[ovirt-users] libvirtError: Cannot get interface MTU

[Edward Haas]

On Thu, Feb 9, 2017 at 4:07 PM, Tyson Landon <tlandon at ontario.k12.or.us>
wrote:

> My engine version is 4.0.5.5-1.el7.centos. The first host is using vdsm-4.18.21-1.el7.centos
> and the second is using vdsm-4.18.15.3-1.el7.centos. I am trying to
> migrate guests off host2 to run updates. The Switch type is OVS so are
> there any pitfalls related to changing that to legacy?
>

I would recommend starting from scratch, do not attempt to move from OVS to
legacy on that version.


>
> >>> Edward Haas <ehaas at redhat.com> 02/09/17 12:55 AM >>>
> Please share the versions you are using (VDSM and Engine).
> Have you configured at the cluster level the switch type as OVS? If so,
> note it is experimental
> and we have not supported migration over OVS in early 4.1 versions.
>
> On Wed, Feb 8, 2017 at 10:27 PM, Tyson Landon <tlandon at ontario.k12.or.us>
> wrote:
>
>> I am new to Ovirt and have a test cluster running with 2 hosts. I have
>> errors when live migrating that started after I installed a new NIC in one
>> host. Live migrate was working fine before the changes. The vdsm log shows
>> the errors below depending on if i am migrating from host1 or host2.
>> Running ovs-vsctl list-br shows that the bridge exists. Ip a shows the
>> interface is down. I do not know what a vdsm bridge is for or if the server
>> just needs to restart a service to get things in order again. Have any of
>> you seen this error before and were able to fix it?
>>
>> HOST 1
>> libvirtError: Cannot get interface MTU on 'vdsmbr_TK4cSEjh': No such
>> device
>>
>> HOST 2
>> libvirtError: Cannot get interface MTU on 'vdsmbr_vqqOTlrR': No such
>> device
>>
>>
>> HOST 1
>> ovs-vsctl list-br
>> vdsmbr_3fDBsCCF
>> vdsmbr_TK4cSEjh
>> vdsmbr_VWhs9soF
>>
>> HOST2
>> ovs-vsctl list-br
>> vdsmbr_YBtJDFGg
>> vdsmbr_qf3gXZdq
>> vdsmbr_vqqOTlrR
>>
>> Thanks
>> Tyson
>>
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>>
>>
>
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