andrew at beekhof
Feb 26, 2012, 9:15 PM
Post #4 of 8
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Re: Last chance to object to the syntax for cluster tickets (multi-site clusters)
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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> 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>
> Software Engineer
> China Server Team, SUSE.
>
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