{"id":3139,"date":"2020-08-18T18:35:17","date_gmt":"2020-08-18T10:35:17","guid":{"rendered":"http:\/\/www.fatesky.com\/?p=3139"},"modified":"2024-03-19T21:58:10","modified_gmt":"2024-03-19T13:58:10","slug":"%e3%80%90uos%e8%bf%90%e7%bb%b4%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%e3%80%91-kvm-%e8%99%9a%e6%8b%9f%e6%9c%ba%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.fatesky.com\/?p=3139","title":{"rendered":"\u3010UOS\u8fd0\u7ef4\u5b66\u4e60\u7b14\u8bb0\u3011- KVM \u865a\u62df\u673a\u7ba1\u7406"},"content":{"rendered":"\n

\u4e00\u3001\u7b80\u4ecb<\/h2>\n\n\n\n

1\u3001\u4ec0\u4e48\u662f\u865a\u62df\u5316\uff1f<\/p>\n\n\n\n

\u5728\u8ba1\u7b97\u673a\u6280\u672f\u4e2d\uff0c\u865a\u62df\u5316\uff08\u6280\u672f\uff09\u6216\u865a\u62df\u6280\u672f\uff08\u82f1\u8bed\uff1aVirtualization\uff09\u662f\u4e00\u79cd\u8d44\u6e90\u7ba1\u7406\u6280\u672f\uff0c\u662f\u5c06\u8ba1\u7b97\u673a\u7684\u5404\u79cd\u5b9e\u4f53\u8d44\u6e90\uff08CPU\u3001\u5185\u5b58\u3001\u78c1\u76d8\u7a7a\u95f4\u3001\u7f51\u7edc\u9002\u914d\u5668\u7b49\uff09\uff0c\u4e88\u4ee5\u62bd\u8c61\u3001\u8f6c\u6362\u540e\u5448\u73b0\u51fa\u6765\u5e76\u53ef\u4f9b\u5206\u533a\u3001\u7ec4\u5408\u4e3a\u4e00\u4e2a\u6216\u591a\u4e2a\u7535\u8111\u914d\u7f6e\u73af\u5883\u7531\u6b64\uff0c\u6253\u7834\u5b9e\u4f53\u7ed3\u6784\u95f4\u7684\u4e0d\u53ef\u5207\u5272\u7684\u969c\u788d\uff0c\u4f7f\u7528\u6237\u53ef\u4ee5\u6bd4\u539f\u672c\u7684\u914d\u7f6e\u66f4\u597d\u7684\u65b9\u5f0f\u6765\u5e94\u7528\u8fd9\u4e9b\u7535\u8111\u786c\u4ef6\u8d44\u6e90\u3002\u8fd9\u4e9b\u8d44\u6e90\u7684\u65b0\u865a\u62df\u90e8\u5206\u662f\u4e0d\u53d7\u73b0\u6709\u8d44\u6e90\u7684\u67b6\u8bbe\u65b9\u5f0f\uff0c\u5730\u57df\u6216\u7269\u7406\u914d\u7f6e\u6240\u9650\u5236\u3002<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

2\u3001\u4e3a\u4ec0\u4e48\u8981\u7528\u865a\u62df\u5316<\/p>\n\n\n\n

\u540c\u4e00\u53f0\u7269\u7406\u673a\u8fd0\u884c\u591a\u4e2a\u4e0d\u540c\u7248\u672c\u5e94\u7528\u8f6f\u4ef6
\u786c\u4ef6\u4f9d\u8d56\u6027\u8f83\u4f4e\u548c\u4fbf\u4e8e\u6570\u636e\u8fc1\u79fb<\/p>\n\n\n\n

3\u3001\u865a\u62df\u5316\u6280\u672f\u7684\u4f18\u52bf<\/p>\n\n\n\n

1.\u964d\u4f4e\u8fd0\u8425\u6210\u672c
2.\u63d0\u9ad8\u5e94\u7528\u517c\u5bb9\u6027
3.\u52a0\u901f\u5e94\u7528\u90e8\u7f72
4.\u63d0\u9ad8\u670d\u52a1\u53ef\u7528\u6027
5.\u63d0\u5347\u8d44\u6e90\u5229\u7528\u7387
6.\u52a8\u6001\u8c03\u5ea6\u8d44\u6e90
7.\u964d\u4f4e\u80fd\u6e90\u6d88\u8017<\/p>\n\n\n\n

