From d8b74f9220775736917b7fc08bbe397d7e2eedcd Mon Sep 17 00:00:00 2001 From: Denis Laxalde Date: Wed, 20 Jan 2021 17:25:58 +0100 Subject: [PATCH] Set default transactions to read-only at servers start in pg_upgrade In essence, this is for a similar reason that we use a restricted socket access from f763b77193b04eba03a1f4ce46df34dc0348419e because background workers may produce undesired activities during the upgrade. Author: Denis Laxalde Co-authored-by: Jehan-Guillaume de Rorthais --- src/bin/pg_upgrade/server.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/bin/pg_upgrade/server.c b/src/bin/pg_upgrade/server.c index 31b1425202..b17f348a5b 100644 --- a/src/bin/pg_upgrade/server.c +++ b/src/bin/pg_upgrade/server.c @@ -244,7 +244,7 @@ start_postmaster(ClusterInfo *cluster, bool report_and_exit_on_error) * vacuumdb --freeze actually freezes the tuples. */ snprintf(cmd, sizeof(cmd), - "\"%s/pg_ctl\" -w -l \"%s\" -D \"%s\" -o \"-p %d%s%s %s%s\" start", + "\"%s/pg_ctl\" -w -l \"%s\" -D \"%s\" -o \"-p %d%s%s %s%s -c default_transaction_read_only=on\" start", cluster->bindir, SERVER_LOG_FILE, cluster->pgconfig, cluster->port, (cluster->controldata.cat_ver >= BINARY_UPGRADE_SERVER_FLAG_CAT_VER) ? " -b" : -- 2.20.1