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[Cluster-devel] Cluster Project branch, RHEL4, updated. gfs-kernel_2_6_9_76-23-g36e10fa



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- Log -----------------------------------------------------------------
commit 36e10fa435afc59e5a0e658c1b9b7ee2c34f184a
Author: Jonathan Brassow <jbrassow redhat com>
Date:   Wed Apr 2 14:25:22 2008 -0500

    rgmanager/lvm.sh:  Make lvm.sh call into lvm_by_*.sh (RE: bz427377)
    
    lvm_by_*.sh scripts are updated.  Now call them.  This makes
    lvm.sh a wrapper around lvm_by_*.sh scripts

commit a0e32d4eea87f15b2e07c8f61ecd53bd2462e73f
Author: Jonathan Brassow <jbrassow redhat com>
Date:   Wed Apr 2 14:19:02 2008 -0500

    rgmanager/lvm.sh:  Updated fix for bz242798
    
    When fixing bug Bug 427377 (allow multiple LVs / VG),
    I failed to commit the changes to lvm.sh - which
    effectively just became a shell that called functions
    in other files.
    
    Now, I need to update the other files with recent bug
    fixes and then make the change that was necessary for
    bug 427377 - removing the functional contents of lvm.sh.

-----------------------------------------------------------------------

Summary of changes:
 rgmanager/src/resources/lvm.metadata |   16 +-
 rgmanager/src/resources/lvm.sh       |  500 ++++------------------------------
 rgmanager/src/resources/lvm_by_lv.sh |   15 +-
 rgmanager/src/resources/lvm_by_vg.sh |   17 +-
 4 files changed, 94 insertions(+), 454 deletions(-)

diff --git a/rgmanager/src/resources/lvm.metadata b/rgmanager/src/resources/lvm.metadata
index 61a740b..650675b 100755
--- a/rgmanager/src/resources/lvm.metadata
+++ b/rgmanager/src/resources/lvm.metadata
@@ -42,14 +42,14 @@
 	</parameter>
 
 	<parameter name="self_fence">
-            <longdesc lang="en">
-                If set and the clean up of the tags fails, the node will
-                immediately reboot.
-            </longdesc>
-            	<shortdesc lang="en">
-                Fence the node if it is not able to clean up LVM tags
-            </shortdesc>
-            <content type="boolean"/>
+	    <longdesc lang="en">
+		If set and the clean up of the tags fails, the node will
+		immediately reboot.
+	    </longdesc>
+	    <shortdesc lang="en">
+		Fence the node if it is not able to clean up LVM tags
+	    </shortdesc>
+	    <content type="boolean"/>
 	</parameter>
 
 	<parameter name="nfslock" inherit="service%nfslock">
diff --git a/rgmanager/src/resources/lvm.sh b/rgmanager/src/resources/lvm.sh
index f45e50d..82f3383 100755
--- a/rgmanager/src/resources/lvm.sh
+++ b/rgmanager/src/resources/lvm.sh
@@ -21,19 +21,7 @@
 
 #
 # LVM Failover Script.
-#
-# This script correctly handles:
-#  - Relocation
-#  - Fail-over
-#  - Disk failure + Fail-over
-# If you don't know what those mean, ASK!  (jbrassow redhat com)
 # NOTE: Changes to /etc/lvm/lvm.conf are required for proper operation.
-#
-# This script should handle (but doesn't right now):
-#  - Operations on VG level.  Make lv_name optional.  This would have
-#    the effect of moving all LVs in a VG, not just one LV
-
-
 
 LC_ALL=C
 LANG=C
@@ -42,466 +30,82 @@ export LC_ALL LANG PATH
 
 . $(dirname $0)/ocf-shellfuncs
 . $(dirname $0)/utils/member_util.sh
+. $(dirname $0)/lvm_by_lv.sh
+. $(dirname $0)/lvm_by_vg.sh
 
