[Pacemaker] The order of resources changes when resources register themselves by a crm command.

Dejan Muhamedagic dejanmm at fastmail.fm
Fri Dec 11 11:47:35 UTC 2009


On Fri, Dec 11, 2009 at 12:39:03PM +0100, Dejan Muhamedagic wrote:
> Hi,
> 
> On Fri, Dec 11, 2009 at 11:24:44AM +0100, Andrew Beekhof wrote:
> > On Fri, Dec 11, 2009 at 11:22 AM, Lars Marowsky-Bree <lmb at suse.de> wrote:
> > > On 2009-12-11T11:02:53, renayama19661014 at ybb.ne.jp wrote:
> > >
> > >> The order of clnPingd1 changes.
> > >
> > > That is just an output issue. Possibly crm_mon should sort the resources
> > > somehow so that the output becomes stable.
> > >
> > >> Is this a bug?
> > >
> > > No, but an enhancement might be possible.
> > 
> > Well, it might affect resource placement... resources are processed in
> > the order they appear in the cib.
> > 
> > What sort of operations is the shell using to achieve the forced load?
> 
> The processing should happen in order as the elements appear in
> the file, but sorted by kind (e.g. first primitives, then groups,
> then clones, then constraints). That's the only way to have
> cibadmin cooperate because of possible dependencies. But the
> order of elements should be otherwise preserved.

Just checked myself with the attached cli file: the order in the
CIB of the clones is 
      <clone id="clnDiskd1">
      <clone id="clnPingd1">
      <clone id="clnDiskd2">
and that's not the order in the file, so there's obviously
something wrong. I'll see what's going on.

Thanks,

Dejan

> > Perhaps it should include an erase so that the order is exactly as specified.
> 
> There's actually erase before load.
> 
> Thanks,
> 
> Dejan
> 
> 
> > >
> > >> Or is it a problem of the problem of my cli file or my operation?
> > >
> > > No.
> > >
> > > Note that this is not related at all to the operation ordering, which is
> > > defined by the constraints; it's just crm_mon output or the sequence in
> > > the CIB, which except for <group /> is irrelevant.
> > >
> > >
> > > Regards,
> > >    Lars
> > >
> > > --
> > > Architect Storage/HA, OPS Engineering, Novell, Inc.
> > > SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg)
> > > "Experience is the name everyone gives to their mistakes." -- Oscar Wilde
> > >
> > >
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