Re: pg_upgrade hangs

On Thu, Aug 14, 2014 at 09:30:13AM -0400, John Scalia wrote:
> Well, it's now gotten much worse, and I really do not understand how
> this is failing. I started off this morning trying to run pg_grade
> with strace in the hope that I could find something hanging up, but
> pg-upgrade is now failing and exiting very early. Almost immediately
> after reporting "Checking cluster versions ok", it throws a SQL
> command failed where it tried to create the temporary table
> 'info_rels'. The error is that type "info_rels" already exists.
>
> My first thought was that a previous attempt had partially succeeded
> and left some garbage in the new 9.3 instance. So, I deleted
> everything in the 9.3 data directory and did a new initdb there, but
> the problem continues to reoccur. I have since checked the old 9.2
> database, including the template1 portion, but I don't see an
> info_rels table in any of these. (I checked using "select * from
> pg_tables;") I'd really like to know why it's failing here. Where is
> it finding this info_rels table and why can't I find it? Is it
> deleting it after it spits out this error? And is this table
> something that gets repeatedly created and dropped during a
> pg_upgrade?

Well, you managed to show me nothing, so I can't really help you
further.  info_rels is an internal C struture so I can't guess what is
failing. I suggest you show the error, and read the message and then
look in the log file it recommends, if any.

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + Everyone has their own god. +