<div dir="ltr"><div class="gmail_extra"><div><div class="gmail_signature"><div><font face="Times New Roman">Thanks for your answers.</font></div><div><font face="Times New Roman">Token value was previoulsly 5000, but I already increased it to 10000, without any change. So 10 secondes before TOTEM fire the "</font>A processor failed, forming new configuration" message, but in the log we see that in the same second the other node reappeared !</div><div>Should I use an higher token value ?</div><div><br></div><div>Best regards,</div></div></div>
<br><div class="gmail_quote">2015-04-29 14:17 GMT+02:00 Ulrich Windl <span dir="ltr"><<a href="mailto:Ulrich.Windl@rz.uni-regensburg.de" target="_blank">Ulrich.Windl@rz.uni-regensburg.de</a>></span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">>>> Jan Friesse <<a href="mailto:jfriesse@redhat.com">jfriesse@redhat.com</a>> schrieb am 29.04.2015 um 13:10 in Nachricht<br>
<<a href="mailto:5540BC0B.50409@redhat.com">5540BC0B.50409@redhat.com</a>>:<br>
<span class="">> Philippe,<br>
><br>
> Philippe Carbonnier napsal(a):<br>
>> Hello,<br>
>> just for the guys who doesn't want to read all the logs, I put my question<br>
>> on top (and at the end) of the post :<br>
>> Is there a timer that I can raise to try to give more time to each nodes to<br>
>> see each other BEFORE TOTEM fire the "A processor failed, forming new<br>
>> configuration", because the 2 nodes are really up and running.<br>
><br>
> There are many timers, but basically almost everything depends on token<br>
> timeout, so just set "token" to higher value.<br>
<br>
</span>Please correct me if I'm wrong: A token timeout is oly triggered when<br>
1) The token is lost in the network (i.e. a packet is lost and not retransmitted in time)<br>
2) The token is lost on a node (e.g. it crashes while it has the token)<br>
3) The host or the network don't respond in time (the token is not lost, but late)<br>
4) There's a major bug in the TOTEM protocol (its implementation)<br>
<br>
I really wonder whether the resaon for frequent token timeouts is 1); usually it's not 2) either. For me 3) is hard to believe also. And nobody admits it's 4).<br>
<br>
So everybody says it's 3) and suggests to increase the timeout.<br>
<span class=""><br>
>><br>
>> The 2 linux servers (vif5_7 and <a href="http://host2.example.com" target="_blank">host2.example.com</a>) are 2 VM on the same<br>
>> VMWare ESX server. May be the network is 'not working' the way corosync<br>
>> wants ?<br>
<br>
</span>OK, for virtual hosts I might add:<br>
5) The virtual time is not flowing steadily, i.e. the number of usable CPU cycles per walltime unit is highly variable.<br>
<span class=""><br>
><br>
> Yep. But first give a chance to token timeout increase.<br>
<br>
</span>I agree that for 5) a longer token timeout might be a workaround, but finding the root cause may be worth the time being spent doing so.<br>
<br>
<br>
Regards,<br>
Ulrich<br>
<div class=""><div class="h5"><br>
<br>
<br>
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