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Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support
From: |
Stefan Priebe - Profihost AG |
Subject: |
Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support |
Date: |
Mon, 6 Nov 2017 10:48:31 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 |
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?
Greets,
Stefan
> Thanks,
>
> Paolo
>
- [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Stefan Priebe - Profihost AG, 2017/11/06
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Paolo Bonzini, 2017/11/06
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support,
Stefan Priebe - Profihost AG <=
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Paolo Bonzini, 2017/11/06
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Stefan Priebe - Profihost AG, 2017/11/06
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Stefan Priebe - Profihost AG, 2017/11/06
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Paolo Bonzini, 2017/11/06
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Stefan Priebe - Profihost AG, 2017/11/08
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Jason Wang, 2017/11/08
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Stefan Priebe - Profihost AG, 2017/11/08
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Jason Wang, 2017/11/08
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Paolo Bonzini, 2017/11/08
- Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support, Jason Wang, 2017/11/08