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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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10
src/backend/tcop/postgres.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.451 2005/06/29 22:51:55 tgl Exp $
* $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.452 2005/07/04 04:51:49 tgl Exp $
*
* NOTES
* this is the "main" module of the postgres backend and
@ -2809,8 +2809,6 @@ PostgresMain(int argc, char *argv[], const char *username)
errhint("Try \"%s --help\" for more information.", argv[0])));
}
XLOGPathInit();
BaseInit();
}
else
@ -2841,12 +2839,14 @@ PostgresMain(int argc, char *argv[], const char *username)
Assert(DataDir);
ValidatePgVersion(DataDir);
/* Change into DataDir (if under postmaster, was done already) */
ChangeToDataDir();
/*
* Create lockfile for data directory.
*/
CreateDataDirLockFile(DataDir, false);
CreateDataDirLockFile(false);
XLOGPathInit();
BaseInit();
/*