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Add comments about definitions that may affect PG_CONTROL_VERSION,

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per recent unintended-initdb-forcing fiasco
This commit is contained in:
Alvaro Herrera 2010-06-03 20:37:13 +00:00
parent 58028240bb
commit 667440162c
1 changed files with 6 additions and 2 deletions

8
src/include/catalog/pg_control.h

@ -8,7 +8,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/pg_control.h,v 1.56 2010/06/03 14:50:30 tgl Exp $
* $PostgreSQL: pgsql/src/include/catalog/pg_control.h,v 1.57 2010/06/03 20:37:13 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@ -26,6 +26,7 @@
/*
* Body of CheckPoint XLOG records. This is declared here because we keep
* a copy of the latest one in pg_control for possible disaster recovery.
* Changing this struct requires a PG_CONTROL_VERSION bump.
*/
typedef struct CheckPoint
{
@ -60,7 +61,10 @@ typedef struct CheckPoint
#define XLOG_PARAMETER_CHANGE 0x60
/* System status indicator */
/*
* System status indicator. Note this is stored in pg_control; if you change
* it, you must bump PG_CONTROL_VERSION
*/
typedef enum DBState
{
DB_STARTUP = 0,