{"id":5471,"date":"2026-06-15T14:01:13","date_gmt":"2026-06-15T14:01:13","guid":{"rendered":"https:\/\/cloudsave.app\/?p=5471"},"modified":"2026-06-15T15:48:40","modified_gmt":"2026-06-15T15:48:40","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e8%99%9a%e6%8b%9f%e6%9c%ba%e5%bf%ab%e7%85%a7%e5%af%b9%e4%ba%8e%e4%ba%8b%e5%8a%a1%e5%9e%8b%e6%95%b0%e6%8d%ae%e5%ba%93%e8%80%8c%e8%a8%80%e5%b9%b6%e4%b8%8d%e5%ae%89%e5%85%a8-d","status":"publish","type":"post","link":"https:\/\/cloudsave.app\/zh-hans\/knowledge-base\/%e4%b8%ba%e4%bb%80%e4%b9%88%e8%99%9a%e6%8b%9f%e6%9c%ba%e5%bf%ab%e7%85%a7%e5%af%b9%e4%ba%8e%e4%ba%8b%e5%8a%a1%e5%9e%8b%e6%95%b0%e6%8d%ae%e5%ba%93%e8%80%8c%e8%a8%80%e5%b9%b6%e4%b8%8d%e5%ae%89%e5%85%a8-d\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u865a\u62df\u673a\u5feb\u7167\u5bf9\u4e8e\u4e8b\u52a1\u578b\u6570\u636e\u5e93\u800c\u8a00\u5e76\u4e0d\u5b89\u5168\uff1aDBA \u6570\u636e\u5b8c\u6574\u6027\u6307\u5357"},"content":{"rendered":"<p>\u5bf9\u4e8e DevOps \u5de5\u7a0b\u5e08\u548c\u7cfb\u7edf\u7ba1\u7406\u5458\u800c\u8a00\uff0c\u865a\u62df\u673a (VM) \u5feb\u7167\u662f\u4e00\u9879\u57fa\u7840\u5de5\u5177\u3002\u5b83\u4eec\u63d0\u4f9b\u4e86\u4e00\u79cd\u5feb\u901f\u3001\u4fbf\u6377\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u8fdb\u884c\u9ad8\u98ce\u9669\u8865\u4e01\u66f4\u65b0\u3001\u91cd\u5927\u914d\u7f6e\u66f4\u6539\u6216\u5e94\u7528\u7a0b\u5e8f\u90e8\u7f72\u4e4b\u524d\u6355\u83b7\u670d\u52a1\u5668\u7684\u72b6\u6001\u3002\u5982\u679c\u51fa\u73b0\u95ee\u9898\uff0c\u53ea\u9700\u51e0\u79d2\u949f\u5373\u53ef\u5b8c\u6210\u56de\u6eda\u3002<\/p>\n<p>\u7136\u800c\uff0c\u5f53\u540c\u6837\u7684\u65b9\u6cd5\u5e94\u7528\u4e8e\u4e8b\u52a1\u578b\u6570\u636e\u5e93\uff08\u5982 PostgreSQL\u3001MySQL\u3001Oracle \u6216 Microsoft SQL Server\uff09\u65f6\uff0cVM \u5feb\u7167\u5c31\u4f1a\u4ece\u201c\u5b89\u5168\u7f51\u201d\u53d8\u6210\u201c\u5b9a\u65f6\u70b8\u5f39\u201d\u3002<\/p>\n<p>\u4f9d\u8d56\u6807\u51c6\u7684\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f (Hypervisor) \u5feb\u7167\u8fdb\u884c\u6570\u636e\u5e93\u5907\u4efd\u662f\u5bfc\u81f4\u6570\u636e\u635f\u574f\u3001\u9875\u9762\u6495\u88c2 (torn pages) \u548c\u4e0d\u53ef\u6062\u590d\u7684\u751f\u4ea7\u73af\u5883\u5b95\u673a\u6700\u5e38\u89c1\u7684\u539f\u56e0\u4e4b\u4e00\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\u4e0e\u6570\u636e\u5e93\u5f15\u64ce\u4e4b\u95f4\u7684\u67b6\u6784\u51b2\u7a81\u3001\u5feb\u7167\u671f\u95f4\u6570\u636e\u635f\u574f\u7684\u673a\u5236\uff0c\u4ee5\u53ca\u5b89\u5168\u5907\u4efd\u865a\u62df\u5316\u6570\u636e\u5e93\u6240\u9700\u7684\u5de5\u7a0b\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<h2>\u67b6\u6784\u51b2\u7a81\uff1a\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f