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5edfcaae6f
The new introduced optional attribute "copy_on_read</code> controls whether to copy read backing file into the image file. The value can be either "on" or "off". Copy-on-read avoids accessing the same backing file sectors repeatedly and is useful when the backing file is over a slow network. By default copy-on-read is off.
51 lines
1.6 KiB
XML
51 lines
1.6 KiB
XML
<domain type='qemu'>
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<name>test</name>
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<memory>1048576</memory>
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<vcpu>1</vcpu>
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<os>
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<type arch='x86_64' machine='pc-0.13'>hvm</type>
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<boot dev='cdrom'/>
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<boot dev='hd'/>
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<bootmenu enable='yes'/>
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</os>
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<clock offset='utc'/>
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<on_poweroff>destroy</on_poweroff>
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<on_reboot>restart</on_reboot>
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<on_crash>restart</on_crash>
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<devices>
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<emulator>/usr/bin/qemu</emulator>
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<disk type='file' device='disk'>
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<driver name='qemu' type='qcow2' copy_on_read='on'/>
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<source file='/var/lib/libvirt/images/f14.img'/>
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<target dev='vda' bus='virtio'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
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</disk>
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<disk type='file' device='cdrom'>
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<driver name='qemu' type='raw'/>
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<source file='/var/lib/libvirt/Fedora-14-x86_64-Live-KDE.iso'/>
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<target dev='hdc' bus='ide'/>
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<readonly/>
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<address type='drive' controller='0' bus='1' unit='0'/>
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</disk>
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<interface type='user'>
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<mac address='52:54:00:e5:48:58'/>
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<model type='virtio'/>
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<driver name='vhost' txmode='iothread'/>
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</interface>
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<controller type='virtio-serial' index='0'>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
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</controller>
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<serial type='pty'>
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<target port='0'/>
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</serial>
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<console type='pty'>
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<target type='serial' port='0'/>
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</console>
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<graphics type='vnc' port='5091' autoport='no' listen='127.0.0.1'/>
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<video>
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<model type='vga' vram='9216' heads='1'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
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</video>
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</devices>
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</domain>
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