Smart iSCSI Mounter v0.98.5
- Rearchitected script to handle loading of config files. - Included personal config file.
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Executable
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#!/bin/bash
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# Do not modify
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_RELEASE_VER="0.98.5"
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_CONF_FILE=$1
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_MONITOR_PROC_CNT=
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_ISCSI_CON=
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_FLAG_FORCE=0
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_FLAG_QUIET=0
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# The use of iscsiadm requires admin privilages
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read_iscsi_con (){
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_ISCSI_CON=$(iscsiadm -m session 2>&1 /dev/null)
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}
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load_conf_file (){
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_DEFAULT_CONF_FILE=$(echo /etc/smart-iscsi/$_CONF_FILE.conf)
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if [ -e $_DEFAULT_CONF_FILE ]
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then
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source $_DEFAULT_CONF_FILE
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else
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if [ -e $_CONF_FILE ]
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then
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source $_CONF_FILE
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else
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echo "ERROR: Config file not specified!"
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exit 2;
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fi
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fi
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# Set variables once valid config file has been loaded
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_MONITOR_PROC_CNT=$(pgrep -f $MONITOR_PROC | wc -l)
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}
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show_help (){
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echo "Smart iSCSI Mounter v$_RELEASE_VER - Help"
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echo ""
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echo " [EXECUTABLE] [CONFIG FILE] [OVERRIDE] [FUNCTION]"
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echo "Example: smart-iscsi config-file -q -m"
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echo "Example using fixed path: smart-iscsi ~/config-file.conf -q -m"
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echo ""
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echo "Config files:"
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echo "Place config files inside '/etc/smart-iscsi' and call them without the '.conf' extension."
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echo "Configs outside '/etc/smart-iscsi' must be called using their full path."
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echo ""
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echo "Sample config file (/etc/smart-iscsi/config-file.conf):"
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echo "DISK_UUID=\"ABCDEFGHIJK\" # UUID of mounted disk."
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echo "IQN=\"iqn.2000-01.com.synology:NAS.MyPool\" # IQN of iSCSI mount."
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echo "PORTAL_IP=\"192.168.0.1\" # IP of IQN portal."
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echo "MOUNT_DIR=\"/home/username/VMs\" # Mount location."
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echo "MONITOR_PROC=\"vmware\" # Process name to block un-mount process, requires below count to be set."
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echo "MONITOR_PROC_CNT=7 # Processes above this number will counter un-mount."
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echo ""
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echo "Overrides:"
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echo "'-q (--quiet)'"
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echo "'-f (--force)'"
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echo ""
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echo "Functions:"
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echo "'-m (--mount)'"
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echo "'-u (--umount)'"
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echo "'-s (--status)'"
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echo "'-r (--release)'"
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echo "'-h (--help)'"
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echo ""
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}
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report_status (){
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if [ ${_FLAG_QUIET} == 0 ]
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then
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echo "[Showing status of mount-point]"
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echo "INFO: Process '${MONITOR_PROC}' has ${_MONITOR_PROC_CNT} instances running."
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if [ $(ls $MOUNT_DIR/. | wc -l) -ge 1 ]
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then
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echo ""
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echo "Directory is mounted at:" $MOUNT_DIR
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else
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echo ""
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echo "Directory is un-mounted from:" $MOUNT_DIR
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fi
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read_iscsi_con
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echo ""
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echo "There is/are currently '$(${_ISCSI_CON} 2>&1 | wc -l)' iSCSI connection(s) open:"
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echo "${_ISCSI_CON}"
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fi
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}
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check_proc_status (){
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if [ ${_MONITOR_PROC_CNT} -gt $MONITOR_PROC_CNT ]
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then
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echo "WARNING: process '${MONITOR_PROC}' is still running, unable to unmount volume safely."
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exit 2;
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else
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if [ ${_FLAG_QUIET} == 0 ]
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then
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echo "INFO: Process ${MONITOR_PROC} is not running."
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fi
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fi
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}
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mount_func (){
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if [ ${_FLAG_QUIET} == 0 ]
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then
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echo "[Attempting to mount iSCSI volume]"
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fi
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if [[ ${_ISCSI_CON} == *${IQN}* ]] && [[ $_FLAG_FORCE -eq 0 ]]
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then
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echo ""
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echo "WARNING: You're already connected to the '${IQN}' iSCSI target."
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echo "Use the -f (--force) flag to bypass this warning."
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exit 2;
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fi
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iscsiadm --mode node --targetname $IQN --portal $PORTAL_IP --login > /dev/null 2>&1
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sleep 3
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mount /dev/disk/by-uuid/$DISK_UUID $MOUNT_DIR -o noauto,noperm > /dev/null 2>&1
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}
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umount_func (){
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if [ ${_FLAG_QUIET} == 0 ]
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then
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echo "[Attempting to un-mount iSCSI volume]"
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fi
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if [[ $_FLAG_FORCE -eq 0 ]]; then
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check_proc_status
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fi
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if [[ ${_ISCSI_CON} != *${IQN}* ]] && [[ $_FLAG_FORCE -eq 0 ]]
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then
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echo ""
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echo "WARNING: You're not currently connected to the '${IQN}' iSCSI target."
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echo "Use the -f (--force) flag to bypass this warning."
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exit 2;
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fi
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umount -l $MOUNT_DIR > /dev/null 2>&1
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sleep 3
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iscsiadm --mode node --targetname $IQN --portal $PORTAL_IP --logout > /dev/null 2>&1
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}
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check_admin (){
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if [[ $EUID -ne 0 ]]
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then
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echo "This command requires root, please re-run with appropriate permissions."
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exit 1;
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fi
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}
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# Process input parameters
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for arg in "$@"; do
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case "$arg" in
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-q|--quiet)
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read_iscsi_con
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_FLAG_QUIET=1
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shift
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;;
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-f|--force)
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_FLAG_FORCE=1
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shift
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;;
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-m|--mount)
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check_admin
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load_conf_file
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read_iscsi_con
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mount_func
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report_status
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shift
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;;
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-u|--umount)
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check_admin
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load_conf_file
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read_iscsi_con
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umount_func
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report_status
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shift
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;;
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-s|--status)
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check_admin
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load_conf_file
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read_iscsi_con
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report_status
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shift
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;;
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-r|--release)
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echo "Smart iSCSI Mounter v$_RELEASE_VER"
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shift
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;;
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-h|--help)
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show_help
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shift
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;;
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esac
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done
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exit 0;
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