On 9/3/2016 3:18 AM, Paolo Bonzini wrote:
On 02/09/2016 20:33, Kirti Wankhede wrote:
<Alex> We could even do:
echo $UUID1:$GROUPA > create
where $GROUPA is the group ID of a previously created mdev device into which $UUID1 is to be created and added to the same group.
</Alex>
From the point of view of libvirt, I think I prefer Alex's idea. <group> could be an additional element in the nodedev-create XML:
<device> <name>my-vgpu</name> <parent>pci_0000_86_00_0</parent> <capability type='mdev'> <type id='11'/> <uuid>0695d332-7831-493f-9e71-1c85c8911a08</uuid> <group>group1</group> </capability> </device>
(should group also be a UUID?)
No, this should be a unique number in a system, similar to iommu_group.
Since John brought up the topic of minimal XML, in this case it will be like this:
<device> <name>my-vgpu</name> <parent>pci_0000_86_00_0</parent> <capability type='mdev'> <type id='11'/> </capability> </device>
The uuid will be autogenerated by libvirt and if there's no <group> (as is common for VMs with only 1 vGPU) it will be a single-device group.
Right. Kirti.
Thanks,
Paolo