2012/7/23 Osier Yang <jy...@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.^^
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