#!/bin/sh
#
# This script logs out from all active iSCSI sessions, excluding those
# listed in /run/open-iscsi/shutdown-keep-sessions. That file is
# generated by umountiscsi.sh and determines which sessions should not
# be terminated.
#
ISCSIADM=/sbin/iscsiadm
PIDFILE=/run/iscsid.pid
ISCSI_ROOT_KEEP_ALL_SESSIONS_AT_SHUTDOWN=0
if [ -f /etc/default/open-iscsi ]; then
. /etc/default/open-iscsi
fi
if [ -f /etc/iscsi/iscsi.initramfs ] && [ $ISCSI_ROOT_KEEP_ALL_SESSIONS_AT_SHUTDOWN -eq 1 ]; then
# Don't logout from any sessions if root is on initramfs and the
# administrator wanted it that way.
exit 0
fi
if [ ! -s $PIDFILE ] || ! kill -0 `sed -n 1p $PIDFILE` >/dev/null 2>/dev/null ; then
# Don't logout from iSCSI sessions if daemon isn't running
echo "iSCSI initiator daemon not running, not logging out from targets." >&2
exit 1
fi
EXCLUDED_SESSIONS=""
if [ -f /run/open-iscsi/shutdown-keep-sessions ] ; then
_EXCLUDED_SESSIONS=$(cat /run/open-iscsi/shutdown-keep-sessions)
for s in ${_EXCLUDED_SESSIONS} ; do
EXCLUDED_SESSIONS="${EXCLUDED_SESSIONS:+$EXCLUDED_SESSIONS }${s}"
done
fi
# trivial case
if [ -z "$EXCLUDED_SESSIONS" ] ; then
$ISCSIADM -m node --logoutall=all
exit $?
fi
in_set() {
eval _set=\$$1
case "${_set}" in
("$2"|*" $2"|"$2 "*|*" $2 "*) return 0 ;;
(*) return 1 ;;
esac
}
# go through all iSCSI sessions, but exclude those where we don't want
# to logout from
RC=0
for host_dir in /sys/devices/platform/host* ; do
[ -d "$host_dir"/iscsi_host* ] || continue
for session_dir in "$host_dir"/session* ; do
if in_set EXCLUDED_SESSIONS "$session_dir" ; then
continue
fi
$ISCSIADM -m session -r "$session_dir" --logout
rc=$?
if [ $rc -ne 0 ] ; then
RC=1
fi
done
done
exit $RC
Mini Shell