 rv=0
 
-meta_data()
-{
-	cat <<EOT
-<?xml version="1.0" ?>
-<resource-agent name="lvm" version="rgmanager 2.0">
-    <version>1.0</version>
-
-    <longdesc lang="en">
-	This defines a LVM volume group that is ...
-    </longdesc>
-
-    <shortdesc lang="en">
-	LVM Failover script
-    </shortdesc>
-
-    <parameters>
-        <parameter name="name" primary="1">
-            <longdesc lang="en">
-                Descriptive name LVM Volume group
-            </longdesc>
-            <shortdesc lang="en">
-                Name
-            </shortdesc>
-	    <content type="string"/>
-        </parameter>
-
-        <parameter name="vg_name" required="1">
-            <longdesc lang="en">
-                If you can see this, your GUI is broken.
-            </longdesc>
-            <shortdesc lang="en">
-                If you can see this, your GUI is broken.
-            </shortdesc>
-	    <content type="string"/>
-        </parameter>
-
-        <parameter name="lv_name" required="1">
-            <longdesc lang="en">
-                If you can see this, your GUI is broken.
-            </longdesc>
-            <shortdesc lang="en">
-                If you can see this, your GUI is broken.
-            </shortdesc>
-	    <content type="string"/>
-        </parameter>
-
-	<parameter name="nfslock" inherit="service%nfslock">
-	    <longdesc lang="en">
-	        If set and unmounting the file system fails, the node will
-		try to kill lockd and issue reclaims across all remaining
-		network interface cards.
-	    </longdesc>
-	    <shortdesc lang="en">
-	        Enable NFS lock workarounds
-	    </shortdesc>
-	    <content type="boolean"/>
-	</parameter>
-
-    </parameters>
-
-    <actions>
-        <action name="start" timeout="5"/>
-	<action name="stop" timeout="5"/>
-
-	<action name="status" timeout="5" interval="1h"/>
-	<action name="monitor" timeout="5" interval="1h"/>
-
-	<action name="meta-data" timeout="5"/>
-	<action name="verify-all" timeout="30"/>
-    </actions>
-
-    <special tag="rgmanager">
-    	<attributes maxinstances="1"/>
-    </special>
-
-</resource-agent>
-EOT
-}
-
-# verify_all
-#
-# Verify the parameters passed in
+################################################################################
+# clvm_check
 #
-verify_all()
-{
-	declare lv_path="$OCF_RESKEY_vg_name/$OCF_RESKEY_lv_name"
-	declare -i ret=0
-
-	# Anything to verify?  Perhaps the names?
-	ocf_log notice "Verifying $lv_path"
-
-	return $ret
-}
-
-vg_status()
-{
-	return $OCF_ERR_GENERIC
-}
-
-vg_activate()
+################################################################################
+function clvm_check
 {
-	return $OCF_ERR_GENERIC
-}
-
-# lvm_exec_resilient
-#
-# Sometimes, devices can come back.  Their metadata will conflict
-# with the good devices that remain.  This function filters out those
-# failed devices when executing the given command
-#
-# Finishing with vgscan resets the cache/filter
-lvm_exec_resilient()
-{
-	declare command=$1
-	declare all_pvs
-
-	ocf_log notice "Making resilient : $command"
-
-	if [ -z $command ]; then
-		ocf_log err "lvm_exec_resilient: Arguments not supplied"
-		return $OCF_ERR_ARGS
+	if [[ $(vgs -o attr --noheadings $1) =~ .....c ]]; then
+		return 1
 	fi
 
-	# pvs will print out only those devices that are valid
-	# If a device dies and comes back, it will not appear
-	# in pvs output (but you will get a Warning).
-	all_pvs=(`pvs --noheadings -o pv_name | grep -v Warning`)
-
-	# Now we use those valid devices in a filter which we set up.
-	# The device will then be activated because there are no
-	# metadata conflicts.
-        command=$command" --config devices{filter=[";
-	for i in ${all_pvs[*]}; do
-		command=$command'"a|'$i'|",'
-	done
-	command=$command"\"r|.*|\"]}"
-
-	ocf_log notice "Resilient command: $command"
-	if ! $command ; then
-		ocf_log err "lvm_exec_resilient failed"
-		vgscan
-		return $OCF_ERR_GENERIC
-	else
-		vgscan
-		return $OCF_SUCCESS
-	fi
+	return 0
 }
 
