<font size=2 face="sans-serif">Environment:</font>
<br>
<br><font size=2 face="sans-serif">CentOS 5.5</font>
<br><font size=2 face="sans-serif">DRBD 8.3.8</font>
<br><font size=2 face="sans-serif">Corosync 1.2.5</font>
<br><font size=2 face="sans-serif">Pacemaker 1.0.9</font>
<br>
<br><font size=2 face="sans-serif">Whenever I use DRBD MC to manage the
configuration above, I run into stability problems with the cluster. Here
is some of the behavior I have observed:</font>
<br>
<br><font size=2 face="sans-serif">1. Corosync crash across cluster members.
When I try to restart corosync I receive a Bus Error and cannot restart
it until I reboot the system.</font>
<br><font size=2 face="sans-serif">2. Frequent disconnects and reconnects
across the cluster members.</font>
<br><font size=2 face="sans-serif">3. Unresponsive cluster. Whenver I try
to manage the cluster in DRBD MC commands are ignored.</font>
<br>
<br><font size=2 face="sans-serif">When I manage the cluster from the command
line without using the MC everything works fine. Also if I use the
following stack versions everything seems to be fine:</font>
<br>
<br><font size=2 face="sans-serif">CentOS 5.5</font>
<br><font size=2 face="sans-serif">DRBD 8.3.8</font>
<br><font size=2 face="sans-serif">Corosync 1.2.0</font>
<br><font size=2 face="sans-serif">Pacemaker 1.0.8</font>
<br>
<br><font size=2 face="sans-serif">It seems to be an issue with DRBD MC
and the latest Pacemaker and Corosync versions.</font>
<br><font size=2 face="sans-serif"><br>
Thank you,<br>
Jamie Sammons</font>
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