Re: pg_dump vs pg_basebackup

From: Magnus Hagander <magnus(at)hagander(dot)net>
To: ik(at)postgresql-consulting(dot)com
Cc: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, Claudio Freire <klaussfreire(at)gmail(dot)com>, David Johnston <polobo(at)yahoo(dot)com>, postgres performance list <pgsql-performance(at)postgresql(dot)org>
Subject: Re: pg_dump vs pg_basebackup
Date: 2014-03-25 15:21:43
Message-ID: CABUevEypWxUsDRG2Ro5e0Ba7excM7OwDHL75XZh=zpqr4W3NUg@mail.gmail.com
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I would say that's the one thing that rsync is *not*. pg_basebackup takes
care of a lot of things under the hood. rsync is a lot more complicated, in
particular in failure scenarios, since you have to manually deal with
pg_start/stop_backup().

There are definitely reasons you'd prefer rsync over pg_basebackup, but I
don't believe simplicity is one of them.

//Magnus

On Tue, Mar 25, 2014 at 4:18 PM, Ilya Kosmodemiansky <
ilya(dot)kosmodemiansky(at)postgresql-consulting(dot)com> wrote:

> Joshua,
>
> that is really good point: an alternative is to use pg_basebackup
> through ssh tunnel with compression, but rsync is much simpler.
>
> On Tue, Mar 25, 2014 at 3:56 PM, Joshua D. Drake <jd(at)commandprompt(dot)com>
> wrote:
> >
> > On 03/25/2014 05:05 AM, Claudio Freire wrote:
> >>
> >>
> >> On Tue, Mar 25, 2014 at 4:39 AM, David Johnston <polobo(at)yahoo(dot)com>
> wrote:
> >>>>
> >>>> Hai,
> >>>>
> >>>> Can anyone tell me the difference and performance between pgdump and
> >>>> pg_basebackup if I want to backup a large database.
> >>>>
> >
> > Honestly,
> >
> > Neither is particularly good at backing up large databases. I would look
> > into PITR with rsync.
> >
> > JD
> >
> >
> > --
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>
> --
> Ilya Kosmodemiansky,
>
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>
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--
Magnus Hagander
Me: http://www.hagander.net/
Work: http://www.redpill-linpro.com/

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