-# lv_activate_resilient
+################################################################################
+# ha_lvm_proper_setup_check
 #
-# Sometimes, devices can come back.  Their metadata will conflict
-# with the good devices that remain.  We must filter out those
-# failed devices when trying to reactivate
-lv_activate_resilient()
+################################################################################
+function ha_lvm_proper_setup_check
 {
-	declare action=$1
-	declare lv_path=$2
-	declare op="-ay"
-
-	if [ -z $action ] || [ -z $lv_path ]; then
-		ocf_log err "lv_activate_resilient: Arguments not supplied"
-		return $OCF_ERR_ARGS
-	fi
-
-	if [ $action != "start" ]; then
-	        op="-an"
-	fi
-
-	if ! lvm_exec_resilient "lvchange $op $lv_path" ; then
-		ocf_log err "lv_activate_resilient $action failed on $lv_path"
-		return $OCF_ERR_GENERIC
-	else
-		return $OCF_SUCCESS
-	fi
-}
-
-# lv_status
-#
-# Is the LV active?
-lv_status()
-{
-	declare lv_path="$OCF_RESKEY_vg_name/$OCF_RESKEY_lv_name"
-	declare dev="/dev/$lv_path"
-	declare realdev
-	declare owner
-	declare my_name
-
-	#
-	# Check if device is active
-	#
-	if [[ ! $(lvs -o attr --noheadings $lv_path) =~ ....a. ]]; then
-		return $OCF_ERR_GENERIC
-	fi
-
-	if [[ $(vgs -o attr --noheadings $OCF_RESKEY_vg_name) =~ .....c ]]; then
-		ocf_log notice "$OCF_RESKEY_vg_name is a cluster volume.  Ignoring..."
-		return $OCF_SUCCESS
-	fi
-
-	#
-	# Check if all links/device nodes are present
-	#
-        if [ -h "$dev" ]; then
-		realdev=$(readlink -f $dev)
-		if [ $? -ne 0 ]; then
-			ocf_log err "Failed to follow link, $dev"
-			return $OCF_ERR_ARGS
-		fi
-
-		if [ ! -b $realdev ]; then
-			ocf_log err "Device node for $lv_path is not present"
-			return $OCF_ERR_GENERIC
-		fi
-	else
-	        ocf_log err "Symbolic link for $lv_path is not present"
-		return $OCF_ERR_GENERIC
-	fi
-
-	#
-	# Verify that we are the correct owner
-	#
-	owner=`lvs -o tags --noheadings $lv_path`
-	my_name=$(local_node_name)
-	if [ -z $my_name ]; then
-		ocf_log err "Unable to determine local machine name"
-
-		# FIXME: I don't really want to fail on 1st offense
-		return $OCF_SUCCESS
-	fi
-
-	if [ -z $owner ] || [ $my_name != $owner ]; then
-		ocf_log err "WARNING: $lv_path should not be active"
-		ocf_log err "WARNING: $my_name does not own $lv_path"
-		ocf_log err "WARNING: Attempting shutdown of $lv_path"
-
-		lv_activate_resilient "stop" $lv_path
-		return $OCF_ERR_GENERIC
-	fi
-
-	return $OCF_SUCCESS
-}
-
-# lv_activate_and_tag
-lv_activate_and_tag()
-{
-	declare action=$1
-	declare tag=$2
-	declare lv_path=$3
-	typeset self_fence=""
-
-	case ${OCF_RESKEY_self_fence} in
-		"yes")          self_fence=1 ;;
-		1)              self_fence=1 ;;
-		*)              self_fence="" ;;
-	esac
-
-	if [ -z $action ] || [ -z $tag ] || [ -z $lv_path ]; then
-		ocf_log err "Supplied args: 1) $action, 2) $tag, 3) $lv_path"
-		return $OCF_ERR_ARGS
-	fi
-
-	if [ $action == "start" ]; then
-		ocf_log notice "Activating $lv_path"
-		lvchange --addtag $tag $lv_path
-		if [ $? -ne 0 ]; then
-			ocf_log err "Unable to add tag to $lv_path"
-			return $OCF_ERR_GENERIC
-		fi
-
-		if ! lv_activate_resilient $action $lv_path; then
-			ocf_log err "Unable to activate $lv_path"
-			return $OCF_ERR_GENERIC
-		fi
-	else
-		ocf_log notice "Deactivating $lv_path"
-		if ! lv_activate_resilient $action $lv_path; then
-			if [ "$self_fence" ]; then
-				ocf_log err "Unable to deactivate $lv_path REBOOT"
-				sync
-				reboot -fn
-			else
-				ocf_log err "Unable to deactivate $lv_path"
-			fi
-
-			ocf_log err "Unable to deactivate $lv_path"
-			return $OCF_ERR_GENERIC
-		fi
-
-		ocf_log notice "Removing ownership tag ($tag) from $lv_path"
-
-		lvchange --deltag $tag $lv_path
-		if [ $? -ne 0 ]; then
