[dm-devel] [PATCH v3 18/19] libmultipath: Don't blank intialized paths

[Benjamin Marzinski]

When pathinfo fails for some likely transient reason, it clears the path
wwid, but otherwise returns successfully, to keep the path around but
not usable until it gets fully initialized. However, if the path has
already been initialized, and pathinfo hits a transient error, it
shouldn't clear the wwid.

Signed-off-by: Benjamin Marzinski <bmarzins at redhat.com>
---
 libmultipath/discovery.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
index 3e0db7f..33815dc 100644
--- a/libmultipath/discovery.c
+++ b/libmultipath/discovery.c
@@ -1991,9 +1991,9 @@ blank:
 	/*
 	 * Recoverable error, for example faulty or offline path
 	 */
-	memset(pp->wwid, 0, WWID_SIZE);
 	pp->chkrstate = pp->state = PATH_DOWN;
-	pp->initialized = INIT_FAILED;
+	if (pp->initialized == INIT_FAILED)
+		memset(pp->wwid, 0, WWID_SIZE);
 
 	return PATHINFO_OK;
 }
-- 
2.7.4