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Add code to dump contents of free space map into $PGDATA/global/pg_fsm.cache

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at database shutdown, and then load it again at database startup.  This
preserves our hard-won knowledge of free space across restarts (given
an orderly shutdown, that is).
This commit is contained in:
Tom Lane
2003-03-06 00:04:27 +00:00
parent 21591967bc
commit 4b6c198a6a
4 changed files with 376 additions and 83 deletions
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5
src/backend/bootstrap/bootstrap.c
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@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/bootstrap/bootstrap.c,v 1.147 2002/12/15 16:17:38 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/bootstrap/bootstrap.c,v 1.148 2003/03/06 00:04:27 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -34,6 +34,7 @@
#include "executor/executor.h"
#include "libpq/pqsignal.h"
#include "miscadmin.h"
#include "storage/freespace.h"
#include "storage/ipc.h"
#include "storage/proc.h"
#include "tcop/tcopprot.h"
@ -398,10 +399,12 @@ BootstrapMain(int argc, char *argv[])
case BS_XLOG_STARTUP:
StartupXLOG();
LoadFreeSpaceMap();
proc_exit(0); /* done */
case BS_XLOG_SHUTDOWN:
ShutdownXLOG();
DumpFreeSpaceMap();
proc_exit(0); /* done */
default: