Hi all,
Here is the first draft for the spec of postmaster starting/stopping
tool. I have named it as "pg_ctl."
o pg_ctl [-w] start
start up postmaster. If -w is specified, it will wait for the database
up and running. Options for postmaster should be placed in
$PGDATA/postmaster.conf.
Note: pg_ctl assumes that postmaster writes its pid into
$PGDATA/postmaster.pid.
o pg_ctl [-w][-s|-f|-i] stop
stop postmaster. If -w is specified, it will wait for the database
shutting down.
Shutdown mode can be one of:
-s: smart shutdown (default)-f: fast shutdown-i: immediate shutdown
o pg_ctl [-w][-s|-f|-i] restart
just stop and start postmaster.
o pg_ctl status
report the status of postmaster. It would be nice if it could report,
for example, the number of backends running (and their pids) etc. For
this purpose I propose followings:
(1) Add another protocol STATUS_REQUEST_CODE to libpq/pqcomm.h.
(2) Add code to process the protocol in
postmaster/postmaster.c:readStartupPacket().
Comments, suggestions are welcome.
--
Tatsuo Ishii