4\u3001KVM \u7b80\u4ecb<\/p>\n\n\n\n

KVM — \u5168\u79f0\u662f\u57fa\u4e8e\u5185\u6838\u7684\u865a\u62df\u673a\uff08Kernel-based Virtual Machine\uff09** \u662f\u4e00\u4e2a\u5f00\u6e90\u8f6f\u4ef6\uff0c\u57fa\u4e8e\u5185\u6838\u7684\u865a\u62df\u5316\u6280\u672f\uff0c\u5b9e\u9645\u662f\u5d4c\u5165\u7cfb\u7edf\u7684\u4e00\u4e2a\u865a\u62df\u5316\u6a21\u5757\uff0c\u901a\u8fc7\u4f18\u5316\u5185\u6838\u6765\u4f7f\u7528\u865a\u62df\u6280\u672f\uff0c\u8be5\u5185\u6838\u6a21\u5757\u4f7f\u5f97 Linux \u53d8\u6210\u4e86\u4e00\u4e2a Hypervisor\uff0c\u865a\u62df\u673a\u4f7f\u7528Linux \u81ea\u8eab\u7684\u8c03\u5ea6\u5668\u8fdb\u884c\u7ba1\u7406\u3002<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

KVM \u662f\u57fa\u4e8e\u865a\u62df\u5316\u6269\u5c55\uff08Intel VT \u6216\u8005 AMD-V\uff09\u7684 X86 \u786c\u4ef6\u7684\u5f00\u6e90\u7684 Linux \u539f\u751f\u7684\u5168\u865a\u62df\u5316\u89e3\u51b3\u65b9\u6848\u3002KVM \u4e2d\uff0c\u865a\u62df\u673a\u88ab\u5b9e\u73b0\u4e3a\u5e38\u89c4\u7684 Linux \u8fdb\u7a0b\uff0c\u7531\u6807\u51c6 Linux \u8c03\u5ea6\u7a0b\u5e8f\u8fdb\u884c\u8c03\u5ea6\uff1b\u865a\u673a\u7684\u6bcf\u4e2a\u865a\u62df CPU \u88ab\u5b9e\u73b0\u4e3a\u4e00\u4e2a\u5e38\u89c4\u7684 Linux \u8fdb\u7a0b\u3002\u8fd9\u4f7f\u5f97 KMV \u80fd\u591f\u4f7f\u7528 Linux \u5185\u6838\u7684\u5df2\u6709\u529f\u80fd\u3002\u4f46\u662f\uff0cKVM \u672c\u8eab\u4e0d\u6267\u884c\u4efb\u4f55\u786c\u4ef6\u6a21\u62df\uff0c\u9700\u8981\u5ba2\u6237\u7a7a\u95f4\u7a0b\u5e8f\u901a\u8fc7 \/dev\/kvm \u63a5\u53e3\u8bbe\u7f6e\u4e00\u4e2a\u5ba2\u6237\u673a\u865a\u62df\u670d\u52a1\u5668\u7684\u5730\u5740\u7a7a\u95f4\uff0c\u5411\u5b83\u63d0\u4f9b\u6a21\u62df\u7684 I\/O\uff0c\u5e76\u5c06\u5b83\u7684\u89c6\u9891\u663e\u793a\u6620\u5c04\u56de\u5bbf\u4e3b\u7684\u663e\u793a\u5c4f\u3002\u76ee\u524d\u8fd9\u4e2a\u5e94\u7528\u7a0b\u5e8f\u662f QEMU\u3002<\/p>\n\n\n\n

\u4e8c\u3001\u5b89\u88c5 KVM<\/h2>\n\n\n\n

1\u3001\u5b9e\u9a8c\u73af\u5883\u51c6\u5907\uff1a<\/p>\n\n\n\n

egrep \"(svm|vmx)\" \/proc\/cpuinfo #\u67e5\u770b cpu \u662f\u5426\u652f\u6301\u865a\u62df\u5316<\/code><\/p>\n\n\n\n

