u6613\u8bb0\u6df7\u7684\u4e00\u5bf9，\u52a1\u5fc5\u5206\u6e05\u3002<\/p>\n

                              13.3 \u7f29\u51cf EXT4 \u6587\u4ef6\u7cfb\u7edf<\/h5>\n

                              \u7f29\u51cf EXT4 \u7684\u6ce8\u610f\u4e8b\u9879：<\/p>\n

                                \n
                              • \u4e0d\u652f\u6301\u5728\u7ebf\u7f29\u51cf，\u5fc5\u987b\u5148\u5378\u8f7d\u518d\u7f29\u51cf；<\/li>\n
                              • \u7f29\u51cf\u540e\u7684\u5bb9\u91cf\u4e0d\u80fd\u5c0f\u4e8e\u5f53\u524d\u5df2\u4f7f\u7528\u7684\u5bb9\u91cf\u3002<\/li>\n<\/ul>\n

                                EXT4 \u51cf\u5bb9\u6d41\u7a0b（\u4e94\u6b65）：<\/p>\n

                              • \u5378\u8f7d\u6587\u4ef6\u7cfb\u7edf；<\/li>\n
                              • e2fsck \u68c0\u67e5\u6587\u4ef6\u7cfb\u7edf；<\/li>\n
                              • \u7f29\u51cf\u6587\u4ef6\u7cfb\u7edf（resize2fs）；<\/li>\n
                              • \u7f29\u51cf LV（lvreduce）；<\/li>\n
                              • \u6302\u8f7d\u6d4b\u8bd5\u3002<\/li>\n

                                # 1. \u5378\u8f7d<\/span>
                                \n[<\/span>root@server ~ 19<\/span>:39:32]<\/span># umount \/usr\/share\/nginx\/html<\/span><\/p>\n

                                # 2. \u68c0\u67e5\u6587\u4ef6\u7cfb\u7edf（-f \u5f3a\u5236\u68c0\u67e5）<\/span>
                                \n[<\/span>root@server ~ 19<\/span>:40:07]<\/span># e2fsck -f \/dev\/webapp\/webapp01<\/span>
                                \ne2fsck 1.42<\/span>.9 (<\/span>28<\/span>-Dec-2013)<\/span>
                                \n\u7b2c\u4e00\u6b65: \u68c0\u67e5inode,\u5757,\u548c\u5927\u5c0f
                                \n\u7b2c\u4e8c\u6b65: \u68c0\u67e5\u76ee\u5f55\u7ed3\u6784
                                \n\u7b2c3\u6b65: \u68c0\u67e5\u76ee\u5f55\u8fde\u63a5\u6027
                                \nPass 4<\/span>: Checking reference counts
                                \n\u7b2c5\u6b65: \u68c0\u67e5\u7c07\u6982\u8981\u4fe1\u606f
                                \n\/dev\/webapp\/webapp01: 16<\/span>\/1966080 files (<\/span>0.0<\/span>% non-contiguous)<\/span>, 167447<\/span>\/7864320 blocks<\/p>\n

                                # 3. \u7f29\u51cf\u6587\u4ef6\u7cfb\u7edf\u5230 10G<\/span>
                                \n[<\/span>root@server ~ 19<\/span>:40:31]<\/span># resize2fs \/dev\/webapp\/webapp01 10G<\/span>
                                \nresize2fs 1.42<\/span>.9 (<\/span>28<\/span>-Dec-2013)<\/span>
                                \nResizing the filesystem on \/dev\/webapp\/webapp01 to 2621440<\/span> (<\/span>4k)<\/span> blocks.
                                \nThe filesystem on \/dev\/webapp\/webapp01 is now 2621440<\/span> blocks long.<\/p>\n

                                # 4. \u7f29\u51cf\u903b\u8f91\u5377\u5230 10G<\/span>
                                \n[<\/span>root@server ~ 19<\/span>:40:37]<\/span># lvreduce -L 10G \/dev\/webapp\/webapp01<\/span>
                                \n WARNING: Reducing active logical volume to 10.00<\/span> GiB.
                                \n THIS MAY DESTROY YOUR DATA (<\/span>filesystem etc.)<\/span>
                                \nDo you really want to reduce webapp\/webapp01? [<\/span>y\/n]<\/span>: y
                                \n Size of logical volume webapp\/webapp01 changed from 30.00<\/span> GiB (<\/span>7680<\/span> extents)<\/span> to 10.00<\/span> GiB (<\/span>2560<\/span> extents)<\/span>.
                                \n Logical volume webapp\/webapp01 successfully resized.<\/p>\n

