{"id":579,"date":"2012-06-11T23:19:17","date_gmt":"2012-06-11T15:19:17","guid":{"rendered":"http:\/\/www.dogeye.net\/?p=579"},"modified":"2012-06-11T23:19:17","modified_gmt":"2012-06-11T15:19:17","slug":"kvm%e4%bd%a0%e9%97%ae%e6%88%91%e7%ad%94-faq-%e5%9b%9b","status":"publish","type":"post","link":"https:\/\/ykyi.net\/?p=579","title":{"rendered":"KVM\u4f60\u95ee\u6211\u7b54 FAQ (\u56db)"},"content":{"rendered":"

KVM\u548c<\/span>Xen<\/span>\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/span><\/strong><\/p>\n

Xen\u662f\u4e00\u4e2a\u5916\u90e8\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f<\/span>(External hypervisor)<\/span>\uff0c\u5b83\u627f\u62c5\u4e86\u7ba1\u7406\u7269\u7406\u673a\u5668\u7684\u4efb\u52a1\u5e76\u628a\u7269\u7406\u673a\u5668\u7684\u5404\u79cd\u8d44\u6e90\u5206\u914d\u7ed9\u5ba2\u6237\u673a\u3002\u4e0e<\/span>Xen<\/span>\u4e0d\u540c\uff0c<\/span>KVM<\/span>\u672c\u8eab\u662f<\/span>Linux<\/span>\u5185\u6838\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u4f7f\u7528<\/span>Linux<\/span>\u81ea\u5df1\u7684\u8fdb\u7a0b\u8c03\u5ea6\u548c\u5185\u5b58\u7ba1\u7406\u3002\u8fd9\u5c31\u5929\u7136\u51b3\u5b9a\u4e86<\/span>KVM<\/span>\u6613\u4e8e\u4f7f\u7528\u5e76\u4e8e\u4f53\u79ef\u4f1a\u5f88\u5c0f\u3002\u4ec5\u7ba1\u4f53\u79ef\u5c0f\uff0c\u4f46<\/span>KVM<\/span>\u7684\u529f\u80fd\u786e\u4e0d\u5c11\u3002\u6bd4\u5982\uff0c<\/span>KVM<\/span>\u53ef\u4ee5\u628a\u5ba2\u6237\u673a\u4ece\u5185\u5b58\u4e2d\u5151\u6362\u5230\u7269\u7406\u78c1\u76d8\u4e0a\uff0c\u5982\u540c<\/span>swap<\/span>\u666e\u901a\u8fdb\u7a0b\u4e00\u6837\u91ca\u653e<\/span>RAM<\/span>\u3002<\/span>KVM<\/span>\u76ee\u524d\u53ea\u5728\u63d0\u4f9b\u652f\u6301\u786c\u4ef6\u865a\u62df\u5316\u7684<\/span>x86<\/span>\u673a\u5668\u4e0a\u8fd0\u884c\uff08\u5982<\/span>vt\/svm<\/span>\u6307\u4ee4\u96c6\uff09\u3002\u4ece\u8fd9\u8fd9\u65b9\u9762\u8bb2\uff0c<\/span>Xen<\/span>\u901a\u8fc7\u4fee\u6539\u5ba2\u6237\u673a\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5145\u8bb8\u865a\u62df\u673a\u8fd0\u884c\u5728\u6ca1\u6709\u786c\u4ef6\u865a\u62df\u5316\u6280\u672f\u7684<\/span>x86<\/span>\u5e73\u53f0\u4e0a\u8fd0\u884c\u3002\u8fd9\u79cd\u865a\u62df\u5316\u6280\u672f\u79f0\u4e4b\u4e3a\u51c6\u865a\u62df\u5316<\/span>paravirtualization<\/span>\uff0c\u53c2\u89c1\u53e6\u4e00\u8d34\uff1a<\/span>Linux\u7684\u865a\u62df\u5316\u6280\u672f<\/span><\/a>\u3002KVM<\/span>\u5728<\/span>CPU<\/span>\u7ea7\u522b\u4e0d\u652f\u6301<\/span>paravirtualization<\/span>\uff0c\u4f46\u4e3a\u4e86\u6307\u9ad8<\/span>I\/O<\/span>\u6027\u80fd\uff0c\u4f1a\u5bf9\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f\u652f\u6301\u51c6\u865a\u62df\u5316\u3002<\/span><\/p>\n

KVM\u548c<\/span>Vmware<\/span>\u6709\u4ec0\u4e48\u533a\u522b\u5462\uff1f<\/span><\/strong><\/p>\n

VMware\u662f\u4e00\u4e2a\u5546\u7528\u4e13\u7528\u865a\u62df\u5316\u4ea7\u54c1\uff0c<\/span>KVM<\/span>\u662f\u5728<\/span>GPL<\/span>\u8bb8\u53ef\u8bc1\u4e0b\u53d1\u5e03\u7684\u81ea\u7531\u8f6f\u4ef6\u3002<\/span><\/p>\n