#vmx \u5bf9\u5e94 inter \u7684 cpu\uff0csvm \u5bf9\u5e94 amd \u7684 cpu\uff0c\u8fd8\u9700\u5728\u4e3b\u677f bios \u6253\u5f00\u865a\u62df\u5316\u9009\u9879\uff0c\u76ee\u524d\uff0c\u591a\u6570\u670d\u52a1\u5668\u57fa\u7840\u684c\u9762\u8ba1\u7b97\u673a\u5747\u5904\u7406\u542f\u52a8\u72b6\u6001<\/p>\n\n\n\n

apt-get install libvirt0 libvirt-daemon qemu virt-manager bridge-utils libvirt-clients python-libvirt qemu-efi uml-utilities virtinst qemu-system<\/code><\/p>\n\n\n\n

#\u5b89\u88c5 KVM \u548c\u76f8\u5173\u865a\u62df\u5316\u5de5\u5177libvirt \u662f\u7ba1\u7406\u865a\u62df\u673a\u548c\u5176\u4ed6\u865a\u62df\u5316\u529f\u80fd\uff0c\u6bd4\u5982\u5b58\u50a8\u7ba1\u7406\uff0c\u7f51\u7edc\u7ba1\u7406\u7684\u8f6f\u4ef6\u96c6\u5408\u3002\u5b83\u5305\u62ec\u4e00\u4e2aAPI \u5e93\uff0c\u4e00\u4e2a\u5b88\u62a4\u7a0b\u5e8f\uff08libvirtd\uff09\u548c\u4e00\u4e2a\u547d\u4ee4\u884c\u5de5\u5177\uff08virsh\uff09\uff1blibvirt \u672c\u8eab\u6784\u5efa\u4e8e\u4e00\u79cd\u62bd\u8c61\u7684\u6982\u5ff5\u4e4b\u4e0a\u3002\u5b83\u4e3a\u53d7\u652f\u6301\u7684\u865a\u62df\u673a\u76d1\u63a7\u7a0b\u5e8f\u5b9e\u73b0\u7684\u5e38\u7528\u529f\u80fd\u63d0\u4f9b\u901a\u7528\u7684 API\u3002libvirt \u7684\u4e3b\u8981\u76ee\u6807\u662f\u4e3a\u5404\u79cd\u865a\u62df\u5316\u5de5\u5177\u63d0\u4f9b\u4e00\u5957\u65b9\u4fbf\u3001\u53ef\u9760\u7684\u7f16\u7a0b\u63a5\u53e3\uff0c\u7528\u4e00\u79cd\u5355\u4e00\u7684\u65b9\u5f0f\u7ba1\u7406\u591a\u79cd\u4e0d\u540c\u7684\u865a\u62df\u5316\u63d0\u4f9b\u65b9\u5f0f\u3002<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

2\u3001\u4e24\u79cd\u7ba1\u7406\u65b9\u6cd5\uff1a<\/p>\n\n\n\n

virt-manager \u662f\u56fe\u5f62\u5316\u65b9\u5f0f\uff0c\u76f8\u5bf9\u76f4\u89c2\u3002
virsh \u662f\u547d\u4ee4\u884c\u65b9\u5f0f
systemctl restart libvirtd.service #\u542f\u52a8 libvirtd
systemctl status libvirtd.service #\u67e5\u770b\u542f\u52a8\u72b6\u6001<\/code>
\u4f7f\u7528\u56fe\u5f62\u5316\u5b89\u88c5 \u4e00\u53f0\u540d\u4e3a UOS1 \u7684\u865a\u62df\u673a<\/p>\n\n\n\n