vs. \u6570\u636e\u5e93\u5f15\u64ce<\/h2>\n<p>\u8981\u7406\u89e3\u4e3a\u4ec0\u4e48 VM \u5feb\u7167\u4f1a\u5371\u53ca\u6570\u636e\u5e93\uff0c\u6211\u4eec\u5fc5\u987b\u9996\u5148\u68c0\u67e5\u8fd9\u4e24\u4e2a\u7cfb\u7edf\u5982\u4f55\u7ba1\u7406\u72b6\u6001\u548c I\/O \u64cd\u4f5c\u3002<\/p>\n<h3>\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\u5982\u4f55\u6267\u884c\u5feb\u7167<\/h3>\n<p>\u5f53\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\uff08\u5982 VMware ESXi\u3001Microsoft Hyper-V \u6216 KVM\uff09\u6267\u884c\u5feb\u7167\u65f6\uff0c\u5b83\u5e76\u4e0d\u4f1a\u590d\u5236\u78c1\u76d8\u3002\u76f8\u53cd\uff0c\u5b83\u4f1a\u5c06\u5f53\u524d\u7684\u865a\u62df\u78c1\u76d8\u6587\u4ef6\uff08\u4f8b\u5982 <code>.vmdk<\/code> \u6216 <code>.vhdx<\/code>\uff09\u51bb\u7ed3\u4e3a\u53ea\u8bfb\u72b6\u6001\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u589e\u91cf\u78c1\u76d8\uff08\u5dee\u5f02\u78c1\u76d8\uff09\u3002\u6240\u6709\u540e\u7eed\u7684\u5199\u5165\u64cd\u4f5c\u90fd\u4f1a\u6307\u5411\u8fd9\u4e2a\u589e\u91cf\u78c1\u76d8\u3002<\/p>\n<p>\u5f53\u5220\u9664\u5feb\u7167\u65f6\uff0c\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\u5fc5\u987b\u5c06\u589e\u91cf\u78c1\u76d8\u4e2d\u7684\u6570\u636e\u63d0\u4ea4\uff08\u5408\u5e76\uff09\u56de\u57fa\u7840\u78c1\u76d8\u3002\u6807\u51c6\u5feb\u7167\u5b8c\u5168\u4e0d\u4e86\u89e3\u5ba2\u6237\u64cd\u4f5c\u7cfb\u7edf\u5185\u8fd0\u884c\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u5b83\u4eec\u53ea\u662f\u5728\u5fae\u79d2\u7ea7\u7cbe\u786e\u6355\u83b7\u78c1\u76d8\u5f53\u524d\u7684\u72b6\u6001\u3002<\/p>\n<h3>\u4e8b\u52a1\u578b\u6570\u636e\u5e93\u5982\u4f55\u7ba1\u7406\u72b6\u6001<\/h3>\n<p>\u4e8b\u52a1\u578b\u6570\u636e\u5e93\u662f\u56f4\u7ed5 ACID \u7279\u6027\uff08\u539f\u5b50\u6027\u3001\u4e00\u81f4\u6027\u3001\u9694\u79bb\u6027\u3001\u6301\u4e45\u6027\uff09\u8bbe\u8ba1\u7684\u3002\u4e3a\u4e86\u5728\u4fdd\u6301 ACID \u5408\u89c4\u6027\u7684\u540c\u65f6\u5b9e\u73b0\u9ad8\u6027\u80fd\uff0c\u6570\u636e\u5e93\u4e0d\u4f1a\u7acb\u5373\u5c06\u6bcf\u7b14\u4e8b\u52a1\u76f4\u63a5\u5199\u5165\u78c1\u76d8\u4e0a\u7684\u4e3b\u6570\u636e\u6587\u4ef6\u3002\u76f8\u53cd\uff0c\u5b83\u4eec\u4f7f\u7528\u590d\u6742\u7684\u3001\u591a\u5c42\u67b6\u6784\uff1a<\/p>\n<ol>\n<li><strong>\u7f13\u51b2\u6c60 \/ \u5171\u4eab\u7f13\u51b2\u533a (Buffer Pool \/ Shared