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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>In a two-node setup, node 0 will survive, because that's the node with the lowest node number (as defined in cluster.conf).<o:p></o:p></span></p><p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>You may want to think about adding a third [FAKE] node; if this is a feasible workaround, then only the troublesome node should fence itself.<o:p></o:p></span></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>-----Original Message-----<br>From: ocfs2-users-bounces@oss.oracle.com [mailto:ocfs2-users-bounces@oss.oracle.com] On Behalf Of Alain.Moulle<br>Sent: Tuesday, February 08, 2011 3:06 PM<br>To: ocfs2-users@oss.oracle.com<br>Subject: Re: [Ocfs2-users] Question about eth communication for ocfs2</p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Hi,<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>I have give it a try :<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>linkcom PtP between node1 and node2<o:p></o:p></p><p class=MsoPlainText>IO traffic on OCFS2 on both sides<o:p></o:p></p><p class=MsoPlainText>unplug the PtP cable from both nodes<o:p></o:p></p><p class=MsoPlainText>=>both IO traffic on OCFS2 are stalled<o:p></o:p></p><p class=MsoPlainText>=>after a short while, node2 self-fences, =>whereas a short while after the self-fence of node2 , IO traffic<o:p></o:p></p><p class=MsoPlainText> on node1 starts again<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>So in fact, you confirm that there is no "slave or master" question around this self-fence, but it will always be the larger node number in /etc/ocfs2/cluster.conf which will self-fence ?<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Thanks for your confirmation.<o:p></o:p></p><p class=MsoPlainText>Alain<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Sunil Mushran a écrit :<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> And a relative question :<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> if there is a network breakdown on the only communication link <o:p></o:p></p><p class=MsoPlainText>>> for<o:p></o:p></p><p class=MsoPlainText>>> ocfs2<o:p></o:p></p><p class=MsoPlainText>>> in a two-nodes cluster, what is the behavior :<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> - will both nodes decide to suicide ?<o:p></o:p></p><p class=MsoPlainText>><o:p> </o:p></p><p class=MsoPlainText>> In a 2 node cluster, if the commlink breaks, the larger node number <o:p></o:p></p><p class=MsoPlainText>> fences.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>_______________________________________________<o:p></o:p></p><p class=MsoPlainText>Ocfs2-users mailing list<o:p></o:p></p><p class=MsoPlainText><a href="mailto:Ocfs2-users@oss.oracle.com"><span style='color:windowtext;text-decoration:none'>Ocfs2-users@oss.oracle.com</span></a><o:p></o:p></p><p class=MsoPlainText><a href="http://oss.oracle.com/mailman/listinfo/ocfs2-users"><span style='color:windowtext;text-decoration:none'>http://oss.oracle.com/mailman/listinfo/ocfs2-users</span></a><o:p></o:p></p></div></body></html>