how to use domxml-from-native

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test

#gedit argv.txt

qemu-system-x86_64 -m 512 -smp 2 drive file=/root/tiny/ubuntu.img -nographic

#virsh domxml-from-native qemu-argv argv.txt > peipei.xml

#cat peipei.xml
<domain type='qemu' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
<name>unnamed</name>
<uuid>63478def-a8f0-446f-8a7d-fa6a8e97281a</uuid>
<memory unit='KiB'>524288</memory>
<currentMemory unit='KiB'>524288</currentMemory>
<vcpu placement='static'>2</vcpu>
<os>
    <type arch='x86_64' machine='pc'>hvm</type>
</os>
<features>
    <acpi/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
    <emulator>qemu-system-x86_64</emulator>
    <controller type='usb' index='0'/>
    <controller type='pci' index='0' model='pci-root'/>
    <memballoon model='none'/>
</devices>
<qemu:commandline>
    <qemu:arg value='drive'/>
    <qemu:arg value='file=/root/tiny/ubuntu.img'/>
</qemu:commandline>
</domain>

#virsh define peipei.xml

定义域 unnamed（从 peipei.xml）

#virsh start unnamed

域 unnamed已开始

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