[et-mgmt-tools] Re: lot's of trouble using virt-manager and virt-install with qemu

[Source]

On 4/26/07, Daniel P. Berrange <berrange at redhat.com> wrote:
>
> On Thu, Apr 26, 2007 at 04:30:29PM +0530, Source wrote:
> > Little bit of surfing over internet revelaed that virt-install will have
> to
> > be given --connect option. Okay no problem.
> > And yeah I found the rpm for kvm and qemu which when I install give me
> > /usr/bin/qemu-kvm and other required stuff. Now I have this question.
> Why
> > don't I get qemu-kvm built when I compile from source code? I am getting
> by
> > installing the rpm.
>
> I've no idea - that's very odd
>
> > Unable to complete install 'libvirt.libvirtError virDomainCreateLinux()
> > failed internal error Network 'default' not active
> > Traceback (most recent call last):
> >  File "/usr/share/virt-manager/virtManager/create.py", line 677, in
> > do_install
> >    dom = guest.start_install(False, meter = meter)
> >  File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 649, in
> > start_install
> >    return self._do_install(consolecb, meter)
> >  File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 666, in
> > _do_install
> >    self.domain = self.conn.createLinux(install_xml, 0)
> >  File "/usr/lib/python2.4/site-packages/libvirt.py", line 480, in
> > createLinux
> >    if ret is None:raise libvirtError('virDomainCreateLinux() failed',
> > conn=self)
> > libvirtError: virDomainCreateLinux() failed internal error Network
> 'default'
> > not active
> > '




Hmm, virbr0 corresponds to the default network, so not sure why the device
> would be present if it were not active. Can you show 'virsh net-list
> --all'
> One possibility I can think of is that something else had created the
> virbr0
> device before libvirt_qemud started & thus prevented it from starting its
> own default network. A simple reboot to clear out an pre-existing network
> state might just do the trick there.


Thanks. You were right. I had to reboot and it worked. Don't know how it was
not working. And that command I ran virsh net-list --all before the reboot
it didn't showed anything in the list.
I am trying to install but it seems full virtualization is more demanding
on  physical RAM given. I will try to get more RAM soon.

>
> > I found that I have virbr0 active during that time.
> >
> > virbr0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00
> >          inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:
> 255.255.255.0
> >          inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
> >          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> >          TX packets:44 errors:0 dropped:0 overruns:0 carrier:0
> >          collisions:0 txqueuelen:0
> >          RX bytes:0 (0.0 b)  TX bytes:8486 (8.2 KiB)
> >
> > And I also found it as saying <name>default</name> in
> > /etc/libvirt/qemu/networks/default.xml. Then why isn't virt-manager
> getting
> > it? Or is there something else to tell?
>
> That is correct XML file to have.
>
> > One more thing during virt-manager network select step I was not getting
> > showed any Shared physical device. How I can create it? I have to
> manually
> > create a device and bridge it to my real ethernet device?
>
> A shared physical device, is any real NIC which is enslaved as part of a
> bridge.
> If you were using Xen, then the Xen startup scripts automatically put
> 'eth0'
> into a bridge 'xenbr0'. With non-Xen we don't try to second guess what the
> admin
> might want for their network setup, so we don't touch the real NICs
> ourselves.
> If you want to have a shared physical device available then you can use
> the
> regular distro provided network scripts, eg creating a suitable config
> file for
> the bridge device at /etc/sysconfig/network-scripts/ifcfg-br0 and then in
> the
> ifcfg-eth0  file setting BRIDGE=br0
>
> Regards,
> Dan.
> --
> |=- Red Hat, Engineering, Emerging Technologies, Boston.  +1 978 392 2496
> -=|
> |=-           Perl modules: http://search.cpan.org/~danberr/
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>
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