Re: pg_ctl promote wait

On Sat, Aug 6, 2016 at 10:43 AM, Peter Eisentraut
<peter(dot)eisentraut(at)2ndquadrant(dot)com> wrote:
> On 8/5/16 12:14 AM, Michael Paquier wrote:
>> In do_stop, this patches makes the wait happen for a maximum of
>> wait_seconds * 2, once when getting the control file information, and
>> once when waiting for the server to shut down.
>
> That's not how I read it. get_controlfile() will decrease the
> wait_seconds argument by how much wait time it has used. The wait for
> shutdown will then only use as much seconds as are left.

Ah, right. The reference to wait_seconds gets decremented.

>> This is not a good
>> idea, and the idea of putting a wait argument in get_controlfile does
>> not seem a good interface to me. I'd rather see get_controlfile be
>> extended with a flag saying no_error_on_failure and keep the wait
>> logic within pg_ctl.
>
> I guess we could write a wrapper function in pg_ctl that encapsulated
> the wait logic.

That's what I would do.
--
Michael