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Improve sequence and sense of messages from pg_stop_backup(). 

Now doesn't report it is waiting until it actually is waiting,
plus message doesn't appear until at least 5 seconds wait, so
we avoid reporting the wait before we've given the archiver
a reasonable time to wake up and archive the file we just
created earlier in the function.
Also add new unconditional message to confirm safe completion.
Now a normal, healthy execution does not report waiting at
all, just safe completion.
This commit is contained in:
Simon Riggs 2010-04-18 18:44:53 +00:00
parent 2847de9df2
commit d38603bd97
1 changed files with 12 additions and 4 deletions
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16
src/backend/access/transam/xlog.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.399 2010/04/18 18:17:12 sriggs Exp $
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.400 2010/04/18 18:44:53 sriggs Exp $
*
*-------------------------------------------------------------------------
*/
@ -8290,6 +8290,7 @@ pg_stop_backup(PG_FUNCTION_ARGS)
int ich;
int seconds_before_warning;
int waits = 0;
bool reported_waiting = false;
if (!superuser())
ereport(ERROR,
@ -8431,9 +8432,6 @@ pg_stop_backup(PG_FUNCTION_ARGS)
BackupHistoryFileName(histfilename, ThisTimeLineID, _logId, _logSeg,
startpoint.xrecoff % XLogSegSize);
ereport(NOTICE,
(errmsg("pg_stop_backup cleanup done, waiting for required WAL segments to be archived")));
seconds_before_warning = 60;
waits = 0;
@ -8442,6 +8440,13 @@ pg_stop_backup(PG_FUNCTION_ARGS)
{
CHECK_FOR_INTERRUPTS();
if (!reported_waiting && waits > 5)
{
ereport(NOTICE,
(errmsg("pg_stop_backup cleanup done, waiting for required WAL segments to be archived")));
reported_waiting = true;
}
pg_usleep(1000000L);
if (++waits >= seconds_before_warning)
@ -8456,6 +8461,9 @@ pg_stop_backup(PG_FUNCTION_ARGS)
}
}
ereport(NOTICE,
(errmsg("pg_stop_backup complete, all required WAL segments have been archived")));
/*
* We're done. As a convenience, return the ending WAL location.
*/