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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/bootstrap/bootstrap.c
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@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.204 2005/05/06 17:24:52 tgl Exp $
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.205 2005/07/04 04:51:45 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -365,15 +365,17 @@ BootstrapMain(int argc, char *argv[])
Assert(DataDir);
ValidatePgVersion(DataDir);
/* Change into DataDir (if under postmaster, should be done already) */
if (!IsUnderPostmaster)
ChangeToDataDir();
/* If standalone, create lockfile for data directory */
if (!IsUnderPostmaster)
CreateDataDirLockFile(DataDir, false);
CreateDataDirLockFile(false);
SetProcessingMode(BootstrapProcessing);
IgnoreSystemIndexes(true);
XLOGPathInit();
BaseInit();
/* needed to get LWLocks */