KVM\u548c<\/span>QEMU<\/span>\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/span><\/strong><\/p>\n

QEMU\u662f\u6a21\u62df\u5668\u3002\u53c2\u89c1<\/span>Linux\u7684\u865a\u62df\u5316\u6280\u672f <\/span>KVM & QEMU<\/span><\/a> \u3002<\/p>\n

KVM\u6709<\/span>windows<\/span>\u4e0b\u7684\u79fb\u79fb\u690d\u7248\u672c\u5417\uff1f<\/span><\/strong><\/p>\n

\u6ca1\u6709\u5b98\u65b9\u7684\u79fb\u690d\u3002Kazushi Takahashi<\/span>\u53d1\u8d77\u4e86\u4e00\u4e2a\u9879\u76ee\uff0c\u628a<\/span>KVM<\/span>\u79fb\u690d\u5230<\/span>windows<\/span>\u64cd\u4f5c\u7cfb\u7edf\uff0c\u8fd9\u4e2a\u9879\u76ee\u540d\u4e3a<\/span>WinKVM<\/span>\uff0c\u8fd9\u662f\u4ed6\u7684\u5b98\u65b9\u7f51\u7ad9<\/span>WinKVM<\/a>\u3002<\/p>\n

\u53ef\u53c2\u89c1\u53e6\u4e00\u7bc7\u6587\u7ae0 http:\/\/ykyi.net\/2012\/06\/595\/<\/a>\u3002<\/p>\n

\u9700\u8981\u600e\u6837\u7684Linux<\/span>\u5185\u6838\u7248\u672c\u624d\u80fd\u8fd0\u884c<\/span>KVM<\/span>\u5462\uff1f<\/span><\/strong><\/p>\n

\u8fd9\u53d6\u51b3\u4e8e\u4f60\u8981\u8fd0\u884c\u54ea\u4e2a\u7248\u672c\u7684KVM<\/span>\u3002\u6700\u8fd1\u53d1\u5e03\u7684<\/span>KVM<\/span>\u5e94\u8be5\u53ef\u4ee5\u5728\u4efb\u4f55<\/span>2.6.17<\/span>\u4ee5\u540e\u7684<\/span>kernel<\/span>\u7248\u672c\u4e0b\u8fd0\u884c\u3002\u4f46\u5f88\u65e7\u7248\u672c\u7684<\/span>KVM<\/span>\u53ea\u80fd\u5728\u4e00\u4e9b\u65e7\u7684\u5185\u6838\u4e0b\u8fd0\u884c\u3002<\/span><\/p>\n

\u9700\u8981\u591a\u5c11\u5185\u5b58\u8fd0\u884cKVM<\/span>\u5462\uff1f<\/span><\/strong><\/p>\n

\u6700\u5c0f\u5e94\u8be51GB<\/span>\u3002\u55ef\uff0c\u4f60\u5e94\u8be5\u6709\u8db3\u591f\u591a\u7684\u5185\u5b58\u8fd0\u884c\u4f60\u5c06\u8981\u8fd0\u884c\u7684\u5ba2\u6237\u673a\uff0c\u53e6\u5916\u5f53\u7136\u8fd8\u9700\u8981\u5185\u5b58\u8fd0\u884c<\/span>host<\/span>\u673a\u3002<\/span><\/p>\n

\u662f\u5426\u652f\u6301\u5bf9\u5ba2\u6237\u673a\u52a8\u6001\u5206\u914d\u5185\u5b58\uff1f<\/strong><\/p>\n

