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#!/bin/bash

################################################
#
#  Spin down the given SCS disk(s).
#
#  SCSI disks (or disks that understand SCSI commands)
#  are assumed. The immediate bit is set so the command
#  should return immediately. The disk however will take
#  10 seconds or more to spin down.
#
#  This script assumes the sg3_utils package is installed.
#
###############################################

verbose=""

usage()
{
  echo "Usage: scsi_stop [-h] [-v] <device>+"
  echo "  where:"
  echo "    -h, --help           print usage message"
  echo "    -v, --verbose        more verbose output"
  echo ""
  echo "Send SCSI START STOP UNIT command to stop each <device>"
}

if (( $# < 1 ))
  then
    usage
    exit 1
fi

opt="$1"
while test ! -z "$opt" -a -z "${opt##-*}"; do
  opt=${opt#-}
  case "$opt" in
    h|-help) usage ; exit 0 ;;
    v|-verbose) verbose="-v" ;;
    *) echo "Unknown option: -$opt " ; exit 1 ;;
  esac
  shift
  opt="$1"
done

for i
do
        echo "sg_start -i 0 $verbose $i"
        sg_start -i 0 $verbose $i
done