On Wed, Nov 20, 2024 at 18:48:50 +0300, Nikolai Barybin via Devel wrote: > Signed-off-by: Nikolai Barybin <nikolai.barybin@xxxxxxxxxxxxx> > --- > docs/formatdomain.rst | 45 ++++++++++++++++++++++++++++++++++++++++--- > 1 file changed, 42 insertions(+), 3 deletions(-) I'll adapt the docs to conform with the changes in naming and placement of the element as well as squash it into the commit which adds the schema. > > diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst > index 18b60fe260..54a9e01034 100644 > --- a/docs/formatdomain.rst > +++ b/docs/formatdomain.rst > @@ -2708,24 +2708,38 @@ paravirtualized driver is specified via the ``disk`` element. > </backingStore> > <target dev='vdd' bus='virtio'/> > </disk> > + <disk type='file' device='disk'> > + <driver name='qemu' type='qcow2' queues='4' queue_size='256' /> > + <source file='/var/lib/libvirt/images/domain2.qcow'/> > + <backingStore type='file'> > + <format type='qcow2'/> > + <source file='/var/lib/libvirt/images/base-with-data-file.qcow'/> > + </backingStore> > + <dataFileStore type='block'> > + <format type='raw'/> > + <source dev='/dev/mapper/base2'/> > + <dataFileStore/> > + </backingStore> > + <target dev='vde' bus='virtio'/> > + </disk> > <disk type='nvme' device='disk'> > <driver name='qemu' type='raw'/> > <source type='pci' managed='yes' namespace='1'> > <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/> > </source> > - <target dev='vde' bus='virtio'/> > + <target dev='vdf' bus='virtio'/> > </disk> > <disk type='vhostuser' device='disk'> > <driver name='qemu' type='raw'/> > <source type='unix' path='/tmp/vhost-blk.sock'> > <reconnect enabled='yes' timeout='10'/> > </source> > - <target dev='vdf' bus='virtio'/> > + <target dev='vdg' bus='virtio'/> > </disk> > <disk type='vhostvdpa' device='disk'> > <driver name='qemu' type='raw'/> > <source dev='/dev/vhost-vdpa-0' /> > - <target dev='vdg' bus='virtio'/> > + <target dev='vdh' bus='virtio'/> > </disk> > </devices> > ... > @@ -3116,6 +3130,27 @@ paravirtualized driver is specified via the ``disk`` element. > accessible or its disk chain is broken, with startupPolicy 'opt> guest will drop this disk. This feature doesn't support migration currently. > > +``dataFileStore`` > + This element describes external data file store, which is represented by ``qcow2`` > + incompatible features bit and allows to store guest clusters are the external > + data file. For such images, clusters in the external data file are not refcounted. > + The following attribute is supported in ``dataFileStore``: > + > + ``type`` > + The ``type`` attribute represents the type of disk used by the data file store, > + see disk type attribute above for more details and possible values. > + > + Moreover, ``dataFileStore`` supports the following sub-elements: > + > + ``format`` > + The ``format`` element contains ``type`` attribute which specifies the > + internal format of the data file store. Only ``raw`` value is supported. > + > + ``source`` > + This element has the same structure as the ``source`` element in ``disk``. > + It specifies which file, device, or network location contains the data of > + the described data file store. > +