\u8fd9\u4e2a\u95ee\u9898\u6709\u70b9\u5927\uff01
\n\t1. KVM\u5728\u5ba2\u6237\u673a\u5c1d\u8bd5\u7533\u8bf7\u5185\u5b58\u65f6\u5206\u914d\u5185\u5b58\u7ed9\u5b83\u4eec\u3002\u4e00\u4f46\u5185\u5b58\u5206\u914d\u7ed3\u675f\u4e4b\u540e\uff0c<\/span>KVM<\/span>\u5219\u8ba4\u4e3a\u5185\u5b58\u5206\u7ed9\u67d0\u5ba2\u6237\u673a\u4e86\u3002\u6709\u4e00\u4e9b\u64cd\u4f5c\u7cfb\u7edf\uff0c\u6bd4\u5982<\/span>Microsoft Windows<\/span>\u4f1a\u5728\u542f\u52a8\u9636\u6bb5\u628a\u6240\u6709\u7684\u5185\u5b58\u90fd\u6e05\u96f6\u3002\u8fd9\u4e9b\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u7acb\u5373\u4f7f\u6709\u6216\u7ba1\u7406\u6240\u6709\u7684\u5185\u5b58\u3002<\/span>
\n\t2. \u800c\u53e6\u4e00\u4e9b\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5b9e\u9645\u4e0a\u76ee\u524d\u53ea\u6709<\/span>Linux<\/span>\uff0c\u5b83\u4eec\u6709\u4e00\u4e2a\u79f0\u4e3a<\/span>balloon driver<\/span>\u7684\u4e1c\u4e1c\uff0c\u5982\u679c<\/span>host<\/span>\u5206\u914d\u4e86\u4e00\u4e9b\u5185\u5b58\u4f46\u5ba2\u6237\u673a\u5c06\u6765\u4e0d\u518d\u4f7f\u7528\u4e86\uff0c\u5b83\u5c31\u4f1a\u8ba9<\/span>host<\/span>\u628a\u5b83\u4eec\u91ca\u653e\u6389\u3002<\/span>Ballooning<\/span>\u662f\u901a\u8fc7<\/span>balloon monitor command<\/a>\u5728host<\/span>\u673a\u4e2d\u88ab\u63a7\u5236\u7684\u3002<\/span>
\n\t3. \u6709\u4e00\u4e9b<\/span>host<\/span>\u673a\uff0c<\/span>(<\/span>\u76ee\u524d\u53ea\u6709<\/span>RHEL5.4\/CentOS 5.4)<\/span>\u6709\u4e00\u79cd\u7279\u6027\u79f0\u4e3a<\/span>KSM(Kernel Sharedpage Merging)<\/span>\u3002\u8fd9\u79cd\u7279\u6027\u53ef\u4ee5\u628a\u5b8c\u5168\u76f8\u9762\u7684\u5185\u5b58\u9875\u9762\u5408\u5e76\uff0c\u8fd9\u9700\u8981<\/span>host<\/span>\u673a\u7684\u652f\u6301\uff0c\u53e6\u5916<\/span>KVM<\/span>\u7684\u7248\u672c\u8981\u8db3\u591f\u65b0\u3002\u800c\u6709\u4e00\u4e9b\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5982<\/span>windows<\/span>\uff0c\u4f1a\u628a\u91ca\u653e\u7684\u5185\u5b58\u6e05\u96f6\uff0c\u8fd9\u4e9b\u9875\u9762\u81ea\u7136\u5c31\u4f1a\u5408\u5e76\u4e86\uff08<\/span>such pages are trivially collapsed<\/span>\u4e0d\u77e5\u9053\u6709\u6ca1\u6709\u8bd1\u5bf9\uff09\u3002<\/span>Ksmctl<\/span>\u547d\u4ee4\u7528\u6765\u5f00\u542f<\/span>KSM<\/span>\u3002\u53e6\u5916\u4e00\u79cd\u65b9\u6cd5\u662f\uff0c<\/span>Fedora 12<\/span>\u4e2d\u7684<\/span>ksmtuned<\/span>\u670d\u52a1\u53ef\u4ee5\u6839\u636e\u53ef\u7528\u7684\u7a7a\u95f2\u5185\u5b58\u52a8\u6001\u7684\u8c03\u6574<\/span>KSM<\/span>\u7684\u5408\u5e76\u7b56\u7565\u662f\u5426\u79ef\u6781\u8fd8\u662f\u4fdd\u5b88\u3002<\/span><\/p>\n

\u6211\u53ef\u4ee5\u5728<\/span>KVM<\/span>\u865a\u62df\u673a\u4e2d\u5b89\u88c5\u54ea\u4e9b\u64cd\u4f5c\u7cfb\u7edf\u5462\uff1f<\/span><\/strong><\/p>\n

\u652f\u6301\u5f88\u591a\u79cd\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4f60\u53ef\u4ee5\u53c2\u770bGuest Support Status<\/a> \u9875\u9762\u3002\u8bf7\u6ce8\u610f\u5df2\u7ecf\u6709\u4e00\u4e9bLinux<\/span>\u53d1\u884c\u7248\u5728<\/span>Intel<\/span>\u5904\u7406\u5668\u4e0a\u4f1a\u5728\u542f\u52a8\u9636\u6bb5\u6b7b\u673a\uff0c\u89e3\u51b3\u529e\u6cd5\u662f\u5728<\/span>grub<\/span>\u91cc\u7981\u7528\u542f\u52a8\u753b\u9762\u3002<\/span><\/p>\n

KVM\u652f\u6301\u865a\u62df\u673a\u5b9e\u65f6\u8fc1\u79fb<\/span>(Live Migration)<\/span>\u5417\uff1f<\/span><\/strong><\/p>\n

