-#!/bin/sh
+#!/bin/bash
#
# /etc/init.d/xendomains
# Start / stop domains automatically when domain 0 boots / shuts down.
# Should-Stop:
# Default-Start: 3 4 5
# Default-Stop: 0 1 2 6
+# Default-Enabled: yes
# Short-Description: Start/stop secondary xen domains
-# Description: Start / stop domains automatically when domain 0
+# Description: Start / stop domains automatically when domain 0
# boots / shuts down.
### END INIT INFO
+# Correct exit code would probably be 5, but it's enough
+# if xend complains if we're not running as privileged domain
if ! [ -e /proc/xen/privcmd ]; then
exit 0
fi
-RETVAL=0
-
-INITD=/etc/init.d
-
-AUTODIR=/etc/xen/auto
LOCKFILE=/var/lock/subsys/xendomains
-
-if [ -e /lib/lsb ]; then
- # assume an LSB-compliant distro (Debian with LSB package,
- # recent-enough SuSE, others...)
-
- . /lib/lsb/init-functions # source LSB standard functions
-
- on_fn_exit()
+XENDOM_CONFIG=/etc/sysconfig/xendomains
+
+test -r $XENDOM_CONFIG || { echo "$XENDOM_CONFIG not existing";
+ if [ "$1" = "stop" ]; then exit 0;
+ else exit 6; fi; }
+
+. $XENDOM_CONFIG
+
+# Use the SUSE rc_ init script functions;
+# emulate them on LSB, RH and other systems
+if test -e /etc/rc.status; then
+ # SUSE rc script library
+ . /etc/rc.status
+else
+ _cmd=$1
+ declare -a _SMSG
+ if test "${_cmd}" = "status"; then
+ _SMSG=(running dead dead unused unknown)
+ _RC_UNUSED=3
+ else
+ _SMSG=(done failed failed missed failed skipped unused failed failed)
+ _RC_UNUSED=6
+ fi
+ if test -e /lib/lsb/init-functions; then
+ # LSB
+ . /lib/lsb/init-functions
+ echo_rc()
+ {
+ if test ${_RC_RV} = 0; then
+ log_success_msg " [${_SMSG[${_RC_RV}]}] "
+ else
+ log_failure_msg " [${_SMSG[${_RC_RV}]}] "
+ fi
+ }
+ elif test -e /etc/init.d/functions; then
+ # REDHAT
+ . /etc/init.d/functions
+ echo_rc()
+ {
+ #echo -n " [${_SMSG[${_RC_RV}]}] "
+ if test ${_RC_RV} = 0; then
+ success " [${_SMSG[${_RC_RV}]}] "
+ else
+ failure " [${_SMSG[${_RC_RV}]}] "
+ fi
+ }
+ else
+ # emulate it
+ echo_rc()
+ {
+ echo " [${_SMSG[${_RC_RV}]}] "
+ }
+ fi
+ rc_reset() { _RC_RV=0; }
+ rc_failed()
{
- if [ $RETVAL -eq 0 ]; then
- log_success_msg
- else
- log_failure_msg
- fi
+ if test -z "$1"; then
+ _RC_RV=1;
+ elif test "$1" != "0"; then
+ _RC_RV=$1;
+ fi
+ return ${_RC_RV}
}
-elif [ -r $INITD/functions ]; then
- # assume a Redhat-like distro
- . $INITD/functions # source Redhat functions
-
- on_fn_exit()
+ rc_check()
{
- if [ $RETVAL -eq 0 ]; then
- success
- else
- failure
- fi
-
- echo
+ return rc_failed $?
+ }
+ rc_status()
+ {
+ rc_failed $?
