[Pacemaker] [PATCH]Bug 2567 - crm resource migrate should support an optional "role" parameter

Dejan Muhamedagic dejanmm at fastmail.fm
Wed Apr 6 09:38:55 EDT 2011

On Wed, Apr 06, 2011 at 01:00:36PM +0200, Andrew Beekhof wrote:
> On Tue, Apr 5, 2011 at 12:27 PM, Dejan Muhamedagic <dejanmm at fastmail.fm> wrote:
> > Ah, right, sorry, wanted to ask about the difference between
> > move-off and move. The description looks the same as for move. Is
> > it that in this case it is for clones so crm_resource needs an
> > extra node parameter? You wrote in the doc:
> >
> >        +Migrate a resource (-instance for clones/masters) off the specified node.
> >
> > The '-instance' looks somewhat funny. Why not say "Move/migrate a
> > clone or master/slave instance away from the specified node"?
> >
> > I must say that I still find all this quite confusing, i.e. now
> > we have "move", "unmove", and "move-off", but it's probably just me :)
> Not just you.  The problem is that we didn't fully understand all the
> use case permutations at the time.
> I think, not withstanding legacy computability, "move" should probably
> be renamed to "move-to" and this new option be called "move-from".
> That seems more obvious and syntactically consistent with the rest of
> the system.

Yes, move-to and move-from seem more consistent than other
options. The problem is that the old "move" is at times one and
then at times another.

> In the absence of a host name, each uses the current location for the
> named group/primitive resource and complains for clones.
> The biggest question in my mind is what to call "unmove"...
> "move-cleanup" perhaps?

move-remove? :D

Actually, though the word is a bit awkward, unmove sounds fine
to me.



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