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libvirt do not create virbr0
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  1. #1
    yansolo74 Guest

    libvirt does not create virbr0

    Hi,

    I use Fedora 9 ppc64 on a powermac G5, and i am trying to setup qemu to create a virtualized machine.

    But i have a problem to start the virtual network ( NAT ) because it seems that libvirt is unable to create the virbr0 bridge.

    I am using the 2.6.25.6-55.fc9.ppc64 kernel and when i am starting libvirt manually, the only message i got is in /var/log/messages :

    Code:
    kernel: virbr0: Dropping NETIF_F_UFO since no NETIF_F_HW_CSUM feature.
    Does somebody have an idea ?

    Thanks.
    Last edited by yansolo74; 1st July 2008 at 09:26 AM.

  2. #2
    yansolo74 Guest
    Still the same with the last update of libvirt version 0.4.4-1

    I tried to start the virtual network manually :
    Code:
    # virsh net-start default
    libvir: QEMU erreur : internal error failed to set bridge STP to on
    Last edited by yansolo74; 1st July 2008 at 12:53 PM.

  3. #3
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    Did you use Network Manager ?
    If yes, try without Network Manager.
    My english is bad ? Yes i am french :)

  4. #4
    yansolo74 Guest
    Quote Originally Posted by philippe_PMA
    Did you use Network Manager ?
    If yes, try without Network Manager.
    I have already disabled Network Manager

  5. #5
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    gives us the results of :

    ifconfig
    brctl show
    virsh net-dumpxml default
    My english is bad ? Yes i am french :)

  6. #6
    yansolo74 Guest
    Quote Originally Posted by philippe_PMA
    gives us the results of :

    ifconfig
    brctl show
    virsh net-dumpxml default
    Code:
    # ifconfig
    eth0      Link encap:Ethernet  HWaddr 00:11:24:71:C9:02  
              inet adr:192.168.201.24  Bcast:192.168.201.255  Masque:255.255.255.0
              adr inet6: fe80::211:24ff:fe71:c902/64 Scope:Lien
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:494349 errors:0 dropped:0 overruns:0 frame:0
              TX packets:155051 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 lg file transmission:1000 
              RX bytes:321722686 (306.8 MiB)  TX bytes:54312768 (51.7 MiB)
              Interruption:41 Adresse de base:0xa000 
    
    lo        Link encap:Boucle locale  
              inet adr:127.0.0.1  Masque:255.0.0.0
              adr inet6: ::1/128 Scope:Hôte
              UP LOOPBACK RUNNING  MTU:16436  Metric:1
              RX packets:14714 errors:0 dropped:0 overruns:0 frame:0
              TX packets:14714 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 lg file transmission:0 
              RX bytes:781737 (763.4 KiB)  TX bytes:781737 (763.4 KiB)

    Code:
    # brctl show
    bridge name	bridge id		STP enabled	interfaces
    pan0		8000.000000000000	no
    Code:
    # virsh net-dumpxml default
    <network>
      <name>default</name>
      <uuid>4af1fbc2-bc25-599b-66c9-19a00c1ba643</uuid>
      <forward mode='nat'/>
      <bridge name='virbr0' stp='on' forwardDelay='0' />
      <ip address='192.168.122.1' netmask='255.255.255.0'>
        <dhcp>
          <range start='192.168.122.2' end='192.168.122.254' />
        </dhcp>
      </ip>
    </network>

  7. #7
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    Where this bridge come from ? pan0 !
    if you don't know what is it (pan0), try to remove it with : brctl delbr pan0
    if, it's ok try again to start libvirt with service libvirtd start
    My english is bad ? Yes i am french :)

  8. #8
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    I found what is pan0. It's for bluetooth.

    Do you want to use bluetooth ?
    With libvirt it will be better to use a physical network card (more easy).

    If you are ok to use eth0 (physical network card), perhaps you have to disable your bluetooth interface or to "inverse" the two interface in /etc/modules.conf

    For exemple :
    alias eth0 first_card
    alias eth1 secondcard
    My english is bad ? Yes i am french :)

  9. #9
    yansolo74 Guest
    Quote Originally Posted by philippe_PMA
    Where this bridge come from ? pan0 !
    if you don't know what is it (pan0), try to remove it with : brctl delbr pan0
    if, it's ok try again to start libvirt with service libvirtd start
    I think pan0 has something to do with bluetooth.
    Code:
    Jun 30 11:04:39  hcid[2190]: bridge pan0 created
    Jun 30 11:04:39  hcid[2190]: Registered manager path:/org/bluez/network
    I've deled the pan0 bridge but it's still the same.

  10. #10
    yansolo74 Guest
    Quote Originally Posted by philippe_PMA
    I found what is pan0. It's for bluetooth.

    Do you want to use bluetooth ?
    With libvirt it will be better to use a physical network card (more easy).

    If you are ok to use eth0 (physical network card), perhaps you have to disable your bluetooth interface or to "inverse" the two interface in /etc/modules.conf
    I've disabled bluetooth so now i do not have pan0 bridge anymore, but ....
    It's still the same, no virbr0 when i restart libvirtd with the same error message in /var/log/messages :

    Code:
    Jul  2 14:34:18 kernel: virbr0: Dropping NETIF_F_UFO since no NETIF_F_HW_CSUM feature.

  11. #11
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    1°)
    Do "tail -f /var/log/messages"

    2°)
    In other screen do "service libvirtd start"

    3°)
    Post here the /var/log/messages results.
    My english is bad ? Yes i am french :)

  12. #12
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    Sorry for my question : are you sure network manager is disabled ?

    chkconfig --del NetworkManager
    chkconfig --del NetworkManagerDispatcher
    reboot
    My english is bad ? Yes i am french :)

  13. #13
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    what is your kernel version ?

    uname -a
    My english is bad ? Yes i am french :)

  14. #14
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    Post the results of cat /etc/sysconfig/networking/devices/*
    My english is bad ? Yes i am french :)

  15. #15
    yansolo74 Guest
    Quote Originally Posted by philippe_PMA
    1°)
    Do "tail -f /var/log/messages"

    2°)
    In other screen do "service libvirtd start"

    3°)
    Post here the /var/log/messages results.
    Code:
    Jul  3 09:04:56  libvirtd: Shutting down on signal 15
    Jul  3 09:04:56  kernel: virbr0: Dropping NETIF_F_UFO since no NETIF_F_HW_CSUM feature.

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