Make btree index structure adjustments and WAL logging changes needed to

support btree compaction, as per proposal of a few days ago.  btree index
pages no longer store parent links, instead they have a level indicator
(counting up from zero for leaf pages).  The FixBTree recovery logic is
removed, and replaced by code that detects missing parent-level insertions
during WAL replay.  Also, generate appropriate WAL entries when updating
btree metapage and when building a btree index from scratch.  I believe
btree indexes are now completely WAL-legal for the first time.
initdb forced due to index and WAL changes.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/include/access/xlog.h b/src/include/access/xlog.h
index 1659c65b930..a1be9bacf3b 100644
--- a/src/include/access/xlog.h
+++ b/src/include/access/xlog.h
@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: xlog.h,v 1.40 2002/11/15 02:44:57 momjian Exp $
+ * $Id: xlog.h,v 1.41 2003/02/21 00:06:22 tgl Exp $
  */
 #ifndef XLOG_H
 #define XLOG_H
@@ -145,10 +145,12 @@ typedef XLogPageHeaderData *XLogPageHeader;
  */
 typedef struct RmgrData
 {
-	char	   *rm_name;
+	const char *rm_name;
 	void		(*rm_redo) (XLogRecPtr lsn, XLogRecord *rptr);
 	void		(*rm_undo) (XLogRecPtr lsn, XLogRecord *rptr);
 	void		(*rm_desc) (char *buf, uint8 xl_info, char *rec);
+	void		(*rm_startup) (void);
+	void		(*rm_cleanup) (void);
 } RmgrData;
 
 extern RmgrData RmgrTable[];