From fc73bc5c242b721c9f161dcf21c24691c729e167 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Fri, 13 Jul 2007 08:47:02 +1000
Subject: [PATCH] added --nosetsched option to ctdbd (This used to be ctdb
 commit 4cbbb88c1735c7d112e751e22da1c1c69e09bf4a)

---
 ctdb/config/functions       | 1 +
 ctdb/include/ctdb_private.h | 1 +
 ctdb/server/ctdb_daemon.c   | 6 ++++--
 ctdb/server/ctdbd.c         | 4 ++++
 ctdb/server/eventscript.c   | 4 +++-
 5 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/ctdb/config/functions b/ctdb/config/functions
index 7ca7327ab69..d7818e0c469 100644
--- a/ctdb/config/functions
+++ b/ctdb/config/functions
@@ -43,6 +43,7 @@ ctdb_wait_command() {
   		echo "ctdb daemon has died. Exiting wait for $service_name"
 		exit 1
 	  }
+	  [ $all_ok -eq 1 ] || sleep 1
   done
   echo "`/bin/date` Local service $service_name is up"
 }
diff --git a/ctdb/include/ctdb_private.h b/ctdb/include/ctdb_private.h
index bd64f978eb6..b584794f1c9 100644
--- a/ctdb/include/ctdb_private.h
+++ b/ctdb/include/ctdb_private.h
@@ -307,6 +307,7 @@ struct ctdb_context {
 	struct ctdb_takeover takeover;
 	struct ctdb_tcp_list *tcp_list;
 	struct ctdb_client_ip *client_ip_list;
+	bool do_setsched;
 };
 
 struct ctdb_db_context {
diff --git a/ctdb/server/ctdb_daemon.c b/ctdb/server/ctdb_daemon.c
index 25779700750..ce84db3e685 100644
--- a/ctdb/server/ctdb_daemon.c
+++ b/ctdb/server/ctdb_daemon.c
@@ -644,8 +644,10 @@ int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork)
 	}
 	block_signal(SIGPIPE);
 
-	/* try to set us up as realtime */
-	ctdb_set_realtime(true);
+	if (ctdb->do_setsched) {
+		/* try to set us up as realtime */
+		ctdb_set_realtime(true);
+	}
 
 	/* ensure the socket is deleted on exit of the daemon */
 	domain_socket_name = talloc_strdup(talloc_autofree_context(), ctdb->daemon.name);
diff --git a/ctdb/server/ctdbd.c b/ctdb/server/ctdbd.c
index 2c4a23b6739..91e4d8f70b2 100644
--- a/ctdb/server/ctdbd.c
+++ b/ctdb/server/ctdbd.c
@@ -47,6 +47,7 @@ static struct {
 	const char *logfile;
 	const char *recovery_lock_file;
 	const char *db_dir;
+	int         no_setsched;
 } options = {
 	.nlist = ETCDIR "/ctdb/nodes",
 	.transport = "tcp",
@@ -108,6 +109,7 @@ int main(int argc, const char *argv[])
 		{ "transport", 0, POPT_ARG_STRING, &options.transport, 0, "protocol transport", NULL },
 		{ "dbdir", 0, POPT_ARG_STRING, &options.db_dir, 0, "directory for the tdb files", NULL },
 		{ "reclock", 0, POPT_ARG_STRING, &options.recovery_lock_file, 0, "location of recovery lock file", "filename" },
+		{ "nosetsched", 0, POPT_ARG_NONE, &options.no_setsched, 0, "disable setscheduler SCHED_FIFO call", NULL },
 		POPT_TABLEEND
 	};
 	int opt, ret;
@@ -224,6 +226,8 @@ int main(int argc, const char *argv[])
 		talloc_free(name);
 	}
 
+	ctdb->do_setsched = !!options.no_setsched;
+
 	/* start the protocol running (as a child) */
 	return ctdb_start_daemon(ctdb, interactive?False:True);
 }
diff --git a/ctdb/server/eventscript.c b/ctdb/server/eventscript.c
index e23157056c8..fab9175ed29 100644
--- a/ctdb/server/eventscript.c
+++ b/ctdb/server/eventscript.c
@@ -166,7 +166,9 @@ int ctdb_event_script_callback(struct ctdb_context *ctdb,
 
 	if (state->child == 0) {
 		close(state->fd[0]);
-		ctdb_set_realtime(false);
+		if (ctdb->do_setsched) {
+			ctdb_set_realtime(false);
+		}
 		set_close_on_exec(state->fd[1]);
 		va_start(ap, fmt);
 		ret = ctdb_event_script_v(ctdb, fmt, ap);
-- 
2.47.3