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Code

Make fast promotion the default promotion mode.

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Continue to allow a request for synchronous
checkpoints as a mechanism in case of problems.
This commit is contained in:
Simon Riggs 2013-04-24 12:21:18 +01:00
parent 173c252bb2
commit 2317a63328
2 changed files with 8 additions and 24 deletions
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15
src/backend/access/transam/xlog.c
View File

@ -9906,19 +9906,7 @@ CheckForStandbyTrigger(void)
fast_promote = false; fast_promote = false;
} }
/* ereport(LOG, (errmsg("received promote request")));
* We only look for fast promote via the pg_ctl promote option.
* It would be possible to extend trigger file support for the
* fast promotion option but that wouldn't be backwards compatible
* anyway and we're looking to focus further work on the promote
* option as the right way to signal end of recovery.
*/
if (fast_promote)
ereport(LOG,
(errmsg("received fast promote request")));
else
ereport(LOG,
(errmsg("received promote request")));
ResetPromoteTriggered(); ResetPromoteTriggered();
triggered = true; triggered = true;
@ -9934,6 +9922,7 @@ CheckForStandbyTrigger(void)
(errmsg("trigger file found: %s", TriggerFile))); (errmsg("trigger file found: %s", TriggerFile)));
unlink(TriggerFile); unlink(TriggerFile);
triggered = true; triggered = true;
fast_promote = true;
return true; return true;
} }
return false; return false;

15
src/bin/pg_ctl/pg_ctl.c
View File

@ -1107,13 +1107,12 @@ do_promote(void)
} }
/* /*
* Use two different kinds of promotion file so we can understand * For 9.3 onwards, use fast promotion as the default option.
* the difference between smart and fast promotion. * Promotion with a full checkpoint is still possible by writing
* a file called "promote", e.g.
* snprintf(promote_file, MAXPGPATH, "%s/promote", pg_data);
*/ */
if (shutdown_mode >= FAST_MODE)
snprintf(promote_file, MAXPGPATH, "%s/fast_promote", pg_data); snprintf(promote_file, MAXPGPATH, "%s/fast_promote", pg_data);
else
snprintf(promote_file, MAXPGPATH, "%s/promote", pg_data);
if ((prmfile = fopen(promote_file, "w")) == NULL) if ((prmfile = fopen(promote_file, "w")) == NULL)
{ {
@ -1778,7 +1777,7 @@ do_help(void)
" [-o \"OPTIONS\"]\n"), progname); " [-o \"OPTIONS\"]\n"), progname);
printf(_(" %s reload [-D DATADIR] [-s]\n"), progname); printf(_(" %s reload [-D DATADIR] [-s]\n"), progname);
printf(_(" %s status [-D DATADIR]\n"), progname); printf(_(" %s status [-D DATADIR]\n"), progname);
printf(_(" %s promote [-D DATADIR] [-s] [-m PROMOTION-MODE]\n"), progname); printf(_(" %s promote [-D DATADIR] [-s]\n"), progname);
printf(_(" %s kill SIGNALNAME PID\n"), progname); printf(_(" %s kill SIGNALNAME PID\n"), progname);
#if defined(WIN32) || defined(__CYGWIN__) #if defined(WIN32) || defined(__CYGWIN__)
printf(_(" %s register [-N SERVICENAME] [-U USERNAME] [-P PASSWORD] [-D DATADIR]\n" printf(_(" %s register [-N SERVICENAME] [-U USERNAME] [-P PASSWORD] [-D DATADIR]\n"
@ -1817,10 +1816,6 @@ do_help(void)
printf(_(" fast quit directly, with proper shutdown\n")); printf(_(" fast quit directly, with proper shutdown\n"));
printf(_(" immediate quit without complete shutdown; will lead to recovery on restart\n")); printf(_(" immediate quit without complete shutdown; will lead to recovery on restart\n"));
printf(_("\nPromotion modes are:\n"));
printf(_(" smart promote after performing a checkpoint\n"));
printf(_(" fast promote quickly without waiting for checkpoint completion\n"));
printf(_("\nAllowed signal names for kill:\n")); printf(_("\nAllowed signal names for kill:\n"));
printf(" ABRT HUP INT QUIT TERM USR1 USR2\n"); printf(" ABRT HUP INT QUIT TERM USR1 USR2\n");