File multipath-tools-ignore-map-offline-events of Package multipath-tools

tree 0ba1410678dc970dafa8f630ccbd2c19216259e6
parent 86131cf08118632fb632a6d596f384b1a128e673
author Hannes Reinecke <hare@suse.de> 1177055168 +0200
committer Hannes Reinecke <hare@suse.de> 1177055168 +0200

[multipathd] Ignore map offline events

'offline' events do not carry any useful information.
Plus there might be quite a few of them which can race with the
'remove' event.
So we're better ignore it.

Signed-off-by: Stefan Bader <bader@de.ibm.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
d7df5f6c1aa4b560638a62347abf56a212e32429
 multipathd/main.c |    9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/multipathd/main.c b/multipathd/main.c
index 1614f52..586a200 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -648,19 +648,18 @@ uev_trigger (struct uevent * uev, void *
 	lock(vecs->lock);
 
 	/*
-	 * Device map online/offline event.
+	 * Device map events.
 	 * Add/Remove events are ignored here as they
 	 * lead to races with device-mapper.
+	 * Offline events are ignored, too.
+	 * Device-mapper generated tons of them and
+	 * they don't carry additional information.
 	 */
 	if (!strncmp(devname, "dm-", 3)) {
 		if (!strncmp(uev->action, "online", 6)) {
 			r = uev_add_map(devname, vecs);
 			goto out;
 		}
-		if (!strncmp(uev->action, "offline", 7)) {
-			r = uev_remove_map(devname, vecs);
-			goto out;
-		}
 		if (!strncmp(uev->action, "remove", 6)) {
 			r = uev_remove_map(devname, vecs);
 			goto out;