Received: from maia.hub.org (maia-3.hub.org [200.46.204.243])
	by mail.postgresql.org (Postfix) with ESMTP id 9040BB5DBCA
	for <pgsql-admin-postgresql.org@mail.postgresql.org>;
	Fri,  1 Jul 2011 16:09:57 -0300 (ADT)
Received: from mail.postgresql.org ([200.46.204.86])
	by maia.hub.org (mx1.hub.org [200.46.204.243]) (amavisd-maia,
	port 10024) with ESMTP id 85602-08 for
	<pgsql-admin-postgresql.org@mail.postgresql.org>;
	Fri,  1 Jul 2011 19:09:51 +0000 (UTC)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.6
Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130])
	by mail.postgresql.org (Postfix) with ESMTP id 4560FB5DBC1
	for <pgsql-admin@postgresql.org>; Fri,  1 Jul 2011 16:09:51 -0300 (ADT)
Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1])
	by sss.pgh.pa.us (8.14.2/8.14.2) with ESMTP id p61J9oMb002814;
	Fri, 1 Jul 2011 15:09:50 -0400 (EDT)
To: Bob Lunney <bob_lunney@yahoo.com>
cc: "pgsql-admin@postgresql.org" <pgsql-admin@postgresql.org>
Subject: Re: Parallel pg_dump on a single database 
In-reply-to: <877182.59904.qm@web39704.mail.mud.yahoo.com> 
References: <877182.59904.qm@web39704.mail.mud.yahoo.com>
Comments: In-reply-to Bob Lunney <bob_lunney@yahoo.com>
	message dated "Fri, 24 Jun 2011 14:21:36 -0700"
Date: Fri, 01 Jul 2011 15:09:50 -0400
Message-ID: <2813.1309547390@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Spam-Status: No, hits=-1.91 tagged_above=-10 required=5 tests=BAYES_00=-1.9,
	T_RP_MATCHES_RCVD=-0.01
X-Spam-Level: 
X-Archive-Number: 201107/10
X-Sequence-Number: 37789

Bob Lunney <bob_lunney@yahoo.com> writes:
> Is it possible (or smart!) to run multiple pg_dumps simulataneously on a single database, dumping different parts of the database to different files by using table and schema exclusion?  I'm attempting this and sometimes it works and sometimes when I check the dump files with 
>   pg_restore -Fc <dumpfile> > /dev/null

> I get 

>   pg_restore: [custom archiver] found unexpected block ID (4) when reading data -- expected 4238

That sure sounds like a bug.  What PG version are you using exactly?
Can you provide a more specific description of what you're doing,
so somebody else could reproduce this?

			regards, tom lane