mxhtspd-remove-disk

#!/bin/sh
#
# V2406C design a hotswap button for umount all the partitions and stop all the disks
#
file=`basename $0`
num=$1
field="\$1"

umount_partitions() {
	num=$1
	#Check partitions
	partitions=`mount | awk -F' ' "/media\/disk${num}/{print $field}" | xargs -n 10`
	if [ ! -z "$partitions" ] ; then
		echo "$file: WARNING! /media/disk${num}pn should be unmounted before disk is removed"
		echo "$file: Force to unmount them"
		for i in $partitions; do 
			/bin/umount $i 2> /dev/null
		done
	fi
}

#Stop the disks
stop_disk() {
	host=$1
	target=$2
	path=$3

	if [ ! -f /sys/class/scsi_host/$host/device/$target/$path/delete ] ; then
		echo "mxhtspd: WARNING! can't remove disk $num. It may has been removed before"
		exit 0
	else
		echo 1 > /sys/class/scsi_host/$host/device/$target/$path/delete
	fi
}

# Umount all the the partitions on SATA-A disk
if [ "$num" = "1" ] ; then
	umount_partitions $num
	# Stop the SATA-A disk
	host="host1"; 
	target="target1:0:0"; 
	path="1:0:0:0"
	stop_disk $host $target $path
fi

# Umount all the the partitions on SATA-B disk
if [ "$num" = "2" ] ; then
	umount_partitions $num
	# Stop the SATA-B disk
	host="host2";
	target="target2:0:0";
	path="2:0:0:0"
	stop_disk $host $target $path
fi

if [ "$num" = "3" ] || [ "$num" = "4" ] ; then
	disk_num=$(($num-2))
	echo "$file: WARNING! disk${disk_num} is busy."
	
	for i in 1 2 3;
	do
	        mxhtspd-setled $disk_num 0; sleep 1
        	mxhtspd-setled $disk_num 1; sleep 1
	done

	# show message to all currently logged in users
	echo "mxhtspd: Can't remove disk $disk_num. It is busy." | wall -n
else
	#Light success led
	for i in 1 2 3;
	do
		mxhtspd-setled $num 1; sleep 1
		mxhtspd-setled $num 0; sleep 1
	done

	# show message to all currently logged in users
	echo "mxhtspd: Remove disk $num is done." | wall -n
fi