+ if test "$1" = "-r"; then _RC_RV=0; shift; fi
+ if test "$1" = "-s"; then rc_failed 5; echo_rc; rc_failed 3; shift; fi
+ if test "$1" = "-u"; then rc_failed ${_RC_UNUSED}; echo_rc; rc_failed 3; shift; fi
+ if test "$1" = "-v"; then echo_rc; shift; fi
+ if test "$1" = "-r"; then _RC_RV=0; shift; fi
+ return ${_RC_RV}
}
-else
- # none of the above
- LOCKFILE=/var/lock/xendomains
-
- on_fn_exit()
+ rc_exit() { exit ${_RC_RV}; }
+ rc_active()
{
- echo
+ if test -z "$RUNLEVEL"; then read RUNLEVEL REST < <(/sbin/runlevel); fi
+ if test -e /etc/init.d/S[0-9][0-9]${1}; then return 0; fi
+ return 1
}
fi
+if ! which usleep >&/dev/null
+then
+ usleep()
+ {
+ if [ -n "$1" ]
+ then
+ sleep $(( $1 / 1000000 ))
+ fi
+ }
+fi
+
+# Reset status of this service
+rc_reset
+
+##
+# Returns 0 (success) if the given parameter names a directory, and that
+# directory is not empty.
+#
+contains_something()
+{
+ if [ -d "$1" ] && [ `/bin/ls $1 | wc -l` -gt 0 ]
+ then
+ return 0
+ else
+ return 1
+ fi
+}
+
+# read name from xen config file
+rdname()
+{
+ NM=$(xm create --quiet --dryrun --defconfig "$1" |
+ sed -n 's/^.*(name \(.*\))$/\1/p')
+}
+
+rdnames()
+{
+ NAMES=
+ if ! contains_something "$XENDOMAINS_AUTO"
+ then
+ return
+ fi
+ for dom in $XENDOMAINS_AUTO/*; do
+ rdname $dom
+ if test -z $NAMES; then
+ NAMES=$NM;
+ else
+ NAMES="$NAMES|$NM"
+ fi
+ done
+}
+parseln()
+{
+ name=`echo "$1" | cut -c0-17`
+ name=${name%% *}
+ rest=`echo "$1" | cut -c18- `
+ read id mem cpu vcpu state tm < <(echo "$rest")
+}
-start() {
- if [ -f $LOCKFILE ]; then return; fi
+is_running()
+{
+ rdname $1
+ RC=1
+ while read LN; do
+ parseln "$LN"
+ if test $id = 0; then continue; fi
+ case $name in
+ ($NM)
+ RC=0
+ ;;
+ esac
+ done < <(xm list | grep -v '^Name')
+ return $RC
+}
- echo -n $"Starting auto Xen domains:"
+start()
+{
+ if [ -f $LOCKFILE ]; then
+ echo -n "xendomains already running (lockfile exists)"
+ return;
+ fi
- # We expect config scripts for auto starting domains to be in
- # AUTODIR - they could just be symlinks to files elsewhere
- if [ -d $AUTODIR ] && [ $(ls $AUTODIR | wc -l) -gt 0 ]; then
+ if [ "$XENDOMAINS_RESTORE" = "true" ] &&
+ contains_something "$XENDOMAINS_SAVE"
+ then
+ mkdir -p $(dirname "$LOCKFILE")
touch $LOCKFILE
-
- # Create all domains with config files in AUTODIR.
- for dom in $AUTODIR/*; do
- xm create --quiet --defconfig $dom
+ echo -n "Restoring Xen domains:"
+ for dom in $XENDOMAINS_SAVE/*; do
+ echo -n " ${dom##*/}"
+ xm restore $dom
if [ $? -ne 0 ]; then
- RETVAL=$?
+ rc_failed $?
+ echo -n '!'
+ else
+ # mv $dom ${dom%/*}/.${dom##*/}
+ rm $dom
fi
done
-
+ echo .
fi
- on_fn_exit
+ if contains_something "$XENDOMAINS_AUTO"
+ then
+ touch $LOCKFILE
+ echo -n "Starting auto Xen domains:"
+ # We expect config scripts for auto starting domains to be in
+ # XENDOMAINS_AUTO - they could just be symlinks to files elsewhere
+
+ # Create all domains with config files in XENDOMAINS_AUTO.
+ # TODO: We should record which domain name belongs
+ # so we have the option to selectively shut down / migrate later
+ for dom in $XENDOMAINS_AUTO/*; do
+ echo -n " ${dom##*/}"
+ if is_running $dom; then
+ echo -n "(skip)"
+ else
+ xm create --quiet --defconfig $dom
+ if [ $? -ne 0 ]; then
+ rc_failed $?
