On Wed, Oct 21, 2015 at 7:37 PM, Lan Tianyu <tianyu.lan@xxxxxxxxx> wrote: > This patchset is to propose a new solution to add live migration support > for 82599 SRIOV network card. > In our solution, we prefer to put all device specific operation into VF and > PF driver and make code in the Qemu more general. [...] > Service down time test > So far, we tested migration between two laptops with 82599 nic which > are connected to a gigabit switch. Ping VF in the 0.001s interval > during migration on the host of source side. It service down > time is about 180ms. So... what would you expect service down wise for the following solution which is zero touch and I think should work for any VF driver: on host A: unplug the VM and conduct live migration to host B ala the no-SRIOV case. on host B: when the VM "gets back to live", probe a VF there with the same assigned mac next, udev on the VM will call the VF driver to create netdev instance DHCP client would run to get the same IP address + under config directive (or from Qemu) send Gratuitous ARP to notify the switch/es on the new location for that mac. Or. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
