File 0021-multipath-fix-majmin_to_mpath_dev.patch of Package dracut

From 9007772e67cd9e7a0311742755e08df0697ce56e Mon Sep 17 00:00:00 2001
From: Pekka Wallendahl <wyrmiyu@gmail.com>
Date: Mon, 18 Jan 2016 20:28:22 +0200
Subject: [PATCH] multipath: fix majmin_to_mpath_dev()

* Multipath device names only start with the mpath-prefix if the option
  use_userfriendly_names is set true in /etc/multipath.conf and if user
  has not set any aliases in the said file. Thus the for-loop should go
  through all files in /dev/mapper/, not just ones starting with 'mpath'

* Bash is perfectly capable to extend `/dev/mapper/*` notation without a
  need to pass it to an external ls

* Changed the function to use a local variable $_dev instead of the
  global $dev, which seemed to be the original intention as the local
  _dev was defined but not used
---
 modules.d/90multipath/module-setup.sh | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/modules.d/90multipath/module-setup.sh b/modules.d/90multipath/module-setup.sh
index 831c99ff..a8086788 100755
--- a/modules.d/90multipath/module-setup.sh
+++ b/modules.d/90multipath/module-setup.sh
@@ -9,9 +9,10 @@ is_mpath() {
 
 majmin_to_mpath_dev() {
     local _dev
-    for i in `ls -1 /dev/mapper/mpath*`; do
-        dev=$(get_maj_min $i)
-        if [ "$dev" = "$1" ]; then
+    for i in /dev/mapper/*; do
+        [[ $i == /dev/mapper/control ]] && continue
+        _dev=$(get_maj_min $i)
+        if [ "$_dev" = "$1" ]; then
             echo $i
             return
         fi