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Re: Backup of live database

From: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
To: Brian Modra <epailty(at)googlemail(dot)com>
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: Backup of live database
Date: 2008-01-16 08:05:23
Message-ID: 478DBAC3.8050802@commandprompt.com (view raw or flat)
Thread:
Lists: pgsql-admin
Brian Modra wrote:
> The documentation about WAL says that you can start a live backup, as 
> long as you use WAL backup also.
> I'm concerned about the integrity of the tar file. Can someone help me 
> with that?

If you are using point in time recovery:

http://www.postgresql.org/docs/8.2/static/continuous-archiving.html

You do not have to worry about it.

Joshua D. Drake






> 
> On 16/01/2008, *Joshua D. Drake* <jd(at)commandprompt(dot)com 
> <mailto:jd(at)commandprompt(dot)com>> wrote:
> 
>     Brian Modra wrote:
>      > Hi,
>      > If tar reports that a file was modified while it was being archived,
>      > does that mean that the file was archived correctly, or is it
>     corrupted
>      > in the archive?
>      > Does tar take a snapshot of the file so that even if it is
>     modified, at
>      > least the archive is safe?
> 
>     You can not use tar to backup postgresql if it is running.
> 
>     http://www.postgresql.org/docs/8.2/static/backup.html
>     <http://www.postgresql.org/docs/8.2/static/backup.html>
> 
>     Sincerely,
> 
>     Joshua D. Drake
> 
>      > Thanks
>      >
>      > --
>      > Brian Modra   Land line: +27 23 5411 462
>      > Mobile: +27 79 183 8059
>      > 6 Jan Louw Str, Prince Albert, 6930
>      > Postal: P.O. Box 2, Prince Albert 6930
>      > South Africa
> 
> 
> 
> 
> -- 
> Brian Modra   Land line: +27 23 5411 462
> Mobile: +27 79 183 8059
> 6 Jan Louw Str, Prince Albert, 6930
> Postal: P.O. Box 2, Prince Albert 6930
> South Africa


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Subject: Re: Backup of live database
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