Re: Problem with pg_upgrade

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Payal Singh <payals1(at)umbc(dot)edu>
Cc: pgsql-bugs(at)postgresql(dot)org, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Craig Ringer <ringerc(at)ringerc(dot)id(dot)au>
Subject: Re: Problem with pg_upgrade
Date: 2012-07-06 20:05:27
Message-ID: 20120706200527.GC11753@momjian.us
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On Fri, Jul 06, 2012 at 04:03:38PM -0400, Payal Singh wrote:
> The omnipitr-backup-slave process takes online backups from the standby, and
> this is done everyday. This process connects to the master and calls a
> pg_start_backup and then looks for a restore point on the standby after that
> WAL address. So i don't think I need to shut down the server.

My guess is if you try pg_upgrade without omnipitr-backup-slave, and it
works, odds are something about your use of omnipitr-backup-slave is
wrong.

> Also, it is the omnipitr-backup-slave process that makes a separate backup for
> xlog.
>
>
> If you run vacuumedb now, does everything later work fine?
>
>
> I'm not sure about that. Didn't try anything else after that. The 9.2beta2
> server starts without errors though.

True, but it seems like something it wrong about the cluster, as is
shown by vacuumdb.

---------------------------------------------------------------------------

>
> Regards,
> Payal
>
> On Fri, Jul 6, 2012 at 3:30 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>
> On Fri, Jul 06, 2012 at 02:22:28PM -0400, Payal Singh wrote:
> > The first message in the log is probably because the backup is taken from
> a
> > standby. I am using omnipitr-backup-slave to make the backups and then
> > restoring one of those.
>
> OK, this is what I wanted to see. Is the server running while you are
> taking these backups, because that will not work.
>
> > The whole process that I followed is:
> >
> >
> > 1. Restoring backup file:
> > 2.
> > 3. payal(at)sparedb1:/data/pg$ sudo tar -xvzf /mnt/nas/backups/postgres/
> > userslave2/backups/data/
> userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
>
> > 489. payal(at)sparedb1:/data/pg$ sudo tar -xvzf /mnt/nas/backups/postgres/
> > userslave2/backups/data/
> userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
> > 490. 9.1/pg_xlog/
> > 491. 9.1/pg_xlog/000000010000027C00000070
> > 492. 9.1/pg_xlog/000000010000027C0000006B.009707C0.backup
> > 493. 9.1/pg_xlog/000000010000027C0000006D
> > 494. 9.1/pg_xlog/000000010000027C0000006C
> > 495. 9.1/pg_xlog/000000010000027C0000006B
> > 496. 9.1/pg_xlog/000000010000027C0000006E
> > 497. 9.1/pg_xlog/000000010000027C00000071
> > 498. 9.1/pg_xlog/000000010000027C0000006F
>
> Why is the xlog backup a separate step? Because it is a separate file
> system? The system is down, I assume.
>
> If you run vacuumedb now, does everything later work fine?
>
> --
> Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
> EnterpriseDB http://enterprisedb.com
>
> + It's impossible for everything to be true. +
>
>
>
>
> --
> Payal Singh
> Graduate Student
> Department of Computer Science and Electrical Engineering
> University of Maryland, Baltimore County

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ It's impossible for everything to be true. +

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