\u652f\u6301\uff01. <\/span>\u53c2\u770b<\/span>Migration<\/a>\u3002KVM\u652f\u6301\u4ece<\/span>AMD<\/span>\u7684\u4e3b\u673a\u5f80<\/span>INTEL<\/span>\u4e3b\u673a\u5b9e\u65f6\u8fc1\u79fb<\/span>(Live Migration)<\/span>\u5417\uff1f<\/span>
\n\t\u652f\u6301\uff01\u5bf9\u4e8e32<\/span>\u4f4d\u4e0d\u652f\u6301<\/span>NX<\/span>\u6216\u8005<\/span>XD<\/span>\u7684\u4e3b\u673a\uff0c\u53ef\u80fd\u4f1a\u6709\u4e00\u4e9b\u95ee\u9898\u3002\u4f46\u662f\u5bf9\u4e8e<\/span>64<\/span>\u4f4d\u7684\u5ba2\u6237\u673a\uff0c\u5e94\u8be5\u6ca1\u6709\u4e00\u70b9\u95ee\u9898\u7684\u3002\u5728<\/span>32<\/span>\u4f4d\u4e3b\u673a\u548c<\/span>64<\/span>\u4f4d\u4e3b\u673a\u4e4b\u95f4\u5b9e\u65f6\u8fc1\u79fb<\/span>(Live Migration)32<\/span>\u4f4d\u865a\u62df\u673a\u4e5f\u5e94\u8be5\u6ca1\u6709\u95ee\u9898\u3002\u5982\u679c\u5176\u4e2d\u4e00\u53f0\u4e3b\u673a\u4e0d\u652f\u6301<\/span>NX<\/span>\uff0c\u4f60\u8981\u8003\u8651\u5728\u652f\u6301<\/span>NX<\/span>\u7684\u90a3\u53f0\u673a\u542f\u52a8\u865a\u62df\u673a\u4e4b\u524d\u7981\u7528<\/span>NX<\/span>\u3002\u4f60\u53ef\u4ee5\u5728\u542f\u52a8\u5ba2\u6237\u673a\u65f6\u52a0\u5165<\/span>”<\/span>-cpu qemu64, -nx<\/span>”<\/span>\u53c2\u6570\u3002<\/span><\/p>\n

\u53ef\u4ee5\u572864<\/span>\u4f4d\u7684\u4e3b\u673a\u4e0a\u8fd0\u884c<\/span>32<\/span>\u4f4d\u7684\u5ba2\u6237\u673a\u5417\uff1f\u53ef\u4ee5\u7528<\/span>PAE<\/span>\u5417\uff1f<\/span><\/strong><\/p>\n

KVM\u652f\u6301\u5728<\/span>64<\/span>\u4f4d\u4e3b\u673a\u4e0a\u8fd0\u884c<\/span>32<\/span>\u4f4d\u7684\u5ba2\u6237\u673a\uff0c\u4e0d\u7ba1\u4e3b\u673a\u662f\u5426\u4f7f\u7528<\/span>PAE<\/span>\uff0c\u5ba2\u6237\u673a\u90fd\u53ef\u4ee5\u9009\u62e9\u4f7f\u7528<\/span>PAE<\/span>\u6216\u8005\u4e0d\u4f7f\u7528<\/span>PAE<\/span>\u3002<\/span>KVM<\/span>\u4e0d\u652f\u6301\u5728<\/span>32<\/span>\u4f4d\u7684\u4e3b\u673a\u4e0a\u8fd0\u884c<\/span>64<\/span>\u4f4d\u7684\u865a\u62df\u5ba2\u6237\u673a\u3002<\/span><\/p>\n

\u53ef\u4ee5\u5728\u57fa\u4e8eKVM<\/span>\u7684\u865a\u62df\u673a\u4e0a\u4f7f\u7528<\/span>USB<\/span>\u8bbe\u5907\u5417\uff1f<\/span><\/strong><\/p>\n

\u5f53\u7136\u53ef\u4ee5\uff0c\u8bf7\u53c2\u7167QEMU<\/span>\u7684\u505a\u6cd5\uff0c\u662f\u4e00\u6837\u7684\u3002<\/span><\/p>\n

\u6211\u53ef\u4ee5\u8ba9KVM<\/span>\u4f7f\u7528\u66f4\u9ad8\u7684\u5c4f\u5e55\u5206\u8fa8\u7387\u5417\uff1f<\/span><\/strong><\/p>\n

\u5728\u542f\u52a8VM<\/span>\u4e4b\u524d\u4f7f\u548c <\/span>-vga std <\/span>\u53c2\u6570\u53ef\u4ee5\u5145\u8bb8\u4f60\u8bbe\u7f6e\u66f4\u591a\u7684\u5206\u8fa8\u7387\u548c\u5c4f\u5e55\u5c3a\u5bf8\u3002<\/span>
\n\t\u5982\u679c\u4e0d\u80fd\u8c03\u5230\u4f60\u60f3\u8981\u7684\u5206\u8fa8\u7387\uff0c\u4f60\u53ef\u4ee5\u5c1d\u8bd5\u5b89\u88c5\u4e00\u4e2a\u8865\u4e01\u5305\uff0c\u8bf7\u53c2\u8003http:\/\/article.gmane.org\/gmane.comp.emulators.kvm.devel\/13557<\/a> \u3002
\n\t\u5f53\u4f60\u4f7f\u7528windows<\/span>\u4f5c\u4e3a\u5ba2\u6237\u673a\u64cd\u4f5c\u7cfb\u7edf\u7684\u65f6\u5019\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528<\/span>VBEMP x86<\/span>\u9879\u76ee\u4e2d\u5f00\u53d1\u7684\u9a71\u52a8\uff0c\u8fd9\u4e2a\u9879\u76ee\u662f\u57fa\u4e8e<\/span>ReactOS<\/span>\u5f00\u6e90\u9879\u76ee\u7684\uff0c\u8bf7\u6ce8\u610f\u4e0d\u8981\u8fdd\u53cd<\/span>GPL<\/span>\u8bb8\u53ef\u8bc1\u3002<\/span><\/p>\n

