On Sun, Dec 29, 2013 at 02:48:21AM -0500, Tom Lane wrote:
> There are three or four different bugs here, but the key points are:
> 
> 1. pg_resetxlog is diligently trashing every single WAL file in pg_xlog/,
> and then failing (by virtue of some ancient OS X bug in readdir()), so
> that it doesn't get to the point of recreating a WAL file with a
> checkpoint record.
> 
> 2. pg_resetxlog already rewrote pg_control, which might not be such a hot
> idea; but whether it had or not, pg_control's last-checkpoint pointer
> would be pointing to a WAL file that is not in pg_xlog/ now.
> 
> 3. pg_upgrade ignores the fact that pg_resetxlog failed, and keeps going.

Does pg_resetxlog return a non-zero exit status?  If so, pg_upgrade
should have caught that and exited.

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

  + Everyone has their own god. +


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