Hello,
In current PCI passthrough implementation, a pci device is only allowed to be assigned to a instance while the instance is being created, it is not allowed to be assigned or removed from the instance while the instance is running or stop. Besides, I noticed that the basic ability--remove a pci device from the instance(not by delete the flavor) has never been implemented or prompted by anyone. The current implementation: https://wiki.openstack.org/wiki/Pci_passthrough I have tested the nic hotplug on my experimental environment, it's supported by the latest libvirt and qemu. My problem is, why the pci device hotplug is not proposed in openstack until now, and is there anyone planning to do the pci device hotplug? Thanks, gouzongmei
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