Re: [libvirt-users] Error starting domain: internal error: Unable to add port vnet0 to OVS bridge br0
12:31 p.m.
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On 3/26/19 10:03 AM, Harsh Gondaliya wrote:
Mar 26 19:25:01 dpdk-OptiPlex-5040 libvirtd.service: 20423: error :
virCommandWait:2553 : internal error: Child process (ovs-vsctl
--timeout=5 -- --if-exists del-port vnet0 -- add-port br0 vnet0 -- set
Interface vnet0 'external-ids:attached-mac="52:54:00:90:c6:c3"' -- set
Interface vnet0
'external-ids:iface-id="a9700eff-03a7-4c47-a112-429fc20677a2"' -- set
Interface vnet0
'external-ids:vm-id="41b4eef0-b820-41da-9034-9de22e1379e0"' -- set
Interface vnet0 external-ids:iface-status=active) unexpected exit status
126:
*
*
*libvirt: error : cannot execute binary ovs-vsctl: Permission denied*
Mar 26 19:25:01 dpdk-OptiPlex-5040 kernel: [ 1932.243181] audit:
type=1400 audit(1553608501.701:59): apparmor="DENIED"
operation="exec"
profile="/usr/sbin/libvirtd" name="/usr/local/bin/ovs-vsctl"
pid=20679
comm="libvirtd" requested_mask="x" denied_mask="x" fsuid=0
ouid=0
AppArmor is prohibiting it for some reason. I don't run debian or
ubuntu, so I don't have any idea how AppArmor works. Possibly someone
else on the list knows (or maybe you could search for help on AppArmor
somewhere).
Mar 26 19:25:01 dpdk-OptiPlex-5040 libvirtd.service: 20423: debug :
virCommandRun:2280 : Result status 0, stdout: '' stderr: 'libvirt:
error : cannot execute binary ovs-vsctl: Permission denied#012'
Mar 26 19:25:01 dpdk-OptiPlex-5040 libvirtd.service: 20423: error :
virNetDevOpenvswitchAddPort:155 : internal error: Unable to add port
vnet0 to OVS bridge br0
Mar 26 19:25:01 dpdk-OptiPlex-5040 NetworkManager[1096]: <info>
[1553608501.7126] devices removed (path: /sys/devices/virtual/net/vnet0,
iface: vnet0)
libvrt does not have permissions to execute ovs-vsctl. How can I get
this issue sorted out?
On Wed, Mar 20, 2019 at 12:10 AM Laine Stump <laine(a)redhat.com
<mailto:laine@redhat.com>> wrote:
On 3/15/19 3:21 AM, Harsh Gondaliya wrote:
> I have installed OVS from sources using the installation steps
mentioned
> on this link:
http://docs.openvswitch.org/en/latest/intro/install/general/
>
> I had installed libvrt, KVM, QEMU and all the necessary packages
using
> apt-get. My KVM-QEMU hypervisor has been running well.
>
> To add a VM with the port attached to OVS bridge I changed the XML
> domain file as per the instructions on this page:
> http://docs.openvswitch.org/en/latest/howto/libvirt/
>
> But the when I start the VM using the Virtual Machine Manager I get
> the following error:
> *Error starting domain: internal error: Unable to add port vnet0
to OVS
> bridge br0*
libvirt is creating a tap device, then running ovs-vsctl to attempt to
attach it to the configured switch. To see what command is run, and
what
error is output, add this to your /etc/libvirt/libvirt.d:
log_filters="1:util.command 1:util.netdevopenvswitch"
log_outputs="1:syslog:libvirtd.service"
and restart the libvirt service, then attempt to start your guest while
watching the system logs. You will see an ovs-vsctl command run by
virCommandRunAsync. That command and its output should give you a clue
to what is missing from the locally-built openvswitch vs the official
package installed with apt-get.
> Traceback (most recent call last):
> File "/usr/share/virt-manager/virtManager/asyncjob.py", line
90, in
> cb_wrapper
> callback(asyncjob, *args, **kwargs)
> File "/usr/share/virt-manager/virtManager/asyncjob.py", line
126, in
> tmpcb
> callback(*args, **kwargs)
> File "/usr/share/virt-manager/virtManager/libvirtobject.py",
line 83,
> in newfn
> ret = fn(self, *args, **kwargs)
> File "/usr/share/virt-manager/virtManager/domain.py", line
1402, in
> startup
> self._backend.create()
> File "/usr/lib/python2.7/dist-packages/libvirt.py", line 1035,
in create
> if ret == -1: raise libvirtError ('virDomainCreate()
failed', dom=self)
> libvirtError: internal error: Unable to add port vnet0 to OVS
bridge br0
>
> My output for ovs-vsctl show:
> 3c28f516-dd5c-43cf-bea1-7c068668d1f6
> Bridge "br0"
> Port "enp0s31f6"
> Interface "enp0s31f6"
> Port "br0"
> Interface "br0"
> type: internal
> ovs_version: "2.11.90"
>
> *However, when OVS is installed using apt-get rather than installing
> from source or tarball, all these steps work very well.*
> *
> *
> Please guide me why this error is occurring. I am using Ubuntu
16.04 LTS
> as my host machine. Many users are facing this issue and they have
> reported it on OVS and other mailing lists. But, none is able to
give a
> satisfactory solution.
>
> Regards,
> Harsh
>
>
> _______________________________________________
> libvirt-users mailing list
> libvirt-users(a)redhat.com <mailto:libvirt-users@redhat.com>
> https://www.redhat.com/mailman/listinfo/libvirt-users
>
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Laine Stump