[dm-devel] [PATCH 2/5] mpathpersist: fail commands when no usable paths exist

[Benjamin Marzinski]

"mpathpersist -oCK <reservation_key> <device>" will return success if it
is run on devices with no usable paths, but nothing is actually done.
The -L command will fail, but it should give up sooner, and with a more
helpful error message.

Signed-off-by: Benjamin Marzinski <bmarzins at redhat.com>
---
 libmpathpersist/mpath_persist.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/libmpathpersist/mpath_persist.c b/libmpathpersist/mpath_persist.c
index 190e9707..26710e79 100644
--- a/libmpathpersist/mpath_persist.c
+++ b/libmpathpersist/mpath_persist.c
@@ -604,7 +604,8 @@ int mpath_prout_common(struct multipath *mpp,int rq_servact, int rq_scope,
 			return ret ;
 		}
 	}
-	return MPATH_PR_SUCCESS;
+	condlog (0, "%s: no path available", mpp->wwid);
+	return MPATH_PR_DMMP_ERROR;
 }
 
 int send_prout_activepath(char * dev, int rq_servact, int rq_scope,
@@ -663,6 +664,11 @@ int mpath_prout_rel(struct multipath *mpp,int rq_servact, int rq_scope,
 
 	active_pathcount = count_active_paths(mpp);
 
+	if (active_pathcount == 0) {
+		condlog (0, "%s: no path available", mpp->wwid);
+		return MPATH_PR_DMMP_ERROR;
+	}
+
 	struct threadinfo thread[active_pathcount];
 	memset(thread, 0, sizeof(thread));
 	for (i = 0; i < active_pathcount; i++){
-- 
2.17.2