This patch modifies the redhat init script, so that it doesn't allow
multipathd to be stopped when the root device is on it.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
:100644 100644 ee776f0... e46b1b8... M multipathd/multipathd.init.redhat
multipathd/multipathd.init.redhat | 38 +++++++++++++++++++++++++++++++++++++-
1 file changed, 37 insertions(+), 1 deletion(-)

Index: multipath-tools-100322/multipathd/multipathd.init.redhat
================================================== =================
--- multipath-tools-100322.orig/multipathd/multipathd.init.redhat
+++ multipath-tools-100322/multipathd/multipathd.init.redhat
@@ -2,7 +2,7 @@
#
# multipathd Starts the multipath daemon
#
-# chkconfig: - 13 87
+# chkconfig: - 06 87
# description: Manages device-mapper multipath devices

### BEGIN INIT INFO
@@ -17,6 +17,7 @@ prog=`basename $DAEMON`
initdir=/etc/rc.d/init.d
lockdir=/var/lock/subsys
sysconfig=/etc/sysconfig
+syspath=/sys/block


. $initdir/functions
@@ -25,6 +26,36 @@ test -r $sysconfig/$prog && . $sysconfig

RETVAL=0

+teardown_slaves()
+{
+pushd $1 > /dev/null
+if [ -d "slaves" ]; then
+for slave in slaves/*;
+do
+ if [ "$slave" = "slaves/*" ]; then
+ read dev < $1/dev
+ tablename=`dmsetup table --target multipath | sed -n "s/(.*): .* $dev .*/1/p"`
+ if ! [ -z $tablename ]; then
+ echo "Root is on a multipathed device, multipathd can not be stopped"
+ exit 1
+ fi
+ else
+ local_slave=`readlink -f $slave`;
+ teardown_slaves $local_slave;
+ fi
+ done
+
+else
+ read dev < $1/dev
+ tablename=`dmsetup table --target multipath | sed -n "s/(.*): .* $dev .*/1/p"`
+ if ! [ -z $tablename ]; then
+ echo "Root is on a multipathed device, multipathd can not be stopped"
+ exit 1
+ fi
+fi
+popd > /dev/null
+}
+
#
# See how we were called.
#
@@ -39,6 +70,11 @@ start() {
}

stop() {
+ root_dev=$(awk '{ if ($1 !~ /^[ ]*#/ && $2 == "/") { print $1; }}' /etc/mtab)
+ dm_num=`dmsetup info -c --noheadings -o minor $root_dev`
+ root_dm_device="dm-$dm_num"
+ [ -d $syspath/$root_dm_device ] && teardown_slaves $syspath/$root_dm_device
+
echo -n $"Stopping $prog daemon: "
killproc $DAEMON
RETVAL=$?

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