Forbid setval() during recovery. This prevents the PANIC reported by

hlinnaka · hlinnaka · commit 94f610b16342 · 2010-02-19T06:29:19.000Z
Erik Rijkers. Patch by Andres Freund.
diff --git a/src/backend/commands/sequence.c b/src/backend/commands/sequence.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/commands/sequence.c,v 1.166 2010/02/14 18:42:14 rhaas Exp $
+ *	  $PostgreSQL: pgsql/src/backend/commands/sequence.c,v 1.167 2010/02/19 06:29:19 heikki Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -736,6 +736,9 @@ do_setval(Oid relid, int64 next, bool iscalled)
 	Buffer		buf;
 	Form_pg_sequence seq;
 
+	/* setval() writes to database and must be prevented during recovery */
+	PreventCommandDuringRecovery();
+
 	/* open and AccessShareLock sequence */
 	init_sequence(relid, &elm, &seqrel);
 

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@`
`8`	`8`	`*`
`9`	`9`	`*`
`10`	`10`	`* IDENTIFICATION`
`11`		`- * $PostgreSQL: pgsql/src/backend/commands/sequence.c,v 1.166 2010/02/14 18:42:14 rhaas Exp $`
	`11`	`+ * $PostgreSQL: pgsql/src/backend/commands/sequence.c,v 1.167 2010/02/19 06:29:19 heikki Exp $`
`12`	`12`	`*`
`13`	`13`	`*-------------------------------------------------------------------------`
`14`	`14`	`*/`
`@@ -736,6 +736,9 @@ do_setval(Oid relid, int64 next, bool iscalled)`
`736`	`736`	`Buffer buf;`
`737`	`737`	`Form_pg_sequence seq;`
`738`	`738`
	`739`	`+ /* setval() writes to database and must be prevented during recovery */`
	`740`	`+ PreventCommandDuringRecovery();`
	`741`	`+`
`739`	`742`	`/* open and AccessShareLock sequence */`
`740`	`743`	`init_sequence(relid, &elm, &seqrel);`
`741`	`744`