Re: create tablespace fails silently, or succeeds improperly

Tom Lane wrote:
> Bruce Momjian <bruce@momjian.us> writes:
> > Tom Lane wrote:
> >> Bruce Momjian <bruce@momjian.us> writes:
> >>> Looking at the pg_upgrade code some more, I found that it was not
> >>> removing the PG_VERSION file when deleting <= 8.4 tablespace files. 
> >>> This might confuse administrators so the attached patch adds the removal
> >>> of PG_VERSION.  I would like to apply this to master and 9.0.X.
> >> 
> >> ... why is that a good idea?
> 
> > The script already deletes the 8.4 database directories, but leaves
> > PG_VERSION behind.  Why keep it when all the 8.4 data is gone?  The
> > script also dates PGDATA for 8.4, so there is nothing left pointing to
> > that directory.
> 
> Oh, I misunderstood: I thought you were proposing to do this as an
> automatic action inside pg_upgrade.  If it's part of the cleanup script,
> it's fine.

Yes, never automatic.  You can always roll back after pg_upgrade
completes.  Once you start the new server, only then can you not go
back.

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + It's impossible for everything to be true. +