\u4e09\u3001\u57fa\u7840\u64cd\u4f5c\u6307\u4ee4<\/h2>\n\n\n\n

virsh\uff08\u865a\u62df shell\uff09\uff0c\u57fa\u4e8e\u547d\u4ee4\u884c\u7684\u7ba1\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u5b9e\u73b0\u7b80\u5355\u7684\u8d44\u6e90\u7ba1\u7406\u3002\u652f\u6301\u4ea4\u4e92\u6a21\u5f0f
virsh shutdown uos1 #\u6b63\u5e38\u5173\u95ed vm \u865a\u62df\u673a
virsh start uos1 #\u542f\u52a8 kvm \u865a\u62df\u673a
virsh destroy uos1 #\u5f3a\u5236\u5173\u95ed kvm \u865a\u62df\u673a
virsh list #\u663e\u793a\u672c\u5730\u6d3b\u52a8\u865a\u62df\u673a
virsh list --all #\u67e5\u770b\u6240\u6709\u865a\u62df\u673a
virsh suspend uos1 #\u6302\u8d77 kvm \u865a\u62df\u673a
virsh resume uos1 #\u6062\u590d\u88ab\u6302\u8d77\u865a\u62df\u673a
virsh dominfo uos1 #\u67e5\u770b\u6307\u5b9a\u865a\u62df\u673a\u7684\u914d\u7f6e\u6458\u8981\u4fe1\u606f
virsh undefine uos1 #\u5220\u9664 kvm \u865a\u62df\u673a\uff08\u5982\u679c\u865a\u62df\u673a\u5904\u4e8e runing\uff0c\u4e00\u65e6\u5173\u95ed\u5c31\u4f1a\u6d88\u5931\uff09
virsh dumpxml uos1 #\u663e\u793a\u865a\u62df\u673a\u7684\u5f53\u524d\u914d\u7f6e\u6587\u4ef6
virsh define uos2.xml #\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u5b9a\u4e49\u4e00\u4e2a\u865a\u62df\u673a\uff08\u8fd9\u4e2a\u865a\u62df\u673a\u8fd8\u4e0d\u662f\u6d3b\u52a8\u7684\uff09
virsh autostart uos1 # \u865a \u62df \u673a \u8bbe \u4e3a \u81ea \u52a8 \u542f \u52a8 \uff08 \u751f \u6210\/etc\/libvirt\/qemu\/autostart\/ \uff09
virsh autostart --disable uos1 #\u53d6\u6d88\u81ea\u52a8\u542f\u52a8
virsh edit ubuntu #\u7f16\u8f91\u914d\u7f6e\u6587\u4ef6\uff08\u4e00\u822c\u662f\u5728\u521a\u5b9a\u4e49\u5b8c\u865a\u62df\u673a\u4e4b\u540e\uff09
virsh setmem ubuntu 512000 #\u7ed9\u4e0d\u6d3b\u52a8\u865a\u62df\u673a\u8bbe\u7f6e\u5185\u5b58\u5927\u5c0f
virsh setvcpus ubuntu 4 # \u7ed9\u4e0d\u6d3b\u52a8\u865a\u62df\u673a\u8bbe\u7f6e cpu \u4e2a\u6570<\/code><\/p>\n\n\n\n

\u56db\u3001xml \u914d\u7f6e\u6587\u4ef6\u7684\u5e94\u7528<\/h2>\n\n\n\n

\uff081\uff09xml \u914d\u7f6e\u6587\u4ef6\u8be6\u89e3<\/p>\n\n\n\n

xml \u914d\u7f6e\u6587\u4ef6\u4e5f\u5c31\u662f\u901a\u5e38\u6240\u8bf4\u7684\u865a\u62df\u673a\u7684\u63cf\u8ff0\u6587\u4ef6\uff0c\u4e3b\u8981\u7528\u6765\u5b9a\u4e49\u4e00\u4e2a\u865a\u62df\u673a\u7684\u540d\u79f0\u3001UUID\u3001CPU\u3001\u5185\u5b58\u3001\u865a\u62df\u78c1\u76d8\u3001\u7f51\u5361\u7b49\u5404\u79cd\u53c2\u6570\u8bbe\u7f6e<\/p>\n\n\n\n

\/etc\/libvirt\/qemu\/ #\u914d\u7f6e\u6587\u4ef6\u9ed8\u8ba4\u8def\u5f84<\/strong><\/p>\n\n\n\n

uos.xml \u914d\u7f6e\u6587\u4ef6\u8bf4\u660e:<\/p>\n\n\n\n

<domain type=’kvm’>
<name>uos<\/name> #\u865a\u62df\u673a\u7684\u540d\u5b57
<uuid>16e9cb49-8b05-4b34-9325-3bcf169dd32e<\/uuid> #uuid \u503c
<memory unit=’KiB’>4194304<\/memory> #\u865a\u62df\u673a\u7684\u6700\u5927\u5185\u5b58
<currentMemory unit=’KiB’>4194304<\/currentMemory> #\u865a\u62df\u673a\u5f53\u524d\u7684\u5185\u5b58
<vcpu placement=’static’>4<\/vcpu> #\u8be5\u865a\u62df\u673a\u7684 cpu \u6570
<os>
<type arch=’x86_64′ machine=’pc-i440fx-3.1’>hvm<\/type> #hvm \u8868\u793a\u5168\u865a\u62df\u5316
<boot dev=’hd’\/> #hd \u8868\u793a\u4ece\u786c\u76d8\u542f\u52a8<\/span>
<\/p>\n\n\n\n

