1*44704f69SBart Van Assche#!/bin/bash 2*44704f69SBart Van Assche 3*44704f69SBart Van Assche################################################ 4*44704f69SBart Van Assche# 5*44704f69SBart Van Assche# Spin down the given SCS disk(s). 6*44704f69SBart Van Assche# 7*44704f69SBart Van Assche# SCSI disks (or disks that understand SCSI commands) 8*44704f69SBart Van Assche# are assumed. By default, the immediate bit is set so the 9*44704f69SBart Van Assche# command should return immediately. The disk however will 10*44704f69SBart Van Assche# take 10 seconds or more to spin down. The '-w' option 11*44704f69SBart Van Assche# causes each stop to wait until the disk reports that it 12*44704f69SBart Van Assche# has stopped. 13*44704f69SBart Van Assche# 14*44704f69SBart Van Assche# This script assumes the sg3_utils package is installed. 15*44704f69SBart Van Assche# 16*44704f69SBart Van Assche############################################### 17*44704f69SBart Van Assche 18*44704f69SBart Van Asscheverbose="" 19*44704f69SBart Van Asscheimmediate="-i" 20*44704f69SBart Van Assche 21*44704f69SBart Van Asscheusage() 22*44704f69SBart Van Assche{ 23*44704f69SBart Van Assche echo "Usage: scsi_stop [-h] [-v] [-w] <device>+" 24*44704f69SBart Van Assche echo " where:" 25*44704f69SBart Van Assche echo " -h, --help print usage message" 26*44704f69SBart Van Assche echo " -v, --verbose more verbose output" 27*44704f69SBart Van Assche echo " -w, --wait wait for each stop to complete" 28*44704f69SBart Van Assche echo "" 29*44704f69SBart Van Assche echo "Send SCSI START STOP UNIT command to stop each <device>" 30*44704f69SBart Van Assche} 31*44704f69SBart Van Assche 32*44704f69SBart Van Asscheopt="$1" 33*44704f69SBart Van Asschewhile test ! -z "$opt" -a -z "${opt##-*}"; do 34*44704f69SBart Van Assche opt=${opt#-} 35*44704f69SBart Van Assche case "$opt" in 36*44704f69SBart Van Assche h|-help) usage ; exit 0 ;; 37*44704f69SBart Van Assche v|-verbose) verbose="-v" ;; 38*44704f69SBart Van Assche w|-wait) immediate="" ;; 39*44704f69SBart Van Assche *) echo "Unknown option: -$opt " ; exit 1 ;; 40*44704f69SBart Van Assche esac 41*44704f69SBart Van Assche shift 42*44704f69SBart Van Assche opt="$1" 43*44704f69SBart Van Asschedone 44*44704f69SBart Van Assche 45*44704f69SBart Van Asscheif [ $# -lt 1 ] 46*44704f69SBart Van Assche then 47*44704f69SBart Van Assche usage 48*44704f69SBart Van Assche exit 1 49*44704f69SBart Van Asschefi 50*44704f69SBart Van Assche 51*44704f69SBart Van Asschefor i 52*44704f69SBart Van Asschedo 53*44704f69SBart Van Assche# Use '-r' (read-only) otherwise using a block device node 54*44704f69SBart Van Assche# (e.g. 'sg_start 0 /dev/sdb') can result in a change of state 55*44704f69SBart Van Assche# event causing the disk to spin up again immediately. 56*44704f69SBart Van Assche echo "sg_start -r $immediate 0 $verbose $i" 57*44704f69SBart Van Assche sg_start -r $immediate 0 $verbose $i 58*44704f69SBart Van Asschedone 59