Re: pg_upgrade 8.3 to 9.0, shutdown is to slow

Bernhard Schrader wrote:
> Am Donnerstag, den 27.01.2011, 12:09 -0500 schrieb Bruce Momjian:
> > Scott Marlowe wrote:
> > > > My initial reaction is that something is wrong with your system, either
> > > > the I/O or the way it is being shutdown by the script. ?I would start to
> > > > look in the script and do some pg_ctl tests starting/stopping the
> > > > server.
> > >
> > > It could be that his application or whatever is making connections
> > > while he's trying to do this. An open connection that's actually
> > > doing something will stop a normal shutdown.
> > >
> > > Is there a reason the pg upgrade script does not use -m fast?
> >
> > Uh, well, I assume that the person has already shut down all db
> > connections, and opened it only for super-users. If the system is not
> > shutting down, that should signal to the user that they have not locked
> > down the system properly. We would not want someone to connect during
> > pg_upgrade processing, and doing -m fast is not going to help with that.
> >
> > --
> > Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
> > EnterpriseDB http://enterprisedb.com
> >
> > + It's impossible for everything to be true. +
> >
>
> Hi,
>
> well, i shut down every client connection that could occur, but with a
> ps auxf i get following output:
>
> postgres 26255 0.0 0.0 426396 2044 ? Ss 14:21 0:00 \_ postgres: writer
> process
> postgres 26257 0.0 0.0 154368 1616 ? Ss 14:21 0:00 \_ postgres: stats
> collector process
> postgres 26258 0.0 0.1 427612 4188 ? Ss 14:21 0:00 \_ postgres: grepo
> DB_NAME LOCAL_IP(PORT) idle
>
> so there are some connections, but as far as i can say, nothing from a
> client program, these connections belong to postgres itself??!? is that
> possible? pg_upgrade has to check the tables anyway, so there must be
> this connection, or am i wrong?!?

The first two are normal processes you will see when you start Postgres.
That last one looks odd --- did you mask it somehow? That looks like an
active idle connection for user 'grepo'.

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

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