+ echo -n '!'
+ else
+ usleep $XENDOMAINS_CREATE_USLEEP
+ fi
+ fi
+ done
+ fi
+}
+
+all_zombies()
+{
+ while read LN; do
+ parseln "$LN"
+ if test $id = 0; then continue; fi
+ if test "$state" != "-b---d" -a "$state" != "-----d"; then
+ return 1;
+ fi
+ done < <(xm list | grep -v '^Name')
+ return 0
+}
+
+# Wait for max $XENDOMAINS_STOP_MAXWAIT for xm $1 to finish;
+# if it has not exited by that time kill it, so the init script will
+# succeed within a finite amount of time; if $2 is nonnull, it will
+# kill the command as well as soon as no domain (except for zombies)
+# are left (used for shutdown --all).
+watchdog_xm()
+{
+ if test -z "$XENDOMAINS_STOP_MAXWAIT" -o "$XENDOMAINS_STOP_MAXWAIT" = "0"; then
+ exit
+ fi
+ usleep 20000
+ for no in `seq 0 $XENDOMAINS_STOP_MAXWAIT`; do
+ # exit if xm save/migrate/shutdown is finished
+ PSAX=`ps axlw | grep "xm $1" | grep -v grep`
+ if test -z "$PSAX"; then exit; fi
+ echo -n "."; sleep 1
+ # go to kill immediately if there's only zombies left
+ if all_zombies && test -n "$2"; then break; fi
+ done
+ sleep 1
+ read PSF PSUID PSPID PSPPID < <(echo "$PSAX")
+ # kill xm $1
+ kill $PSPID >/dev/null 2>&1
}
stop()
{
+ # Collect list of domains to shut down
+ if test "$XENDOMAINS_AUTO_ONLY" = "true"; then
+ rdnames
+ fi
+ echo -n "Shutting down Xen domains:"
+ while read LN; do
+ parseln "$LN"
+ if test $id = 0; then continue; fi
+ echo -n " $name"
+ if test "$XENDOMAINS_AUTO_ONLY" = "true"; then
+ case $name in
+ ($NAMES)
+ # nothing
+ ;;
+ (*)
+ echo -n "(skip)"
+ continue
+ ;;
+ esac
+ fi
+ # XENDOMAINS_SYSRQ chould be something like just "s"
+ # or "s e i u" or even "s e s i u o"
+ # for the latter, you should set XENDOMAINS_USLEEP to 1200000 or so
+ if test -n "$XENDOMAINS_SYSRQ"; then
+ for sysrq in $XENDOMAINS_SYSRQ; do
+ echo -n "(SR-$sysrq)"
+ xm sysrq $id $sysrq
+ if test $? -ne 0; then
+ rc_failed $?
+ echo -n '!'
+ fi
+ # usleep just ignores empty arg
+ usleep $XENDOMAINS_USLEEP
+ done
+ fi
+ if test "$state" = "-b---d" -o "$state" = "-----d"; then
+ echo -n "(zomb)"
+ continue
+ fi
+ if test -n "$XENDOMAINS_MIGRATE"; then
+ echo -n "(migr)"
+ watchdog_xm migrate &
+ WDOG_PID=$!
+ xm migrate $id $XENDOMAINS_MIGRATE
+ if test $? -ne 0; then
+ rc_failed $?
+ echo -n '!'
+ kill $WDOG_PID >/dev/null 2>&1
+ else
+ kill $WDOG_PID >/dev/null 2>&1
+ continue
+ fi
+ fi
+ if test -n "$XENDOMAINS_SAVE"; then
+ echo -n "(save)"
+ watchdog_xm save &
+ WDOG_PID=$!
+ mkdir -p "$XENDOMAINS_SAVE"
+ xm save $id $XENDOMAINS_SAVE/$name
+ if test $? -ne 0; then
+ rc_failed $?
+ echo -n '!'
