[Pacemaker] Last chance to object to the syntax for cluster tickets (multi-site clusters)

Andrew Beekhof andrew at beekhof.net
Mon Feb 27 00:15:03 EST 2012

Excellent, now that we have Florian's blessing I can merge this today.

On Fri, Feb 24, 2012 at 8:38 PM, Gao,Yan <ygao at suse.com> wrote:
> Hi Florian,
> On 02/24/12 16:00, Florian Haas wrote:
>> On 02/24/12 02:53, Andrew Beekhof wrote:
>>> We're about to lock in the syntax for cluster tickets (used for
>>> multi-ste clusters).
>>> The syntax rules are at:
>>>   https://github.com/gao-yan/pacemaker/commit/9e492f6231df2d8dd548f111a2490f02822b29ea
>>> And its use, along with some examples, can be found here:
>>>    https://github.com/gao-yan/pacemaker/commit/5f75da8d99171cc100e87935c8c3fd2f83243f93
>>> If there are any comments/concerns, now is the time to raise them.
>> For naming, I must confess I find it a bit strange that while all other
>> constraint types use ordinary English names ("order", "location",
>> "colocation"), this one uses a rather strange looking abbreviation.
>> However, I'll also concede that the only alternative that currently
>> comes to my mind would be to rename the constraint type to "ticket", but
>> that obviously creates ambiguity between ticket the constraint and
>> ticket the thing that booth manages, so it would probably be worse.
> I used to adopt this on developing. Indeed, that would be confusing.
>> Perhaps others have a better idea.
> Another one I used to adopt is "ticket_dep" which is somewhat awkward
> too. Finally "rsc_ticket" was chosen because it has "rsc_" prefix which
> looks consistent.
>> About the documentation, I generally find it very useful; I only have
>> one addition for a suggestion: it's not immediately clear from the
>> existing docs that multiple resources can depend on the same ticket. It
>> does mention resource sets (which, still, could use an additional
>> sentence à la "thus, multiple resources can depend on the same ticket"
>> as a courtesy to the novice reader), but it doesn't say whether it's OK
>> to have multiple constraints referring to the same ticket.
> Thanks for pointing it out! Added the description:
> https://github.com/gao-yan/pacemaker/commit/25dc030872a101b0592646d1a57860494753760a
>> If I can spare the time some time in the next few weeks I might also
>> prepare a "die, passive voice, die" patch for that documentation page,
>> but that's just a pet peeve of mine. :)
> Any revise of the docs is welcome, as long as that improves the reading
> experience. :)
> Regards,
>  Gao,Yan
> --
> Gao,Yan <ygao at suse.com>
> Software Engineer
> China Server Team, SUSE.
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