                                # 5. \u6302\u8f7d\u6d4b\u8bd5<\/span>
                                \n[<\/span>root@server ~ 19<\/span>:41:13]<\/span># mount \/dev\/webapp\/webapp01 \/usr\/share\/nginx\/html<\/span>
                                \n[<\/span>root@server ~ 19<\/span>:41:33]<\/span># ls \/usr\/share\/nginx\/html<\/span>
                                \nhost.conf hostname<\/span> hosts hosts.allow hosts.deny lost+found
                                \n[<\/span>root@server ~ 19<\/span>:41:36]<\/span># df -h \/usr\/share\/nginx\/html<\/span>
                                \n\u6587\u4ef6\u7cfb\u7edf \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528% \u6302\u8f7d\u70b9
                                \n\/dev\/mapper\/webapp-webapp01 9<\/span>.8G 37M 9<\/span>.2G 1<\/span>% \/usr\/share\/nginx\/html<\/p>\n

                                \u51cf\u5bb9\u987a\u5e8f\u4e0e\u6269\u5bb9\u6b63\u597d\u76f8\u53cd：\u6269\u5bb9\u662f\u300c\u5148\u6269 LV \u518d\u6269\u6587\u4ef6\u7cfb\u7edf\u300d，\u51cf\u5bb9\u662f\u300c\u5148\u7f29\u6587\u4ef6\u7cfb\u7edf\u518d\u7f29 LV\u300d\u3002\u9053\u7406\u5f88\u7b80\u5355\u2014\u2014\u6587\u4ef6\u7cfb\u7edf\u5fc5\u987b\u5148\u6536\u7f29\u5230\u6bd4 LV \u5c0f（\u6216\u76f8\u7b49），\u518d\u7f29 LV，\u5426\u5219\u6570\u636e\u4f1a\u88ab\u622a\u65ad\u3002<\/p>\n

                                \u8865\u5145\u8bf4\u660e：\u5982\u679c\u6587\u4ef6\u7cfb\u7edf\u662f\u6784\u5efa\u5728\u78c1\u76d8\u5206\u533a（\u800c\u975e LVM \u903b\u8f91\u5377）\u4e0a，\u6269\u5c55\/\u7f29\u51cf\u6587\u4ef6\u7cfb\u7edf\u5bb9\u91cf\u7684\u64cd\u4f5c\u539f\u7406\u76f8\u540c\u3002<\/p>\n

                                \n

                                \u5341\u56db\u3001\u5168\u6587\u5c0f\u7ed3（\u5b9e\u8df5\u5fc3\u5f97）<\/h3>\n

                                1. RAID \u7ea7\u522b\u901f\u67e5\u8868<\/h4>\n\nRAID\u6700\u5c0f\u76d8\u6570\u5bb9\u9519\u5bb9\u91cf\u7387\u7279\u70b9\u5178\u578b\u573a\u666f<\/tr>\n\n\n\n\n\n\n
                                RAID 0<\/td>\n2<\/td>\n\u65e0<\/td>\n100%<\/td>\n\u5feb\u4f46\u8106<\/td>\n\u89c6\u9891\u7f16\u8f91\u3001\u4e34\u65f6\u6570\u636e<\/td>\n<\/tr>\n
                                RAID 1<\/td>\n2<\/td>\n1 \u5757<\/td>\n50%<\/td>\n\u955c\u50cf\u4fdd\u547d<\/td>\n\u5173\u952e\u6570\u636e\u3001\u7cfb\u7edf\u76d8<\/td>\n<\/tr>\n
                                RAID 5<\/td>\n3<\/td>\n1 \u5757<\/td>\n(N-1)\/N<\/td>\n\u6027\u4ef7\u6bd4\u4e4b\u738b<\/td>\n\u6587\u4ef6\/\u6570\u636e\u5e93\u670d\u52a1\u5668<\/td>\n<\/tr>\n
                                RAID 6<\/td>\n4<\/td>\n2 \u5757<\/td>\n(N-2)\/N<\/td>\n\u66f4\u6297\u9020<\/td>\n\u5927\u5bb9\u91cf\u5b58\u6863<\/td>\n<\/tr>\n
                                RAID 10<\/td>\n4<\/td>\n\u591a\u5757<\/td>\n50%<\/td>\n\u53c8\u5feb\u53c8\u7a33<\/td>\n\u6570\u636e\u5e93\u3001\u865a\u62df\u5316<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                2. mdadm \/ LVM \u547d\u4ee4\u901f\u67e5\u8868<\/h4>\n\n\u547d\u4ee4\u4f5c\u7528<\/tr>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                                mdadm –create \/dev\/mdX –level=N –raid-devices=M \/dev\/sd..<\/td>\n\u521b\u5efa\u8f6f RAID<\/td>\n<\/tr>\n
                                mdadm -D \/dev\/mdX \/ cat \/proc\/mdstat<\/td>\n\u67e5\u770b RAID \u72b6\u6001<\/td>\n<\/tr>\n
                                mdadm –add \/dev\/mdX \/dev\/sdX<\/td>\n\u6dfb\u52a0\u70ed\u5907\u76d8<\/td>\n<\/tr>\n
                                mdadm –fail \/dev\/mdX \/dev\/sdX<\/td>\n\u6a21\u62df\u6545\u969c<\/td>\n<\/tr>\n
                                mdadm –remove \/dev\/mdX \/dev\/sdX<\/td>\n\u79fb\u9664\u6545\u969c\u76d8<\/td>\n<\/tr>\n
                                mdadm –grow \/dev\/mdX –raid-devices=N<\/td>\nRAID \u6269\u5bb9<\/td>\n<\/tr>\n
                                mdadm –stop \/ –assemble \/ –zero-superblock<\/td>\n\u505c\u6b62 \/ \u88c5\u914d \/ \u6e05\u5143\u6570\u636e<\/td>\n<\/tr>\n
                                pvcreate \/ pvs \/ pvdisplay<\/td>\n\u5efa PV \/ \u5217 PV \/ \u770b PV \u8be6\u60c5<\/td>\n<\/tr>\n
                                vgcreate \/ vgs \/ vgextend \/ vgreduce<\/td>\n\u5efa VG \/ \u5217 \/ \u6269\u5bb9 \/ \u7f29\u51cf<\/td>\n<\/tr>\n
                                lvcreate \/ lvs \/ lvextend \/ lvreduce<\/td>\n\u5efa LV \/ \u5217 \/ \u6269 LV \/ \u7f29 LV<\/td>\n<\/tr>\n
                                xfs_growfs \/ resize2fs<\/td>\n\u6269 XFS \/ \u6269\u7f29 EXT4<\/td>\n<\/tr>\n
                                pvmove \/dev\/sdX [\u76ee\u6807\u76d8]<\/td>\n\u5728\u7ebf\u642c\u79fb PV \u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                3. \u6838\u5fc3\u8981\u70b9<\/h4>\n
                              • RAID \u4e09\u677f\u65a7：\u6761\u5e26\u5316（\u63d0\u901f）\u3001\u955c\u50cf\/\u6821\u9a8c（\u5197\u4f59）\u3001\u7ec4\u5408（\u6269\u5bb9）\u3002<\/li>\n
                              • \u8f6f RAID \u7528 mdadm：\u6d41\u7a0b\u662f\u300ccreate \u2192 \u683c\u5f0f\u5316\u6302\u8f7d \u2192 \u6545\u969c\u6f14\u7ec3 \u2192 stop + zero-superblock\u300d\u3002<\/li>\n
                              • LVM \u4e09\u7ea7\u7ed3\u6784：\u591a\u4e2a PV \u7ec4 VG，VG \u91cc\u5212 LV，LV \u4e0a\u5efa\u6587\u4ef6\u7cfb\u7edf\u3002<\/li>\n
                              • \u6e05\u7406\u987a\u5e8f\u53cd\u7740\u6765：\u5378\u8f7d \u2192 lvremove \u2192 vgremove \u2192 pvremove\u3002<\/li>\n
                              • \u6269\u5bb9\u4e24\u6b65\u8d70：\u5148\u6269\u5757\u8bbe\u5907（lvextend\/mdadm –grow），\u518d\u6269\u6587\u4ef6\u7cfb\u7edf（xfs_growfs\/resize2fs）\u3002<\/li>\n
                              • \u51cf\u5bb9\u987a\u5e8f\u4e0e\u6269\u5bb9\u76f8\u53cd：\u5148\u7f29\u6587\u4ef6\u7cfb\u7edf，\u518d\u7f29 LV\u3002<\/li>\n