KVM\u652f\u6301\u5bf9\u79f0\u591a\u5904\u7406\u5668<\/span>(SMP)<\/span>\u7684<\/span>host<\/span>\u673a\u5417\uff1f<\/span><\/strong><\/p>\n

\u652f\u6301\uff01<\/p>\n

KVM\u652f\u6301\u5bf9\u79f0\u591a\u5904\u7406\u5668<\/span>(SMP)<\/span>\u7684\u5ba2\u6237\u673a\u5417\uff1f<\/span><\/strong><\/p>\n

Yes. Up to 16 CPUs can be specified using the -smp option.
\n\t\u662f\u7684\uff01\u76ee\u524d\u4e00\u5171\u6700\u591a16<\/span>\u9897<\/span>cpu<\/span>\uff0c\u8981\u4f7f\u7528<\/span>-smp<\/span>\u9009\u9879\u3002<\/span><\/p>\n

KVM\u5df2\u7ecf\u88ab\u6ce8\u518c\u4e3a\u5546\u6807\u4e86\u5417\uff1f<\/span><\/strong><\/p>\n

\u6ca1\u6709\uff01<\/p>\n

\u8f6c\u5e16\u8bf7\u6ce8\u660e\u51fa\u5904\uff1a http:\/\/ykyi.net\/2012\/06\/kvm%E4%BD%A0%E9%97%AE%E6%88%91%E7%AD%94-faq-%E5%9B%9B\/<\/a><\/p>\n

—– KVM FAQ \u5168\u5267\u7ec8 —–<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

