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Add a field to the first page of each WAL file to indicate the

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XLOG_BLCKSZ.  This ought to help in preventing configuration mismatch
problems if anyone tries to ship PITR files between servers compiled
with different XLOG_BLCKSZ settings.  Simon Riggs
This commit is contained in:
Tom Lane
2006-04-05 03:34:05 +00:00
parent e6140d9052
commit 09b5271ebd
3 changed files with 15 additions and 4 deletions
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5
src/include/access/xlog_internal.h
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@@ -11,7 +11,7 @@
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/xlog_internal.h,v 1.12 2006/04/03 23:35:04 tgl Exp $
* $PostgreSQL: pgsql/src/include/access/xlog_internal.h,v 1.13 2006/04/05 03:34:05 tgl Exp $
*/
#ifndef XLOG_INTERNAL_H
#define XLOG_INTERNAL_H
@@ -69,7 +69,7 @@ typedef struct XLogContRecord
/*
* Each page of XLOG file has a header like this:
*/
#define XLOG_PAGE_MAGIC 0xD05D /* can be used as WAL version indicator */
#define XLOG_PAGE_MAGIC 0xD05E /* can be used as WAL version indicator */
typedef struct XLogPageHeaderData
{
@@ -93,6 +93,7 @@ typedef struct XLogLongPageHeaderData
XLogPageHeaderData std; /* standard header fields */
uint64 xlp_sysid; /* system identifier from pg_control */
uint32 xlp_seg_size; /* just as a cross-check */
uint32 xlp_xlog_blcksz; /* just as a cross-check */
} XLogLongPageHeaderData;
#define SizeOfXLogLongPHD MAXALIGN(sizeof(XLogLongPageHeaderData))