On 2014-08-26 18:40:27 +0200, Magnus Hagander wrote:
> On Mon, Aug 25, 2014 at 1:35 PM, Andres Freund <and...@2ndquadrant.com> wrote:
> > Hi,
> >
> > currently pg_basebackup uses fetch mode when only -x is specified -
> > which imo isn't a very good thing to use due to the increased risk of
> > not fetching everything.
> > How about switching to stream mode for 9.5+?
> 
> I think the original reasons were to not change the default behaviour
> with a new feature, and secondly because defaulting to -X requires two
> replication connections rather than one.

Right.

> I think the first reason is gone now, and the risk/damage of the two
> connections is probably smaller than running out of WAL.

Especially as that will fail pretty nearly immediately instead at the
end of the basebackup...

> -x is a good
> default for smaller systems, but -X is a safer one for bigger ones. So
> I agree that changing the default mode would make sense.

Cool.

Greetings,

Andres Freund

-- 
 Andres Freund                     http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services


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