Unni, Well, with this setup you can't properly deal with a split brain scenario.
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. 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. Btw, someone actually using DRBD can comment better on this. I use OCFS2 for RAC, so I have to use shared storage. Best Regards, Luis Freitas --- On Tue, 12/8/09, unni krishnan <unnikrishna...@gmail.com> wrote: From: unni krishnan <unnikrishna...@gmail.com> Subject: Re: [Ocfs2-users] ocfs2 heartbeat and drbd in dual primary To: ocfs2-users@oss.oracle.com Date: Tuesday, December 8, 2009, 3:13 AM Any idea ? On Mon, Dec 7, 2009 at 10:13 PM, unni krishnan <unnikrishna...@gmail.com> wrote: > Hi, > > I am new to the world of cluster file system and also with ocfs2. I am > setting up a cluster as a research project and it looks like : > > http://picasaweb.google.com/lh/photo/A7CUF3b_SkzJ0NZKbkyyng?feat=directlink > > The heartbeat will not support ocfs2. Also since in my case the drbd > is in dual primary, for me it is not necessary to add it in heartbeat > or pacemaker ( Its for me and not sure, if that is correct. ) > > In my case the crm resource are the two VPSs in the picture. I am > using the built in heartbeat provided by ocfs2 and the ocfs2 dlm. > > My questions are : > > Since the ocfs2 or drbd is not added in crm, is there any worst thing > or any disaster going to happen with this setup ? > > Please suggest the best method to deal with the ocfs2 + drbd in dual > primary + heartbeat + pacemaker > > I am using : > > OpenVZ for VPS > CentOS 5 as OS > > -- > Regards, > Unni > -- Regards, Unni _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
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