This is a multi-part message in MIME format. --------------060204050902010701050107 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Hi Stefano, It's definitely not the switch, it seems to be the latest kernel package (kernel-3.10.0-327.3.1.el7.x86_64) which stops bonding working correctly, reverting back to the previous kernel brings the network up in 802.3ad mode (4). I know, from reading the release notes of 7.2, that there were some changes to the bonding bits in the kernel so i'm guessing maybe some defaults have changed. I'll keep digging and post back as soon as i have something. Jon On 29/12/15 19:55, Stefano Danzi wrote:
Hi! I didn't solve yet. I'm still using mode 2 on bond interface. What's your switch model and firmware version?
-------- Messaggio originale -------- Da: Jon Archer <jon@rosslug.org.uk> Data: 29/12/2015 19:26 (GMT+01:00) A: users@ovirt.org Oggetto: Re: [ovirt-users] Network instability after upgrade 3.6.0 -> 3.6.1
Stefano,
I am currently experiencing the same issue. 2x nic lacp config at switch, mode 4 bond at server with no connectivity. Interestingly I am able to ping the switch itself.
I haven't had time to investigate thoroughly but my first thought is an update somewhere.
Did you ever resolve and get back to mode=4?
Jon
On 17 December 2015 17:51:50 GMT+00:00, Stefano Danzi <s.danzi@hawai.it> wrote:
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@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
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-- Sent from my Android device with K-9 Mail. Please excuse my brevity.
--------------060204050902010701050107 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit <html> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> Hi Stefano,<br> <br> It's definitely not the switch, it seems to be the latest kernel package (kernel-3.10.0-327.3.1.el7.x86_64) which stops bonding working correctly, reverting back to the previous kernel brings the network up in 802.3ad mode (4).<br> <br> I know, from reading the release notes of 7.2, that there were some changes to the bonding bits in the kernel so i'm guessing maybe some defaults have changed.<br> <br> I'll keep digging and post back as soon as i have something.<br> <br> Jon<br> <br> <div class="moz-cite-prefix">On 29/12/15 19:55, Stefano Danzi wrote:<br> </div> <blockquote cite="mid:yuu6vcix8xss464s04yxu6xv.1451418904304@email.android.com" type="cite"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> Hi! I didn't solve yet. I'm still using mode 2 on bond interface. What's your switch model and firmware version? <br> <br> -------- Messaggio originale --------<br> Da: Jon Archer <a class="moz-txt-link-rfc2396E" href="mailto:jon@rosslug.org.uk"><jon@rosslug.org.uk></a> <br> Data: 29/12/2015 19:26 (GMT+01:00) <br> A: <a class="moz-txt-link-abbreviated" href="mailto:users@ovirt.org">users@ovirt.org</a> <br> Oggetto: Re: [ovirt-users] Network instability after upgrade 3.6.0 -> 3.6.1 <br> <br> Stefano,<br> <br> I am currently experiencing the same issue. 2x nic lacp config at switch, mode 4 bond at server with no connectivity. Interestingly I am able to ping the switch itself.<br> <br> I haven't had time to investigate thoroughly but my first thought is an update somewhere.<br> <br> Did you ever resolve and get back to mode=4?<br> <br> Jon<br> <br> <div class="gmail_quote">On 17 December 2015 17:51:50 GMT+00:00, Stefano Danzi <a class="moz-txt-link-rfc2396E" href="mailto:s.danzi@hawai.it"><s.danzi@hawai.it></a> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> <pre class="k9mail">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: <blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #729fcf; padding-left: 1ex;"> 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. <hr> Users mailing list <a class="moz-txt-link-abbreviated" href="mailto:Users@ovirt.org">Users@ovirt.org</a> <a moz-do-not-send="true" href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailman/listinfo/users</a></blockquote> <hr> Users mailing list <a class="moz-txt-link-abbreviated" href="mailto:Users@ovirt.org">Users@ovirt.org</a> <a moz-do-not-send="true" href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailman/listinfo/users</a> </pre></blockquote></div> -- Sent from my Android device with K-9 Mail. Please excuse my brevity. </blockquote> </body></html> --------------060204050902010701050107--