KVM\u548cXen\u6709\u4ec0\u4e48\u533a\u522b\uff1f Xen\u662f\u4e00\u4e2a\u5916\u90e8\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f(External hypervisor)\uff0c\u5b83\u627f\u62c5\u4e86\u7ba1\u7406\u7269\u7406\u673a\u5668\u7684\u4efb\u52a1\u5e76\u628a\u7269\u7406\u673a\u5668\u7684\u5404\u79cd\u8d44\u6e90\u5206\u914d\u7ed9\u5ba2\u6237\u673a\u3002\u4e0eXen\u4e0d\u540c\uff0cKVM\u672c\u8eab\u662fLinux\u5185\u6838\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u4f7f\u7528Linux\u81ea\u5df1\u7684\u8fdb\u7a0b\u8c03\u5ea6\u548c\u5185\u5b58\u7ba1\u7406\u3002\u8fd9\u5c31\u5929\u7136\u51b3\u5b9a\u4e86KVM\u6613\u4e8e\u4f7f\u7528\u5e76\u4e8e\u4f53\u79ef\u4f1a\u5f88\u5c0f\u3002\u4ec5\u7ba1\u4f53\u79ef\u5c0f\uff0c\u4f46KVM\u7684\u529f\u80fd\u786e\u4e0d\u5c11\u3002\u6bd4\u5982\uff0cKVM\u53ef\u4ee5\u628a\u5ba2\u6237\u673a\u4ece\u5185\u5b58\u4e2d\u5151\u6362\u5230\u7269\u7406\u78c1\u76d8\u4e0a\uff0c\u5982\u540cswap\u666e\u901a\u8fdb\u7a0b\u4e00\u6837\u91ca\u653eRAM\u3002KVM\u76ee\u524d\u53ea\u5728\u63d0\u4f9b\u652f\u6301\u786c\u4ef6\u865a\u62df\u5316\u7684x86\u673a\u5668\u4e0a\u8fd0\u884c\uff08\u5982vt\/svm\u6307\u4ee4\u96c6\uff09\u3002\u4ece\u8fd9\u8fd9\u65b9\u9762\u8bb2\uff0cXen\u901a\u8fc7\u4fee\u6539\u5ba2\u6237\u673a\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5145\u8bb8\u865a\u62df\u673a\u8fd0\u884c\u5728\u6ca1\u6709\u786c\u4ef6\u865a\u62df\u5316\u6280\u672f\u7684x86\u5e73\u53f0\u4e0a\u8fd0\u884c\u3002\u8fd9\u79cd\u865a\u62df\u5316\u6280\u672f\u79f0\u4e4b\u4e3a\u51c6\u865a\u62df\u5316paravirtualization\uff0c\u53c2\u89c1\u53e6\u4e00\u8d34\uff1aLinux\u7684\u865a\u62df\u5316\u6280\u672f\u3002KVM\u5728CPU\u7ea7\u522b\u4e0d\u652f\u6301paravirtualization\uff0c\u4f46\u4e3a\u4e86\u6307\u9ad8I\/O\u6027\u80fd\uff0c\u4f1a\u5bf9\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f\u652f\u6301\u51c6\u865a\u62df\u5316\u3002 KVM\u548cVmware\u6709\u4ec0\u4e48\u533a\u522b\u5462\uff1f VMware\u662f\u4e00\u4e2a\u5546\u7528\u4e13\u7528\u865a\u62df\u5316\u4ea7\u54c1\uff0cKVM\u662f\u5728GPL\u8bb8\u53ef\u8bc1\u4e0b\u53d1\u5e03\u7684\u81ea\u7531\u8f6f\u4ef6\u3002 KVM\u548cQEMU\u6709\u4ec0\u4e48\u533a\u522b\uff1f QEMU\u662f\u6a21\u62df\u5668\u3002\u53c2\u89c1Linux\u7684\u865a\u62df\u5316\u6280\u672f KVM & QEMU \u3002 KVM\u6709windows\u4e0b\u7684\u79fb\u79fb\u690d\u7248\u672c\u5417\uff1f \u6ca1\u6709\u5b98\u65b9\u7684\u79fb\u690d\u3002Kazushi Takahashi\u53d1\u8d77\u4e86\u4e00\u4e2a\u9879\u76ee\uff0c\u628aKVM\u79fb\u690d\u5230windows\u64cd\u4f5c\u7cfb\u7edf\uff0c\u8fd9\u4e2a\u9879\u76ee\u540d\u4e3aWinKVM\uff0c\u8fd9\u662f\u4ed6\u7684\u5b98\u65b9\u7f51\u7ad9WinKVM\u3002 \u53ef\u53c2\u89c1\u53e6\u4e00\u7bc7\u6587\u7ae0 http:\/\/ykyi.net\/2012\/06\/595\/\u3002 \u9700\u8981\u600e\u6837\u7684Linux\u5185\u6838\u7248\u672c\u624d\u80fd\u8fd0\u884cKVM\u5462\uff1f \u8fd9\u53d6\u51b3\u4e8e\u4f60\u8981\u8fd0\u884c\u54ea\u4e2a\u7248\u672c\u7684KVM\u3002\u6700\u8fd1\u53d1\u5e03\u7684KVM\u5e94\u8be5\u53ef\u4ee5\u5728\u4efb\u4f552.6.17\u4ee5\u540e\u7684kernel\u7248\u672c\u4e0b\u8fd0\u884c\u3002\u4f46\u5f88\u65e7\u7248\u672c\u7684KVM\u53ea\u80fd\u5728\u4e00\u4e9b\u65e7\u7684\u5185\u6838\u4e0b\u8fd0\u884c\u3002 \u9700\u8981\u591a\u5c11\u5185\u5b58\u8fd0\u884cKVM\u5462\uff1f \u6700\u5c0f\u5e94\u8be51GB\u3002\u55ef\uff0c\u4f60\u5e94\u8be5\u6709\u8db3\u591f\u591a\u7684\u5185\u5b58\u8fd0\u884c\u4f60\u5c06\u8981\u8fd0\u884c\u7684\u5ba2\u6237\u673a\uff0c\u53e6\u5916\u5f53\u7136\u8fd8\u9700\u8981\u5185\u5b58\u8fd0\u884chost\u673a\u3002 \u662f\u5426\u652f\u6301\u5bf9\u5ba2\u6237\u673a\u52a8\u6001\u5206\u914d\u5185\u5b58\uff1f \u8fd9\u4e2a\u95ee\u9898\u6709\u70b9\u5927\uff01 1. KVM\u5728\u5ba2\u6237\u673a\u5c1d\u8bd5\u7533\u8bf7\u5185\u5b58\u65f6\u5206\u914d\u5185\u5b58\u7ed9\u5b83\u4eec\u3002\u4e00\u4f46\u5185\u5b58\u5206\u914d\u7ed3\u675f\u4e4b\u540e\uff0cKVM\u5219\u8ba4\u4e3a\u5185\u5b58\u5206\u7ed9\u67d0\u5ba2\u6237\u673a\u4e86\u3002\u6709\u4e00\u4e9b\u64cd\u4f5c\u7cfb\u7edf\uff0c\u6bd4\u5982Microsoft Windows\u4f1a\u5728\u542f\u52a8\u9636\u6bb5\u628a\u6240\u6709\u7684\u5185\u5b58\u90fd\u6e05\u96f6\u3002\u8fd9\u4e9b\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u7acb\u5373\u4f7f\u6709\u6216\u7ba1\u7406\u6240\u6709\u7684\u5185\u5b58\u3002 2. \u800c\u53e6\u4e00\u4e9b\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5b9e\u9645\u4e0a\u76ee\u524d\u53ea\u6709Linux\uff0c\u5b83\u4eec\u6709\u4e00\u4e2a\u79f0\u4e3aballoon driver\u7684\u4e1c\u4e1c\uff0c\u5982\u679chost\u5206\u914d\u4e86\u4e00\u4e9b\u5185\u5b58\u4f46\u5ba2\u6237\u673a\u5c06\u6765\u4e0d\u518d\u4f7f\u7528\u4e86\uff0c\u5b83\u5c31\u4f1a\u8ba9host\u628a\u5b83\u4eec\u91ca\u653e\u6389\u3002Ballooning\u662f\u901a\u8fc7balloon monitor command\u5728host\u673a\u4e2d\u88ab\u63a7\u5236\u7684\u3002 3. \u6709\u4e00\u4e9bhost\u673a\uff0c(\u76ee\u524d\u53ea\u6709RHEL5.4\/CentOS 5.4)\u6709\u4e00\u79cd\u7279\u6027\u79f0\u4e3aKSM(Kernel Sharedpage Merging)\u3002\u8fd9\u79cd\u7279\u6027\u53ef\u4ee5\u628a\u5b8c\u5168\u76f8\u9762\u7684\u5185\u5b58\u9875\u9762\u5408\u5e76\uff0c\u8fd9\u9700\u8981host\u673a\u7684\u652f\u6301\uff0c\u53e6\u5916KVM\u7684\u7248\u672c\u8981\u8db3\u591f\u65b0\u3002\u800c\u6709\u4e00\u4e9b\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5982windows\uff0c\u4f1a\u628a\u91ca\u653e\u7684\u5185\u5b58\u6e05\u96f6\uff0c\u8fd9\u4e9b\u9875\u9762\u81ea\u7136\u5c31\u4f1a\u5408\u5e76\u4e86\uff08such pages are trivially collapsed\u4e0d\u77e5\u9053\u6709\u6ca1\u6709\u8bd1\u5bf9\uff09\u3002Ksmctl\u547d\u4ee4\u7528\u6765\u5f00\u542fKSM\u3002\u53e6\u5916\u4e00\u79cd\u65b9\u6cd5\u662f\uff0cFedora 12\u4e2d\u7684ksmtuned\u670d\u52a1\u53ef\u4ee5\u6839\u636e\u53ef\u7528\u7684\u7a7a\u95f2\u5185\u5b58\u52a8\u6001\u7684\u8c03\u6574KSM\u7684\u5408\u5e76\u7b56\u7565\u662f\u5426\u79ef\u6781\u8fd8\u662f\u4fdd\u5b88\u3002 \u6211\u53ef\u4ee5\u5728KVM\u865a\u62df\u673a\u4e2d\u5b89\u88c5\u54ea\u4e9b\u64cd\u4f5c\u7cfb\u7edf\u5462\uff1f \u652f\u6301\u5f88\u591a\u79cd\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4f60\u53ef\u4ee5\u53c2\u770bGuest Support Status \u9875\u9762\u3002\u8bf7\u6ce8\u610f\u5df2\u7ecf\u6709\u4e00\u4e9bLinux\u53d1\u884c\u7248\u5728Intel\u5904\u7406\u5668\u4e0a\u4f1a\u5728\u542f\u52a8\u9636\u6bb5\u6b7b\u673a\uff0c\u89e3\u51b3\u529e\u6cd5\u662f\u5728grub\u91cc\u7981\u7528\u542f\u52a8\u753b\u9762\u3002 KVM\u652f\u6301\u865a\u62df\u673a\u5b9e\u65f6\u8fc1\u79fb(Live Migration)\u5417\uff1f \u652f\u6301\uff01. \u53c2\u770bMigration\u3002KVM\u652f\u6301\u4eceAMD\u7684\u4e3b\u673a\u5f80INTEL\u4e3b\u673a\u5b9e\u65f6\u8fc1\u79fb(Live Migration)\u5417\uff1f \u652f\u6301\uff01\u5bf9\u4e8e32\u4f4d\u4e0d\u652f\u6301NX\u6216\u8005XD\u7684\u4e3b\u673a\uff0c\u53ef\u80fd\u4f1a\u6709\u4e00\u4e9b\u95ee\u9898\u3002\u4f46\u662f\u5bf9\u4e8e64\u4f4d\u7684\u5ba2\u6237\u673a\uff0c\u5e94\u8be5\u6ca1\u6709\u4e00\u70b9\u95ee\u9898\u7684\u3002\u572832\u4f4d\u4e3b\u673a\u548c64\u4f4d\u4e3b\u673a\u4e4b\u95f4\u5b9e\u65f6\u8fc1\u79fb(Live