On 26.02.2010, at 15:12, Alexander Graf wrote:

> Hi list,
> 
> While trying to upgrade some internal infrastructure to qemu-kvm-0.12 I 
> stumbled across this really weird problem that I see with current qemu-kvm 
> git too:
> 
> I start qemu-kvm using:
> 
> ./qemu-system-x86_64 -L ../pc-bios/ -m 512 -net nic,model=virtio -net 
> tap,ifname=tap0,script=/bin/true -snapshot sles11.qcow2 -vnc :0 -monitor stdio
> 
> The system boots up just fine, networking works.
> 
> On the qemu monitor I then issue:
> 
> (qemu) pci_add auto storage file=/tmp/image.raw,if=virtio
> 
> after which I get a fully functional virtio block device, but the network 
> stops sending/receiving packets.
> 
> The same thing with qemu-kvm-0.10 works just fine. Has anyone seen this 
> before?

Same thing happens when hotplug only:

pci_add auto nic model=virtio,vlan=0

-> network works

pci_add auto storage file=/tmp/image.raw,if=virtio

-> network stops working

pci_add auto nic model=virtio,vlan=0

-> network works again on the new device


Alex--
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