Re: support for live migration with PCI passthrough devices
On 8/25/20 1:40 PM, Henry lol wrote:
Hi guys,
I'm wondering whether libvirt supports live migration for the VM with
PCI passthrough devices.
or it must be assumed before live migration that all passthrough devices
be unplugged?
Unfortunately, this is still not supported. The problem is that PCI
devices themselves are not capable of dumping their internal state and
restoring from it on destination.
There is a long thread started last month that discuss what the
interface should look like, but at this point I guess we are still far
away from it:
https://www.redhat.com/archives/libvir-list/2020-July/msg00675.html
If so, all unplugged devices should be manually hot-plugged to the VM
after migration??
This is the usual mode of operation, yes.
Michal