9:39 a.m.
Hello,
I am trying to run a virtual machine with qemu-kvm and libvirt as a
user. In order to start the virtual machine I setup a tap device
manually, add it to the bridge and activate it via ifconfig. But I
cannot tell libvirt to not try to add the definded tap device to the
bridge by itself. It always fails telling me it cannot add tap0 to br0.
Thats the xml snippet for defining the network:
<interface type='bridge'>
<mac address='54:52:00:38:75:dd'/>
<source bridge='br0'/>
<target dev='tap0'/>
<model type='virtio'/>
</interface>
Here I would like do define "script=no" to get an output like: -net
tap,vlan=0,ifname=tap0,script=no when libvirt launches the vm.
Regards,
Christian
--
Christian Spann - http://www-vs.informatik.uni-ulm.de/~spann
10:09 a.m.
New subject: [libvirt-users] Livemigrate problems.
Hello people.
I had 4 servers (bart,homer, lisa and abraham) where livemigrate
went without problems: I was able to make them play beach-volley
with a vm instance whose image is on an NFS file system.
Then I add a couple more, marge and maggie. I can do things like
virsh -c qemu://maggie/system list
or launch an interactive session without any problem, so the TLS
channel should be properly configured.
But when I try to run something like
virsh migrate --live "one-24" qemu://maggie/system
I get a nice "error: operation failed: failed to parse XML" error.
There is the same error when OpenNebula tries to restore a vm
from a checkpoint on the same machine. How can I fix this. I
need all the machines up and running.
--
ing. Gian Uberto Lauri
Ricercatore / Reasearcher
Laboratorio Ricerca e Sviluppo / Research & Development Lab.
Area Calcolo Distribuito / Distributed Computation Area
GianUberto.Lauri(a)eng.it
Engineering Ingegneria Informatica spa
Corso Stati Uniti 23/C, 35127 Padova (PD)
Tel. +39-049.8283.571 | main(){printf(&unix["\021%six\012\0"],
Fax +39-049.8283.569 | (unix)["have"]+"fun"-0x60);}
Skype: gian.uberto.lauri | David Korn, AT&T Bell Labs
http://www.eng.it | ioccc best One Liner, 1987
12:21 p.m.
Hello again,
Digging into the source code with my colleague we found out that setting
<script path='no'/> does the trick. But to get this flag interpreted one
has to select the interface type "ethernet". Otherwise libvirt will
ignore the script element and try to add the tap device to the bridge by
itself.
Unfortunately libvirt does currently not support the downscript
parameter of qemu-kvm. But this only results in a error msg when
shutting down the vm. If I find some time the next days I will try to
produce a patch for this.
Regards,
Christian
Am 16.05.2011 16:39, schrieb Christian Spann:
Hello,
I am trying to run a virtual machine with qemu-kvm and libvirt as a
user. In order to start the virtual machine I setup a tap device
manually, add it to the bridge and activate it via ifconfig. But I
cannot tell libvirt to not try to add the definded tap device to the
bridge by itself. It always fails telling me it cannot add tap0 to br0.
Thats the xml snippet for defining the network:
<interface type='bridge'>
<mac address='54:52:00:38:75:dd'/>
<source bridge='br0'/>
<target dev='tap0'/>
<model type='virtio'/>
</interface>
Here I would like do define "script=no" to get an output like: -net
tap,vlan=0,ifname=tap0,script=no when libvirt launches the vm.
Regards,
Christian
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participants (2)
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Christian Spann -
Gian Uberto Lauri