Обсуждение: BUG #5276: pg_ctl reads data directory on -D instead of postgresql.conf directoryh

The following bug has been logged online:

Bug reference:      5276
Logged by:          James Bellinger
Email address:      jfb@zer7.com
PostgreSQL version: 8.4.2
Operating system:   Ubuntu 9.10
Description:        pg_ctl reads data directory on -D instead of
postgresql.conf directoryh
Details:

While on startup, pg_ctl (correctly) looks in the directory specified by -D
for postgresql.conf, and then uses that to determine the data directory,
when stopping it actually expects the directories to be the same and in
doing so looks for the PID file in the given directory. As a result, on
start one needs to use the .conf directory with -D, and on stop the data
directory.

It's not a big deal, but for consistency's sake it ought to read the .conf
file to get the data directory on stop.

"James Bellinger" <jfb@zer7.com> writes:
> While on startup, pg_ctl (correctly) looks in the directory specified by -D
> for postgresql.conf, and then uses that to determine the data directory,
> when stopping it actually expects the directories to be the same and in
> doing so looks for the PID file in the given directory. As a result, on
> start one needs to use the .conf directory with -D, and on stop the data
> directory.

Your premise is wrong --- pg_ctl does not read postgresql.conf at any
time.  It's not intended to be used in a scenario where the
data_directory configuration option is being used.

There have been previous discussions about trying to teach it to read
the config file, but the effort needed seems far out of proportion to
the benefits :-(

            regards, tom lane