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Marco Strullato

2007-Oct-08 08:12 UTC

[Xen-users] network problem: Cannot find network for bridge

Hi all, I have a network problem:
Dom0 has:
Dom1: linux paravirtualized
Dom2: winxp hvm

It worked well but now winxp can not connect to network:

Dom0 has eth0, lo, peth0, vif1.0 and vif3.0
>From Dom0:[root@localhost xen]# xm network-list WinXP --long
(0
    ((backend-id 0)
        (mac 00:16:3e:3f:54:42)
        (handle 0)
        (state 1)
        (backend /local/domain/0/backend/vif/3/0)
    )
)

[root@localhost xen]# xm network-list Linux01 --long
(0
    ((backend-id 0)
        (mac 00:16:3e:58:56:65)
        (handle 0)
        (state 4)
        (backend /local/domain/0/backend/vif/1/0)
        (tx-ring-ref 109)
        (rx-ring-ref 526)
        (event-channel 10)
        (request-rx-copy 1)
        (feature-rx-notify 1)
        (feature-sg 1)
        (feature-gso-tcpv4 1)
    )
)

[root@localhost xen]# brctl show
bridge name     bridge id               STP enabled     interfaces
eth0            8000.00155880c616       no              vif3.0
                                                        vif1.0
                                                        peth0

>From xend.log
[2007-10-08 09:58:47 3558] ERROR (XendDomainInfo:2328) bridge_to_network
Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/xen/xend/XendDomainInfo.py",
line
2326, in get_dev_xenapi_config
    config.get(''bridge'')).get_uuid()
  File "/usr/lib/python2.5/site-packages/xen/xend/XendNode.py", line
510, in
bridge_to_network
    raise Exception(''Cannot find network for bridge %s'' %
bridge)
Exception: Cannot find network for bridge xenbr0
[2007-10-08 09:58:47 3558] ERROR (XendDomainInfo:2328) bridge_to_network
Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/xen/xend/XendDomainInfo.py",
line
2326, in get_dev_xenapi_config
    config.get(''bridge'')).get_uuid()
  File "/usr/lib/python2.5/site-packages/xen/xend/XendNode.py", line
510, in
bridge_to_network
    raise Exception(''Cannot find network for bridge %s'' %
bridge)
Exception: Cannot find network for bridge xenbr0
[2007-10-08 09:58:47 3558] INFO (SrvServer:180) unix
path=/var/lib/xend/xend-socket



What do you suggest me to solve the problem?

Thanks

Marco


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Fajar A. Nugraha

2007-Oct-08 08:27 UTC

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Re: [Xen-users] network problem: Cannot find network for bridge

Marco Strullato wrote:> Hi all, I have a network problem:
> Dom0 has:
> Dom1: linux paravirtualized
> Dom2: winxp hvm
>
> It worked well but now winxp can not connect to network:
>
> Dom0 has eth0, lo, peth0, vif1.0 and vif3.0
>That''s weird. You should also have some tap interfaces for HVM domains.
Do you remember to put "type=ioemu" on winxp''s vif config
line?
> [root@localhost xen]# brctl show
> bridge name     bridge id               STP enabled     interfaces
> eth0            8000.00155880c616       no              vif3.0
>                                                         vif1.0
>                                                         peth0
>
>It says your bridge is called eth0
> From xend.log
>
> Exception: Cannot find network for bridge xenbr0But xend.log says you''re using xenbr0 in your config file.

The befault network-bridge script should create a bridge called xenbr0.
If you use a custom bridge script, you should modify your domU config
accordingly. It should be (on your setup) something like

vif = [ ''type=ioemu, mac=SOME_FIXED_MAC_ADDRESS_HERE,
bridge=eth0'' ]

Regards,

Fajar



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http://lists.xensource.com/xen-users

Marco Strullato

2007-Oct-08 08:41 UTC

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Re: [Xen-users] network problem: Cannot find network for bridge

I''ve created virtual machines with virt-manager and now I have to
export,
change and re-import xml configurations: I don''t have a regular xen
configuration file but and xml. Here''s the mine.