Migration)32\u4f4d\u865a\u62df\u673a\u4e5f\u5e94\u8be5\u6ca1\u6709\u95ee\u9898\u3002\u5982\u679c\u5176\u4e2d\u4e00\u53f0\u4e3b\u673a\u4e0d\u652f\u6301NX\uff0c\u4f60\u8981\u8003\u8651\u5728\u652f\u6301NX\u7684\u90a3\u53f0\u673a\u542f\u52a8\u865a\u62df\u673a\u4e4b\u524d\u7981\u7528NX\u3002\u4f60\u53ef\u4ee5\u5728\u542f\u52a8\u5ba2\u6237\u673a\u65f6\u52a0\u5165”-cpu qemu64, -nx”\u53c2\u6570\u3002 \u53ef\u4ee5\u572864\u4f4d\u7684\u4e3b\u673a\u4e0a\u8fd0\u884c32\u4f4d\u7684\u5ba2\u6237\u673a\u5417\uff1f\u53ef\u4ee5\u7528PAE\u5417\uff1f KVM\u652f\u6301\u572864\u4f4d\u4e3b\u673a\u4e0a\u8fd0\u884c32\u4f4d\u7684\u5ba2\u6237\u673a\uff0c\u4e0d\u7ba1\u4e3b\u673a\u662f\u5426\u4f7f\u7528PAE\uff0c\u5ba2\u6237\u673a\u90fd\u53ef\u4ee5\u9009\u62e9\u4f7f\u7528PAE\u6216\u8005\u4e0d\u4f7f\u7528PAE\u3002KVM\u4e0d\u652f\u6301\u572832\u4f4d\u7684\u4e3b\u673a\u4e0a\u8fd0\u884c64\u4f4d\u7684\u865a\u62df\u5ba2\u6237\u673a\u3002 \u53ef\u4ee5\u5728\u57fa\u4e8eKVM\u7684\u865a\u62df\u673a\u4e0a\u4f7f\u7528USB\u8bbe\u5907\u5417\uff1f \u5f53\u7136\u53ef\u4ee5\uff0c\u8bf7\u53c2\u7167QEMU\u7684\u505a\u6cd5\uff0c\u662f\u4e00\u6837\u7684\u3002 \u6211\u53ef\u4ee5\u8ba9KVM\u4f7f\u7528\u66f4\u9ad8\u7684\u5c4f\u5e55\u5206\u8fa8\u7387\u5417\uff1f \u5728\u542f\u52a8VM\u4e4b\u524d\u4f7f\u548c -vga std \u53c2\u6570\u53ef\u4ee5\u5145\u8bb8\u4f60\u8bbe\u7f6e\u66f4\u591a\u7684\u5206\u8fa8\u7387\u548c\u5c4f\u5e55\u5c3a\u5bf8\u3002 \u5982\u679c\u4e0d\u80fd\u8c03\u5230\u4f60\u60f3\u8981\u7684\u5206\u8fa8\u7387\uff0c\u4f60\u53ef\u4ee5\u5c1d\u8bd5\u5b89\u88c5\u4e00\u4e2a\u8865\u4e01\u5305\uff0c\u8bf7\u53c2\u8003http:\/\/article.gmane.org\/gmane.comp.emulators.kvm.devel\/13557 \u3002 \u5f53\u4f60\u4f7f\u7528windows\u4f5c\u4e3a\u5ba2\u6237\u673a\u64cd\u4f5c\u7cfb\u7edf\u7684\u65f6\u5019\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528VBEMP x86\u9879\u76ee\u4e2d\u5f00\u53d1\u7684\u9a71\u52a8\uff0c\u8fd9\u4e2a\u9879\u76ee\u662f\u57fa\u4e8eReactOS\u5f00\u6e90\u9879\u76ee\u7684\uff0c\u8bf7\u6ce8\u610f\u4e0d\u8981\u8fdd\u53cdGPL\u8bb8\u53ef\u8bc1\u3002 KVM\u652f\u6301\u5bf9\u79f0\u591a\u5904\u7406\u5668(SMP)\u7684host\u673a\u5417\uff1f \u652f\u6301\uff01 KVM\u652f\u6301\u5bf9\u79f0\u591a\u5904\u7406\u5668(SMP)\u7684\u5ba2\u6237\u673a\u5417\uff1f Yes. Up to 16 CPUs can be specified using the -smp option. \u662f\u7684\uff01\u76ee\u524d\u4e00\u5171\u6700\u591a16\u9897cpu\uff0c\u8981\u4f7f\u7528-smp\u9009\u9879\u3002 KVM\u5df2\u7ecf\u88ab\u6ce8\u518c\u4e3a\u5546\u6807\u4e86\u5417\uff1f \u6ca1\u6709\uff01 \u8f6c\u5e16\u8bf7\u6ce8\u660e\u51fa\u5904\uff1a http:\/\/ykyi.net\/2012\/06\/kvm%E4%BD%A0%E9%97%AE%E6%88%91%E7%AD%94-faq-%E5%9B%9B\/ —– KVM FAQ \u5168\u5267\u7ec8 —–  <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,7,8],"tags":[51,52,68,122],"class_list":["post-579","post","type-post","status-publish","format-standard","hentry","category-tech_articles","category-unix_linux","category-virtualization","tag-linux-2","tag-linux-kernel","tag-qemu","tag--virtulization"],"_links":{"self":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts\/579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=579"}],"version-history":[{"count":0,"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts\/579\/revisions"}],"wp:attachment":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}