On Wed, Jun 17, 2015 at 12:16:09PM +0800, Jason Wang wrote: > > > On 06/16/2015 04:16 PM, Thibaut Collet wrote: > > For a live migration my understanding is there are a suspend resume > > operation: > > - The VM image is regularly copied from the old host to the new one > > (modified pages due to VM operation can be copied several time) > > - As soon as there are only few pages to copy the VM is suspended on > > the old host, the last pages are copied, and the VM is resumed on the > > new host. Migration is not totally transparent to guest that has a > > small period of unavailability. > > But guest is not involved in the any of the migration process. Unless > the performance drop, guest should not notice the migration at all.
It is easy for backend to detect that guest started using the device, e.g. detect DRIVER_OK status set. I think that's enough to send RARPs. > Btw, please use bottom-posting which is easier for reader to understand > the context. > > Thanks I agree, please don't top-post. -- MST