<\/os> Id Name State
———————–
– uos2 shut off<\/p>\n\n\n\n

<emulator>\/usr\/bin\/qemu-system-x86_64<\/emulator> #\u4e8c\u8fdb\u5236\u6a21\u62df\u5668\u8bbe\u5907\u7684\u5b8c\u6574\u8def\u5f84
<disk type=’file’ device=’disk’> #disk \u662f\u7528\u6765\u63cf\u8ff0\u78c1\u76d8\u7684\u4e3b\u8981\u5bb9\u5668
<driver name=’qemu’ type=’qcow2’\/>
<source file=’\/var\/lib\/libvirt\/images\/kvm\/uos.qcow2’\/><\/span>
<\/p>\n\n\n\n

Id Name State
———————–
– uos2 shut off #\u6307\u5b9a\u78c1\u76d8\u4e0a\u6587\u4ef6\u7684\u7edd\u5bf9\u8def\u5f84<\/p>\n\n\n\n

<target dev=’hda’ bus=’ide’\/>
<address type=’drive’ controller=’0′ bus=’0′ target=’0′ unit=’0’\/>
<interface type=’ direct #\u6865\u63a5\u8bbe\u5907
<mac address=’52:54:00:0c:ae:41’\/> #MAC \u5730\u5740
<source dev=’enp2s0′ mode=’bridge’\/>
<model type=’e1000’\/>
<address type=’pci’ domain=’0x0000′ bus=’0x00′ slot=’0x03′ function=’0x0’\/>
<\/interface>
<source network=’br0\/> \u00a0<\/span><\/p>\n\n\n\n

\uff082\uff09qemu-img \u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5236\u78c1\u76d8\u955c\u50cf\u7ba1\u7406\u5de5\u5177<\/p>\n\n\n\n

qemu-img –help \u5305\u62ec\u4ee5\u4e0b\u529f\u80fd
check \u68c0\u67e5\u5b8c\u6574\u6027
create \u521b\u5efa\u955c\u50cf
commit \u63d0\u4ea4\u66f4\u6539
compare \u6bd4\u8f83
convert \u8f6c\u6362
info \u83b7\u5f97\u4fe1\u606f
map \u6620\u5c04
snapshot \u5feb\u7167\u7ba1\u7406
rebase \u5728\u5df2\u6709\u7684\u955c\u50cf\u7684\u57fa\u7840\u4e0a\u521b\u5efa\u65b0\u7684\u955c\u50cf
resize \u8c03\u6574\u5927\u5c0f
amend \u4fee\u8ba2\u955c\u50cf\u683c\u5f0f\u9009<\/span><\/p>\n\n\n\n

\uff083\uff09\u5c06\u865a\u62df\u673a uos1 \u6539\u540d\u4e3a uos2<\/p>\n\n\n\n

uuidgen #\u751f\u6210\u65b0\u7684 UUID \u5b57\u4e32\uff0c\u5e76\u590d\u5236\u5907\u7528<\/code>
76d5dc2c-5eef-4e30-8b6c-e58851814f84
virsh edit uos #\u7f16\u8f91\u865a\u62df\u673a\u914d\u7f6e<\/code><\/p>\n\n\n\n

<domain type=’kvm’>
<name>uos2<\/name> #\u65b0\u540d\u79f0
<uuid>76d5dc2c-5eef-4e30-8b6c-e58851814f84<\/uuid> #\u65b0 UUID \u503c<\/span>

virsh list --all #\u786e\u8ba4\u5bfc\u5165\u7684\u65b0\u914d\u7f6e<\/code><\/p>\n\n\n\n

