[Pacemaker] bug in ordering syntax?

[Frank DiMeo]

Here's the output of ptest for the pe-input-***.bz2 file that's created when I put ubuntu_2 into standby and the cluster tries to move my 4 resources from ubuntu_2 to ubuntu_1 (while running the compact ordering syntax with a score of INFINITY).

I've converted it to a .png for your viewing pleasure.

-Frank

> -----Original Message-----
> From: Andrew Beekhof [mailto:andrew at beekhof.net]
> Sent: Wednesday, December 02, 2009 6:00 AM
> To: pacemaker at oss.clusterlabs.org
> Subject: Re: [Pacemaker] bug in ordering syntax?
> 
> On Mon, Nov 30, 2009 at 9:19 PM, Frank DiMeo
> <Frank.DiMeo at bigbandnet.com> wrote:
> > I'm experimenting with startup sequence and co-location control, and
> think I
> > may have stumbled across a bug.
> >
> >
> >
> > I have two xml files that I use in my testing as my initial
> configuration of
> > a two node cluster.  I start each node with no configuration, and
> then use
> > cibadmin to "source in" the xml file.  Each file defines two
> resources as
> > well as a startup order and collocation definition.  The only
> difference
> > between the two files is the syntax I use to specify the startup
> order.
> >
> >
> >
> > When I use the syntax:
> >
> >
> >
> > <rsc_order id="order-1" first="world1" then="world2" score="INFINITY"
> />
> >
> >
> >
> > Everything works fine.  I can put either of the two nodes into
> standby while
> > resources are running there, and the resources move to the other node
> as
> > expected.
> >
> >
> >
> > However, when I use the syntax:
> >
> >
> >
> > - <<rsc_order id="order-1">
> 
> You're missing a score.  Without one it defaults to 0 (which means
> optional).
> However, IIRC, the 1.0.6 schema won't allow you to set a score there
> so you'll need to apply the following patch:
>    http://hg.clusterlabs.org/pacemaker/stable-1.0/rev/c8585629629c
> 
> >
> > - <  <resource_set id="order-1-set-1" sequential="true">
> >
> >   <            <resource_ref id="world1" />
> >
> >   <            <resource_ref id="world2" />
> >
> >   </resource_set>
> >
> >  </rsc_order>
> >
> >
> >
> >
> >
> > Several bad things happen.  First, the resources don't move off the
> node
> > that is put into standby, even though the alternate node is running
> and able
> > to run the resources.
> 
> Did you remove the other ordering constraint first?
> 
> > Second, attempting to shut down openais on the node
> > running the resources after attempting a forced move (by putting the
> node
> > into standby) leaves both the lrmd and pengine processes running (but
> > children of process 1 (init), and the resources continue to run on
> the that
> > node even after openais is stopped.
> 
> I suspect you've a faulty init script there.  See other email.
> 
> > I turned debug on in crmd and in the logs and recorded what happens
> when I
> > force standby, and I notice that using the first syntax causes
> > te_rsc_command to be executed to send a shut down message to the node
> where
> > the resources are running (which seems to work), while using the
> second
> > syntax causes te_pseudo_action to be called in approximately the same
> place
> > in the log, but no shutdown of resources happens (I can't really tell
> what
> > this is supposed to be doing).
> 
> Neither can I - you didnt attach the logs :-)
> 
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