[patch] initrd proposed patch

xendomains.initd-r2_20141120.patch (text/plain), 5.12 KB, created by Daniele Palumbo on 2014-11-20 16:31:45 UTC

--- a/xen-tools/files/xendomains.initd-r2	2014-06-15 22:01:05.000000000 +0200
+++ b/xen-tools/files/xendomains.initd-r2	2014-02-06 00:03:47.225637919 +0100
@@ -11,7 +11,7 @@
 }
 
 get_domname() {
-	local name_from_file=$(sed -rn 's/^name\W*=\W*\"?([[:alnum:]_\.-]+)\"?\W*;?/\1/p' "${1}" | tail -n 1)
+	local name_from_file=$(sed -rn 's/^name\W*=\W*\"?([[:alnum:]_\.-]+)\"?\W*;?/\1/p' "${1}" 2>/dev/null | tail -n 1)
 
 	if [ -z ${name_from_file} ] ; then
 		basename "${1}"
@@ -24,12 +24,30 @@
 	/usr/sbin/xl list "${1}" >/dev/null 2>&1
 }
 
+domains_running() {
+	if [[ "`jobs -l|wc -l`" -eq "0" ]] ; then
+		return 1
+	else
+		return 0
+	fi
+
+}
+
 using_screen() {
 	[ "${SCREEN}" = "yes" -o "${SCREEN}" = "YES" ]
 }
 
 set_screen_cmd() {
-	screen_cmd="screen -c ${SCREENRC:-/dev/null} -q -r ${SCREEN_NAME:=xen} -X"
+	export SCREENDIR
+	screen_cmd="screen -c ${SCREENRC:-/dev/null} -q -r -S ${SCREEN_NAME:=xen} -X"
+}
+
+exists_screen() {
+	export SCREENDIR
+	screen -c ${SCREENRC:-/dev/null} -S ${SCREEN_NAME:=xen} -q -ls -r
+	# <10 no sessions, 10 session, but attached, 11 1 session, 12 2 sessions, ...
+	running_sessions=$?
+	return $running_sessions
 }
 
 start() {
@@ -37,22 +55,48 @@
 
 	einfo "Starting Xen domains from ${AUTODIR:=/etc/xen/auto}"
 	if using_screen ; then
-		ebegin "Creating screen session to hold domain consoles"
-		(  screen -c ${SCREENRC:-/dev/null} -d -m -S ${SCREEN_NAME} -t dom0 \
-		&& sleep 5 \
-		&& ${screen_cmd} zombie dr \
-		&& logrotate -f /etc/xen/xen-consoles.logrotate \
-		&& ${screen_cmd} logfile  /var/log/xen-consoles/%t.log \
-		&& ${screen_cmd} logfile flush ${SCREEN_LOG_INTERVAL:-1} \
-		&& ${screen_cmd} log on \
-		&& ${screen_cmd} deflog on ) >/dev/null
-		if [ $? -ne 0 ] ; then
+		export SCREENDIR 
+		einfo "Wiping old sessions"
+		screen -S ${SCREEN_NAME:=xen} -wipe
+		exists_screen
+		rsessions=$?
+		case $rsessions in
+		"8")	# no screeen, create
+			ebegin "Creating screen session to hold domain consoles"
+			( 
+			screen -c ${SCREENRC:-/dev/null} -d -m -S ${SCREEN_NAME:=xen} -t dom0 \
+			&& sleep 5 \
+			&& ${screen_cmd} zombie dr \
+			&& logrotate -f /etc/xen/xen-consoles.logrotate \
+			&& ${screen_cmd} logfile  /var/log/xen-consoles/%t.log \
+			&& ${screen_cmd} logfile flush ${SCREEN_LOG_INTERVAL:-1} \
+			&& ${screen_cmd} log on \
+			&& ${screen_cmd} deflog on ) 2>&1 >/tmp/debug #>/dev/null
+			if [ $? -ne 0 ] ; then
+				eend 1
+				return 1
+			else
+				eend
+			fi
+			;;
+		"10")	# screen, but attached. detach.
+			ebegin "Detaching the connected screen session"
+			screen -d -S ${SCREEN_NAME:=xen}
+			eend $?
+			;;
+		"11")	# one session free, do nothing
+			einfo "Already existing screen session, doing nothing"
+			;;
+		*)	# more than one session
+			let rsessions=$rsessions-10
+			ebegin "$rsessions session running. Please check with screen -S xen -ls."
 			eend 1
 			return 1
-		else
-			eend
-		fi
+		esac
 	fi
+	# debug
+	#eend 1
+	#return 1
 	# Create all domains with config files in AUTODIR.
 	for dom in $(ls "${AUTODIR:=/etc/xen/auto}/"* 2>/dev/null | sort); do
 		name=$(get_domname ${dom})
@@ -76,8 +120,16 @@
 	einfo "Shutting down Xen domains from ${AUTODIR:=/etc/xen/auto}"
 	# Stop all domains with config files in AUTODIR.
 	DOMAINS="$(ls "${AUTODIR:=/etc/xen/auto}/"* 2>/dev/null | sort -r)"
-
-	if [ "$PARALLEL_SHUTDOWN" = "yes" ] ; then
+	RDOMAINS="$(/usr/sbin/xl vm-list|awk '{print $3}'|grep -v "^name$")"
+	
+	# Adding running domains
+	for rdom in $RDOMAINS ; do
+		if [[ "`echo $DOMAINS | grep $rdom`" == "" ]] ; then
+			DOMAINS="$rdom $DOMAINS"
+		fi
+	done
+	
+	if [[ "$PARALLEL_SHUTDOWN" == "yes" ]] ; then
 		for dom in $DOMAINS ; do
 			name=$(get_domname ${dom})
 			if is_running ${name} ; then
@@ -87,21 +139,50 @@
 				einfo "  Not stopping domain ${name} - not running"
 			fi
 		done
-		einfo "  Waiting for shutdown of domains that are still running"
-		wait
-		eend $?
+		einfo "  Waiting ${MAXWAIT} seconds for shutdown of domains that are still running"
+		counter=0
+		while domains_running ; do
+			if [[ ${counter} -gt ${MAXWAIT} ]] ; then
+				break
+			fi
+			sleep 1
+			let counter=$counter+1
+			echo -n .
+		done
 	else
 		for dom in $DOMAINS ; do
 			name=$(get_domname ${dom})
 			if is_running ${name} ; then
-				ebegin "  Waiting for domain ${name} to shutdown"
-				xl shutdown -w ${name} >/dev/null
-				eend $?
+				ebegin "  Waiting ${MAXWAIT} seconds for domain ${name} to shutdown"
+				xl shutdown ${name} >/dev/null
+				counter=0
+				while is_running ${name} ; do
+					if [[ ${counter} -gt ${MAXWAIT} ]]
+					then
+						break
+					fi
+					sleep 1
+					let counter=$counter+1
+					echo -n .
+				done
 			else
 				einfo "  Not stopping domain ${name} - not running"
 			fi
 		done
 	fi
+	
+	# Destroying remaining domains
+	DOMAINS="$(/usr/sbin/xl vm-list|awk '{print $3}'|grep -v "^name$")"
+	for dom in $DOMAINS ; do
+		name=$(get_domname ${dom})
+		if is_running ${name} ; then
+			ebegin "  Destroying running domain ${name}..."
+			xl destroy ${name} >/dev/null
+		else
+			einfo "  Not stopping domain ${name} - not running"
+		fi
+	done
+
 	if using_screen ; then
 		if ${screen_cmd} sleep 0 >/dev/null 2>&1 ; then
 			ebegin "Closing screen session ${SCREEN_NAME}"