-			ocf_log err "Unable to delete tag from $lv_path"
-			return $OCF_ERR_GENERIC
-		fi
-	fi
-
-	return $OCF_SUCCESS
-}
-
-# lv_activate
-# $1: start/stop only
-#
-# Basically, if we want to [de]activate an LVM volume,
-# we must own it.  That means that our tag must be on it.
-# This requires a change to /etc/lvm/lvm.conf:
-#	volume_list = [ "root_volume", "@my_hostname" ]
-# where "root_volume" is your root volume group and
-# "my_hostname" is $(local_node_name)
-#
-# If there is a node failure, we may wish to "steal" the
-# LV.  For that, we need to check if the node that owns
-# it is still part of the cluster.  We use the tag to
-# determine who owns the volume then query for their
-# liveness.  If they are dead, we can steal.
-lv_activate()
-{
-	declare lv_path="$OCF_RESKEY_vg_name/$OCF_RESKEY_lv_name"
-	declare owner=`lvs -o tags --noheadings $lv_path`
-	declare my_name=$(local_node_name)
-
-	if [ -z $my_name ]; then
-		ocf_log err "Unable to determine cluster node name"
-		return $OCF_ERR_GENERIC
-	fi
-
-	#
-	# FIXME: This code block is repeated below... might be
-	# nice to put it in a function
-	#
-	if [ ! -z $owner ] && [ $owner != $my_name ]; then
-		if is_node_member_clustat $owner ; then
-			ocf_log err "$owner owns $lv_path unable to $1"
-			return $OCF_ERR_GENERIC
-		fi
-		ocf_log notice "Owner of $lv_path is not in the cluster"
-		ocf_log notice "Stealing $lv_path"
-
-		lvchange --deltag $owner $lv_path
-		if [ $? -ne 0 ]; then
-			ocf_log err "Failed to steal $lv_path from $owner"
-			return $OCF_ERR_GENERIC
-		fi
-
-		# Warning --deltag doesn't always result in failure
-		if [ ! -z `lvs -o tags --noheadings $lv_path` ]; then
-			ocf_log err "Failed to steal $lv_path from $owner."
-			return $OCF_ERR_GENERIC
-		fi
-	fi
-
-	if ! lv_activate_and_tag $1 $my_name $lv_path; then
-		ocf_log err "Failed to $1 $lv_path"
-
-		if [ "$1" == "start" ]; then
-			ocf_log notice "Attempting cleanup of $OCF_RESKEY_vg_name"
-
-			if vgreduce --removemissing --config \
-			    "activation { volume_list = \"$OCF_RESKEY_vg_name\" }" \
-			    $OCF_RESKEY_vg_name; then
-				ocf_log notice "$OCF_RESKEY_vg_name now consistent"
-				owner=`lvs -o tags --noheadings $lv_path`
-				if [ ! -z $owner ] && [ $owner != $my_name ]; then
-					if is_node_member_clustat $owner ; then
-						ocf_log err "$owner owns $lv_path unable to $1"
-						return $OCF_ERR_GENERIC
-					fi
-					ocf_log notice "Owner of $lv_path is not in the cluster"
-					ocf_log notice "Stealing $lv_path"
-
-					lvchange --deltag $owner $lv_path
-					if [ $? -ne 0 ]; then
-						ocf_log err "Failed to steal $lv_path from $owner"
-						return $OCF_ERR_GENERIC
-					fi
-
-					# Warning --deltag doesn't always result in failure
-					if [ ! -z `lvs -o tags --noheadings $lv_path` ]; then
-						ocf_log err "Failed to steal $lv_path from $owner."
-						return $OCF_ERR_GENERIC
-					fi
-				fi
-
-				if ! lv_activate_and_tag $1 $my_name $lv_path; then
-					ocf_log err "Failed second attempt to $1 $lv_path"
-					return $OCF_ERR_GENERIC
-				else
-					ocf_log notice "Second attempt to $1 $lv_path successful"
-					return $OCF_SUCCESS
-				fi
-			else
-				ocf_log err "Failed to make $OCF_RESKEY_vg_name consistent"
-				return $OCF_ERR_GENERIC
-			fi
-		else
-			ocf_log err "Failed to $1 $lv_path"
-			return $OCF_ERR_GENERIC
-		fi
-	fi
-	return $OCF_SUCCESS
-}
-
-ha_lvm_proper_setup_check()
-{
-	# First, let's check that they have setup their lvm.conf correctly
+	##
+	# Machine's cluster node name must be present as
+	# a tag in lvm.conf:activation/volume_list
+	##
 	if ! lvm dumpconfig activation/volume_list >& /dev/null ||
 	   ! lvm dumpconfig activation/volume_list | grep $(local_node_name); then
 		ocf_log err "lvm.conf improperly configured for HA LVM."
 		return $OCF_ERR_GENERIC
 	fi
 
