On Mon, Aug 27, 2012 at 10:17:43PM -0400, Bruce Momjian wrote:
> Seems pg_ctl would also need some cleanup if we change the error
> message and/or timing.
>
> I am thinking we should just change the error message in the postmaster
> and pg_ctl to say the file is empty, and call it done (no hint message).
> If we do want a hint, say that either the file is stale from a crash or
> another postmaster is starting up, and let the user diagnose it.
Updated patch attached which just reports the file as empty. I assume
we don't want the extra text output for pg_ctl like we do for the
backend.
--
Bruce Momjian <br...@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
diff --git a/src/backend/utils/init/miscinit.c b/src/backend/utils/init/miscinit.c
new file mode 100644
index 775d71f..9f0a58a
*** a/src/backend/utils/init/miscinit.c
--- b/src/backend/utils/init/miscinit.c
*************** CreateLockFile(const char *filename, boo
*** 766,771 ****
--- 766,781 ----
filename)));
close(fd);
+ if (len == 0)
+ {
+ ereport(FATAL,
+ (errcode(ERRCODE_LOCK_FILE_EXISTS),
+ errmsg("lock file \"%s\" is empty", filename),
+ errhint(
+ "Either another server is starting, or the lock file is the remnant\n"
+ "of a previous server startup crash.")));
+ }
+
buffer[len] = '\0';
encoded_pid = atoi(buffer);
diff --git a/src/bin/pg_ctl/pg_ctl.c b/src/bin/pg_ctl/pg_ctl.c
new file mode 100644
index af8d8b2..0be0f2d
*** a/src/bin/pg_ctl/pg_ctl.c
--- b/src/bin/pg_ctl/pg_ctl.c
*************** get_pgpid(void)
*** 292,299 ****
}
if (fscanf(pidf, "%ld", &pid) != 1)
{
! write_stderr(_("%s: invalid data in PID file \"%s\"\n"),
progname, pid_file);
exit(1);
}
fclose(pidf);
--- 292,304 ----
}
if (fscanf(pidf, "%ld", &pid) != 1)
{
! /* Is the file empty? */
! if (feof(pidf))
! write_stderr(_("%s: the PID file \"%s\" is empty\n"),
progname, pid_file);
+ else
+ write_stderr(_("%s: invalid data in PID file \"%s\"\n"),
+ progname, pid_file);
exit(1);
}
fclose(pidf);
--
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