<domain type=''xen'' id=''2''>
  <name>WinXP</name>
  <uuid>f3834331-f045-4b4b-90ad-0a57ec790248</uuid>
  <os>
    <type>hvm</type>
    <loader>/usr/lib/xen/boot/hvmloader</loader>
    <boot dev=''hd''/>
  </os>
  <memory>1562624</memory>
  <vcpu>2</vcpu>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset=''utc''/>
  <devices>
    <emulator>/usr/lib/xen/bin/qemu-dm</emulator>
    <interface type=''bridge''>
      <source bridge=''xenbr0''/>
      <target dev=''vif2.0''/>
      <mac address=''00:16:3e:3f:54:42''/>
      <script path=''vif-bridge''/>
    </interface>
    <disk type=''block'' device=''disk''>
      <driver name=''phy''/>
      <source dev=''/dev/VolGroup00/WinXP''/>
      <target dev=''hda''/>
    </disk>
    <disk type=''block'' device=''cdrom''>
      <driver name=''phy''/>
      <source dev=''/dev/cdrom''/>
      <target dev=''hdc''/>
      <readonly/>
    </disk>
    <input type=''mouse'' bus=''ps2''/>
    <graphics type=''vnc'' port=''5900''
keymap=''it''/>
  </devices>
</domain>

I know that I should have the bridge xenbr0 but I don''t know why...
Where
should I check?
It''s stange beacuse the linux vm''s network works well.

Suggestions?

Thanks
Marco


2007/10/8, Fajar A. Nugraha <fajar@telkom.net.id>:>
> Marco Strullato wrote:
> > Hi all, I have a network problem:
> > Dom0 has:
> > Dom1: linux paravirtualized
> > Dom2: winxp hvm
> >
> > It worked well but now winxp can not connect to network:
> >
> > Dom0 has eth0, lo, peth0, vif1.0 and vif3.0
> >
> That''s weird. You should also have some tap interfaces for HVM
domains.
> Do you remember to put "type=ioemu" on winxp''s vif
config line?
>
> > [root@localhost xen]# brctl show
> > bridge name     bridge id               STP enabled     interfaces
> > eth0            8000.00155880c616       no              vif3.0
> >                                                         vif1.0
> >                                                         peth0
> >
> >
> It says your bridge is called eth0
>
> > From xend.log
> >
> > Exception: Cannot find network for bridge xenbr0
> But xend.log says you''re using xenbr0 in your config file.
>
> The befault network-bridge script should create a bridge called xenbr0.
> If you use a custom bridge script, you should modify your domU config
> accordingly. It should be (on your setup) something like
>
> vif = [ ''type=ioemu, mac=SOME_FIXED_MAC_ADDRESS_HERE,
bridge=eth0'' ]
>
> Regards,
>
> Fajar
>
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>

_______________________________________________
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Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Fajar A. Nugraha

2007-Oct-08 08:54 UTC

head link

Re: [Xen-users] network problem: Cannot find network for bridge

Marco Strullato wrote:> I''ve created virtual machines with virt-manager and now I have to
> export, change and re-import xml configurations: I don''t have a
> regular xen configuration file but and xml. Here''s the mine.
>
>     <interface type=''bridge''>
>       <source bridge=''xenbr0''/>
Try export, change this to "bridge=''eth0''", and
re-import.

>
> I know that I should have the bridge xenbr0 but I don''t know
why...
> Where should I check?
What dom0 distro do you use? How did you install Xen?> It''s stange beacuse the linux vm''s network works well.
>Check your linux config, it should say something like
"bridge=''eth0''"

Regards,

Fajar

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Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Marco Strullato

2007-Oct-08 14:02 UTC

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Re: [Xen-users] network problem: Cannot find network for bridge

Hi, I don''t have much time so I solved the problem reinstalling dom0...

2007/10/8, Fajar A. Nugraha <fajar@telkom.net.id>:>
> Marco Strullato wrote:
> > I''ve created virtual machines with virt-manager and now I
have to
> > export, change and re-import xml configurations: I don''t have
a
> > regular xen configuration file but and xml. Here''s the mine.
> >
>
> >     <interface type=''bridge''>
> >       <source bridge=''xenbr0''/>
>
> Try export, change this to "bridge=''eth0''", and
re-import.
>
>
> >
> > I know that I should have the bridge xenbr0 but I don''t know
why...
> > Where should I check?
> What dom0 distro do you use? How did you install Xen?
> > It''s stange beacuse the linux vm''s network works
well.
> >
> Check your linux config, it should say something like
"bridge=''eth0''"
>
> Regards,
>
> Fajar
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>

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Xen users - Oct 2007 - network problem: Cannot find network for bridge

[Xen-users] network problem: Cannot find network for bridge

Re: [Xen-users] network problem: Cannot find network for bridge

Re: [Xen-users] network problem: Cannot find network for bridge

Re: [Xen-users] network problem: Cannot find network for bridge

Re: [Xen-users] network problem: Cannot find network for bridge