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

[Gonglei (Arei)]

Hi,

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
(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)

Through the git bisect, I found the first bad commit is:

commit 306ec6c3cece7004429c79c1ac93d49919f1f1cc
Author: Andreas F?¤rber <address@hidden>
Date:   Tue Jul 30 03:50:44 2013 +0200

    virtio: Convert exit to unrealize
    
    Signed-off-by: Andreas F?¤rber <address@hidden>
    Signed-off-by: Paolo Bonzini <address@hidden>


Best regards,
-Gonglei