diff --git a/doc/src/sgml/recovery-config.sgml b/doc/src/sgml/recovery-config.sgml
index 0f1ff34..a145a3f 100644
--- a/doc/src/sgml/recovery-config.sgml
+++ b/doc/src/sgml/recovery-config.sgml
@@ -289,12 +289,39 @@ restore_command = 'copy "C:\\server\\archivedir\\%f" "%p"' # Windows
- Specifies whether recovery should pause when the recovery target
- is reached. The default is true.
- This is intended to allow queries to be executed against the
- database to check if this recovery target is the most desirable
- point for recovery. The paused state can be resumed by using
- pg_xlog_replay_resume() (See
+ Alias for action_at_recovery_target, true is same as
+ action_at_recovery_target = pause and false
+ is same as action_at_recovery_target = promote.
+
+
+ This setting has no effect if is not
+ enabled, or if no recovery target is set.
+
+
+
+
+
+
+
+ action_at_recovery_target (enum)
+
+ action_at_recovery_target recovery parameter
+
+
+
+
+ Specifies what action the server should take once the recovery target is
+ reached. The default is pause, which means recovery will
+ be paused. promote means recovery process will finish and
+ the server will start to accept connections.
+ Finally shutdown will stop the server after reaching the
+ recovery target.
+
+ The intended use of pause setting is to allow queries to be
+ executed against the database to check if this recovery target is the
+ most desirable point for recovery. The paused state can be resumed by
+ using pg_xlog_replay_resume() (See
), which then
causes recovery to end. If this recovery target is not the
desired stopping point, then shutdown the server, change the
@@ -302,8 +329,23 @@ restore_command = 'copy "C:\\server\\archivedir\\%f" "%p"' # Windows
continue recovery.
- This setting has no effect if is not
- enabled, or if no recovery target is set.
+ The shutdown setting is useful to have instance ready at
+ exact replay point desired.
+ The instance will still be able to replay more WAL records (and in fact
+ will have to replay WAL records since last checkpoint next time it is
+ started).
+
+
+ Note that because recovery.conf will not be renamed when
+ action_at_recovery_target is set to shutdown,
+ any subsequent start will end with immediate shutdown unless the
+ configuration is changed or the recovery.conf is removed
+ manually.
+
+
+ This setting has no effect if no recovery target is set.
+ If is not enabled, a setting of
+ pause will act the same as shutdown.
diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 6053127..27138c2 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -228,7 +228,7 @@ static char *recoveryEndCommand = NULL;
static char *archiveCleanupCommand = NULL;
static RecoveryTargetType recoveryTarget = RECOVERY_TARGET_UNSET;
static bool recoveryTargetInclusive = true;
-static bool recoveryPauseAtTarget = true;
+static RecoveryTargetAction actionAtRecoveryTarget = RECOVERY_TARGET_ACTION_PAUSE;
static TransactionId recoveryTargetXid;
static TimestampTz recoveryTargetTime;
static char *recoveryTargetName;
@@ -4643,6 +4643,9 @@ readRecoveryCommandFile(void)
ConfigVariable *item,
*head = NULL,
*tail = NULL;
+ bool recoveryPauseAtTargetSet = false;
+ bool actionAtRecoveryTargetSet = false;
+
fd = AllocateFile(RECOVERY_COMMAND_FILE, "r");
if (fd == NULL)
@@ -4688,13 +4691,43 @@ readRecoveryCommandFile(void)
}
else if (strcmp(item->name, "pause_at_recovery_target") == 0)
{
+ bool recoveryPauseAtTarget;
+
if (!parse_bool(item->value, &recoveryPauseAtTarget))
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("parameter \"%s\" requires a Boolean value", "pause_at_recovery_target")));
+
ereport(DEBUG2,
(errmsg_internal("pause_at_recovery_target = '%s'",
item->value)));
+
+ actionAtRecoveryTarget = recoveryPauseAtTarget ?
