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