F20 beta virt-manager cannot create bridged network interface

[Richard Michael]

On Mon, Nov 18, 2013 at 11:05 PM, Adam Williamson <awilliam at redhat.com> wrote:
> On Mon, 2013-11-18 at 22:52 -0500, Richard Michael wrote:
>>
>>
>>
>> On Mon, Nov 18, 2013 at 7:18 PM, Mateusz Marzantowicz
>> <mmarzantowicz at osdf.com.pl> wrote:
>>         On 19.11.2013 01:13, Richard Michael wrote:
>>         > Hello,
>>         >
>>         > I've just installed F20 beta x64 and applied all updates.
>>         >
>>         > I'm attempting to create a bridge network interface in
>>         virt-manager
>>         > (0.10.0).  I complete the "Configure network interface"
>>         dialog, and
>>         > when I click "Finish" I receive an "Input Error" with
>>         message:
>>         >
>>         > 'str' object has no attribute 'XMLDesc'
>>         >
>>         >
>>         > A very similar error (when creating a bonded interface) is
>>         mentioned
>>         > in comments #1 and #2 in a bug related to
>>         "system-config-services"
>>         > here ...
>>         >
>>         > https://bugzilla.redhat.com/show_bug.cgi?id=1028833#c2
>>         >
>>         >  ... with the suggestion to file a bug against
>>         virt-manager.  I can't
>>         > find a virt-manager bug related to this however.
>>         >
>>         >
>>         > 1/ I'll open one unless anyone has other suggestions or
>>         comments?
>>         >
>>         >
>>         > 2/ I'm new to virt-manager and wondering about a
>>         work-around; should I
>>         > investigate using virsh to create the interface hoping
>>         virt-manager
>>         > will detect it?
>>         >
>>
>>
>>         My work-around: Create bridge in NetworkManager (or directly
>>         edit config
>>         files) and then add it to virt-manager. I always wondered what
>>         is this
>>         whole bridge management in virt-manager for.
>>
>>
>>
>> Thank you for the suggestion.  I looked at this, and interface
>> creation using NetworkManager is quite different than in
>> virt-manager.  Also, I'm unsure what you mean by "add it to
>> virt-manager".  In virt-manager, I am only able to create a new
>> interface, I can't find anything to allow adding an existing bridge.
>>
>>
>> I'll open a bug, as this problem renders virt-manager nearly
>> unusable.  (It's impossible to create network interfaces.)
>
> I'm not entirely clear what you're trying to do here, but I'm still
> using
> http://www.linux-kvm.com/content/using-bridged-networking-virt-manager
> as my basic set of instructions for setting up a bridged config for KVM.
> If you just want your VMs to have internet access you don't need to do
> anything special at all - you only need to fiddle with networking
> configuration if you want them bridged rather than NAT'ed (so they
> appear on your local network as if they were 'real' machines connected
> to the router).

Thanks for your reply Adam.

Ah indeed, I should have thought of creating the bridge manually, as
discussed in the link you posted.  Following those instructions has
helped, virt-manager sees the manually bridge as a shareable physical
device.

Aside, I'm wondering if F20 should have already created a bridge for
libvirt (e.g., should I need to create it myself?).  I selected the
'Virtualization' group.  Perhaps this is related to Chris' down-thread
comment that not all required packages are in the group?

Thanks again!

Regards,
Richard

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