[Linux-ha-dev] Ordering of OCF Start, Stop and Monitor actions

[Doug Knight]

Current 2.0.8 tarball from 1/18/07. Process in top looks like:

  PID USER  PR  NI  VIRT  RES  SHR S %CPU %MEM  TIME+   COMMAND
24591 root  18   0 1663m 1.5g 1028 R   83 77.8
1:19.42 /usr/sbin/crm_master -v 100

It dies and restarts about every 120 seconds, which happens to be the
timeout I have specified for the stop and start methods.

Doug

On Fri, 2007-03-23 at 08:20 -0600, Alan Robertson wrote:

> Doug Knight wrote:
> > Hi Alan,
> > I've started testing my OCF script, and I'm seeing something unusual
> > during initial startup. I've placed a crm_master call in my
> > stateful_start function, after the function has determined that it is
> > running on what should be the master, and postgresql has successfully
> > started:
> > 
> > crm_master -v 100
> > 
> > When this command gets executed, it starts using nearly 100% CPU, memory
> > usage continuously increases up to about 68%, then it dies (killed via
> > timeout?), followed by a second attempt to go master (with the same
> > charactistics, after the function timeout is exceeded), then a demote is
> > sent (again, after timeout) and it switches to try to become the slave
> > (crm_master -v 10 is what I use, though I'm not sure this is correct
> > usage to say "I want to change to a slave). Eventually, I wind up with
> > the resource in failed mode.
> > 
> > First question, any idea why the straight line running of a crm_master
> > -v 100 (not within any loops in my script) would spin up to 100%?
> 
> Bugs maybe?  What version of heartbeat are you running?  Which processes
> are running up to 100%?  For how long?
> 
> > Second question, is using the crm_master -v with different values the
> > way to say on which node I prefer the master to run (higher number =
> > preferred node)?
> 
> Yes.  I believe that these are added into the values that come from
> other constraints in your configuration file to come up with a best
> configuration.
> 
> --
>     Alan Robertson <alanr at unix.sh>
> 
> "Openness is the foundation and preservative of friendship...  Let me
> claim from you at all times your undisguised opinions." - William
> Wilberforce
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