From: Martin Wilck <mwilck@xxxxxxxx>
If pathinfo fails for one path to be adopted, we currently
fail the entire function. This may cause ev_add_path() for a valid
path to fail because some other path is broken. Fix it by just
skipping paths that don't look healthy.
adopt_paths() may now succeed even if some paths couldn't be
added (e.g. because of pathinfo() failure). If this happens while we are
trying to add a specific path, we need to check after successful call to
adopt_paths() if that specific path had been actually added, and fail in the
caller otherwise.
Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
---
libmultipath/structs_vec.c | 17 +++++++++++------
multipathd/main.c | 3 ++-
2 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/libmultipath/structs_vec.c b/libmultipath/structs_vec.c
index b1f83c6..fb225f1 100644
--- a/libmultipath/structs_vec.c
+++ b/libmultipath/structs_vec.c
@@ -75,16 +75,20 @@ int adopt_paths(vector pathvec, struct multipath *mpp)
if (!mpp->paths && !(mpp->paths = vector_alloc()))
return 1;
- if (!find_path_by_devt(mpp->paths, pp->dev_t) &&
- store_path(mpp->paths, pp))
- return 1;
conf = get_multipath_config();
pthread_cleanup_push(put_multipath_config, conf);
ret = pathinfo(pp, conf,
DI_PRIO | DI_CHECKER);
pthread_cleanup_pop(1);
- if (ret)
- return 1;
+ if (ret) {
+ condlog(3, "%s: pathinfo failed for %s",
+ __func__, pp->dev);
+ continue;
+ }
+
+ if (!find_path_by_devt(mpp->paths, pp->dev_t) &&
+ store_path(mpp->paths, pp))
+ return 1;
}
}
return 0;
@@ -456,7 +460,8 @@ struct multipath *add_map_with_path(struct vectors *vecs, struct path *pp,
goto out;
mpp->size = pp->size;
- if (adopt_paths(vecs->pathvec, mpp))
+ if (adopt_paths(vecs->pathvec, mpp) ||
+ find_slot(vecs->pathvec, pp) == -1)
goto out;
if (add_vec) {
diff --git a/multipathd/main.c b/multipathd/main.c
index 61929a7..5902e7c 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -956,7 +956,8 @@ rescan:
if (mpp) {
condlog(4,"%s: adopting all paths for path %s",
mpp->alias, pp->dev);
- if (adopt_paths(vecs->pathvec, mpp))
+ if (adopt_paths(vecs->pathvec, mpp) ||
+ find_slot(vecs->pathvec, pp) == -1)
goto fail; /* leave path added to pathvec */
verify_paths(mpp, vecs);
--
2.28.0
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