In ev_remove_path(), if update_mpp_paths() fails, we delete the entire
map. However, since update_mpp_paths() happens before we call
set_path_removed(), pp->initialized isn't set to INIT_REMOVED, so
remove_map_and_stop_waiter() doesn't remove the path when in removes the
map. But with the map removed, there's nothing to keep us from removing
the path.
Call set_path_removed() before update_mpp_paths() to avoid the odd case
of ev_remove_path() removing the map but not the path.
Signed-off-by: Benjamin Marzinski <bmarzins@xxxxxxxxxx>
Reviewed-by: Martin Wilck <mwilck@xxxxxxxx>
---
libmultipath/structs_vec.c | 4 ++--
multipathd/main.c | 13 ++++++++-----
2 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/libmultipath/structs_vec.c b/libmultipath/structs_vec.c
index d242c06b..75390198 100644
--- a/libmultipath/structs_vec.c
+++ b/libmultipath/structs_vec.c
@@ -45,8 +45,8 @@ int update_mpp_paths(struct multipath *mpp, vector pathvec)
/*
* Avoid adding removed paths to the map again
- * when we reload it. Such paths may exist if
- * domap fails in ev_remove_path().
+ * when we reload it. Such paths may exist in
+ * ev_remove_paths() or if it returns failure.
*/
pp1 = find_path_by_devt(pathvec, pp->dev_t);
if (pp1 && pp->initialized != INIT_REMOVED &&
diff --git a/multipathd/main.c b/multipathd/main.c
index 102946bf..449ce384 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -1199,6 +1199,13 @@ ev_remove_path (struct path *pp, struct vectors * vecs, int need_do_map)
* avoid referring to the map of an orphaned path
*/
if ((mpp = pp->mpp)) {
+ /*
+ * Mark the path as removed. In case of success, we
+ * will delete it for good. Otherwise, it will be deleted
+ * later, unless all attempts to reload this map fail.
+ */
+ set_path_removed(pp);
+
/*
* transform the mp->pg vector of vectors of paths
* into a mp->params string to feed the device-mapper
@@ -1210,13 +1217,9 @@ ev_remove_path (struct path *pp, struct vectors * vecs, int need_do_map)
}
/*
- * Mark the path as removed. In case of success, we
- * will delete it for good. Otherwise, it will be deleted
- * later, unless all attempts to reload this map fail.
- * Note: we have to explicitly remove pp from mpp->paths,
+ * we have to explicitly remove pp from mpp->paths,
* update_mpp_paths() doesn't do that.
*/
- set_path_removed(pp);
i = find_slot(mpp->paths, pp);
if (i != -1)
vector_del_slot(mpp->paths, i);
--
2.17.2
--
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