+ kill $WDOG_PIG >/dev/null 2>&1
+ else
+ kill $WDOG_PIG >/dev/null 2>&1
+ continue
+ fi
+ fi
+ if test -n "$XENDOMAINS_SHUTDOWN"; then
+ # XENDOMAINS_SHUTDOWN should be "--halt --wait"
+ echo -n "(shut)"
+ watchdog_xm shutdown &
+ WDOG_PID=$!
+ xm shutdown $id $XENDOMAINS_SHUTDOWN
+ if test $? -ne 0; then
+ rc_failed $?
+ echo -n '!'
+ fi
+ kill $WDOG_PIG >/dev/null 2>&1
+ fi
+ done < <(xm list | grep -v '^Name')
+
# NB. this shuts down ALL Xen domains (politely), not just the ones in
# AUTODIR/*
# This is because it's easier to do ;-) but arguably if this script is run
# on system shutdown then it's also the right thing to do.
+ if ! all_zombies && test -n "$XENDOMAINS_SHUTDOWN_ALL"; then
+ # XENDOMAINS_SHUTDOWN_ALL should be "--all --halt --wait"
+ echo -n " SHUTDOWN_ALL "
+ watchdog_xm shutdown 1 &
+ WDOG_PID=$!
+ xm shutdown $XENDOMAINS_SHUTDOWN_ALL
+ if test $? -ne 0; then
+ rc_failed $?
+ echo -n '!'
+ fi
+ kill $WDOG_PID >/dev/null 2>&1
+ fi
- echo -n $"Shutting down all Xen domains:"
-
- xm shutdown --all --wait --halt
+ # Unconditionally delete lock file
+ rm -f $LOCKFILE
+}
- RETVAL=$?
+check_domain_up()
+{
+ while read LN; do
+ parseln "$LN"
+ if test $id = 0; then continue; fi
+ case $name in
+ ($1)
+ return 0
+ ;;
+ esac
+ done < <(xm list | grep -v "^Name")
+ return 1
+}
- [ $RETVAL -eq 0 ] && rm -f $LOCKFILE
+check_all_auto_domains_up()
+{
+ if ! contains_something "$XENDOMAINS_AUTO"
+ then
+ return 0
+ fi
+ missing=
+ for nm in $XENDOMAINS_AUTO/*; do
+ rdname $nm
+ found=0
+ if check_domain_up "$NM"; then
+ echo -n " $name"
+ else
+ missing="$missing $NM"
+ fi
+ done
+ if test -n "$missing"; then
+ echo -n " MISS AUTO:$missing"
+ return 1
+ fi
+ return 0
+}
- on_fn_exit
+check_all_saved_domains_up()
+{
+ if ! contains_something "$XENDOMAINS_SAVE"
+ then
+ return 0
+ fi
+ missing=`/bin/ls $XENDOMAINS_SAVE`
+ echo -n " MISS SAVED: " $missing
+ return 1
}
# This does NOT necessarily restart all running domains: instead it
# AUTODIR. If other domains have been started manually then they will
# not get restarted.
# Commented out to avoid confusion!
-#
-#restart()
-#{
-# stop
-# start
-#}
-# same as restart for now - commented out to avoid confusion
-#reload()
-#{
-# restart
-#}
+restart()
+{
+ stop
+ start
+}
+
+reload()
+{
+ restart
+}
case "$1" in
start)
start
+ rc_status
+ if test -f $LOCKFILE; then rc_status -v; fi
;;
stop)
stop
+ rc_status -v
;;
-# The following are commented out to disable them by default to avoid confusion
-# - see the notes above
-#
-# restart)
-# restart
-# ;;
-#
-# reload)
-# reload
-# ;;
+ restart)
+ restart
+ ;;
+ reload)
+ reload
+ ;;
status)
- xm list
+ echo -n "Checking for xendomains:"
+ if test ! -f $LOCKFILE; then
+ rc_failed 3
+ else
+ check_all_auto_domains_up
+ rc_status
+ check_all_saved_domains_up
+ rc_status
+ fi
+ rc_status -v
;;
*)
- echo $"Usage: $0 {start|stop|status}"
+ echo "Usage: $0 {start|stop|restart|reload|status}"
+ rc_failed 3
+ rc_status -v
;;
esac
-exit $RETVAL
+rc_exit
projects / packages / xen.git / blobdiff