Buffers)\uff1a<\/strong> \u6570\u636e\u88ab\u8bfb\u53d6\u5230\u7cfb\u7edf\u5185\u5b58\u4e2d\u5e76\u5728\u5176\u4e2d\u8fdb\u884c\u4fee\u6539\u3002<\/li>\n<li><strong>\u9884\u5199\u5f0f\u65e5\u5fd7 (WAL) \/ \u91cd\u505a\u65e5\u5fd7 (Redo Logs)\uff1a<\/strong> \u66f4\u6539\u4f1a\u6309\u987a\u5e8f\u5199\u5165\u78c1\u76d8\u4e0a\u7684\u9ad8\u5ea6\u4f18\u5316\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0c\u4ee5\u786e\u4fdd\u6301\u4e45\u6027\u3002<\/li>\n<li><strong>\u68c0\u67e5\u70b9 \/ \u60f0\u6027\u5199\u5165 (Checkpoints \/ Lazy Writers)\uff1a<\/strong> \u6570\u636e\u5e93\u4f1a\u5b9a\u671f\u5c06\u5185\u5b58\u4e2d\u4fee\u6539\u8fc7\u7684\uff08\u810f\uff09\u9875\u9762\u5237\u65b0\u5230\u78c1\u76d8\u4e0a\u7684\u5b9e\u9645\u6570\u636e\u6587\u4ef6\u4e2d\u3002<\/li>\n<\/ol>\n<p>\u7531\u4e8e\u8fd9\u79cd\u67b6\u6784\uff0c\u78c1\u76d8\u4e0a\u7684\u7269\u7406\u6570\u636e\u6587\u4ef6\u51e0\u4e4e\u603b\u662f\u4e0e\u6570\u636e\u5e93\u7684\u5b9e\u9645\u72b6\u6001\u4e0d\u540c\u6b65\u3002\u6570\u636e\u5e93\u7684\u771f\u5b9e\u72b6\u6001\u4ec5\u4f5c\u4e3a\u78c1\u76d8\u4e0a\u7684\u6570\u636e\u6587\u4ef6\u3001WAL\/\u91cd\u505a\u65e5\u5fd7\u4ee5\u53ca\u5f53\u524d\u9a7b\u7559\u5728\u5185\u5b58\u4e2d\u7684\u6570\u636e\u7684\u7ec4\u5408\u800c\u5b58\u5728\u3002<\/p>\n<h2>\u5371\u9669\u533a\u57df\uff1aVM \u5feb\u7167\u671f\u95f4\u4f1a\u53d1\u751f\u4ec0\u4e48<\/h2>\n<p>\u5f53\u60a8\u5bf9\u6570\u636e\u5e93\u670d\u52a1\u5668\u8fdb\u884c\u6807\u51c6 VM \u5feb\u7167\u65f6\uff0c\u60a8\u6355\u83b7\u7684\u662f\u4e00\u79cd<strong>\u5d29\u6e83\u4e00\u81f4\u6027 (crash-consistent)<\/strong> \u72b6\u6001\u3002<\/p>\n<h3>\u5d29\u6e83\u4e00\u81f4\u6027 vs. \u5e94\u7528\u7a0b\u5e8f\u4e00\u81f4\u6027<\/h3>\n<p>\u5d29\u6e83\u4e00\u81f4\u6027\u5feb\u7167\u76f8\u5f53\u4e8e\u76f4\u63a5\u62d4\u6389\u7269\u7406\u670d\u52a1\u5668\u7684\u7535\u6e90\u7ebf\u3002\u78c1\u76d8\u72b6\u6001\u88ab\u6355\u83b7\u4e86\uff0c\u4f46\u5185\u5b58\u4e2d\u7684\u5185\u5bb9\u4e22\u5931\u4e86\uff0c\u4e14\u6b63\u5728\u4f20\u8f93\u5230\u5b58\u50a8\u63a7\u5236\u5668\u7684\u6570\u636e\u4e5f\u88ab\u7a81\u7136\u5207\u65ad\u3002<\/p>\n<p>\u867d\u7136\u73b0\u4ee3\u6570\u636e\u5e93\u65e8\u5728\u901a\u8fc7\u91cd\u653e\u9884\u5199\u5f0f\u65e5\u5fd7\u6765\u4ece\u610f\u5916\u65ad\u7535\u4e2d\u6062\u590d\uff0c\u4f46\u5c06\u5d29\u6e83\u6062\u590d\u4f5c\u4e3a\u4e3b\u8981\u7684\u5907\u4efd\u7b56\u7565\u662f\u975e\u5e38\u5371\u9669\u7684\u3002\u5982\u679c\u60a8\u7684\u6570\u636e\u5e93\u8de8\u8d8a\u591a\u4e2a\u865a\u62df\u78c1\u76d8\uff08\u4f8b\u5982\u6570\u636e\u6587\u4ef6\u5728 <code>D \u76d8<\/code>\uff0cWAL \u5728 <code>E \u76d8<\/code>\uff09\uff0c\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\u53ef\u80fd\u65e0\u6cd5\u5728\u5b8c\u5168\u76f8\u540c\u7684\u5fae\u79d2\u5185\u5bf9\u4e24\u4e2a\u78c1\u76d8\u8fdb\u884c\u5feb\u7167\u3002\u5982\u679c WAL \u78c1\u76d8\u5feb\u7167\u7684\u6355\u83b7\u65f6\u95f4\u6bd4\u6570\u636e\u78c1\u76d8\u5feb\u7167\u665a\u4e86\u54ea\u6015\u51e0\u5206\u4e4b\u4e00\u79d2\uff0c\u6570\u636e\u5e93\u5728\u6062\u590d\u65f6\u5c31\u65e0\u6cd5\u534f\u8c03\u5e8f\u5217\u53f7\uff0c\u4ece\u800c\u5bfc\u81f4\u81f4\u547d\u7684\u635f\u574f\u3002<\/p>\n<h3>\u5bf9\u9ad8\u4e8b\u52a1\u7cfb\u7edf\u7684\u201cVM Stun\u201d\u6548\u5e94<\/h3>\n<p>\u5feb\u7167\u521b\u5efa\u8fc7\u7a0b\u2014\u2014\u66f4\u91cd\u8981\u7684\u662f\u5feb\u7167\u5408\u5e76\u8fc7\u7a0b\u2014\u2014\u4f1a\u5bfc\u81f4\u4e00\u79cd\u88ab\u79f0\u4e3a\u201cVM Stun\u201d\uff08\u865a\u62df\u673a\u505c\u987f\uff09\u7684\u73b0\u8c61\u3002<\/p>\n<p>\u4e3a\u4e86\u5b89\u5168\u5730\u5c06 I\/O \u4ece\u57fa\u7840\u78c1\u76d8\u5207\u6362\u5230\u589e\u91cf\u78c1\u76d8\uff0c\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\u5fc5\u987b\u77ed\u6682\u5730\u6682\u505c\uff08stun\uff09\u865a\u62df\u673a\u3002\u5bf9\u4e8e\u8d1f\u8f7d\u8f83\u8f7b\u7684 Web \u670d\u52a1\u5668\uff0c\u8fd9\u79cd\u505c\u987f\u53ef\u80fd\u6301\u7eed 10-50 \u6beb\u79d2\uff0c\u51e0\u4e4e\u65e0\u6cd5\u5bdf\u89c9\u3002\u7136\u800c\uff0c\u5bf9\u4e8e\u5177\u6709\u6d77\u91cf I\/O \u7684\u9ad8\u541e\u5410\u91cf\u6570\u636e\u5e93\uff0c\u5408\u5e76\u5927\u578b\u589e\u91cf\u78c1\u76d8\u53ef\u80fd\u4f1a\u5bfc\u81f4\u865a\u62df\u673a\u505c\u987f\u6570\u79d2\u3002<\/p>\n<p>\u5728 VM \u505c\u987f\u671f\u95f4\uff1a<br \/>\n* \u7f51\u7edc\u8fde\u63a5\u4e2d\u65ad\uff0c\u5bfc\u81f4\u5e94\u7528\u7a0b\u5e8f\u8d85\u65f6\u3002<br \/>\n* \u9ad8\u53ef\u7528\u6027\u96c6\u7fa4\uff08\u5982 SQL Server Always On\u3001PostgreSQL Patroni \u6216 MySQL Galera\uff09\u4f1a\u9519\u8fc7\u5fc3\u8df3\u68c0\u67e5\u3002<br \/>\n* \u96c6\u7fa4\u53ef\u80fd\u4f1a\u8ba4\u4e3a\u505c\u987f\u7684\u8282\u70b9\u5df2\u6b7b\uff0c\u4ece\u800c\u89e6\u53d1\u4e0d\u5fc5\u8981\u4e14\u5177\u6709\u7834\u574f\u6027\u7684\u6545\u969c\u8f6c\u79fb\uff08\u8111\u88c2\u573a\u666f\uff09\u3002<\/p>\n<h3>\u9875\u9762\u6495\u88c2\u4e0e I\/O \u4e0d\u5bf9\u9f50<\/h3>\n<p>\u6570\u636e\u5e93\u5f15\u64ce\u901a\u5e38\u4ee5\u7279\u5b9a\u7684\u9875\u9762\u5927\u5c0f\uff08\u4f8b\u5982 PostgreSQL \u548c SQL Server \u4e3a 8KB\uff0cInnoDB \u4e3a 16KB\uff09\u5199\u5165\u6570\u636e\u3002\u7136\u800c\uff0c\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\u548c\u5b58\u50a8\u9635\u5217\u4ee5\u66f4\u5c0f\u7684\u5757\uff08\u4f8b\u5982 4KB \u6216 512 \u5b57\u8282\uff09\u5904\u7406 