Craig Ringer <craig(at)postnewspapers(dot)com(dot)au> writes:
> This message is very weird: "could not read from file "pg_clog/02CD" at
> offset 73728: Success".
Probably indicates an attempted read from beyond EOF. The main
relation-access code paths have been fixed to give a more intelligible
error message about that case, but it doesn't look like slru.c has been.
regards, tom lane