+	##
 	# Next, we need to ensure that their initrd has been updated
-	if [ -e /boot/initrd-`uname -r`.img ]; then
-		if [ "$(find /boot/initrd-`uname -r`.img -newer /etc/lvm/lvm.conf)" == "" ]; then
-			ocf_log err "HA LVM requires the initrd image to be newer than lvm.conf"
-			return $OCF_ERR_GENERIC
-		fi
-	else
-		# Best guess...
-		if [ "$(find /boot/*.img -newer /etc/lvm/lvm.conf)" == "" ]; then
-			ocf_log err "HA LVM requires the initrd image to be newer than lvm.conf"
-			return $OCF_ERR_GENERIC
-		fi
+	# If not, the machine could boot and activate the VG outside
+	# the control of rgmanager
+	##
+	# Fixme: we might be able to perform a better check...
+	if [ "$(find /boot/*.img -newer /etc/lvm/lvm.conf)" == "" ]; then
+		ocf_log err "HA LVM requires the initrd image to be newer than lvm.conf"
+		return $OCF_ERR_GENERIC
 	fi
 
 	return $OCF_SUCCESS
 }
 
+################################################################################
+# MAIN
+################################################################################
+
 case $1 in
 start)
-	if [[ $(vgs -o attr --noheadings $OCF_RESKEY_vg_name) =~ .....c ]]; then
+	##
+	# We can safely ignore clustered volume groups (VGs handled by CLVM)
+	##
+	if ! clvm_check $OCF_RESKEY_vg_name; then
 		ocf_log notice "$OCF_RESKEY_vg_name is a cluster volume.  Ignoring..."
 		exit 0
 	fi
 
-	if ! lvs $OCF_RESKEY_vg_name >& /dev/null; then
-		lv_count=0
-	else
-		lv_count=`lvs --noheadings -o name $OCF_RESKEY_vg_name | grep -v _mlog | grep -v _mimage | grep -v nconsistent | wc -l`
-	fi
-	if [ $lv_count -gt 1 ]; then
-		ocf_log err "HA LVM requires Only one logical volume per volume group."
-		ocf_log err "There are currently $lv_count logical volumes in $OCF_RESKEY_vg_name"
-		ocf_log err "Failing HA LVM start of $OCF_RESKEY_vg_name/$OCF_RESKEY_lv_name"
-		exit $OCF_ERR_GENERIC
-	fi
 	ha_lvm_proper_setup_check || exit 1
-		
+
+	rv=0
+
 	if [ -z $OCF_RESKEY_lv_name ]; then
-		vg_activate start || exit 1
+		vg_start || exit 1
 	else
-		lv_activate start || exit 1
+		lv_start || exit 1
 	fi
-	rv=0
 	;;
 
 status|monitor)
+	ocf_log notice "Getting status"
+
 	if [ -z $OCF_RESKEY_lv_name ]; then
 		vg_status || exit 1
 	else
@@ -511,7 +115,10 @@ status|monitor)
 	;;
 		    
 stop)
-	if [[ $(vgs -o attr --noheadings $OCF_RESKEY_vg_name) =~ .....c ]]; then
+	##
+	# We can safely ignore clustered volume groups (VGs handled by CLVM)
+	##
+	if ! clvm_check $OCF_RESKEY_vg_name; then
 		ocf_log notice "$OCF_RESKEY_vg_name is a cluster volume.  Ignoring..."
 		exit 0
 	fi
@@ -521,9 +128,9 @@ stop)
 	fi
 