+ RECOVERY_TARGET_ACTION_PAUSE :
+ RECOVERY_TARGET_ACTION_PROMOTE;
+
+ recoveryPauseAtTargetSet = true;
+ }
+ else if (strcmp(item->name, "action_at_recovery_target") == 0)
+ {
+ if (strcmp(item->value, "pause") == 0)
+ actionAtRecoveryTarget = RECOVERY_TARGET_ACTION_PAUSE;
+ else if (strcmp(item->value, "promote") == 0)
+ actionAtRecoveryTarget = RECOVERY_TARGET_ACTION_PROMOTE;
+ else if (strcmp(item->value, "shutdown") == 0)
+ actionAtRecoveryTarget = RECOVERY_TARGET_ACTION_SHUTDOWN;
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("invalid value for recovery parameter \"%s\"",
+ "action_at_recovery_target"),
+ errhint("The allowed values are \"pause\", \"promote\" and \"shutdown\".")));
+
+ ereport(DEBUG2,
+ (errmsg_internal("action_at_recovery_target = '%s'",
+ item->value)));
+
+ actionAtRecoveryTargetSet = true;
}
else if (strcmp(item->name, "recovery_target_timeline") == 0)
{
@@ -4859,6 +4892,25 @@ readRecoveryCommandFile(void)
RECOVERY_COMMAND_FILE)));
}
+ /*
+ * Check for mutually exclusive parameters
+ */
+ if (recoveryPauseAtTargetSet && actionAtRecoveryTargetSet)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("cannot set both \"%s\" and \"%s\" recovery parameters",
+ "pause_at_recovery_target",
+ "action_at_recovery_target"),
+ errhint("The \"pause_at_recovery_target\" is deprecated.")));
+
+
+ /*
+ * Override any inconsistent requests
+ */
+ if (actionAtRecoveryTarget == RECOVERY_TARGET_ACTION_PAUSE &&
+ standbyState == STANDBY_DISABLED)
+ actionAtRecoveryTarget = RECOVERY_TARGET_ACTION_SHUTDOWN;
+
/* Enable fetching from archive recovery area */
ArchiveRecoveryRequested = true;
@@ -6408,10 +6460,37 @@ StartupXLOG(void)
* end of main redo apply loop
*/
- if (recoveryPauseAtTarget && reachedStopPoint)
+ if (reachedStopPoint)
{
- SetRecoveryPause(true);
- recoveryPausesHere();
+ if (!reachedConsistency)
+ ereport(FATAL,
+ (errmsg("requested recovery stop point is before consistent recovery point")));
+
+ /*
+ * This is the last point where we can restart recovery with a
+ * new recovery target, if we shutdown and begin again. After
+ * this, Resource Managers may choose to do permanent corrective
+ * actions at end of recovery.
+ */
+ switch (actionAtRecoveryTarget)
+ {
+ case RECOVERY_TARGET_ACTION_SHUTDOWN:
+ /*
+ * exit with special return code to request shutdown
+ * of postmaster. Log messages issued from
+ * postmaster.
+ */
+ proc_exit(2);
+
+ case RECOVERY_TARGET_ACTION_PAUSE:
+ SetRecoveryPause(true);
+ recoveryPausesHere();
+
+ /* drop into promote */
+
+ case RECOVERY_TARGET_ACTION_PROMOTE:
+ break;
+ }
}
/* Allow resource managers to do any required cleanup. */
@@ -6429,6 +6508,7 @@ StartupXLOG(void)
ereport(LOG,
(errmsg("last completed transaction was at log time %s",
timestamptz_to_str(xtime))));
+
InRedo = false;
}
else
@@ -6489,13 +6569,6 @@ StartupXLOG(void)
(EndOfLog < minRecoveryPoint ||
!XLogRecPtrIsInvalid(ControlFile->backupStartPoint)))
{
- if (reachedStopPoint)
- {
- /* stopped because of stop request */
- ereport(FATAL,
- (errmsg("requested recovery stop point is before consistent recovery point")));
- }
-
/*
* Ran off end of WAL before reaching end-of-backup WAL record, or
* minRecoveryPoint. That's usually a bad sign, indicating that you
diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index 6220a8e..fbb2a49 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -509,6 +509,7 @@ static void ShmemBackendArrayRemove(Backend *bn);
/* Macros to check exit status of a child process */
#define EXIT_STATUS_0(st) ((st) == 0)
#define EXIT_STATUS_1(st) (WIFEXITED(st) && WEXITSTATUS(st) == 1)
+#define EXIT_STATUS_2(st) (WIFEXITED(st) && WEXITSTATUS(st) == 2)
#ifndef WIN32
/*
@@ -2555,6 +2556,15 @@ reaper(SIGNAL_ARGS)
continue;
}
+ if (EXIT_STATUS_2(exitstatus))
+ {
+ ereport(LOG,
+ (errmsg("shutdown at recovery target")));
+ pmState = PM_WAIT_BACKENDS;
+ /* PostmasterStateMachine logic does the rest */
+ continue;
+ }
+
/*
* Unexpected exit of startup process (including FATAL exit)
* during PM_STARTUP is treated as catastrophic. There are no
diff --git a/src/include/access/xlog_internal.h b/src/include/access/xlog_internal.h
index 19b2ef8..04866e6 100644
--- a/src/include/access/xlog_internal.h
+++ b/src/include/access/xlog_internal.h
@@ -204,6 +204,16 @@ typedef struct xl_end_of_recovery
} xl_end_of_recovery;
/*
+ * Recovery target action.
+ */
+typedef enum
+{
+ RECOVERY_TARGET_ACTION_PAUSE,
+ RECOVERY_TARGET_ACTION_PROMOTE,
+ RECOVERY_TARGET_ACTION_SHUTDOWN,
+} RecoveryTargetAction;
+
+/*
* Method table for resource managers.
*
* This struct must be kept in sync with the PG_RMGR definition in