Tom Lane wrote:
>> The point is until that last WAL file is backed up, the whole backup
is
>> useless. It isn't good policy to have a backup's value be contingent
on
>> some future event.
> 
> You are assuming here that the continuous archiving process is
identical
> to the WAL part of the base-backup process.  If what you want is an
> identifiable self-contained base backup then you copy off the WAL
files
> along with the tar dump; there's no need to force a switch of the
> current WAL file before you copy it.

I think you are right.

> I don't disagree that in many scenarios the switch is needful.  What
I'm
> saying is that we should provide a separately accessible function for
it.
> PG's PITR support is basically designed as a toolkit that lets you
build
> a PITR solution, not as do-everything, one-size-fits-all monolithic
> functionality, and I want to stay in that spirit.

I agree that it is enough to have a separate pg_finish_wal_segment().

Adding that in your backup script between pg_stop_backup() and tarring
of the archived WAL files would by a simple enough step.

Yours,
Laurenz Albe

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