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Fix upper limit of superuser_reserved_connections, add limit for wal_senders

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Should be limited to the maximum number of connections excluding
autovacuum workers, not including.

Add similar check for max_wal_senders, which should never be higher than
max_connections.
This commit is contained in:
Magnus Hagander
2012-08-10 14:49:03 +02:00
parent 86ece4bff6
commit 63e719ec51
2 changed files with 16 additions and 7 deletions
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7
src/backend/postmaster/postmaster.c
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@ -759,11 +759,16 @@ PostmasterMain(int argc, char *argv[])
/*
* Check for invalid combinations of GUC settings.
*/
if (ReservedBackends >= MaxBackends)
if (ReservedBackends >= MaxConnections)
{
write_stderr("%s: superuser_reserved_connections must be less than max_connections\n", progname);
ExitPostmaster(1);
}
if (max_wal_senders >= MaxConnections)
{
write_stderr("%s: max_wal_senders must be less than max_connections\n", progname);
ExitPostmaster(1);
}
if (XLogArchiveMode && wal_level == WAL_LEVEL_MINIMAL)
ereport(ERROR,
(errmsg("WAL archival (archive_mode=on) requires wal_level \"archive\" or \"hot_standby\"")));