From: Peter Jones <pjones@redhat.com>

Subject: [PATCH] Add a check file for multipath.

Date: 	Fri, 22 Jan 2010 10:56:40 -0500

If multipath isn't installed, don't use it.  If we're in hostonly mode,

only install the multipath module if it's used for / .  Otherwise, if

the user was dumb enough to install it, they get it during bootup.

---

 modules.d/90multipath/check |   27 +++++++++++++++++++++++++++

 1 files changed, 27 insertions(+), 0 deletions(-)

 create mode 100755 modules.d/90multipath/check

diff --git a/modules.d/90multipath/check b/modules.d/90multipath/check

new file mode 100755

index 0000000..d0cad4c

--- /dev/null

+++ b/modules.d/90multipath/check

@@ -0,0 +1,27 @@

+#!/bin/bash

+

+# if there's no multipath binary, no go.

+which multipath >/dev/null 2>&1 || exit 1

+

+[[ $1 = -d ]] && exit 0

+

+. $dracutfunctions

+[[ $debug ]] && set -x

+

+is_mpath() {

+    [ -e /sys/dev/block/$1/dm/uuid ] || return 1

+    [[ $(cat /sys/dev/block/$1/dm/uuid) =~ ^mpath- ]] && return 0

+    return 1

+}

+

+# If we're in hostonly mode, do mpath if we appear to be using it for /

+if [[ $1 = -h ]]; then

+    rootdev=$(find_root_block_device)

+    if [[ $rootdev ]]; then

+        check_block_and_slaves is_mpath "$rootdev" && exit 0

+    fi

+    exit 1

+fi

+

+# the user installed it, they get it...

+exit 0

-- 

1.6.5.2