[PATCH v3 04/20] multipath -u -i: respect entries in WWIDs file

From: Martin Wilck <mwilck@suse.com>
To: Christophe Varoqui <christophe.varoqui@opensvc.com>,
	Benjamin Marzinski <bmarzins@redhat.com>
Cc: Julian Andres Klode <julian.klode@canonical.com>,
	dm-devel@redhat.com, Martin Wilck <mwilck@suse.com>
Subject: [PATCH v3 04/20] multipath -u -i: respect entries in WWIDs file
Date: Mon,  2 Apr 2018 21:50:35 +0200	[thread overview]
Message-ID: <20180402195051.26854-5-mwilck@suse.com> (raw)
In-Reply-To: <20180402195051.26854-1-mwilck@suse.com>

Previously, if find_multipaths was set, devices listed in the WWIDs file
weren't classified as multipath members by "multipath -u -i" unless they also
met the "find_multipaths" criteria (at least two paths, or existing map with
this WWID). Now we classify all paths in the WWIDs file as multipath members, too.

The rationale for this patch is to match the logic that multipathd applies
by default (i.e. without "-n").

Reviewed-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
---
 multipath/main.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/multipath/main.c b/multipath/main.c
index 20f46ac..4d45df3 100644
--- a/multipath/main.c
+++ b/multipath/main.c
@@ -437,16 +437,19 @@ configure (struct config *conf, enum mpath_cmds cmd,
 		 * set, you need to actually check if there are two available
 		 * paths to determine if this path should be multipathed. To
 		 * do this, we put off the check until after discovering all
-		 * the paths */
-		if (cmd == CMD_VALID_PATH &&
-		    (!conf->find_multipaths || !conf->ignore_wwids)) {
-			if (conf->ignore_wwids ||
+		 * the paths.
+		 * Paths listed in the wwids file are always considered valid.
+		 */
+		if (cmd == CMD_VALID_PATH) {
+			if ((!conf->find_multipaths && conf->ignore_wwids) ||
 			    check_wwids_file(refwwid, 0) == 0)
 				r = 0;
-
-			printf("%s %s a valid multipath device path\n",
-			       devpath, r == 0 ? "is" : "is not");
-			goto out;
+			if (r == 0 ||
+			    !conf->find_multipaths || !conf->ignore_wwids) {
+				printf("%s %s a valid multipath device path\n",
+				       devpath, r == 0 ? "is" : "is not");
+				goto out;
+			}
 		}
 	}
 
-- 
2.16.1
