Hi,
if you split configuration and data by setting data_directory,
postgresql.auto.conf is writen to the data directory
(/var/lib/postgresql/9.4/main in Debian), but tried to be read from
the etc directory (/etc/postgresql/9.4/main).
One place to fix it would be in ProcessConfigFile in
src/backend/utils/misc/guc-file.l:162 by always setting
CallingFileName = NULL in src/backend/utils/misc/guc-file.l:162, but
that breaks later in AbsoluteConfigLocation() when data_directory is
NULL. (As the comment in ProcessConfigFile says.)
I'm not sure where to break that dependency loop - the fix itself
seems easy, just don't tell to look for postgresql.auto.conf next to
ConfigFileName, but in the data_directory.
Christoph
--
cb@df7cb.de | http://www.df7cb.de/
