[PATCH 4/4] multipathd: don't resend change events for unknown devices

[Benjamin Marzinski <bmarzins@redhat.com>]

If multipath fails to get the wwid for a device, and the device is
of an unknown type (pp->bus == SYSFS_BUS_UNDEF), don't send change
events. Instead, assume that the device was not meant to be used
and skip it.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
 libmultipath/discovery.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
index 6aef188..10bd8cd 100644
--- a/libmultipath/discovery.c
+++ b/libmultipath/discovery.c
@@ -1966,6 +1966,8 @@ int pathinfo(struct path *pp, struct config *conf, int mask)
 	if ((mask & DI_WWID) && !strlen(pp->wwid)) {
 		get_uid(pp, path_state, pp->udev);
 		if (!strlen(pp->wwid)) {
+			if (pp->bus == SYSFS_BUS_UNDEF)
+				return PATHINFO_SKIPPED;
 			if (pp->initialized != INIT_FAILED) {
 				pp->initialized = INIT_MISSING_UDEV;
 				pp->tick = conf->retrigger_delay;
-- 
2.17.2