I\/O\u3002<\/p>\n<p>\u5982\u679c\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\u6070\u597d\u5728\u6570\u636e\u5e93\u5199\u5165 8KB \u9875\u9762\u65f6\u8fdb\u884c\u5feb\u7167\uff0c\u5feb\u7167\u53ef\u80fd\u4f1a\u6355\u83b7\u65b0\u6570\u636e\u7684\u524d 4KB \u548c\u65e7\u6570\u636e\u7684\u540e 4KB\u3002\u8fd9\u4f1a\u4ea7\u751f<strong>\u9875\u9762\u6495\u88c2 (torn page)<\/strong>\u3002\u5f53\u60a8\u5c1d\u8bd5\u6062\u590d\u5feb\u7167\u65f6\uff0c\u6570\u636e\u5e93\u8bfb\u53d6\u8be5\u9875\u9762\u4f1a\u6821\u9a8c\u548c\u9a8c\u8bc1\u5931\u8d25\uff0c\u5e76\u5c06\u6570\u636e\u5e93\u6807\u8bb0\u4e3a\u635f\u574f\u3002<\/p>\n<h2>\u7279\u5b9a\u6570\u636e\u5e93\u5f15\u64ce\u7684\u73b0\u5b9e\u540e\u679c<\/h2>\n<p>\u4e0d\u540c\u7684\u6570\u636e\u5e93\u5f15\u64ce\u5bf9\u5d29\u6e83\u4e00\u81f4\u6027\u5feb\u7167\u7684\u53cd\u5e94\u5404\u4e0d\u76f8\u540c\uff0c\u4f46\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u6ca1\u6709\u54ea\u79cd\u5f15\u64ce\u80fd\u4f18\u96c5\u5730\u5904\u7406\u8fd9\u79cd\u60c5\u51b5\u3002<\/p>\n<ul>\n<li><strong>PostgreSQL\uff1a<\/strong> PostgreSQL \u4e25\u91cd\u4f9d\u8d56 <code>pg_wal<\/code> \u76ee\u5f55\u3002\u5982\u679c\u5feb\u7167\u6355\u83b7\u7684\u6570\u636e\u76ee\u5f55 (<code>$PGDATA<\/code>) \u548c WAL \u4e0d\u540c\u6b65\uff0cPostgreSQL \u5c06\u65e0\u6cd5\u542f\u52a8\uff0c\u5e76\u629b\u51fa <code>PANIC: could not locate a valid checkpoint record<\/code> \u9519\u8bef\u3002<\/li>\n<li><strong>MySQL\/InnoDB\uff1a<\/strong> InnoDB \u4f7f\u7528\u53cc\u5199\u7f13\u51b2\u533a (doublewrite buffer) \u6765\u9632\u6b62\u9875\u9762\u6495\u88c2\uff0c\u8fd9\u63d0\u4f9b\u4e86\u4e00\u5b9a\u7684\u5d29\u6e83\u4e00\u81f4\u6027\u4fdd\u62a4\u3002\u7136\u800c\uff0c\u5982\u679c <code>ibdata1<\/code> \u6587\u4ef6\u548c <code>ib_logfile<\/code> \u6355\u83b7\u65f6\u4e0d\u540c\u6b65\uff0cInnoDB \u5f15\u64ce\u5728\u6062\u590d\u65f6\u5c06\u4f1a\u5d29\u6e83\u3002<\/li>\n<li><strong>Microsoft SQL Server\uff1a<\/strong> SQL Server \u5bf9 I\/O \u51bb\u7ed3\u975e\u5e38\u654f\u611f\u3002\u5982\u679c\u6ca1\u6709\u9002\u5f53\u7684 VSS (\u5377\u5f71\u590d\u5236\u670d\u52a1) \u96c6\u6210\uff0c\u4ece\u6807\u51c6 VM \u5feb\u7167\u6062\u590d SQL Server \u901a\u5e38\u4f1a\u5bfc\u81f4\u6570\u636e\u5e93\u5904\u4e8e\u201c\u53ef\u7591\u201d\u72b6\u6001\u5e76\u7834\u574f\u65e5\u5fd7\u94fe\uff0c\u4ece\u800c\u6467\u6bc1\u60a8\u7684\u65f6\u95f4\u70b9\u6062\u590d (PITR) \u80fd\u529b\u3002<\/li>\n<\/ul>\n<h2>\u5b89\u5168\u5907\u4efd\u865a\u62df\u5316\u6570\u636e\u5e93\u7684\u6700\u4f73\u5b9e\u8df5<\/h2>\n<p>\u4e3a\u4e86\u4fdd\u62a4\u4e8b\u52a1\u578b\u6570\u636e\u5e93\uff0c\u60a8\u5fc5\u987b\u4ece\u5d29\u6e83\u4e00\u81f4\u6027\u5907\u4efd\u8f6c\u5411<strong>\u5e94\u7528\u7a0b\u5e8f\u4e00\u81f4\u6027 (application-consistent)<\/strong> \u5907\u4efd\u3002\u8fd9\u8981\u6c42\u5907\u4efd\u673a\u5236\u4e0e\u6570\u636e\u5e93\u5f15\u64ce\u8fdb\u884c\u901a\u4fe1\uff0c\u5f3a\u5236\u5176\u5728\u8fdb\u884c\u5feb\u7167\u65f6\u5c06\u5185\u5b58\u5237\u65b0\u5230\u78c1\u76d8\u5e76\u6682\u65f6\u6682\u505c I\/O \u64cd\u4f5c\u3002<\/p>\n<h3>1. \u5229\u7528\u5e94\u7528\u7a0b\u5e8f\u611f\u77e5\u9759\u9ed8 (VSS \u548c fsfreeze)<\/h3>\n<p><strong>\u5bf9\u4e8e Windows (SQL Server)\uff1a<\/strong><br \/>\n\u59cb\u7ec8\u786e\u4fdd\u60a8\u7684\u5907\u4efd\u89e3\u51b3\u65b9\u6848\u5229\u7528 Microsoft \u5377\u5f71\u590d\u5236\u670d\u52a1 (VSS)\u3002\u5f53\u89e6\u53d1 VSS \u611f\u77e5\u5907\u4efd\u65f6\uff0cSQL Server VSS Writer \u4f1a\u51bb\u7ed3\u6570\u636e\u5e93 I\/O\uff0c\u5c06\u6302\u8d77\u7684\u4e8b\u52a1\u5237\u65b0\u5230\u78c1\u76d8\uff0c\u5e76\u786e\u4fdd\u5feb\u7167\u5b8c\u5168\u7b26\u5408\u5e94\u7528\u7a0b\u5e8f\u4e00\u81f4\u6027\u3002<\/p>\n<p><strong>\u5bf9\u4e8e Linux (PostgreSQL \/ MySQL)\uff1a<\/strong><br \/>\nLinux \u6ca1\u6709 VSS \u7684\u539f\u751f\u7b49\u6548\u529f\u80fd\u3002\u8981\u5b9e\u73b0\u5e94\u7528\u7a0b\u5e8f\u4e00\u81f4\u6027\uff0c\u60a8\u5fc5\u987b\u7ed3\u5408\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\u7684\u5ba2\u6237\u673a\u5de5\u5177\uff08\u5982 VMware Tools\uff09\u4f7f\u7528\u9884\u51bb\u7ed3 (pre-freeze) \u548c\u540e\u89e3\u51bb (post-thaw) \u811a\u672c\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u9002\u7528\u4e8e PostgreSQL 15+ \u7684 VMware <code>pre-freeze-script<\/code> \u793a\u4f8b\uff0c\u53ef\u5b89\u5168\u5730\u4e3a\u5feb\u7167\u51c6\u5907\u6570\u636e\u5e93\uff1a<\/p>\n<pre><code class=\"language-bash\">#!\/bin\/bash\n# \/usr\/sbin\/pre-freeze-script\n# \u786e\u4fdd\u6b64\u811a\u672c\u5177\u6709\u53ef\u6267\u884c\u6743\u9650 (chmod +x)\n\n# 1. \u901a\u77e5 PostgreSQL \u51c6\u5907\u5907\u4efd\nsu - postgres -c \"psql -c \"SELECT pg_backup_start('vm_snapshot', true);\"\"\n\n# 2. \u5c06\u6587\u4ef6\u7cfb\u7edf\u7f13\u51b2\u533a\u5237\u65b0\u5230\u78c1\u76d8\nsync\n\n# 3. \u51bb\u7ed3\u6587\u4ef6\u7cfb\u7edf\uff08\u5047\u8bbe\u6570\u636e\u4f4d\u4e8e \/var\/lib\/pgsql\uff09\nfsfreeze -f \/var\/lib\/pgsql\n<\/code><\/pre>\n<p>\u4ee5\u53ca\u76f8\u5e94\u7684 <code>post-thaw-script<\/code> \u4ee5\u6062\u590d\u64cd\u4f5c\uff1a<\/p>\n<pre><code class=\"language-bash\">#!