#!/bin/sh
# /usr/local/sbin/rmbackup
#
# Use this script to remove the external SATA drive from the SCSI device list

source /etc/functions-colors
source /etc/functions-system

# variables DRIVEMODEL and SMARTPARAMS are stored in /etc/functions-system

BACKUPDRIVE=$DRIVEMODEL

if [ -z "`lsscsi | grep $BACKUPDRIVE`" ]; then
  echo -e "${BOLDGREEN}$BACKUPDRIVE${BOLDRED} does not seem to be connected!${COLOR_RESET}"
  lsscsi
  echo
  exit
fi
echo -e "Attempting to remove ${BOLDGREEN}$BACKUPDRIVE${COLOR_RESET} from the SCSI list."
HOSTS="`lsscsi | grep $BACKUPDRIVE | sed 's/\[//' | sed 's/\]//' | sed 's/\:/ /g' | awk '{print $1}'`"
CHANNELS="`lsscsi | grep $BACKUPDRIVE | sed 's/\[//' | sed 's/\]//' | sed 's/\:/ /g' | awk '{print $2}'`"
IDS="`lsscsi | grep $BACKUPDRIVE | sed 's/\[//' | sed 's/\]//' | sed 's/\:/ /g' | awk '{print $3}'`"
LUNS="`lsscsi | grep $BACKUPDRIVE | sed 's/\[//' | sed 's/\]//' | sed 's/\:/ /g' | awk '{print $4}'`"
echo
lsscsi | grep $BACKUPDRIVE
echo
echo -e "HOSTS=${BOLDGREEN}$HOSTS${COLOR_RESET}"
echo -e "CHANNELS=${BOLDGREEN}$CHANNELS${COLOR_RESET}"
echo -e "IDS=${BOLDGREEN}$IDS${COLOR_RESET}"
echo -e "LUNS=${BOLDGREEN}$LUNS${COLOR_RESET}"
echo
echo -e "${BOLDYELLOW}Removing${COLOR_RESET} $BACKUPDRIVE from SCSI list..."
Wait_For_Response "Continue?"
Proceed_From_Response
echo -e "${BOLDWHITE}Checking mount status...${COLOR_RESET}"
DEVICE="`lsscsi | grep $BACKUPDRIVE | awk '{print $7}'`"
MOUNTPOINT="`mount | grep $DEVICE | awk '{print $1}'`"
if [ -n "$MOUNTPOINT" ]; then
  echo -e "${BOLDYELLOW}Oops! Found ${BOLDGREEN}$BACKUPDRIVE${BOLDYELLOW} mounted at $MOUNTPOINT. Unmounting...${COLOR_RESET}"
  umount $MOUNTPOINT
else
  echo "$BACKUPDRIVE does not seem to be mounted anywhere."
fi
echo
mount
echo
echo -e "${BOLDYELLOW}Is the $BACKUPDRIVE powered off?${COLOR_RESET}"
Wait_For_Response "Answering 'no' will keep the device on the scsi list:"
Proceed_From_Response

echo -e "${BOLDWHITE}This might take a few seconds...${COLOR_RESET}"

# remove from scsi bus
# caveat: the rescan-scsi-bus script will fail unless the sg3_utils package is installed
rescan-scsi-bus --remove --hosts=$HOSTS --channels=$CHANNELS --ids=$IDS --luns=$LUNS &>/dev/null
# show the user the results
lsscsi
echo

# quietly remove any separate conky displays for the backup drive
if [ -n "`ps ax | grep 'conky -t' | grep $DRIVEMODEL | grep -v grep`" ]; then
  PIDS="`ps ax | grep 'conky -t' | grep $DRIVEMODEL | awk '{print $1}' | grep -v grep`"
  for p in $PIDS ; do
    kill -9 $p
  done;
fi

# restart hddtemp daemon
echo -e "${BOLDWHITE}Restarting hddtemp daemon..."${COLOR_RESET}
killall hddtemp &>/dev/null
hddtemp -d /dev/hda /dev/sda
echo

echo -e "${BOLDWHITE}Done.${COLOR_RESET}"
echo