<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">David,<div><br></div><div>Thank you for your answer !</div><div><br></div><div>This log entry arrived just after (and is certainly due to the fact that) I closed network communication between srv2-1 and srv2-2 :</div><div>I connected to secondary server and used iptables to stop communication between the two servers.</div><div>Just after that, primary server was reachable again !</div><div>But according to logs, issue started 2 days before.</div><div><br></div><div>However, to answer your question, the network between the 2 servers is the private dedicated network OVH uses between its 2 data-centers RBX & SGB :</div><div><a href="http://www.ovh.co.uk/dedicated_servers/data_centre_selection.xml">http://www.ovh.co.uk/dedicated_servers/data_centre_selection.xml</a></div><div>I have a 100Mbps connection between the 2 servers.</div><div><br></div><div>Best regards,</div><div><br></div><div>Ben</div><div><br></div><div><div><div>Le 10 mars 2013 à 16:01, David Coulson a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite">
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What is your network between the two systems?<br>
<br>
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<pre style="color: rgb(0, 0, 0); font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; word-wrap: break-word; white-space: pre-wrap;">Feb 19 19:20:56 srv2-2 kernel: block drbd1: PingAck did not arrive in time.
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That means DRBD couldn't communicate between the nodes.<br>
<br>
David<br>
<br>
<div class="moz-cite-prefix">On 3/10/13 10:59 AM, AZ 9901 wrote:<br>
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<div>Le 5 mars 2013 à 07:21, AZ 9901 a écrit :</div>
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<div>// I made some errors in my previous mail, here they
are corrected</div>
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</div>
Hello,<br>
<br>
I faced a big issue with DRBD.<br>
<br>
OS : Linux Debian 6<br>
Kernel : 2.6.32-46<br>
DRBD : 8.3.14<br>
<br>
My primary server (srv2-2) was totally unreachable, it
only replied to ping.<br>
Apache, SSH etc... were not replying anymore.<br>
<br>
So I connected to my secondary server (srv2-1) and closed
network communication between both.<br>
This made srv2-2 available again !<br>
I decided however to change srv2-1 from Secondary to
Primary and to reboot srv2-2.<br>
<br>
Following are logs from srv2-2 and srv2-1, with some
comments.<br>
srv2-2 : <a moz-do-not-send="true" href="http://pastebin.com/raw.php?i=zkHV5Tr9">http://pastebin.com/raw.php?i=zkHV5Tr9</a><br>
srv2-1 : <a moz-do-not-send="true" href="http://pastebin.com/raw.php?i=WX4vNR6d">http://pastebin.com/raw.php?i=WX4vNR6d</a><br>
<br>
on srv2-2, sar tells me that some of my CPU cores were
100% used (100% iowait) during all the time frame in which
I had "time expired" errors. <br>
<br>
Could you help me please ?<br>
<br>
Thank you very much,<br>
<br>
Ben
<div><br>
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<br>
</div>
<div>Hello,
<div><br>
</div>
<div>Any help on this problem ?</div>
<div><br>
</div>
<div>To help further, here is my configuration : <a moz-do-not-send="true" href="http://pastebin.com/raw.php?i=UJ7npfBD">http://pastebin.com/raw.php?i=UJ7npfBD</a></div>
<div><br>
</div>
<div>Thank you very much,</div>
<div><br>
</div>
<div>Best regards,</div>
<div><br>
</div>
<div>Ben</div>
</div>
<div><br>
</div>
<br>
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