<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On 4 August 2016 at 11:45, Brian Haley <span dir="ltr"><<a href="mailto:brian.haley@hpe.com" target="_blank">brian.haley@hpe.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On 08/04/2016 01:36 PM, Armando M. wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Neutrinos,<br>
<br>
I have noticed that Liberty seems to be belly up [1]. I wonder if anyone knows<br>
anything or has the time to look into it.<br>
<br>
Many thanks,<br>
Armando<br>
<br>
[1] <a href="https://review.openstack.org/#/c/349039/" rel="noreferrer" target="_blank">https://review.openstack.org/#<wbr>/c/349039/</a><br>
</blockquote>
<br></div></div>
This could be due to this backport;<br>
<br>
<a href="https://review.openstack.org/#/c/347062/" rel="noreferrer" target="_blank">https://review.openstack.org/#<wbr>/c/347062/</a><br>
<br>
Before we were doing 'ping -c 3 -W 1 $IP', which will succeed as long as one packet is returned.<br>
<br>
Now there is an outer loop that runs 'ping -c 1 -W 1 $IP', so a single dropped packet could cause an error. Since sometimes that first packet causes ARP to happen, any delay near the 1-second mark looks like a lost packet, but is really just transient and packets 2 and 3 are fine.<br>
<br>
I've started a revert and will recheck, but if I'm right an async issue like this is hard to reliably reproduce - I had to use iptables directly to test my theory about the return code from ping when 1/3 packets were lost.<br>
<br></blockquote><div>Thanks Brian,</div><div><br></div><div>I'll eagerly await results!</div><div> <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
-Brian<br>
<br>
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</blockquote></div><br></div></div>