Re: pg_basebackup: could not get transaction log end position from server: FATAL: could not open file "./pg_hba.conf~": Permission denied

From: Andres Freund <andres(at)2ndquadrant(dot)com>
To: Magnus Hagander <magnus(at)hagander(dot)net>
Cc: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_basebackup: could not get transaction log end position from server: FATAL: could not open file "./pg_hba.conf~": Permission denied
Date: 2014-05-16 16:25:26
Message-ID: 20140516162526.GM23662@alap3.anarazel.de
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On 2014-05-16 18:20:35 +0200, Magnus Hagander wrote:
> On Fri, May 16, 2014 at 5:46 PM, Joshua D. Drake <jd(at)commandprompt(dot)com>wrote:
>
> > At a minimum:
> >
> > Check to see if there is going to be a permission error BEFORE the base
> > backup begins:
> >
> > starting basebackup:
> > checking perms: ERROR no access to pg_hba.conf~ base backup will fail
>
>
> That's pretty much what it does if you enable progress meter. I realize you
> don't necessarily want that one, but we could have a switch that still
> tells the server to measure the size, but not actually print the output?
> While it costs a bit of overhead to do that, that's certainly something
> that's a lot more safe than ignoring errors.

Don't think it'll show you that error - that mode only stats() files,
right? So you'd need to add access() or open()s.

Greetings,

Andres Freund

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

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