Id Name State
———————–
-uos1 shut off
uos2 shut off #\u65b0\u540d\u79f0\u7684\u865a\u62df\u673a<\/p>\n\n\n\n


virsh undefine uos1 #\u5220\u9664\u65e7\u540d\u79f0\u7684\u865a\u62df\u673a
virsh list --all #\u786e\u8ba4\u7ed3\u679c<\/code><\/p>\n\n\n\n

Id Name State
———————–
– uos2 shut off<\/p>\n\n\n\n

\uff084\uff09\u590d\u5236 uos2 \u865a\u62df\u673a\u4e3a uos3<\/p>\n\n\n\n

uuidgen #\u751f\u6210\u65b0 UUID\uff0c\u5e76\u590d\u5236\u5907\u7528<\/code>
7b292992-a86e-4386-951f-a577365cc721<\/p>\n\n\n\n

Id Name State
———————–
– uos2 shut off<\/p>\n\n\n\n

virsh dumpxml uos2>\/etc\/libvirt\/qemu\/uos3.xml #\u5bfc\u51fa\u914d\u7f6e
vim \/etc\/libvirt\/qemu\/uos3.xml #\u4fee\u6539\u5bfc\u51fa\u540e\u7684\u914d\u7f6e<\/code>
<\/p>\n\n\n\n

<domain type=’kvm’>
<name>uos3<\/name> #\u65b0\u540d\u79f0
<uuid>3d7f2197-8dad-473c-99af-0570cd02ae5c<\/uuid> #\u65b0 UUID \u503c
<memory unit=’KiB’>4194304<\/memory> #\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4d KB
<currentMemory unit=’KiB’>4194304<\/currentMemory> #\u865a\u62df\u673a\u5206\u914d\u7684\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4d KB
<vcpu placement=’static’>2<\/vcpu> #\u865a\u62df CPU \u6838\u6570
<disk type=’file’ device=’disk’>
<driver name=’qemu’ type=’qcow2’\/>
<source file=’\/var\/lib\/libvirt\/images\/uos3.qcow2’\/> #\u65b0\u78c1\u76d8\u8def\u5f84
<target dev=’hda’ bus=’ide’\/>
<address type=’drive’ controller=’0′ bus=’0′ target=’0′ unit=’0’\/>
<\/disk>
<interface type=’network’> #\u865a\u62df\u673a\u7f51\u7edc\u8fde\u63a5\u65b9\u5f0f
<mac address=’52:54:00:f5:9c:44’\/> #\u4fee\u6539 MAC \u5730\u5740
<source network=’private1’\/> #\u5f53\u524d\u4e3b\u673a\u7f51\u6865\u7684\u540d\u79f0
<model type=’e1000’\/>
<address type=’pci’ domain=’0x0000′ bus=’0x00′ slot=’0x03′ function=’0x0’\/><\/span><\/p>\n\n\n\n

virsh list --all #\u786e\u8ba4\u7ed3\u679c<\/code><\/p>\n\n\n\n

Id Name State
———————–
– uos2 shut off
– uos3 shut off #\u65b0\u865a\u62df\u673a<\/p>\n\n\n\n

\uff085\uff09\u5feb\u5efa\u865a\u62df\u673a<\/p>\n\n\n\n

\u628a uos2 \u5f53\u505a\u6a21\u677f\u673a,\u63d0\u53d6 uos2 \u7684\u865a\u62df\u673a\u78c1\u76d8\u3001xml \u914d\u7f6e\u6587\u4ef6
qemu-img info \/var\/lib\/libvirt\/images\/kvm\/uos2.qcow2 #<\/code><\/p>\n\n\n\n

image: \/var\/lib\/libvirt\/images\/kvm\/uos.qcow2
file format: qcow2
virtual size: 64G (68719476736 bytes) #\u865a\u62df\u673a\u78c1\u76d8\u5bb9\u91cf
disk size: 8.1G #\u5728 KVM \u670d\u52a1\u5668\u5360\u7528\u5bb9\u91cf
cluster_size: 65536
Format specific information:
compat: 1.1
lazy refcounts: true
refcount bits: 16
corrupt: false<\/span><\/p>\n\n\n\n

qemu-img create -f qcow2 -b \/var\/lib\/libvirt\/images\/kvm\/uos2.qcow2 \/var\/lib\/libvirt\/images\/kvm\/uos4.qcow2 #\u590d\u7528 uos2 \u6a21\u677f\u673a\u7684\u78c1\u76d8\u6570\u636e
cd \/etc\/libvirt\/qemu\/
cp uos2.xml uos4.xml #\u590d\u5236\u914d\u7f6e
vim uos4.xml #\u4fee\u6539\u914d\u7f6e\u6587\u4ef6<\/code>

