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https://github.com/xen-project/xen.git
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Ian Campbell
f7506e96aa
oxenstored is an ocaml implementation of the xenstore daemon. It is faster, more scalable and more reliable than the C xenstored. In particular the transaction model in oxenstored does not involve taking a complete copy of the database and aborting on any (even non-conflicting) other change. There is a paper on the design and implementation of oxenstored at http://gazagnaire.org/pub/GH09.pdf which includes a performance evaluation and comparison with the C daemon etc. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
142 lines
3.7 KiB
Bash
142 lines
3.7 KiB
Bash
#!/bin/bash
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#
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# xencommons Script to start and stop xenstored and xenconsoled
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#
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# Author: Ian Jackson <ian.jackson@eu.citrix.com>
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#
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# chkconfig: 2345 70 10
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# description: Starts and stops xenstored and xenconsoled
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### BEGIN INIT INFO
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# Provides: xenstored xenconsoled
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# Required-Start: $syslog $remote_fs
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# Should-Start:
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# Required-Stop: $syslog $remote_fs
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# Should-Stop:
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Start/stop xenstored and xenconsoled
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# Description: Starts and stops the daemons neeeded for xl/xend
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### END INIT INFO
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if [ -d /etc/sysconfig ]; then
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xencommons_config=/etc/sysconfig
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else
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xencommons_config=/etc/default
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fi
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test -f $xencommons_config/xencommons && . $xencommons_config/xencommons
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XENCONSOLED_PIDFILE=/var/run/xenconsoled.pid
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shopt -s extglob
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# not running in Xen dom0 or domU
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if ! test -d /proc/xen ; then
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exit 0
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fi
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# mount xenfs in dom0 or domU with a pv_ops kernel
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if test "x$1" = xstart && \
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! test -f /proc/xen/capabilities && \
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! grep '^xenfs ' /proc/mounts >/dev/null;
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then
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mount -t xenfs xenfs /proc/xen
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fi
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# run this script only in dom0:
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# no capabilities file in xenlinux domU kernel
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# empty capabilities file in pv_ops domU kernel
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if test -f /proc/xen/capabilities && \
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! grep -q "control_d" /proc/xen/capabilities ; then
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exit 0
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fi
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do_start () {
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local time=0
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local timeout=30
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modprobe xen-evtchn 2>/dev/null
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modprobe xen-gntdev 2>/dev/null
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modprobe evtchn 2>/dev/null
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modprobe gntdev 2>/dev/null
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if ! `xenstore-read -s / >/dev/null 2>&1`
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then
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test -z "$XENSTORED_ROOTDIR" || XENSTORED_ROOTDIR="/var/lib/xenstored"
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rm -f "$XENSTORED_ROOTDIR"/tdb* &>/dev/null
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test -z "$XENSTORED_TRACE" || XENSTORED_ARGS=" -T /var/log/xen/xenstored-trace.log"
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if [ -n "$XENSTORED" ] ; then
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echo -n Starting $XENSTORED...
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$XENSTORED --pid-file /var/run/xenstored.pid $XENSTORED_ARGS
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elif [ -x /usr/sbin/oxenstored ] ; then
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echo -n Starting oxenstored...
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/usr/sbin/oxenstored --pid-file /var/run/xenstored.pid $XENSTORED_ARGS
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elif [ -x /usr/sbin/xenstored ] ; then
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echo -n Starting C xenstored...
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/usr/sbin/xenstored --pid-file /var/run/xenstored.pid $XENSTORED_ARGS
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else
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echo "No xenstored found"
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exit 1
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fi
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# Wait for xenstored to actually come up, timing out after 30 seconds
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while [ $time -lt $timeout ] && ! `xenstore-read -s / >/dev/null 2>&1` ; do
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echo -n .
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time=$(($time+1))
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sleep 1
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done
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echo
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# Exit if we timed out
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if ! [ $time -lt $timeout ] ; then
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echo Could not start xenstored
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exit 1
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fi
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echo Setting domain 0 name...
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xenstore-write "/local/domain/0/name" "Domain-0"
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fi
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echo Starting xenconsoled...
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test -z "$XENCONSOLED_TRACE" || XENCONSOLED_ARGS=" --log=$XENCONSOLED_TRACE"
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xenconsoled --pid-file=$XENCONSOLED_PIDFILE $XENCONSOLED_ARGS
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test -z "$XENBACKENDD_DEBUG" || XENBACKENDD_ARGS="-d"
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test "`uname`" != "NetBSD" || xenbackendd $XENBACKENDD_ARGS
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}
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do_stop () {
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echo Stopping xenconsoled
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if read 2>/dev/null <$XENCONSOLED_PIDFILE pid; then
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kill $pid
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while kill -9 $pid >/dev/null 2>&1; do sleep 0.1; done
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rm -f $XENCONSOLED_PIDFILE
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fi
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echo WARNING: Not stopping xenstored, as it cannot be restarted.
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}
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case "$1" in
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start)
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do_start
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;;
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status)
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xenstore-read -s /
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;;
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stop)
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do_stop
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;;
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reload)
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echo >&2 'Reload not available; use force-reload'; exit 1
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;;
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force-reload|restart)
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do_stop
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do_start
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;;
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*)
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# do not advertise unreasonable commands that there is no reason
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# to use with this device
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echo $"Usage: $0 {start|stop|status|restart|force-reload}"
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exit 1
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esac
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exit $?
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