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|
#!/bin/sh
# ctdb event script for Samba
. $CTDB_BASE/functions
detect_init_style
case $CTDB_INIT_STYLE in
suse)
CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-smb}
CTDB_SERVICE_NMB=${CTDB_SERVICE_NMB:-nmb}
;;
debian)
CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-samba}
CTDB_SERVICE_NMB=${CTDB_SERVICE_NMB:-""}
;;
*)
# Use redhat style as default:
CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-smb}
CTDB_SERVICE_NMB=${CTDB_SERVICE_NMB:-""}
;;
esac
service_name="samba"
loadconfig
ctdb_setup_service_state_dir
service_start ()
{
# make sure samba is not already started
service "$CTDB_SERVICE_SMB" stop > /dev/null 2>&1
if [ -n "$CTDB_SERVICE_NMB" ] ; then
service "$CTDB_SERVICE_NMB" stop > /dev/null 2>&1
fi
killall -0 -q smbd && {
sleep 1
# make absolutely sure samba is dead
killall -q -9 smbd
}
killall -0 -q nmbd && {
sleep 1
# make absolutely sure samba is dead
killall -q -9 nmbd
}
# start Samba service. Start it reniced, as under very heavy load
# the number of smbd processes will mean that it leaves few cycles
# for anything else
net serverid wipe
if [ -n "$CTDB_SERVICE_NMB" ] ; then
nice_service "$CTDB_SERVICE_NMB" start || die "Failed to start nmbd"
fi
nice_service "$CTDB_SERVICE_SMB" start || die "Failed to start samba"
}
service_stop ()
{
service "$CTDB_SERVICE_SMB" stop
if [ -n "$CTDB_SERVICE_NMB" ] ; then
service "$CTDB_SERVICE_NMB" stop
fi
}
service_reconfigure ()
{
# Samba automatically reloads config - no restart needed.
:
}
# set default samba cleanup period - in minutes
[ -z "$SAMBA_CLEANUP_PERIOD" ] && {
SAMBA_CLEANUP_PERIOD=10
}
# we keep a cached copy of smb.conf here
smbconf_cache="$service_state_dir/smb.conf.cache"
#############################################
# update the smb.conf cache in the foreground
testparm_foreground_update() {
testparm -s 2> /dev/null | egrep -v 'registry.shares.=|include.=' > "$smbconf_cache"
}
#############################################
# update the smb.conf cache in the background
testparm_background_update() {
# if the cache doesn't exist, then update in the foreground
[ -f $smbconf_cache ] || {
testparm_foreground_update
}
# otherwise do a background update
(
tmpfile="${smbconf_cache}.$$"
testparm -v -s > $tmpfile 2> /dev/null &
# remember the pid of the teamparm process
pid="$!"
# give it 10 seconds to run
timeleft=10
while [ $timeleft -gt 0 ]; do
timeleft=$(($timeleft - 1))
# see if the process still exists
kill -0 $pid > /dev/null 2>&1 || {
# it doesn't exist, grab its exit status
wait $pid
[ $? = 0 ] || {
echo "50.samba: smb.conf background update exited with status $?"
rm -f "${tmpfile}"
exit 1
}
# put the new smb.conf contents in the cache (atomic rename)
# make sure we remove references to the registry while doing
# this to ensure that running testparm on the cache does
# not use the registry
egrep -v 'registry.shares.=|include.=' < "$tmpfile" > "${tmpfile}.2"
rm -f "$tmpfile"
mv -f "${tmpfile}.2" "$smbconf_cache" || {
echo "50.samba: failed to update background cache"
rm -f "${tmpfile}.2"
exit 1
}
exit 0
}
# keep waiting for testparm to finish
sleep 1
done
# it took more than 10 seconds - kill it off
rm -f "${tmpfile}"
kill -9 "$pid" > /dev/null 2>&1
echo "50.samba: timed out updating smbconf cache in background"
exit 1
) &
}
##################################################
# show the testparm output using a cached smb.conf
# to avoid registry access
testparm_cat() {
[ -f $smbconf_cache ] || {
testparm_foreground_update
}
testparm -v -s "$smbconf_cache" "$@" 2>/dev/null
}
list_samba_shares ()
{
testparm_cat |
sed -n -e 's@^[[:space:]]*path[[:space:]]*=[[:space:]]@@p' |
sed -e 's/"//g'
}
###########################
# periodic cleanup function
periodic_cleanup() {
# running smbstatus scrubs any dead entries from the connections
# and sessionid database
# echo "Running periodic cleanup of samba databases"
smbstatus -np > /dev/null 2>&1 &
}
###########################
ctdb_start_stop_service
is_ctdb_managed_service || exit 0
ctdb_service_check_reconfigure
###########################
case "$1" in
startup)
ctdb_service_start
;;
shutdown)
ctdb_service_stop
;;
monitor)
# Create a dummy file to track when we need to do periodic cleanup
# of samba databases
periodic_cleanup_file="$service_state_dir/periodic_cleanup"
[ -f "$periodic_cleanup_file" ] || {
touch "$periodic_cleanup_file"
}
[ `find "$periodic_cleanup_file" -mmin +$SAMBA_CLEANUP_PERIOD | wc -l` -eq 1 ] && {
# Cleanup the databases
periodic_cleanup
touch "$periodic_cleanup_file"
}
if [ "$CTDB_SAMBA_SKIP_SHARE_CHECK" != "yes" ] ; then
testparm_background_update
testparm_cat | egrep '^WARNING|^ERROR|^Unknown' && {
testparm_foreground_update
testparm_cat | egrep '^WARNING|^ERROR|^Unknown' && \
die "ERROR: testparm shows smb.conf is not clean"
}
list_samba_shares | ctdb_check_directories_probe || {
testparm_foreground_update
list_samba_shares |
ctdb_check_directories
} || exit $?
fi
smb_ports="$CTDB_SAMBA_CHECK_PORTS"
if [ -z "$smb_ports" ] ; then
smb_ports=`testparm_cat --parameter-name="smb ports"`
fi
ctdb_check_tcp_ports $smb_ports || exit $?
;;
*)
ctdb_standard_event_handler "$@"
;;
esac
exit 0
|
