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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/include/storage/freespace.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: freespace.h,v 1.9 2003/03/04 21:51:22 tgl Exp $
* $Id: freespace.h,v 1.10 2003/03/06 00:04:27 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -60,6 +60,9 @@ extern void FreeSpaceMapForgetDatabase(Oid dbid);
extern void PrintFreeSpaceMapStatistics(int elevel);
extern void DumpFreeSpaceMap(void);
extern void LoadFreeSpaceMap(void);
#ifdef FREESPACE_DEBUG
extern void DumpFreeSpace(void);
#endif