libvirt/tests/qemuxml2argvdata/disk-source-fd.xml
Peter Krempa 98bd201678 conf: Add 'fdgroup' attribute for 'file' disks
The 'fdgroup' will allow users to specify a passed FD (via the
'virDomainFDAssociate()' API) to be used instead of opening a path.
This is useful in cases when e.g. the file is not accessible from inside
a container.

Since this uses the same disk type as when we open files via names this
patch also introduces a hypervisor feature which the hypervisor asserts
that code paths are ready for this possibility.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2023-01-09 14:59:42 +01:00

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XML

<domain type='qemu'>
<name>QEMUGuest1</name>
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>219136</memory>
<currentMemory unit='KiB'>219136</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64' 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-x86_64</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/path/to/blah' fdgroup='testgroup2'/>
<target dev='vde' bus='virtio'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/rhel7.1484071880' fdgroup='testgroup5'/>
<backingStore type='file'>
<format type='qcow2'/>
<source file='/var/lib/libvirt/images/rhel7.1484071877' fdgroup='testgroup6'/>
<backingStore type='file'>
<format type='qcow2'/>
<source file='/var/lib/libvirt/images/rhel7.1484071876'/>
<backingStore/>
</backingStore>
</backingStore>
<target dev='vdf' bus='virtio'/>
</disk>
<controller type='usb'/>
<controller type='pci' model='pci-root'/>
<memballoon model='virtio'/>
</devices>
</domain>