diff options
Diffstat (limited to 'net-fs/cvmfs/files/cvmfsd.initd')
| -rw-r--r-- | net-fs/cvmfs/files/cvmfsd.initd | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/net-fs/cvmfs/files/cvmfsd.initd b/net-fs/cvmfs/files/cvmfsd.initd new file mode 100644 index 000000000000..bc0c604dd95d --- /dev/null +++ b/net-fs/cvmfs/files/cvmfsd.initd @@ -0,0 +1,191 @@ +#!/sbin/runscript + +. /etc/cvmfs/server.conf +[[ -f /etc/cvmfs/server.local ]] && . /etc/cvmfs/server.local + +extra_commands="checkconfig" +extra_started_commands="pause flush resume" + +description="Background daemon that writes the cvmfs character device into a log file" +description_checkconfig="Check configuration file validity" +description_pause="Pause the transactions (not a full stop)" +description_flush="Flush the CernVM-FS change log" +description_resume="Resume transactions after a pause" + +pidfile="/var/run/cvmfsd.pid" +subsysfile="/var/lock/subsys/cvmfsd" + +checkconfig() { + local var ret=0 + for var in SHADOW_DIR PUB_DIR LOG_FILE; do + eval value=\$$var + if [[ -z ${value} ]]; then + eerror "You need to set a value for ${var} in /etc/cvmfs/server.local" + ret=$((ret + $?)) + fi + done + return ${ret} +} + +depend() { + after localmount + use net +} + +# returns: 0 (stopped), 1 (running), 2 (paused) +check_status() { + if [ -f ${pidfile} ]; then + [ $(cat /sys/fs/redirfs/filters/cvmfsflt/lockdown) -eq 1 ] && return 2 + return 1 + fi + return 0 +} + +# FIXME: could we use start-stop-daemon instead of listen/unlisten? + +listen() { + ebegin "Starting journal writer" + nohup cat /dev/cvmfs >> "${LOG_FILE}" 2>/dev/null </dev/null & + [ $? -eq 0 ] && echo $! > ${pidfile} + eend $? +} + +unlisten() { + ebegin "Stopping journal writer" + local pid=$(cat ${pidfile}) + kill ${pid} + local killed=0 retries=0 + while [ ${killed} -eq 0 ]; do + sleep 1 + kill -0 ${pid} 2>/dev/null + killed=$? + retries=$((retries + 1)) + [ ${retries} -eq 3 ] && kill -9 ${pid} + done + eend $? +} + +start() { + checkconfig || return 1 + + if [ ! -d ${SHADOW_DIR} ]; then + eerror "Missing ${SHADOW_DIR}" + return 1 + fi + + if mkdir -p "$(echo "${LOG_FILE}" | grep -o '\([^\/]*\/\)*')"; then + eerror "Could not create file system journal in ${LOG_FILE}" + return 1 + fi + + ebegin "Loading cvmfsflt kernel module" + modprobe -q redirfs && modprobe -q cvmfsflt + eend $? || return 1 + + ebegin "Linking to character device" + rm -f /dev/cvmfs + mknod /dev/cvmfs c $(awk '/cvmfs/ {print $1}' /proc/devices) 0 > /dev/null 2>&1 + chmod 0600 /dev/cvmfs + eend $? || return 1 + + ebegin "Setting filter path to ${SHADOW_DIR}" + echo -n "a:i:${SHADOW_DIR}" > /sys/fs/redirfs/filters/cvmfsflt/paths + eend $? || return 1 + + listen || return 1 + ebegin "Starting CernVM-FS daemon" + touch ${subsysfile} + eend $? +} + + +pause() { + check_status + local ret=$? + if [ ${ret} -eq 0 ]; then + eerror "CernVM-FS daemon is stopped" + return 1 + fi + if [ ${ret} -eq 2 ]; then + ewarn "CernVM-FS daemon is already paused" + return 1 + fi + + ebegin "Locking down ${SHADOW_DIR}" + echo -n "1" > /sys/fs/redirfs/filters/cvmfsflt/lockdown + eend $? || return 1 + + ebegin "Waiting for pending operations on ${SHADOW_DIR}" + local nowops noll + while true; do + nowops=$(cat /sys/fs/redirfs/filters/cvmfsflt/nowops) + [ $? -ne 0 ] && eend 1 && return 1 + [ ${nowops} -eq 0 ] && break + sleep 1 + done + eend $? + + ebegin "Waiting for pending messages in call buffer" + local noll + while true; do + noll=$(cat /sys/fs/redirfs/filters/cvmfsflt/noll) + [ $? -ne 0 ] && eend 1 && return 1 + [ ${noll} -eq 0 ] && break + sleep 1 + done + eend $? || return 1 + unlisten || return 1 + mark_service_stopped cvmfsd +} + +resume() { + check_status + local ret=$? + if [ ${ret} -eq 0 ]; then + eerror "CernVM-FS daemon is stopped" + return 1 + fi + if [ $retval -eq 1 ]; then + ewarn "CernVM-FS daemon is already running" + return 1 + fi + + listen || return 1 + + ebegin "Open up ${SHADOW_DIR}" + echo -n "0" > /sys/fs/redirfs/filters/cvmfsflt/lockdown + eend $? || return 1 + mark_service_started cvmfsd +} + + +stop() { + check_status + local ret=$? + if [ ${ret} -eq 0 ]; then + ewarn "CernVM-FS daemon is already stopped" + return 2 + fi + + if [ ${ret} -eq 1 ]; then + pause + ret=$? + [ ${ret} -ne 0 ] && return ${ret} + fi + + ebegin "Unloading cvmfsflt kernel module" + echo -n "c\0" > /sys/fs/redirfs/filters/cvmfsflt/paths || ret=$((ret + 1)) + echo -n "1\0" > /sys/fs/redirfs/filters/cvmfsflt/unregister || ret=$((ret + 1)) + rmmod cvmfsflt || ret=$((ret + 1)) + eend ${ret} || return 1 + + ebegin "Shutting down CernVM-FS daemon" + rm -f ${pidfile} ${subsysfile} + eend $? +} + +flush() { + ebegin "Flushing CernVM-FS server file system change log" + cat /dev/null > "${LOG_FILE}" + eend $? +} |