[libvirt-users] INTERNAL ERROR:can not attach network interface for vm

[Gao Yongwei]

2012/7/23 Osier Yang <jyang at redhat.com>:
> On 2012年07月23日 17:24, Gao Yongwei wrote:
>>
>> hello,i got a error message when use virsh attach-interface for a vm:
>>
>> first, list the vm's interface,there's no interface now.
>> virsh # domiflist ubuntum-124
>> Interface  Type       Source     Model       MAC
>> -------------------------------------------------------
>>
>> then,i did an attach-interface action:
>> virsh # attach-interface ubuntum-124  bridge br0 --persistent
>> Interface attached successfully
>>
>> virsh # domiflist ubuntum-124
>> Interface  Type       Source     Model       MAC
>> -------------------------------------------------------
>> vnet0      bridge     br0        -           52:54:00:3d:d1:ea
>>
>> second,detach the interface:
>> virsh # detach-interface ubuntum-124 bridge
>> Interface detached successfully
>>
>> virsh # domiflist ubuntum-124
>> Interface  Type       Source     Model       MAC
>> -------------------------------------------------------
>>
>> 3rd,attach interface again,at this step ,i got erros like below:
>> virsh # attach-interface ubuntum-124  bridge br0 --persistent
>> error: Failed to attach interface
>> error: internal error unable to execute QEMU command 'device_add':
>> Duplicate ID 'net0' for device
>>
>> virsh # attach-interface ubuntum-124  bridge br0
>> error: Failed to attach interface
>> error: internal error unable to execute QEMU command 'device_add':
>> Duplicate ID 'net0' for device
>>
>> virsh # version
>> Compiled against library: libvir 0.9.10
>> Using library: libvir 0.9.10
>> Using API: QEMU 0.9.10
>> Running hypervisor: QEMU 0.12.1
>>
>
> It's known bug of qemu, there is some race there, though I can't
> tell what it is exactly. I guess if you sleep several secs
> before attaching it again, you will succeed. Or you might want to
> ask in qemu list.
>
> Regards,
> Osier
>
>
thanks,i'll try it as you say to get more info.^^