Paths that are already classified as DM_MULTIPATH_DEVICE_PATH don't
need to be retriggered. As an exception, trigger events for paths in
"maybe" state that are waiting to be updated.
---
libmultipath/configure.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/libmultipath/configure.c b/libmultipath/configure.c
index c08ea5b8decc..f8d1fa452014 100644
--- a/libmultipath/configure.c
+++ b/libmultipath/configure.c
@@ -447,8 +447,28 @@ 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")) {
+ /*
+ * Nonempty DM_MULTIPATH_SAVED_FS_TYPE means
+ * path is in "maybe" state and timer is running
+ * Send uevent now (see multipath.rules).
+ */
+ env = udev_device_get_property_value(
+ pp->udev, "DM_MULTIPATH_SAVED_FS_TYPE");
+ if (env == NULL)
+ continue;
+ }
+ condlog(4, "triggering change uevent for %s", pp->dev);
sysfs_attr_set_value(pp->udev, "uevent", "change",
strlen("change"));
}
--
2.15.1
--
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