<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Unni,<br><br> Well, with this setup you can't properly deal with a split brain scenario.<br><br> DRDB will have it's heartbeat algorithm, I don't know how it works, but it certainly has one, and OCFS2 has one too. If they are not integrated you could have a scenario where OCFS2 kills one node and DRDB kills the other, and you end up without any of them.<br><br> OCFS2 chooses the first node in the case of a network failure. So you should either use OCFS2 and DRDB integrated with heartbeat2 (Available only for non-enterprise distros) or setup DRDB to choose the first node too.<br><br> Btw, someone actually using DRBD can comment better on this. I use OCFS2 for RAC, so I have to use shared storage.<br><br>Best Regards,<br>Luis Freitas<br><br>--- On <b>Tue, 12/8/09, unni krishnan
<i><unnikrishnan.a@gmail.com></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><br>From: unni krishnan <unnikrishnan.a@gmail.com><br>Subject: Re: [Ocfs2-users] ocfs2 heartbeat and drbd in dual primary<br>To: ocfs2-users@oss.oracle.com<br>Date: Tuesday, December 8, 2009, 3:13 AM<br><br><div class="plainMail">Any idea ?<br><br>On Mon, Dec 7, 2009 at 10:13 PM, unni krishnan <<a ymailto="mailto:unnikrishnan.a@gmail.com" href="/mc/compose?to=unnikrishnan.a@gmail.com">unnikrishnan.a@gmail.com</a>> wrote:<br>> Hi,<br>><br>> I am new to the world of cluster file system and also with ocfs2. I am<br>> setting up a cluster as a research project and it looks like :<br>><br>> <a href="http://picasaweb.google.com/lh/photo/A7CUF3b_SkzJ0NZKbkyyng?feat=directlink"
target="_blank">http://picasaweb.google.com/lh/photo/A7CUF3b_SkzJ0NZKbkyyng?feat=directlink</a><br>><br>> The heartbeat will not support ocfs2. Also since in my case the drbd<br>> is in dual primary, for me it is not necessary to add it in heartbeat<br>> or pacemaker ( Its for me and not sure, if that is correct. )<br>><br>> In my case the crm resource are the two VPSs in the picture. I am<br>> using the built in heartbeat provided by ocfs2 and the ocfs2 dlm.<br>><br>> My questions are :<br>><br>> Since the ocfs2 or drbd is not added in crm, is there any worst thing<br>> or any disaster going to happen with this setup ?<br>><br>> Please suggest the best method to deal with the ocfs2 + drbd in dual<br>> primary + heartbeat + pacemaker<br>><br>> I am using :<br>><br>> OpenVZ for VPS<br>> CentOS 5 as OS<br>><br>> --<br>> Regards,<br>> Unni<br>><br><br><br><br>--
<br>Regards,<br>Unni<br><br>_______________________________________________<br>Ocfs2-users mailing list<br><a ymailto="mailto:Ocfs2-users@oss.oracle.com" href="/mc/compose?to=Ocfs2-users@oss.oracle.com">Ocfs2-users@oss.oracle.com</a><br><a href="http://oss.oracle.com/mailman/listinfo/ocfs2-users" target="_blank">http://oss.oracle.com/mailman/listinfo/ocfs2-users</a><br></div></blockquote></td></tr></table><br>