Hello, Am 22.11.2017 um 20:41 schrieb Dr. David Alan Gilbert: > * Paolo Bonzini (pbonz...@redhat.com) wrote: >> On 06/11/2017 12:09, Stefan Priebe - Profihost AG wrote: >>> HI Paolo, >>> >>> could this patchset be related? >> >> Uh oh, yes it should. Jason, any ways to fix it? I suppose we need to >> disable UFO in the newest machine types, but do we also have to do >> (software) UFO in vhost-net and QEMU for migration compatibility? > > Was there a solution to this?
it will be this one: https://patchwork.ozlabs.org/patch/840094/ Stefan > Dave > >> Thanks, >> >> Paolo >> >>> Greets, >>> Stefan >>> >>> Am 06.11.2017 um 10:52 schrieb Stefan Priebe - Profihost AG: >>>> Hi Paolo, >>>> >>>> Am 06.11.2017 um 10:49 schrieb Paolo Bonzini: >>>>> On 06/11/2017 10:48, Stefan Priebe - Profihost AG wrote: >>>>>> Hi Paolo, >>>>>> >>>>>> Am 06.11.2017 um 10:40 schrieb Paolo Bonzini: >>>>>>> On 06/11/2017 10:38, Stefan Priebe - Profihost AG wrote: >>>>>>>> Hello, >>>>>>>> >>>>>>>> i've upgraded some servers from kernel 4.4 to 4.12 - both running Qemu >>>>>>>> 2.9.1. >>>>>>>> >>>>>>>> If i migrate a VM from a host running kernel 4.4 to a host running 4.12 >>>>>>>> i get: >>>>>>>> >>>>>>>> kvm: virtio-net: saved image requires TUN_F_UFO support >>>>>>>> kvm: Failed to load virtio-net-device:tmp >>>>>>>> kvm: Failed to load virtio-net:virtio >>>>>>>> kvm: error while loading state for instance 0x0 of device >>>>>>>> '0000:00:12.0/virtio-net' >>>>>>>> kvm: load of migration failed: Invalid argument >>>>>>>> >>>>>>>> >>>>>>>> while migrating from 4.12 to 4.4 works fine. >>>>>>>> >>>>>>>> Can anybody help? Is this expected? >>>>>>> >>>>>>> Can you check why peer_has_ufo failed (in hw/net/virtio-net.c)? >>>>>> >>>>>> May be - how can i archieve this? Patching the code is not a problem if >>>>>> you can give me a hint. >>>>>> >>>>>>> Also, did this ioctl fail when the tap device was set up on the 4.12 >>>>>>> destination? >>>>>>> int tap_probe_has_ufo(int fd) >>>>>>> { >>>>>>> unsigned offload; >>>>>>> >>>>>>> offload = TUN_F_CSUM | TUN_F_UFO; >>>>>>> >>>>>>> if (ioctl(fd, TUNSETOFFLOAD, offload) < 0) >>>>>>> return 0; >>>>>>> >>>>>>> return 1; >>>>>>> } >>>>>> >>>>>> Should there be any kernel output or how can i detect / check it? >>>>> >>>>> For both, the simplest answer is probably just using printf. >>>> >>>> arg i missed an important part. The kernel is an opensuse SLE15 one. >>>> >>>> I've seen it contains the following patchset: >>>> https://www.spinics.net/lists/netdev/msg443821.html >>>> >>>> Greets, >>>> Stefan >>>> >> >> > -- > Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK >
