[dm-devel] [PATCH v2 04/21] multipathd: send "RELOADING=1" to systemd on DAEMON_CONFIGURE state

[mwilck at suse.com]

From: Martin Wilck <mwilck at suse.com>

The logic is as follows: child() sets DAEMON_IDLE status after
DAEMON_CONFIGURE when reconfigure() has finished. The only other state change
that can race with that is DAEMON_SHUTDOWN. Other state changes will wait for
DAEMON_IDLE first (see set_config_state()). When DAEMON_CONFIGURE is entered,
and we are not just starting up, send a "RELOADING=1" message to
systemd. After that, we must send "READY=1" when we're done reloading. Also
do that on startup, when DAEMON_IDLE is set for the first time.
See sd_notify(3).

Reviewed-by: Benjamin Marzinski <bmarzins at redhat.com>
Signed-off-by: Martin Wilck <mwilck at suse.com>
---
 multipathd/main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/multipathd/main.c b/multipathd/main.c
index c264351..e3f2328 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -210,10 +210,11 @@ static void do_sd_notify(enum daemon_status old_state,
 
 	if (new_state == DAEMON_SHUTDOWN)
 		sd_notify(0, "STOPPING=1");
-	else if (new_state == DAEMON_IDLE && !startup_done) {
+	else if (new_state == DAEMON_IDLE && old_state == DAEMON_CONFIGURE) {
 		sd_notify(0, "READY=1");
 		startup_done = true;
-	}
+	} else if (new_state == DAEMON_CONFIGURE && startup_done)
+		sd_notify(0, "RELOADING=1");
 }
 #endif
 
-- 
2.28.0