 	if [ -z $OCF_RESKEY_lv_name ]; then
-		vg_activate stop || exit 1
+		vg_stop || exit 1
 	else
-		lv_activate stop || exit 1
+		lv_stop || exit 1
 	fi
 	rv=0
 	;;
@@ -535,18 +142,25 @@ recover|restart)
 	;;
 
 meta-data)
-	meta_data
+	cat `echo $0 | sed 's/^\(.*\)\.sh$/\1.metadata/'`
 	rv=0
 	;;
 
 verify-all)
-	if [[ $(vgs -o attr --noheadings $OCF_RESKEY_vg_name) =~ .....c ]]; then
+	##
+	# We can safely ignore clustered volume groups (VGs handled by CLVM)
+	##
+	if ! clvm_check $OCF_RESKEY_vg_name; then
 		ocf_log notice "$OCF_RESKEY_vg_name is a cluster volume.  Ignoring..."
 		exit 0
 	fi
 
-	verify_all
-	rv=$?
+	if [ -z $OCF_RESKEY_lv_name ]; then
+		vg_verify || exit 1
+	else
+		lv_verify || exit 1
+	fi
+	rv=0
 	;;
 *)
 	echo "usage: $0 {start|status|monitor|stop|restart|meta-data|verify-all}"
diff --git a/rgmanager/src/resources/lvm_by_lv.sh b/rgmanager/src/resources/lvm_by_lv.sh
index e14540f..6691181 100644
--- a/rgmanager/src/resources/lvm_by_lv.sh
+++ b/rgmanager/src/resources/lvm_by_lv.sh
@@ -173,6 +173,13 @@ lv_activate_and_tag()
 	declare action=$1
 	declare tag=$2
 	declare lv_path=$3
+	typeset self_fence=""
+
+	case ${OCF_RESKEY_self_fence} in
+		"yes")          self_fence=1 ;;
+		1)              self_fence=1 ;;
+		*)              self_fence="" ;;
+	esac
 
 	if [ -z $action ] || [ -z $tag ] || [ -z $lv_path ]; then
 		ocf_log err "Supplied args: 1) $action, 2) $tag, 3) $lv_path"
@@ -194,7 +201,13 @@ lv_activate_and_tag()
 	else
 		ocf_log notice "Deactivating $lv_path"
 		if ! lv_activate_resilient $action $lv_path; then
-			ocf_log err "Unable to deactivate $lv_path"
+			if [ "$self_fence" ]; then
+				ocf_log err "Unable to deactivate $lv_path: REBOOTING"
+				sync
+				reboot -fn
+			else
+				ocf_log err "Unable to deactivate $lv_path"
+			fi
 			return $OCF_ERR_GENERIC
 		fi
 
diff --git a/rgmanager/src/resources/lvm_by_vg.sh b/rgmanager/src/resources/lvm_by_vg.sh
index b1840a1..8fa36d6 100755
--- a/rgmanager/src/resources/lvm_by_vg.sh
+++ b/rgmanager/src/resources/lvm_by_vg.sh
@@ -242,17 +242,30 @@ function vg_stop
 {
 	local a
 	local results
+	typeset self_fence=""
+
+	case ${OCF_RESKEY_self_fence} in
+		"yes")          self_fence=1 ;;
+		1)              self_fence=1 ;;
+		*)              self_fence="" ;;
+	esac
 
 	#  Shut down the volume group
 	#  Do we need to make this resilient?
 	vgchange -an $OCF_RESKEY_vg_name
 
 	#  Make sure all the logical volumes are inactive
-	results=(`lvs -o name,attr --noheadings 2> /dev/null $OCF_RESKEY_vg_name`)
+	results=(`lvs -o name,attr --noheadings $OCF_RESKEY_vg_name 2> /dev/null`)
 	a=0
 	while [ ! -z ${results[$a]} ]; do
 		if [[ ${results[$(($a + 1))]} =~ ....a. ]]; then
-			ocf_log err "Logical volume $OCF_RESKEY_vg_name/${results[$a]} failed to shutdown"
+			if [ "$self_fence" ]; then
+				ocf_log err "Unable to deactivate $lv_path REBOOT"
+				sync
+				reboot -fn
+			else
+				ocf_log err "Logical volume $OCF_RESKEY_vg_name/${results[$a]} failed to shutdown"
+			fi
 			return $OCF_ERR_GENERIC
 		fi
 		a=$(($a + 2))


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