This is a little early in investigation on my end, but is there anything that Pacemaker... or potentially OpenAIS, does that would restrict a cluster resource from setting the scheduler type and/or priority? I have been tinkering with KVM instances and there is a 100% repeatable difference between how it behaves when Pacemaker starts the resource and when I start it via the same OCF script on the command line (as the root user). When it is started via Pacemaker, it seems to be unable to change its scheduler and priority and eventually the whole system is brought to its knees and all monitors get stuck in the "waiting on I/O" (D) state, which freaks Pacemaker out...rightfully so ;-)<br>
<br>Looking at /proc/<pid>/sched shows:<br><br>...<br>policy : 0<br>prio : 0<br>...<br><br>And invoking the resource from the command line shows:<br>
<br>...<br>policy : 2<br>prio : 120<br>...<br><br>Invoking ulimit with the -e and -r parameters with a value of "unlimited" in the OCF script does no good. Thoughts?<br>
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