<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<title>2 node OCFS2 clusters</title>
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";
color:black;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:12.0pt;
font-family:"Times New Roman","serif";
color:black;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";
color:black;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;
color:black;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page Section1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body bgcolor=white lang=EN-GB link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Srini,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks for the response.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>So are the following statements correct:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>If I stop the networking on node 1, node 0 will continue to
allow OCFS2 filesystems to work and not reboot itself. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>If I stop the networking on node 0, node 1 (now being the lowest
node?) will continue to allow OCFS2 filesystems to work and not reboot itself. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I guess I just need to know if it’s possible to have a 2
node OCFS2 cluster that will cope with either one of the nodes dying, and have
the remaining node still provide service.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Mark <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>
Srinivas Eeda [mailto:srinivas.eeda@oracle.com] <br>
<b>Sent:</b> 16 November 2009 14:57<br>
<b>To:</b> Thompson, Mark<br>
<b>Cc:</b> ocfs2-users@oss.oracle.com<br>
<b>Subject:</b> Re: [Ocfs2-users] 2 node OCFS2 clusters<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>In a cluster with more than 2 nodes, if a network on one
node goes down, that node will evict itself but other nodes will survive. But
in a two node cluster, the node with lowest node number will survive no mater
on which node network went down.<br>
<br>
thanks,<br>
--Srini<br>
<br>
Thompson, Mark wrote: <o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>Hi,</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>This is my first post here
so</span> <span style='font-family:"Calibri","sans-serif"'>please be gentle
with me.</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>My question is, can you
have a 2 node OCFS2 cluster, disconnect one node from the network, and have the
remaining node continue to function normally? Currently we have a 2 node
cluster and if we stop the NIC that has the OCFS2 o2cb net connection running
on it, the</span> <span style='font-family:"Calibri","sans-serif"'>other node
will reboot itself.</span> <span style='font-family:"Calibri","sans-serif"'>I
have researched having a 2 node OCFS2 cluster but so far I have been unable to
find a clear solution. I have looked at the FAQ regarding quorum,</span> <span
style='font-family:"Calibri","sans-serif"'>and my OCFS2 init scripts are
enabled etc.</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>Is this possible, or should
we look at alternative solutions?</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>Regards,</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>Mark</span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>This e-mail
has come from Experian, the only business to have been twice named the UK's
'Business of the Year’ </span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>===================================================================================</span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>Information
in this e-mail and any attachments is confidential, and may not be copied or
used by anyone other than the addressee, nor disclosed to any third party
without our permission. There is no intention to create any legally binding
contract or other binding commitment through the use of this electronic communication
unless it is issued in accordance with the Experian Limited standard terms and
conditions of purchase or other express written agreement between Experian
Limited and the recipient. </span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>Although
Experian has taken reasonable steps to ensure that this communication and any
attachments are free from computer virus, you are advised to take your own
steps to ensure that they are actually virus free. </span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>Companies Act
information:</span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>Registered
name: Experian Limited </span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>Registered
office: Landmark House, Experian Way, NG2 Business Park, Nottingham, NG80 1ZZ,
United Kingdom</span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>Place of
registration: England and Wales </span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>Registered
number: 653331</span><o:p></o:p></p>
<p><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<pre><o:p> </o:p></pre><pre style='text-align:center'>
<hr size=4 width="90%" align=center>
</pre><pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>Ocfs2-users mailing list<o:p></o:p></pre><pre><a
href="mailto:Ocfs2-users@oss.oracle.com">Ocfs2-users@oss.oracle.com</a><o:p></o:p></pre><pre><a
href="http://oss.oracle.com/mailman/listinfo/ocfs2-users">http://oss.oracle.com/mailman/listinfo/ocfs2-users</a><o:p></o:p></pre></div>
</body>
</html>