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Re: BUG #5735: pg_upgrade thinks that it did not start the old server

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Arturas Mazeika <mazeika(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Dave Page <dpage(at)pgadmin(dot)org>, pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #5735: pg_upgrade thinks that it did not start the old server
Date: 2010-11-11 23:36:52
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-bugs
Arturas Mazeika wrote:
> On 11/10/2010 05:32 AM, Tom Lane wrote:
> > Bruce Momjian<bruce(at)momjian(dot)us>  writes:
> >    
> >>> On 10/30/2010 7:33 PM, Dave Page wrote:
> >>>        
> >>>> upgrade from a 32bit 8.3 server to a 64 bit 9.0 server, which isn't
> >>>> going to work without a dump/restore. With pg_upgrade, the two builds
> >>>> need to be from the same platform, same word size, and have the same
> >>>> configuration for certain settings like integer_datetimes.
> >>>>          
> >> Can anyone suggest a way pg_upgrade could detect an upgrade from a
> >> 32-bit to 64-bit cpu and throw an error?
> >>      
> > Surely it does that already, as a result of comparing pg_control
> > contents.
> >    
> The HTML manual might need an update or a small clarification too. 
> Currently, it does not seem that the manual explicitly states that 
> ``pg_upgrade is not applicable in upgrading 32bit systems to 64bit 
> ones''. A good place to write such a sentence would be at the beginning 
> of [1], at the intro of F.32. pg_upgrade. Maybe the documentation 
> already implicitly states that in F.32.4. Limitations in Migrating from 
> PostgreSQL 8.3 section of [1] by this description:
> ``For Windows users, note that due to different integer datetimes 
> settings used by the one-click installer and the MSI installer, it is 
> only possible to upgrade from version 8.3 of the one-click distribution 
> to version 8.4 or later of the one-click distribution. It is not 
> possible to upgrade from the MSI installer to the one-click installer.''
> Unfortunately, I could not understand in full detail the above.
> Thanks,
> arturas
> [1]

I have added a mention about 32/64-bit isssues to the pg_upgrade manual
page, attached.

  Bruce Momjian  <bruce(at)momjian(dot)us>

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

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