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This is split brain problem. The bad thing for DRBD/heartbeat.<BR>
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I think you need to give up the change in one node, and override it.<BR>
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Detailed info:<BR><BR>
<A href="http://www.drbd.org/users-guide-emb/users-guide.html">http://www.drbd.org/users-guide-emb/users-guide.html</A><BR>
<BR>
regards,<BR>
Edward<BR>
<BR>> Date: Mon, 7 Dec 2009 01:01:03 +0530<BR>> From: unnikrishnan.a@gmail.com<BR>> To: drbd-user@lists.linbit.com<BR>> CC: users@openvz.org; pacemaker@oss.clusterlabs.org<BR>> Subject: [DRBD-user] split brain in drbd dual primary setup<BR>> <BR>> Hi,<BR>> <BR>> We are using a cluster setup something like :<BR>> <BR>> http://picasaweb.google.com/lh/photo/e_uAYjG-8nh7oRZzXDp5HA?feat=directlink<BR>> <BR>> We are using<BR>> <BR>> OpenVZ for Virtualization<BR>> DRBD with ocfs2 in dual primary mode<BR>> heartbeat + pacemaker for HA<BR>> <BR>> Currently I have not added the drbd in pacemaker. But added the VPS as<BR>> resources in pacemaker, so that the VPS can fail over or fail back.<BR>> <BR>> My question is, if I remove the cross over cable that connects the<BR>> drbd then the two server will run in<BR>> <BR>> Primary/Unknown state and since the heartbeat connection which is<BR>> through another cable is not broken, the VPS will run in two nodes.<BR>> <BR>> So the data written to two drdb devices in two nodes are different and<BR>> it is not possible to discard data in any node. What is the better<BR>> solution for this problem. Please give some hints, thanks :-)<BR>> <BR>> -- <BR>> Regards,<BR>> Unni<BR>> _______________________________________________<BR>> drbd-user mailing list<BR>> drbd-user@lists.linbit.com<BR>> http://lists.linbit.com/mailman/listinfo/drbd-user<BR> <br /><hr />Windows Live: <a href='http://www.microsoft.com/middleeast/windows/windowslive/see-it-in-action/social-network-basics.aspx?ocid=PID23461::T:WLMTAGL:ON:WL:en-xm:SI_SB_3:092010' target='_new'>Friends get your Flickr, Yelp, and Digg updates when they e-mail you.</a></body>
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