                                4. \u8bb0\u5fc6\u53e3\u8bc0<\/h4>\n
                                  \n
                                • RAID \u9009\u578b：\u5feb\u4e0d\u8981\u547d 0\u3001\u7a33\u4e0d\u6015\u8d35 1\u3001\u53c8\u5feb\u53c8\u7a33\u53c8\u7701 5\u3001\u574f\u4e24\u5757\u4e5f\u4e0d\u6015 6\u3001\u5173\u952e\u4e1a\u52a1\u4e0a 10\u3002<\/li>\n
                                • mdadm \u6545\u969c\u6f14\u7ec3\u5957\u8def：–fail \u5236\u9020\u6545\u969c \u2192 \u70ed\u5907\u76d8\u9876\u66ff\u91cd\u5efa \u2192 –remove \u79fb\u9664\u574f\u76d8\u3002<\/li>\n
                                • LVM \u4e00\u53e5\u5173\u7cfb：PV \u662f\u786c\u76d8\u3001VG \u662f\u6c60\u5b50\u3001LV \u662f\u5206\u533a\u3002<\/li>\n
                                • \u6269\u7f29\u65b9\u5411：\u6269\u5bb9\u300c\u5148\u5757\u540e\u6587\u4ef6\u7cfb\u7edf\u300d，\u51cf\u5bb9\u300c\u5148\u6587\u4ef6\u7cfb\u7edf\u540e\u5757\u300d\u3002<\/li>\n
                                • \u6269\u6587\u4ef6\u7cfb\u7edf\u547d\u4ee4\u5206\u5bb6：XFS \u7528 xfs_growfs，EXT4 \u7528 resize2fs\u3002<\/li>\n<\/ul>\n

                                  5. \u4e09\u4e2a\u6613\u9519\u70b9<\/h4>\n
                                • RAID 0 \u6ca1\u6709\u5197\u4f59，\u4e0d\u80fd –add \u6269\u76d8\u3001\u4e0d\u80fd –fail \u5355\u76d8，\u574f\u4e86\u5c31\u5168\u4e22\u3002<\/li>\n
                                • \u6269\u5bb9\u540e\u4e00\u5b9a\u8981\u518d\u6269\u6587\u4ef6\u7cfb\u7edf，\u5426\u5219\u65b0\u7a7a\u95f4\u7528\u4e0d\u4e0a（lvextend -r \/ mdadm –grow \u540e\u8ddf\u7740 xfs_growfs）\u3002<\/li>\n
                                • XFS \u4e0d\u80fd\u7f29\u51cf，\u53ea\u80fd\u6269；\u8981\u80fd\u7f29\u5f97\u7528 EXT4（\u4e14\u51cf\u5bb9\u5fc5\u987b\u5148\u5378\u8f7d\u3001\u5148 e2fsck \u68c0\u67e5\u3001\u518d\u300c\u5148\u7f29\u6587\u4ef6\u7cfb\u7edf\u540e\u7f29 LV\u300d）\u3002<\/li>\n
                                  \n

