base/SOURCES/0327-multipath-add-hostonly-multipath.conf.patch

From 3d1bd59eb09780fe156bb24fc6709ce844f68052 Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Tue, 25 Aug 2015 13:49:10 +0200
Subject: [PATCH] multipath: add hostonly multipath.conf

Resolves: rhbz#994702
---
 modules.d/90multipath/module-setup.sh | 43 ++++++++++++++++++++++-----
 1 file changed, 35 insertions(+), 8 deletions(-)

diff --git a/modules.d/90multipath/module-setup.sh b/modules.d/90multipath/module-setup.sh
index acfc56f8..4971d18d 100755
--- a/modules.d/90multipath/module-setup.sh
+++ b/modules.d/90multipath/module-setup.sh
@@ -2,18 +2,29 @@
 # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
 # ex: ts=8 sw=4 sts=4 et filetype=sh
 
+is_mpath() {
+    local _dev=$1
+    [ -e /sys/dev/block/$_dev/dm/uuid ] || return 1
+    [[ $(cat /sys/dev/block/$_dev/dm/uuid) =~ mpath- ]] && return 0
+    return 1
+}
+
+majmin_to_mpath_dev() {
+    local _dev
+    for i in `ls -1 /dev/mapper/mpath*`; do
+        dev=$(get_maj_min $i)
+        if [ "$dev" = "$1" ]; then
+            echo $i
+            return
+        fi
+    done
+}
+
 check() {
     local _rootdev
     # if there's no multipath binary, no go.
     require_binaries multipath || return 1
 
-    is_mpath() {
-        local _dev=$1
-        [ -e /sys/dev/block/$_dev/dm/uuid ] || return 1
-        [[ $(cat /sys/dev/block/$_dev/dm/uuid) =~ mpath- ]] && return 0
-        return 1
-    }
-
     [[ $hostonly ]] || [[ $mount_needs ]] && {
         for_each_host_dev_and_slaves is_mpath || return 255
     }
@@ -68,7 +79,18 @@ installkernel() {
 }
 
 install() {
-    local _f
+    local _f _allow
+    add_hostonly_mpath_conf() {
+        is_mpath $1 && {
+            local _dev
+
+            _dev=$(majmin_to_mpath_dev $1)
+            [ -z "$_dev" ] && return
+            strstr "$_allow" "$_dev" && return
+            _allow="$_allow --allow $_dev"
+        }
+    }
+
     inst_multiple -o  \
         dmsetup \
         kpartx \
@@ -82,6 +104,11 @@ install() {
         /etc/multipath.conf \
         /etc/multipath/*
 
+    [[ $hostonly ]] && {
+        for_each_host_dev_and_slaves_all add_hostonly_mpath_conf
+        [ -n "$_allow" ] && mpathconf $_allow --outfile ${initdir}/etc/multipath.conf
+    }
+
     inst $(command -v partx) /sbin/partx
 
     inst_libdir_file "libmultipath*" "multipath/*"