\/bin\/bash\n# \/usr\/sbin\/post-thaw-script\n\n# 1. \u89e3\u51bb\u6587\u4ef6\u7cfb\u7edf\nfsfreeze -u \/var\/lib\/pgsql\n\n# 2. \u901a\u77e5 PostgreSQL \u5907\u4efd\u5b8c\u6210\nsu - postgres -c \"psql -c \"SELECT pg_backup_stop();\"\"\n<\/code><\/pre>\n<h3>2. \u4f7f\u7528\u539f\u751f\u6570\u636e\u5e93\u5907\u4efd\u5de5\u5177<\/h3>\n<p>\u867d\u7136\u5e94\u7528\u7a0b\u5e8f\u4e00\u81f4\u6027\u5feb\u7167\u4f18\u4e8e\u6807\u51c6\u5feb\u7167\uff0c\u4f46\u5b83\u4eec\u4ecd\u7136\u5b58\u5728 VM \u505c\u987f\u7684\u98ce\u9669\u3002\u6570\u636e\u5e93\u5907\u4efd\u6700\u5b89\u5168\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u72ec\u7acb\u4e8e\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\u8fd0\u884c\u7684\u539f\u751f\u6d41\u5f0f\u5907\u4efd\u5de5\u5177\u3002<\/p>\n<p><strong>PostgreSQL (pg_basebackup)\uff1a<\/strong><\/p>\n<pre><code class=\"language-bash\">pg_basebackup -h localhost -U replication_user -D \/mnt\/backups\/pg_backup -Ft -z -P\n<\/code><\/pre>\n<p><strong>MySQL\/MariaDB (Percona XtraBackup \/ Mariabackup)\uff1a<\/strong><br \/>\n\u8fd9\u4e9b\u5de5\u5177\u901a\u8fc7\u590d\u5236\u6570\u636e\u6587\u4ef6\u5e76\u540c\u65f6\u8ddf\u8e2a\u91cd\u505a\u65e5\u5fd7\u4e2d\u7684\u66f4\u6539\uff0c\u8fdb\u884c\u70ed\u5907\u4efd\u4e14\u4e0d\u4f1a\u963b\u585e\u64cd\u4f5c\u3002<\/p>\n<pre><code class=\"language-bash\">mariabackup --backup --target-dir=\/mnt\/backups\/mysql_backup --user=root --password=SecurePass\n<\/code><\/pre>\n<p><strong>SQL Server (T-SQL)\uff1a<\/strong><\/p>\n<pre><code class=\"language-sql\">BACKUP DATABASE [ProductionDB] \nTO DISK = N'Z:BackupsProductionDB.bak' \nWITH NOFORMAT, NOINIT, NAME = N'ProductionDB-Full Backup', \nSKIP, NOREWIND, NOUNLOAD, COMPRESSION, STATS = 10;\nGO\n<\/code><\/pre>\n<h3>3. \u901a\u8fc7\u65e5\u5fd7\u5f52\u6863\u5b9e\u73b0\u65f6\u95f4\u70b9\u6062\u590d (PITR)<\/h3>\n<p>\u6bcf\u65e5\u5feb\u7167\u6216\u5168\u91cf\u5907\u4efd\u53ea\u80fd\u4fdd\u62a4\u60a8\u5230\u5907\u4efd\u5b8c\u6210\u7684\u90a3\u4e00\u523b\u3002\u5982\u679c\u60a8\u7684\u6570\u636e\u5e93\u5728\u4e0b\u5348 4:00 \u5d29\u6e83\uff0c\u800c\u4e0a\u4e00\u6b21\u5feb\u7167\u662f\u5728\u51cc\u6668 2:00\uff0c\u60a8\u5c06\u4e22\u5931 14 \u5c0f\u65f6\u7684\u4e8b\u52a1\u6570\u636e\u3002<\/p>\n<p>\u4e3a\u4e86\u5b9e\u73b0\u771f\u6b63\u7684\u4f01\u4e1a\u7ea7\u5f39\u6027\uff0c\u60a8\u5fc5\u987b\u5c06\u5b8c\u6574\u7684\u5e94\u7528\u7a0b\u5e8f\u4e00\u81f4\u6027\u5907\u4efd\u4e0e\u6301\u7eed\u7684\u65e5\u5fd7\u5f52\u6863\uff08\u6bcf\u9694\u51e0\u5206\u949f\u5907\u4efd\u4e00\u6b21 WAL\u3001\u91cd\u505a\u65e5\u5fd7\u6216\u4e8b\u52a1\u65e5\u5fd7\uff09\u76f8\u7ed3\u5408\u3002\u8fd9\u5141\u8bb8\u6570\u636e\u5e93\u7ba1\u7406\u5458\u5c06\u6570\u636e\u5e93\u6062\u590d\u5230\u707e\u96be\u53d1\u751f\u524d\u7684\u7279\u5b9a\u5206\u949f\uff0c\u751a\u81f3\u7279\u5b9a\u7684\u4e8b\u52a1 