ReMapLuns

#!/bin/ksh
#
#
#This script is to generate the decommission commands 
#Not official script, only for Geri
#
#

#######################################################
#                Preparation Steps                    #
#######################################################

#this is the directory, where the script is, so we use the modules from the exact same dir
BASE_DIR="/santeam/ntap"
Modules="$BASE_DIR/lib/Snapmirror_Module $BASE_DIR/lib/StandardNTAP_Module"
WORKDIR="/santeam/Decom"

MAIL_REC="sanadmin@citco.com" #
MAIL_SENDER="..."

myname="DecomLUN" #Place here the script name, you u can use it
version="0.1"
myfullname=$0 #Contains the full path where the script is running from

#MyFiles
GeneratedCommands="CommandsToRun"
Steps_DONE="__Steps_DONE__"

MyFiles=""

for module in $Modules;do
    if [ -s $module ]; then
        . $module
	else
		echo "The module library $module doesn't exist..."
		echo "Exiting..."
		exit 11
	fi
done
ColorInit

Usage ()
{
 #echo "I was invoked as: ${BOLD}$myfullname"
 echo
 echo "Synopsis:"
 echo "${NORM}   This script is to generate re-mapping scripts for LUNs${NORM}"
 echo "   ${BOLD}Version: $version$NORM"
 echo "   First you should create a folder in $WORKDIR folder, in a format of COXXXXXX_YYYY-MM-DD.\n   (Unix file system don't keep track when the folder was created, so it helps identify when the first steps were done)\n"
 echo "   Put the LUNs into a file called \"$YELLOW_F${BOLD}data$NORM\", in the following format:"
 echo "   ${BOLD}filer /vol/lunpath from-igroup to-igroup$NORM, for example:"
 echo "   ${BOLD}mia0sanfiler06 /vol/mia0vmsuapp24a/qt_mia0vmsuapp24a/mia0vmsuapp24a.lun mia0sgz08a mia0sgz32af${NORM}\n"
 echo "   If the LUN is mapped to multiple igroups, you need to place them in separate lines:"
 echo "   mia0sanfiler06 /vol/mia0vmsuapp24a/qt_mia0vmsuapp24a/mia0vmsuapp24a.lun mia0sgz08a mia0sgz32a"
 echo "   mia0sanfiler06 /vol/mia0vmsuapp24a/qt_mia0vmsuapp24a/mia0vmsuapp24a.lun mia0sgz08b mia0sgz32b\n"
 echo "   Once this is done, just run the script, it will generate all the commands, and place them into numbered scripts, and makes them executable"
 echo "   When you want to do the actual work, run the generated script."
 echo "   After each script finished, they will update a file called \"${BOLD}$Steps_DONE$NORM\", so later you can easily check what was done last time"
 echo "   After the last step done, a new file called \"${BOLD}__DONE__${NORM}\" will be created for the same reason, containing the actual date."
 echo "   Once all good, change dir to one level higher and move the folder to __DONE__/ in $WORKDIR"
 echo
 echo "Usage:"
 echo "   ${BOLD}$myname${NORM}"
 echo
 echo 
 echo "${BOLD}Examples:${NORM}"
 echo "   ${BOLD}${BLUE_F}$myname${NORM}\n"
 echo "   Don't forget to change directory where the \"data\" file is!"
}

#check the first parameter or no parameter
if [[ "$1" == "?" || "$1" == "-h" || "$1" == "-?" || "$1" == "-help" ]]
then
	echo "\nHelp was requested..."
	Usage
	echo "Exiting..."
	exit 1
fi


#######################################################
#                 Parameter Handling                  #
#######################################################
#Parameter handling starts here, we will check all the parameters one-by-one

#######################################################
#                 Parameter Handling                  #
#######################################################
#while getopts a:bc: opt
#do
#    case $opt in
#        a) VAR1=$OPTARG;;
#        b) VAR2="yes";;
#        c) VAR3=$OPTARG;;
#		*) Usage;exit 1;;
#	esac
#done


origfolder=`pwd`
#echo $origfolder
CONum=`pwd | awk -F/ '{print $4}' | awk -F_ '{print $1}'`


#checking the CO number format
if [[ `echo ${#CONum}` != 8 || "`echo $CONum | sed 's/......$//'`" != "CO"  ]];then
	if [[ "`echo $CONum | sed 's/\(.\)\(..*\)/\1/'`" != "R" ]];then
		echo "The folder name does not comply with the standards"
		Usage
		echo "Exiting..."
		exit 12
	fi
fi

CONum="${CONum}_`date -u +%H%M`"

#######################################################
#                     Procedures                      #
#######################################################


#######################################################
#                     Main Script                     #
#######################################################

if [ ! -e ./data ]; then
	echo "\nThe \"$YELLOW_F${BOLD}data$NORM\" file does NOT exist"
	Usage
	echo "Exiting..."
	exit 2
fi

echo "Generating script"
awk '{print "ssh " $1 " lun unmap " $2, $3}' ./data > $GeneratedCommands
echo 'echo "Step unmap has ran"'  >> $GeneratedCommands
echo 'echo "Step unmap has ran on `date`" >> '$Steps_DONE >> $GeneratedCommands

echo "Generating snapshot commands"
> $GeneratedCommands-temp
while read -r filer lun fromIgroup toIgroup;do
	vol=`echo $lun | awk -F/ '{print $3}'`
	echo "ssh $filer snap create -V $vol $CONum" >> $GeneratedCommands-temp
done < ./data
sort -u $GeneratedCommands-temp >> $GeneratedCommands
echo 'echo "Snapshots were taken"'  >> $GeneratedCommands
echo 'echo "Snapshots were taken at `date`" >> '$Steps_DONE >> $GeneratedCommands

echo "Generating remap commands"
awk '{print "ssh " $1 " lun map " $2, $4}' ./data >> $GeneratedCommands
echo 'echo "Step map has ran"'  >> $GeneratedCommands
echo 'echo "Step map has ran on `date`" >> '$Steps_DONE >> $GeneratedCommands

chmod 774 $GeneratedCommands
rm -f $GeneratedCommands-temp 2>/dev/null
echo "Command generation has been done"