<name>uos4<\/name> #\u65b0\u865a\u62df\u673a\u540d\u79f0
<uuid>da2478f0-abf0-11ea-a912-6f46e76df6b1<\/uuid> #\u65b0 UUID \u503c
<disk type=’file’ device=’disk’> #\u6587\u4ef6\u7c7b\u578b
<driver name=’qemu’ type=’qcow2’\/> #\u78c1\u76d8\u7c7b\u578b
<source file=’\/var\/lib\/libvirt\/images\/kvm\/uos4.qcow2’\/> #\u65b0\u865a\u62df\u5377\u4f4d\u7f6e
<target dev=’hda’ bus=’ide’\/>
<address type=’drive’ controller=’0′ bus=’0′ target=’0′ unit=’0’\/>
<\/disk>
<\/controller>
<interface type=’network’> #\u865a\u62df\u673a\u7684\u7f51\u7edc\u63a5\u53e3\u7c7b\u578b
#\u5220\u9664 MAC \u5730\u5740
<source network=’network1’\/> #\u865a\u62df\u673a\u7684\u7f51\u5361\u7684\u6e90\u7f51\u7edc\u540d\u79f0
<model type=’e1000’\/><\/span><\/p>\n\n\n\n

virsh define \/etc\/libvirt\/qemu\/uos1.xml Domain uos1 defined from \/etc\/libvirt\/qemu\/uos4.xml #\u6839\u636e\u914d\u7f6e\u6587\u4ef6\u5b9a\u4e49\u865a\u62df\u673a
virsh list --all #\u67e5\u770b\u6240\u6709\u865a\u62df\u4e3b\u673a<\/code><\/p>\n\n\n\n

Id Name State
———————–
– uos2 shut off
– uos4 shut off<\/p>\n\n\n\n

virsh start uos4 #\u5f00\u542f uos \u865a\u62df\u673a\u914d\u7f6e\u4e3b\u673a\u540d\u3001ip \u5730\u5740\u7b49<\/code><\/p>\n\n\n\n

\uff086\uff09\u5feb\u7167\uff08raw \u683c\u5f0f\u7684\u78c1\u76d8\u65e0\u6cd5\u521b\u5efa\u5feb\u7167\uff09<\/p>\n\n\n\n

qemu-img snapshot -l \/kvm\/img\/test12.qcow2 #\u67e5\u770b\u78c1\u76d8\u5feb\u7167
virsh snapshot-list test12 #\u67e5\u770b\u5feb\u7167
virsh snapshot-create test12 #\u751f\u6210\u5feb\u7167
virsh snapshot-create-as test12 snap1 #\u81ea\u5b9a\u4e49\u5feb\u7167\u540d
virsh snapshot-revert test12 snap1 #\u5feb\u7167\u6062\u590d\u865a\u62df
virsh snapshot-delete test12 snapname #\u5220\u9664\u6307\u5b9a\u5feb\u7167
virsh snapshot-current test12<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001\u7b80\u4ecb 1\u3001\u4ec0\u4e48\u662f\u865a\u62df\u5316\uff1f \u5728\u8ba1\u7b97\u673a\u6280\u672f\u4e2d\uff0c\u865a\u62df\u5316\uff08\u6280\u672f\uff09\u6216\u865a\u62df\u6280\u672f\uff08\u82f1\u8bed\uff1aVirtualization\uff09\u662f […]<\/p>\n","protected":false},"author":1,"featured_media":3173,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[120],"class_list":["post-3139","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-2","tag-kvm"],"_links":{"self":[{"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/posts\/3139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3139"}],"version-history":[{"count":1,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/posts\/3139\/revisions"}],"predecessor-version":[{"id":3277,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/posts\/3139\/revisions\/3277"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/media\/3173"}],"wp:attachment":[{"href":"https:\/\/www.fatesky.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}