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|
#!/bin/bash
#
# /etc/init.d/iscsi
#
### BEGIN INIT INFO
# Provides: iscsi
# Required-Start: $network
# Should-Start:
# Required-Stop:
# Should-Stop:
# Default-Start: 3 5
# Default-Stop:
# Short-Description: Starts and stops the iSCSI client initiator
#
### END INIT INFO
PID_FILE=/var/run/iscsi.pid
CONFIG_FILE=/etc/iscsi/iscsid.conf
DAEMON=/sbin/iscsid
ISCSIADM=/sbin/iscsiadm
ARGS="-c $CONFIG_FILE -p $PID_FILE"
# Source LSB init functions
. /etc/rc.status
# Reset status of this service
rc_reset
iscsi_login_all_nodes()
{
echo -n "Setting up iSCSI targets: "
$ISCSIADM -m node --loginall=automatic 2> /dev/null
if [ $? == 21 ] ; then
rc_failed 6
fi
rc_status -v
}
iscsi_logout_all_nodes()
{
echo -n "Closing all iSCSI connections: "
# Logout from all sessions marked automatic
if ! $ISCSIADM -m node --logoutall=automatic 2> /dev/null; then
if [ $? == 21 ] ; then
RETVAL=6
else
RETVAL=1
fi
rc_failed $RETVAL
fi
rc_status -v
# Not sure whether this is still needed
sleep 1
return ${RETVAL:-0}
}
iscsi_umount_all_luns()
{
local d m dev p s
cat /proc/mounts | sed -ne '/^\/dev\/.*/p' | while read d m t o x; do
if [ "$m" = "/" ] ; then
continue;
fi
if [ -L "$d" ] ; then
d=$(readlink -f $d)
fi
dev=${d##/dev}
if [ "${dev##/sd}" = "$dev" ] ; then
continue;
fi
p="/sys/block${dev%%[0-9]*}"
if [ ! -d ${p} ] && [ ! -d ${p}/device ] ; then
continue;
fi
s=$(cd -P ${p}/device && echo $PWD)
case "$s" in
*/session[0-9]*/*)
# This is an iSCSI device
umount "$m"
;;
esac
done
}
iscsi_list_all_nodes()
{
# Check for active sessions
if $ISCSIADM -m session > /dev/null; then
return 0
fi
echo "Active connections:"
$ISCSIADM -m session | while read proto num PORTAL TARGET ; do
PORTAL=${PORTAL%,*}
echo -e "\t$TARGET at $PORTAL"
done
}
iscsi_discover_all_targets()
{
# Strip off any existing ID information
RAW_NODE_LIST=`iscsiadm -m node | sed -nre 's/^(\[[0-9a-f]*\] )?(.*)$/\2/p'`
# Obtain IPv4 list
IPV4_NODE_LIST=`echo "$RAW_NODE_LIST" | sed -nre 's/^([0-9]{1,3}(\.[0-9]{1,3}){3}):[^: ]* (.*)$/\1 \3/p'`
# Now obtain IPv6 list
IPV6_NODE_LIST=`echo "$RAW_NODE_LIST" | sed -nre 's/^([0-9a-f]{1,4}(:[0-9a-f]{0,4}){6}:[0-9a-f]{1,4}):[^: ]* (.*)$/\1 \3/p'`
DISC_TARGETS=""
while read NODE_ADDR NODE_NAME; do
[ -z "$NODE_ADDR" -a -z "$NODE_NAME" ] && continue
NODE_ATTRS=`iscsiadm -m node -p "$NODE_ADDR" -T "$NODE_NAME"`
NODE_STATUS=`echo "$NODE_ATTRS" | sed -nre 's/^.*node\.conn\[0\]\.startup = ([a-z]*).*$/\1/p'`
if [ "$NODE_STATUS" == 'automatic' ]; then
DISC_TARGETS=`echo "$DISC_TARGETS" | sed -re '/'"$NODE_ADDR"'/!{s/(.*)/\1 '"$NODE_ADDR"'/}'`
fi
done < <(echo "$IPV4_NODE_LIST"; echo "$IPV6_NODE_LIST")
for TARGET_ADDR in $DISC_TARGETS; do
echo -n "Attempting discovery on target at ${TARGET_ADDR}: "
iscsiadm -m discovery -t st -p "$TARGET_ADDR" > /dev/null 2>&1
if [ "$?" -ne 0 ]; then
rc_failed 1
rc_status -v
return 1
fi
rc_status -v
done
}
case "$1" in
start)
[ ! -d /var/lib/iscsi ] && mkdir -p /var/lib/iscsi
if checkproc $DAEMON ; then
RETVAL=0
else
echo -n "Starting iSCSI initiator service: "
modprobe iscsi_tcp
modprobe -q ib_iser
startproc $DAEMON $ARGS
RETVAL=$?
rc_status -v
fi
if [ "$RETVAL" == "0" ]; then
iscsi_discover_all_targets
RETVAL=$?
fi
if [ "$RETVAL" == "0" ]; then
iscsi_login_all_nodes
fi
;;
stop)
iscsi_umount_all_luns
if iscsi_logout_all_nodes ; then
iscsiadm -k 0
RETVAL=$?
else
RETVAL=1
fi
echo -n "Stopping iSCSI initiator service: "
if [ "$RETVAL" == "0" ]; then
rm -f $PID_FILE
status=0
modprobe -r iscsi_tcp
if [ "$?" -ne "0" -a "$?" -ne "1" ]; then
status=1
fi
modprobe -q -r ib_iser
if [ "$?" -ne "0" -a "$?" -ne "1" ]; then
status=1
fi
rc_failed $status
else
rc_failed $RETVAL
fi
rc_status -v
;;
status)
echo -n "Checking for iSCSI initiator service: "
if checkproc $DAEMON ; then
rc_status -v
iscsi_list_all_nodes
else
rc_failed 3
rc_status -v
fi
;;
restart)
$0 stop
RETVAL=$?
if [ "$RETVAL" != "0" ]; then
echo "Stopping iSCSI initiator service failed, not starting"
exit $RETVAL
fi
sleep 1
$0 start
;;
*)
echo "Usage: $0 {start|stop|status|restart}"
exit 1
;;
esac
rc_exit
|