ID\u3002<\/p>\n<h2>\u4f7f\u7528 CloudSave \u7684\u4f01\u4e1a\u7ea7\u5907\u4efd\u7b56\u7565<\/h2>\n<p>\u5728\u6570\u5341\u53f0\u6570\u636e\u5e93\u670d\u52a1\u5668\u4e0a\u7ba1\u7406\u81ea\u5b9a\u4e49\u7684\u9884\u51bb\u7ed3\u811a\u672c\u3001\u539f\u751f\u8f6c\u50a8\u7684 cron \u4f5c\u4e1a\u4ee5\u53ca\u65e5\u5fd7\u4f20\u8f93\uff0c\u5bf9\u4e8e DevOps \u56e2\u961f\u6765\u8bf4\u662f\u4e00\u573a\u8fd0\u7ef4\u5669\u68a6\u3002\u8fd9\u5c31\u662f\u50cf CloudSave \u8fd9\u6837\u7684\u4f01\u4e1a\u7ea7\u5e73\u53f0\u53d8\u5f97\u81f3\u5173\u91cd\u8981\u7684\u539f\u56e0\u3002<\/p>\n<p>CloudSave \u5f25\u5408\u4e86\u865a\u62df\u5316\u4e0e\u6570\u636e\u5e93\u67b6\u6784\u4e4b\u95f4\u7684\u9e3f\u6c9f\u3002CloudSave \u4e0d\u4f9d\u8d56\u76f2\u76ee\u7684\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\u5feb\u7167\uff0c\u800c\u662f\u5229\u7528\u4e0e SQL Server\u3001PostgreSQL\u3001MySQL \u548c Oracle \u539f\u751f\u96c6\u6210\u7684\u5e94\u7528\u7a0b\u5e8f\u611f\u77e5\u4ee3\u7406\u3002<\/p>\n<p>\u5f53 CloudSave \u542f\u52a8\u5907\u4efd\u65f6\uff1a<br \/>\n1. \u5b83\u901a\u8fc7\u539f\u751f API\uff08\u5982 Windows \u7684 VSS \u6216 Linux \u7684\u539f\u751f WAL \u6d41\uff09\u76f4\u63a5\u4e0e\u6570\u636e\u5e93\u5f15\u64ce\u901a\u4fe1\u3002<br \/>\n2. \u5b83\u534f\u8c03\u5c06\u5185\u5b58\u7f13\u51b2\u533a\u5237\u65b0\u5230\u78c1\u76d8\uff0c\u800c\u4e0d\u4f1a\u5bfc\u81f4\u7834\u574f\u6027\u7684 VM \u505c\u987f\u3002<br \/>\n3. \u5b83\u5b89\u5168\u5730\u6355\u83b7\u6570\u636e\u6587\u4ef6\u5e76\u81ea\u52a8\u7ba1\u7406\u4e8b\u52a1\u65e5\u5fd7\u622a\u65ad\u3002<br \/>\n4. \u5b83\u6301\u7eed\u5907\u4efd\u4e8b\u52a1\u65e5\u5fd7\uff0c\u53ea\u9700\u70b9\u51fb\u51e0\u4e0b\u5373\u53ef\u5b9e\u73b0\u7ec6\u7c92\u5ea6\u7684\u65f6\u95f4\u70b9\u6062\u590d (PITR)\u3002<\/p>\n<p>\u901a\u8fc7\u5c06\u5e94\u7528\u7a0b\u5e8f\u4e00\u81f4\u6027\u7684\u590d\u6742\u6027\u5378\u8f7d\u7ed9 CloudSave\uff0c\u6570\u636e\u5e93\u7ba1\u7406\u5458\u548c\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u4fdd\u8bc1\u6570\u636e\u5b8c\u6574\u6027\uff0c\u800c\u65e0\u9700\u727a\u7272\u751f\u4ea7\u96c6\u7fa4\u7684\u6027\u80fd\u6216\u53ef\u7528\u6027\u3002<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u865a\u62df\u673a\u5feb\u7167\u662f\u57fa\u7840\u8bbe\u65bd\u7ba1\u7406\u7684\u7edd\u4f73\u5de5\u5177\uff0c\u4f46\u5b83\u4eec\u4ece\u6839\u672c\u4e0a\u4e0e\u4e8b\u52a1\u578b\u6570\u636e\u5e93\u7684 ACID 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