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Arrange for the postmaster (and standalone backends, initdb, etc) to

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chdir into PGDATA and subsequently use relative paths instead of absolute
paths to access all files under PGDATA.  This seems to give a small
performance improvement, and it should make the system more robust
against naive DBAs doing things like moving a database directory that
has a live postmaster in it.  Per recent discussion.
This commit is contained in:
Tom Lane
2005-07-04 04:51:52 +00:00
parent 7504f0bae8
commit eb5949d190
27 changed files with 364 additions and 474 deletions
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19
src/backend/postmaster/syslogger.c
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@ -18,7 +18,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/postmaster/syslogger.c,v 1.15 2005/04/19 03:13:59 momjian Exp $
* $PostgreSQL: pgsql/src/backend/postmaster/syslogger.c,v 1.16 2005/07/04 04:51:47 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -422,17 +422,9 @@ SysLogger_Start(void)
#endif
/*
* create log directory if not present; ignore errors
* Create log directory if not present; ignore errors
*/
if (is_absolute_path(Log_directory))
mkdir(Log_directory, 0700);
else
{
filename = palloc(MAXPGPATH);
snprintf(filename, MAXPGPATH, "%s/%s", DataDir, Log_directory);
mkdir(filename, 0700);
pfree(filename);
}
mkdir(Log_directory, 0700);
/*
* The initial logfile is created right in the postmaster, to verify
@ -823,10 +815,7 @@ logfile_getname(pg_time_t timestamp)
filename = palloc(MAXPGPATH);
if (is_absolute_path(Log_directory))
snprintf(filename, MAXPGPATH, "%s/", Log_directory);
else
snprintf(filename, MAXPGPATH, "%s/%s/", DataDir, Log_directory);
snprintf(filename, MAXPGPATH, "%s/", Log_directory);
len = strlen(filename);