[ovirt-users] R: Re: Network instability after upgrade 3.6.0 -> 3.6.1

[Yedidyah Bar David]

On Mon, Dec 28, 2015 at 3:48 PM, Stefano Danzi <s.danzi at hawai.it> wrote:
> Problem solved!!!
>
> The file hosted-engine.conf had a wrong fqdn.
> I don't think that this happened during upgrade... mybe thay my colleague
> did something of wrong...

Thanks for the report :-)

>
>
> Il 20/12/2015 14.52, Stefano Danzi ha scritto:
>
> Network problems was solved after changing Bond mode  (and it's strange. I
> have to investigate around qemu-kvm, cento 7.2 and switch firmware ), but
> broker problem still exist.  If I turn on the host, ha agent start engine
> vm. When engine VM is up, broker strats to send email.  Now I haven't here
> detailed logs.
>
>
> -------- Messaggio originale --------
> Da: Yedidyah Bar David <didi at redhat.com>
> Data: 20/12/2015 11:20 (GMT+01:00)
> A: Stefano Danzi <s.danzi at hawai.it>, Dan Kenigsberg <danken at redhat.com>
> Cc: users <users at ovirt.org>
> Oggetto: Re: [ovirt-users] Network instability after upgrade 3.6.0 -> 3.6.1
>
> On Fri, Dec 18, 2015 at 5:31 PM, Stefano Danzi <s.danzi at hawai.it> wrote:
>> I found this in vdsm.log and I think that could be the problem:
>>
>> Thread-3771::ERROR::2015-12-18
>>
>> 16:18:58,597::brokerlink::279::ovirt_hosted_engine_ha.lib.brokerlink.BrokerLink::(_communicate)
>> Connection closed: Connection closed
>> Thread-3771::ERROR::2015-12-18 16:18:58,597::API::1847::vds::(_getHaInfo)
>> failed to retrieve Hosted Engine HA info
>> Traceback (most recent call last):
>>   File "/usr/share/vdsm/API.py", line 1827, in _getHaInfo
>>     stats = instance.get_all_stats()
>>   File
>>
>> "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/client/client.py",
>> line 103, in get_all_stats
>>     self._configure_broker_conn(broker)
>>   File
>>
>> "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/client/client.py",
>> line 180, in _configure_broker_conn
>>     dom_type=dom_type)
>>   File
>>
>> "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py",
>> line 176, in set_storage_domain
>>     .format(sd_type, options, e))
>> RequestError: Failed to set storage domain FilesystemBackend, options
>> {'dom_type': 'nfs3', 'sd_uuid': '46f55a31-f35f-465c-b3e2-df45c05e06a7'}:
>> Connection closed
>
> My guess is that this is a consequence of your networking problems.
>
> Adding Dan.
>
>>
>>
>> Il 17/12/2015 18.51, Stefano Danzi ha scritto:
>>>
>>> I partially solve the problem.
>>>
>>> My host machine has 2 network interfaces with a bond. The bond was
>>> configured with  mode=4 (802.3ad) and switch was configured in the same
>>> way.
>>> If I remove one network cable the network become stable. With both cables
>>> attached the network is instable.
>>>
>>> I removed the link aggregation configuration from switch and change the
>>> bond in mode=2 (balance-xor). Now the network are stable.
>>> The strange thing is that previous configuration worked fine for one
>>> year... since the last upgrade.
>>>
>>> Now ha-agent don't reboot the hosted-engine anymore, but I receive two
>>> emails from brocker evere 2/5 minutes.
>>> First a mail with "ovirt-hosted-engine state transition
>>> StartState-ReinitializeFSM" and after "ovirt-hosted-engine state
>>> transition
>>> ReinitializeFSM-EngineStarting"
>>>
>>>
>>> Il 17/12/2015 10.51, Stefano Danzi ha scritto:
>>>>
>>>> Hello,
>>>> I have one testing host (only one host) with self hosted engine and 2 VM
>>>> (one linux and one windows).
>>>>
>>>> After upgrade ovirt from 3.6.0 to 3.6.1 the network connection works
>>>> discontinuously.
>>>> Every 10 minutes HA agent restart hosted engine VM because result down.
>>>> But the machine is UP,
>>>> only the network stop to work for some minutes.
>>>> I activate global maintenace mode to prevent engine reboot. If I ssh to
>>>> the hosted engine sometimes
>>>> the connection work and sometimes no.  Using VNC connection to engine I
>>>> see that sometime VM reach external network
>>>> and sometimes no.
>>>> If I do a tcpdump on phisical ethernet interface I don't see any packet
>>>> when network on vm don't work.
>>>>
>>>> Same thing happens fo others two VM.
>>>>
>>>> Before the upgrade I never had network problems.
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at ovirt.org
>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>
>> _______________________________________________
>> Users mailing list
>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>
>
>
> --
> Didi
>
>
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-- 
Didi