Paths that are already classified as DM_MULTIPATH_DEVICE_PATH don't
need to be retriggered.

Reviewed-by: Benjamin Marzinski <bmarz...@redhat.com>
Signed-off-by: Martin Wilck <mwi...@suse.com>
---
 libmultipath/configure.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/libmultipath/configure.c b/libmultipath/configure.c
index c56e972f..2cae9240 100644
--- a/libmultipath/configure.c
+++ b/libmultipath/configure.c
@@ -458,8 +458,20 @@ trigger_paths_udev_change(const struct multipath *mpp)
                if (!pgp->paths)
                        continue;
                vector_foreach_slot(pgp->paths, pp, j) {
+                       const char *env;
+
                        if (!pp->udev)
                                continue;
+                       /*
+                        * Paths that are already classified as multipath
+                        * members don't need another uevent.
+                        */
+                       env = udev_device_get_property_value(
+                               pp->udev, "DM_MULTIPATH_DEVICE_PATH");
+                       if (env != NULL && !strcmp(env, "1"))
+                               continue;
+
+                       condlog(4, "triggering change uevent for %s", pp->dev);
                        sysfs_attr_set_value(pp->udev, "uevent", "change",
                                             strlen("change"));
                }
-- 
2.16.1

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