[dm-devel] [PATCH 04/11] multipath: do not print 'path is up' for removed paths

[Hannes Reinecke]

When a path is removed the previous checker message is still
kept in the checker context, and will be printed upon each
check. This causes multipath to print out
'path is up'
even though it already has been removed from sysfs.

Signed-off-by: Hannes Reinecke <hare at suse.de>
---
 multipathd/main.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/multipathd/main.c b/multipathd/main.c
index 91d7bfc..2633da9 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -1124,6 +1124,8 @@ check_path (struct vectors * vecs, struct path * pp)
 	newstate = path_offline(pp);
 	if (newstate == PATH_UP)
 		newstate = get_state(pp, 1);
+	else
+		checker_clear_message(&pp->checker);
 
 	if (newstate == PATH_WILD || newstate == PATH_UNCHECKED) {
 		condlog(2, "%s: unusable path", pp->dev);
@@ -1150,7 +1152,9 @@ check_path (struct vectors * vecs, struct path * pp)
 	if (newstate != pp->state) {
 		int oldstate = pp->state;
 		pp->state = newstate;
-		LOG_MSG(1, checker_message(&pp->checker));
+
+		if (strlen(checker_message(&pp->checker)))
+			LOG_MSG(1, checker_message(&pp->checker));
 
 		/*
 		 * upon state change, reset the checkint
@@ -1232,7 +1236,8 @@ check_path (struct vectors * vecs, struct path * pp)
 			pp->tick = pp->checkint;
 		}
 	}
-	else if (newstate == PATH_DOWN) {
+	else if (newstate == PATH_DOWN &&
+		 strlen(checker_message(&pp->checker))) {
 		if (conf->log_checker_err == LOG_CHKR_ERR_ONCE)
 			LOG_MSG(3, checker_message(&pp->checker));
 		else
-- 
1.8.1.4