Renamed iscsi_vms.sh to smart-iscsi.sh

2020-05-23 15:14:39 +01:00
parent 5dc670cfcf
commit 7be64c8ee6
1 changed files with 0 additions and 0 deletions
@@ -0,0 +1,168 @@
+#!/bin/bash
+
+DISK_UUID="12E6B87AE6B86021"
+IQN="iqn.2000-01.com.synology:SR3.VMs"
+PORTAL_IP="192.168.0.3"
+MOUNT_DIR="/home/dunestorm/VMs"
+MONITOR_PROC="vmware"
+MONITOR_PROC_CNT=7
+
+# Do not modify
+_MONITOR_PROC_CNT=$(pgrep -f $MONITOR_PROC | wc -l)
+_ISCSI_CON=""
+_FLAG_FORCE=0
+_FLAG_QUIET=0
+
+# The use of iscsiadm requires admin privilages
+read_iscsi_con (){
+	_ISCSI_CON=$(iscsiadm -m session) > /dev/null
+}
+
+show_help (){
+	echo "Smart iSCSI Mounter - Help"
+	echo ""
+	echo "[OVERRIDE] [FUNCTION]"
+	echo "Example: smart-iscsi -q -m"
+	echo ""
+	echo "Overrides:"
+	echo "'-q (--quiet)'"
+	echo "'-f (--force)'"
+	echo ""
+	echo "Functions:"
+	echo "'-m (--mount)'"
+	echo "'-u (--umount)'"
+	echo "'-s (--status)'"
+	echo "'-r (--release)'"
+	echo "'-h (--help)'"
+
+}
+
+report_status (){
+	if [ ${_FLAG_QUIET} == 0 ]
+	then
+		echo "[Showing status of mount-point]"
+		echo "INFO: Process '${MONITOR_PROC}' has ${_MONITOR_PROC_CNT} instances running."
+
+		if [ $(ls $MOUNT_DIR/. | wc -l) -ge 1 ]
+		then
+			echo ""
+			echo "Directory is mounted at:" $MOUNT_DIR
+		else
+			echo ""
+			echo "Directory is un-mounted from:" $MOUNT_DIR
+		fi
+
+		read_iscsi_con
+		echo ""
+		echo "There is/are currently '$(${_ISCSI_CON} 2>&1 | wc -l)' iSCSI connection(s) open:"
+		echo "${_ISCSI_CON}"
+	fi
+}
+
+check_proc_status (){
+	if [ ${_MONITOR_PROC_CNT} -gt $MONITOR_PROC_CNT ]
+	then
+		echo "WARNING: process '${MONITOR_PROC}' is still running, unable to unmount volume safely."
+		exit 2;
+	else
+		if [ ${_FLAG_QUIET} == 0 ]
+		then
+			echo "INFO: Process ${MONITOR_PROC} is not running."
+		fi
+	fi
+}
+
+mount_func (){
+	if [ ${_FLAG_QUIET} == 0 ]
+	then
+		echo "[Attempting to mount iSCSI volume]"
+	fi
+
+	if [[ ${_ISCSI_CON} == *${IQN}* ]] && [[ $_FLAG_FORCE -eq 0 ]]
+	then
+		echo ""
+		echo "WARNING: You're already connected to the '${IQN}' iSCSI target."
+		echo "Use the -f (--force) flag to bypass this warning."
+		exit 2;
+	fi
+
+	iscsiadm --mode node --targetname $IQN --portal $PORTAL_IP --login > /dev/null 2>&1
+	sleep 3
+	mount /dev/disk/by-uuid/$DISK_UUID $MOUNT_DIR -o noauto,noperm > /dev/null 2>&1
+}
+
+umount_func (){
+	if [ ${_FLAG_QUIET} == 0 ]
+	then
+		echo "[Attempting to un-mount iSCSI volume]"
+	fi
+
+	if [[ $_FLAG_FORCE -eq 0 ]]; then 
+		check_proc_status
+	fi
+
+	if [[ ${_ISCSI_CON} != *${IQN}* ]] && [[ $_FLAG_FORCE -eq 0 ]]
+	then
+		echo ""
+		echo "WARNING: You're not currently connected to the '${IQN}' iSCSI target."
+		echo "Use the -f (--force) flag to bypass this warning."
+		exit 2;
+	fi
+
+	umount -l $MOUNT_DIR > /dev/null 2>&1
+	sleep 3
+	iscsiadm --mode node --targetname $IQN --portal $PORTAL_IP --logout > /dev/null 2>&1
+}
+
+check_admin (){
+	if [[ $EUID -ne 0 ]]
+	then
+		echo "This command requires root, please re-run with appropriate permissions."
+		exit 1;
+	fi
+}
+
+# Process input parameters
+for arg in "$@"; do
+	case "$arg" in
+		-q|--quiet)
+			read_iscsi_con
+			_FLAG_QUIET=1
+			shift
+			;;
+		-f|--force)
+			_FLAG_FORCE=1
+			shift
+			;;
+		-m|--mount)
+			check_admin
+			read_iscsi_con
+			mount_func
+			report_status
+			shift
+			;;
+		-u|--umount)
+			check_admin
+			read_iscsi_con
+			umount_func
+			report_status
+			shift
+			;;
+		-s|--status)
+			check_admin
+			read_iscsi_con
+			report_status
+			shift
+			;;
+		-r|--release)
+			echo "Smart iSCSI Mounter v0.98"
+			shift
+			;;
+		-h|--help)
+			show_help
+			shift
+			;;
+	esac
+done
+
+exit 0;