mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-10-30 09:53:10 +00:00
154df5840d
In certain specific cases it might be beneficial to be able to control the metadata caching of storage image format drivers of a hypervisor. Introduce XML machinery to set the maximum size of the metadata cache which will be used by qemu's qcow2 driver. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
47 lines
1.5 KiB
XML
47 lines
1.5 KiB
XML
<domain type='qemu'>
|
|
<name>QEMUGuest1</name>
|
|
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
|
|
<memory unit='KiB'>219100</memory>
|
|
<currentMemory unit='KiB'>219100</currentMemory>
|
|
<vcpu placement='static'>1</vcpu>
|
|
<os>
|
|
<type arch='i686' machine='pc'>hvm</type>
|
|
<boot dev='hd'/>
|
|
</os>
|
|
<clock offset='utc'/>
|
|
<on_poweroff>destroy</on_poweroff>
|
|
<on_reboot>restart</on_reboot>
|
|
<on_crash>destroy</on_crash>
|
|
<devices>
|
|
<emulator>/usr/bin/qemu-system-i386</emulator>
|
|
<disk type='file' device='disk'>
|
|
<driver name='qemu' type='qcow2' cache='none'>
|
|
<metadata_cache>
|
|
<max_size>12345</max_size>
|
|
</metadata_cache>
|
|
</driver>
|
|
<source file='/tmp/QEMUGuest1.img'/>
|
|
<target dev='hda' bus='ide'/>
|
|
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
|
|
</disk>
|
|
<disk type='file' device='disk'>
|
|
<driver name='qemu' type='qcow2' cache='none'/>
|
|
<source file='/tmp/QEMUGuest2.img'/>
|
|
<backingStore type='file'>
|
|
<format type='qcow2'>
|
|
<metadata_cache>
|
|
<max_size unit='kiB'>1024</max_size>
|
|
</metadata_cache>
|
|
</format>
|
|
<source file='/tmp/backing-store.qcow'/>
|
|
<backingStore/>
|
|
</backingStore>
|
|
<target dev='hdb' bus='ide'/>
|
|
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
|
|
</disk>
|
|
<controller type='usb' index='0'/>
|
|
<controller type='ide' index='0'/>
|
|
<memballoon model='virtio'/>
|
|
</devices>
|
|
</domain>
|