Re: [Pacemaker] split brain in drbd dual primary setup

2009-12-10 Thread unni krishnan
Is that possible in dual primary mode. Is there any data loss that can occur. I my case I am running the cluster as a load balancer, with VPS running at both the nodes. with ocfs2 as the file system in centos 5 there is no libdlm http://picasaweb.google.com/lh/photo/A7CUF3b_SkzJ0NZKbkyyng?feat=dir

Re: [Pacemaker] split brain in drbd dual primary setup

2009-12-09 Thread Lars Ellenberg
On Tue, Dec 08, 2009 at 09:24:57AM +0100, Andrew Beekhof wrote: > On Mon, Dec 7, 2009 at 2:17 PM, unni krishnan > wrote: > > Ok, one more doubt. How heartbeat + pacemaker is going to detect that > > the drbd is in stand alone state. There is no cluster partition. Only > > drbd is disconnected. >

Re: [Pacemaker] split brain in drbd dual primary setup

2009-12-08 Thread Andrew Beekhof
On Mon, Dec 7, 2009 at 2:17 PM, unni krishnan wrote: > Ok, one more doubt. How heartbeat + pacemaker is going to detect that > the drbd is in stand alone state. There is no cluster partition. Only > drbd is disconnected. resource monitoring. i would assume the RA looks for this case > > > On Mon

Re: [Pacemaker] split brain in drbd dual primary setup

2009-12-07 Thread unni krishnan
Ok, one more doubt. How heartbeat + pacemaker is going to detect that the drbd is in stand alone state. There is no cluster partition. Only drbd is disconnected. On Mon, Dec 7, 2009 at 4:40 PM, Andrew Beekhof wrote: > On Sun, Dec 6, 2009 at 8:31 PM, unni krishnan > wrote: >> Hi, >> >> We are u

Re: [Pacemaker] split brain in drbd dual primary setup

2009-12-07 Thread Andrew Beekhof
On Sun, Dec 6, 2009 at 8:31 PM, unni krishnan wrote: > Hi, > > We are using a cluster setup something like : > > http://picasaweb.google.com/lh/photo/e_uAYjG-8nh7oRZzXDp5HA?feat=directlink > > We are using > > OpenVZ for Virtualization > DRBD with ocfs2 in dual primary mode > heartbeat + pacemaker

[Pacemaker] split brain in drbd dual primary setup

2009-12-06 Thread unni krishnan
Hi, We are using a cluster setup something like : http://picasaweb.google.com/lh/photo/e_uAYjG-8nh7oRZzXDp5HA?feat=directlink We are using OpenVZ for Virtualization DRBD with ocfs2 in dual primary mode heartbeat + pacemaker for HA Currently I have not added the drbd in pacemaker. But added the