                                  \u6301\u7eed\u66f4\u65b0\u4e2d\u2026\u2026\u4e0b\u4e00\u90e8\u5206\u7ee7\u7eed\u5b66\u4e60\u65b0\u7684 Linux \u6280\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                                  \u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7：\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377\u672c\u6587\u4ee5\u5b9e\u8df5\u603b\u7ed3\u7684\u89c6\u89d2，\u8bb0\u5f55 Linux \u547d\u4ee4\u884c\u5b66\u4e60\u4e2d\u300c\u5b58\u50a8\u6280\u672f\u8fdb\u9636\u300d\u4e24\u5927\u4e3b\u9898\u7684\u5b9e\u9645\u64cd\u4f5c\u3001\u8e29\u8fc7\u7684\u5751\u548c\u5fc3\u5f97，\u9002\u5408\u65b0\u624b\u7167\u7740\u52a8\u624b\u7ec3\u4e60\u3002
                                  \n\u793a\u4f8b\u63d0\u793a\u7b26：root \u7528\u6237\u4e3a [rootserver ~]#\u3002
                                  \n\u5168\u6587\u5206\u4e24\u5927\u5757：
                                  \nRAID \u78c1\u76d8\u5197\u4f59\u9635\u5217：\u7528\u591a\u5757\u76d8\u300c\u62fc\u300d\u51fa\u9ad8\u6027\u80fd \/ \u9ad8\u53ef\u9760\u7684\u5b58\u50a8，\u4ee5\u53ca\u7528 mdadm \u7ba1\u7406\u8f6f R<\/p>\n","protected":false},"author":2,"featured_media":108904,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,43,44],"topic":[],"class_list":["post-108914","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-43","tag-44"],"yoast_head":"\n\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7\uff1a\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\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.wsisp.com\/helps\/108914.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7\uff1a\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7：\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377\u672c\u6587\u4ee5\u5b9e\u8df5\u603b\u7ed3\u7684\u89c6\u89d2，\u8bb0\u5f55 Linux \u547d\u4ee4\u884c\u5b66\u4e60\u4e2d\u300c\u5b58\u50a8\u6280\u672f\u8fdb\u9636\u300d\u4e24\u5927\u4e3b\u9898\u7684\u5b9e\u9645\u64cd\u4f5c\u3001\u8e29\u8fc7\u7684\u5751\u548c\u5fc3\u5f97，\u9002\u5408\u65b0\u624b\u7167\u7740\u52a8\u624b\u7ec3\u4e60\u3002 \u793a\u4f8b\u63d0\u793a\u7b26：root \u7528\u6237\u4e3a [rootserver ~]#\u3002 \u5168\u6587\u5206\u4e24\u5927\u5757： RAID \u78c1\u76d8\u5197\u4f59\u9635\u5217：\u7528\u591a\u5757\u76d8\u300c\u62fc\u300d\u51fa\u9ad8\u6027\u80fd \/ \u9ad8\u53ef\u9760\u7684\u5b58\u50a8，\u4ee5\u53ca\u7528 mdadm \u7ba1\u7406\u8f6f R\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/108914.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-22T15:41:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260922154106-6ab2a1921c0a5.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"23 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/108914.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/108914.html\",\"name\":\"\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7\uff1a\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-09-22T15:41:14+00:00\",\"dateModified\":\"2026-09-22T15:41:14+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/108914.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/108914.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/108914.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7\uff1a\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7\uff1a\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","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.wsisp.com\/helps\/108914.html","og_locale":"zh_CN","og_type":"article","og_title":"\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7\uff1a\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7：\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377\u672c\u6587\u4ee5\u5b9e\u8df5\u603b\u7ed3\u7684\u89c6\u89d2，\u8bb0\u5f55 Linux \u547d\u4ee4\u884c\u5b66\u4e60\u4e2d\u300c\u5b58\u50a8\u6280\u672f\u8fdb\u9636\u300d\u4e24\u5927\u4e3b\u9898\u7684\u5b9e\u9645\u64cd\u4f5c\u3001\u8e29\u8fc7\u7684\u5751\u548c\u5fc3\u5f97，\u9002\u5408\u65b0\u624b\u7167\u7740\u52a8\u624b\u7ec3\u4e60\u3002 \u793a\u4f8b\u63d0\u793a\u7b26：root \u7528\u6237\u4e3a [rootserver ~]#\u3002 \u5168\u6587\u5206\u4e24\u5927\u5757： RAID \u78c1\u76d8\u5197\u4f59\u9635\u5217：\u7528\u591a\u5757\u76d8\u300c\u62fc\u300d\u51fa\u9ad8\u6027\u80fd \/ \u9ad8\u53ef\u9760\u7684\u5b58\u50a8，\u4ee5\u53ca\u7528 mdadm \u7ba1\u7406\u8f6f R","og_url":"https:\/\/www.wsisp.com\/helps\/108914.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-09-22T15:41:14+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260922154106-6ab2a1921c0a5.png"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"23 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/108914.html","url":"https:\/\/www.wsisp.com\/helps\/108914.html","name":"\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7\uff1a\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-09-22T15:41:14+00:00","dateModified":"2026-09-22T15:41:14+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/108914.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/108914.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/108914.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"\u522b\u628a\u78c1\u76d8\u5197\u4f59\u548c\u5f39\u6027\u6269\u5bb9\u641e\u6df7\uff1a\u4e00\u7bc7\u8bb2\u900f Linux RAID \u4e0e LVM \u903b\u8f91\u5377"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/108914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=108914"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/108914\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/108904"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=108914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=108914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=108914"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=108914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}