Re: [Qemu-devel] [Crucial bug]Qemu-2.0.0 do not support virtio-net hot plug/unplug exceed two times

[Paolo Bonzini]

Il 26/04/2014 10:56, Gonglei (Arei) ha scritto:
> Public bug reported:
>
> I want to repeated hot-plug/unplug the virtio-net in the latest qemu upstream
> (commit 839a5547574e57cce62f49bfc50fe1f04b00589a), but I am failed at the
> second time hot plug the virtio-net to guest.
>
> Then I tried to use Qemu-2.0.0 release version, but I got the error too.
>
> Cmdline for vm:
>
> /mnt/sdb/gonglei/qemu/x86_64-softmmu/qemu-system-x86_64 -enable-kvm -m 4096 
> -smp 4 -name sles-et-boot c -drive file=/mnt/sdb/gonglei/image/ sles-3.img -vnc 
> 0.0.0.0:10 -monitor stdio
> QEMU 1.7.50 monitor - type 'help' for more information

For commit 839a5547574e57cce62f49bfc50fe1f04b00589a you should have 
gotten 1.7.90 as the version number.

> (qemu) device_add virtio-net-pci,id=net1
> (qemu) device_del net1
> (qemu) device_add virtio-net-pci,id=net1
> Duplicate ID 'net1' for device
> (qemu)

I cannot reproduce this on Fedora running the 2.0.0 package from the 
virt-preview repository (qemu-system-x86-2.0.0-2.fc20.x86_64).

For what it's worth, I get this for --version:

$ qemu-system-x86_64 --version
QEMU emulator version 2.0.0, Copyright (c) 2003-2008 Fabrice Bellard

and likewise, when starting QEMU with "-monitor stdio":

QEMU 2.0.0 monitor - type 'help' for more information

Paolo