Re: PITR with rsync

Would a simple diff between 2 pg_dumps work if only data is being added in the
database (i.e. no alters or tables are added)? So say I do a pg_dump once a day
and one every 3 hrs there after and in the script I do a diff and store as a
PITR dump. Will that work, or is it too simplistic?

-----Original Message-----
From: pgsql-admin-owner(at)postgresql(dot)org [mailto:pgsql-admin-owner(at)postgresql(dot)org]
On Behalf Of Tom Lane
Sent: Monday, August 06, 2007 8:54 PM
To: David(dot)Bear(at)asu(dot)edu
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: [ADMIN] PITR with rsync

David Bear <David(dot)Bear(at)asu(dot)edu> writes:
> On Mon, Aug 06, 2007 at 08:27:13PM -0400, Tom Lane wrote:
>> I suppose you could, but what's the point? Copying a single file
>> that doesn't currently exist on the destination plays to none of
>> rsync's strengths.

> well, I was using rysnc so I could copy to a different computer over
> ssh, not using the rsync protocol to catch diffs. I don't have a
> remote file system mounted so I can do just a cp.

If you are going over an ssh connection then scp seems like the appropriate
tool. Yeah, rsync would work, but it's just a useless extra layer of
software...

regards, tom lane

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