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

[Gonglei (Arei)]

Hi,

> 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.
> 
Maybe just because Peter Maydell merge remote-tracking branch. But it doesn't 
matter.

> > (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
> 
I got the QEMU 2.0.0 version from http://wiki.qemu.org/Download

The issue was reproduced perforce:
UVP:/mnt/sdb/gonglei/code/qemu-2.0.0/x86_64-softmmu #./qemu-system-x86_64 
-enable-kvm -m 4096 -smp 4 -name sles \
 -boot c -drive file=/mnt/sdb/gonglei/image/sles-3.img -vnc 0.0.0.0:10 -monitor 
stdio
QEMU 2.0.0 monitor - type 'help' for more information
(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)

Anything wrong? Thanks!

Best regards,
-Gonglei