Re: Back to my pg_upgrade stoppage problem

From: John Scalia <jayknowsunix(at)gmail(dot)com>
To: Bruce Momjian <bruce(at)momjian(dot)us>
Cc: "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>
Subject: Re: Back to my pg_upgrade stoppage problem
Date: 2015-01-22 13:59:23
Message-ID: 54C1023B.1080508@gmail.com
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I did manage to get everything working properly yesterday. What I did not first realize is that while pg_upgrade requires both the original server and the new one to be off, if
your original server is the primary in a streaming replication cluster, then the standby(s) must still be running when you start pg_upgrade. The temporary table creation appeared
hung as the primary was waiting on the standby to commit the change, but it wasn't running. After resolving that, I hit another snag where pgpool had a function installed that I
couldn't easily find to remove it. pg_upgrade would fail stating it couldn't find the function's *.so to apply to the new instance. I ended up pulling a pg_dumpall from the
original instance, and manually looked in that to find anything with the name pgpool in it. I then removed those from the Db, and pg_upgrade completed successfully.

Thanks to everyone for their assistance. I just needed to think a little harder on what was happening.

On 1/21/2015 10:46 PM, Bruce Momjian wrote:
> On Fri, Jan 16, 2015 at 10:56:19AM -0500, John Scalia wrote:
>> Hi all,
>>
>> I'm back to trying to figure out the pg_upgrade stoppage problem on
>> my V9.4.0 upgrade from V9.3.3. As stated earlier, my environment is
>> CentOS 6.5 kernel and the server is virtualized, but has been
>> running 9.3.3 for some time now. I ran pg_upgrade on this system as
>> follows, I apologize for the length of the message but I putting the
>> entire screen capture into this. You can see at the end that it got
>> hung up trying to create a temporary table, but the server has been
>> on this step for nearly an hour now. It had successfully performed
>> several queries prior to this, and those were successful.
> I suggest you upgrade to V9.3.5 at a minimum. Second, try the why on
> its own to see if it works.
>

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