<br><br><div class="gmail_quote">On Mon, Jul 18, 2011 at 6:38 PM, Kulovits Christian - OS ITSC <span dir="ltr"><<a href="mailto:Christian.Kulovits@austrian.com">Christian.Kulovits@austrian.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div lang="DE-AT" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Hi Andrew,<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:#1F497D">But whats about the –Inf collocation. The groups must not be active on the same node. This implies an order in shutting down and starting up, isn´t it?</span></p>
</div></div></blockquote><div><br></div><div>Colocation does not imply ordering.</div><div>Groups imply both, but only _within_ a group.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div lang="DE-AT" link="blue" vlink="purple"><div><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:#1F497D"> On the other hand, if both groups gets started on different nodes there should not be any order dependency since startup of one group may last a long time and the other should not wait that time.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:#1F497D">Regards, Christian<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p><p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt">From:</span></b><span lang="EN-US" style="font-size:10.0pt"> Andrew Beekhof [mailto:<a href="mailto:andrew@beekhof.net" target="_blank">andrew@beekhof.net</a>] <br>
<b>Sent:</b> Dienstag, 05. Juli 2011 03:46</span></p><div><div></div><div class="h5"><br><b>To:</b> The Pacemaker cluster resource manager<br><b>Subject:</b> Re: [Pacemaker] Group not started/stopped in correct order with -INF collocation<u></u><u></u></div>
</div><p></p><div><div></div><div class="h5"><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><u></u> <u></u></p><div><p class="MsoNormal">On Fri, Jul 1, 2011 at 7:23 PM, Kulovits Christian - OS ITSC <<a href="mailto:Christian.Kulovits@austrian.com" target="_blank">Christian.Kulovits@austrian.com</a>> wrote:<u></u><u></u></p>
<div><div><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Hello Andrew,</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span><u></u><u></u></p><p class="MsoNormal">
<span lang="EN-US" style="font-size:11.0pt;color:#1F497D">No, there are no ordering constraint between the groups! </span><u></u><u></u></p></div></div><div><p class="MsoNormal"><br>Then how is pacemaker supposed to know there is a start/stop order that should be observed?<br>
<u></u><u></u></p></div><blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"><div><div><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:#1F497D">Regards, Christian</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:#1F497D"> </span><u></u><u></u></p><p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt">From:</span></b><span lang="EN-US" style="font-size:10.0pt"> Andrew Beekhof [mailto:<a href="mailto:andrew@beekhof.net" target="_blank">andrew@beekhof.net</a>] <br>
<b>Sent:</b> Freitag, 01. Juli 2011 09:31</span><u></u><u></u></p><div><p class="MsoNormal"><br><b>To:</b> The Pacemaker cluster resource manager<br><b>Subject:</b> Re: [Pacemaker] Group not started/stopped in correct order with -INF collocation<u></u><u></u></p>
</div><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"> <u></u><u></u></p><div><p class="MsoNormal">On Tue, May 31, 2011 at 10:05 PM, Kulovits Christian - OS ITSC <<a href="mailto:Christian.Kulovits@austrian.com" target="_blank">Christian.Kulovits@austrian.com</a>> wrote:<u></u><u></u></p>
<div><div><div><div><p class="MsoNormal"><span lang="EN-US">Hello,</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-US">In a 2-node cluster two groups (prod, test) are defined with a collocation score=“-INFINITY“. When the node running the group prod failed, the test group on the other node was stopped and the prod group was started. After the failed node was online again, the prod group was moved to the other node. BUT the test group was first started, then the prod group was stopped and started on the other node. There was a very short time where both groups were active on the same node.</span><u></u><u></u></p>
</div></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">Do you have an ordering constraint between them?<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
<div><div><p class="MsoNormal"><span lang="EN-US">We use a RA to set the home directory for some users, and so the path gets first set and then unset by this sequence. There is no order defined between these groups to enable parallel starts on different nodes.</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US">Is this a definition problem or a bug. Nevertheless this behavior looks strange for me!</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-US"> </span><u></u><u></u></p><p class="MsoNormal">
<span lang="EN-US">Kind regards, Christian</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-US"> </span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-US" style="font-size:8.0pt">Mit freundlichen Grüßen / with best regards<br>
Christian Kulovits</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB">____________________________________________</span><span lang="EN-US"><br><br></span><img border="0" width="160" height="63" src="cid:image001.jpg@01CC4536.CFE31CA0" alt="Description: cid:497353613@17022010-1F5B"><span lang="EN-US"><br>
</span><b><span lang="EN-US" style="font-size:8.0pt">AUSTRIAN AIRLINES<br><span style="color:black">Christian Kulovits</span></span></b><span lang="EN-US" style="font-size:8.0pt"><br><b>ITSOC Central System & Database Services<br>
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<p><span style="font-size:8.0pt"> </span><u></u><u></u></p></div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>_______________________________________________<br>Pacemaker mailing list: <a href="mailto:Pacemaker@oss.clusterlabs.org" target="_blank">Pacemaker@oss.clusterlabs.org</a><br>
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</blockquote></div></div></div><p class="MsoNormal"> <u></u><u></u></p></div></div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>_______________________________________________<br>Pacemaker mailing list: <a href="mailto:Pacemaker@oss.clusterlabs.org" target="_blank">Pacemaker@oss.clusterlabs.org</a><br>
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Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" target="_blank">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</a><br>Bugs: <a href="http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker" target="_blank">http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker</a><u></u><u></u></p>
</blockquote></div><p class="MsoNormal"><u></u> <u></u></p></div></div></div></div><br>_______________________________________________<br>
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Project Home: <a href="http://www.clusterlabs.org" target="_blank">http://www.clusterlabs.org</a><br>
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<br></blockquote></div><br>