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  • Как можно улучшить данный backup-скрипт?

    @Flaxing
    Для бэкапа виртуальных машин на ESX используем этот скрипт, возможно найдете, что-то для себя, выглядит довольно слажено:
    ghettoVCB.sh (осторожно большой)
    # Author: William Lam
    # Created Date: 11/17/2008
    # http://www.virtuallyghetto.com/
    # http://communities.vmware.com/docs/DOC-8760
    ##################################################################
    
    # directory that all VM backups should go (e.g. /vmfs/volumes/SAN_LUN1/mybackupdir)
    VM_BACKUP_VOLUME=/vmfs/volumes/dlgCore-NFS-bigboi.VM-Backups/WILLIAM_BACKUPS
    
    # Format output of VMDK backup
    # zeroedthick
    # 2gbsparse
    # thin
    # eagerzeroedthick
    DISK_BACKUP_FORMAT=thin
    
    # Number of backups for a given VM before deleting
    VM_BACKUP_ROTATION_COUNT=3
    
    # Shutdown guestOS prior to running backups and power them back on afterwards
    # This feature assumes VMware Tools are installed, else they will not power down and loop forever
    # 1=on, 0 =off
    POWER_VM_DOWN_BEFORE_BACKUP=0
    
    # enable shutdown code 1=on, 0 = off
    ENABLE_HARD_POWER_OFF=0
    
    # if the above flag "ENABLE_HARD_POWER_OFF "is set to 1, then will look at this flag which is the # of iterations
    # the script will wait before executing a hard power off, this will be a multiple of 60seconds 
    # (e.g) = 3, which means this will wait up to 180seconds (3min) before it just powers off the VM
    ITER_TO_WAIT_SHUTDOWN=3
    
    # Number of iterations the script will wait before giving up on powering down the VM and ignoring it for backup
    # this will be a multiple of 60 (e.g) = 5, which means this will wait up to 300secs (5min) before it gives up
    POWER_DOWN_TIMEOUT=5
    
    # enable compression with gzip+tar 1=on, 0=off
    ENABLE_COMPRESSION=0
    
    ############################
    ####### NEW PARAMS #########
    ############################
    
    # Include VMs memory when taking snapshot
    VM_SNAPSHOT_MEMORY=0
    
    # Quiesce VM when taking snapshot (requires VMware Tools to be installed)
    VM_SNAPSHOT_QUIESCE=0
    
    ##########################################################
    # NON-PERSISTENT NFS-BACKUP ONLY
    # 
    # ENABLE NON PERSISTENT NFS BACKUP 1=on, 0=off
    
    ENABLE_NON_PERSISTENT_NFS=0
    
    # umount NFS datastore after backup is complete 1=yes, 0=no
    UNMOUNT_NFS=0
    
    # IP Address of NFS Server
    NFS_SERVER=172.51.0.192
    
    # Path of exported folder residing on NFS Server (e.g. /some/mount/point )
    NFS_MOUNT=/upload
    
    # Non-persistent NFS datastore display name of choice
    NFS_LOCAL_NAME=backup
    
    # Name of backup directory for VMs residing on the NFS volume
    NFS_VM_BACKUP_DIR=mybackups 
    
    ############################
    ######### EMAIL ############
    ############################ 
    
    # Email debug 1=yes, 0=no
    EMAIL_DEBUG=0
    
    # Email log 1=yes, 0=no 
    EMAIL_LOG=0
    
    # Email Delay Interval from NC (netcat) - default 1
    EMAIL_DELAY_INTERVAL=1
    
    # Email SMTP server
    EMAIL_SERVER=auroa.primp-industries.com
    
    # Email SMTP server port
    EMAIL_SERVER_PORT=25
    
    # Email FROM
    EMAIL_FROM=root@ghettoVCB
    
    # Email RCPT
    EMAIL_TO=auroa@primp-industries.com
    
    ########################## DO NOT MODIFY PAST THIS LINE ##########################
    
    # RSYNC LINK 1=yes, 0 = no
    RSYNC_LINK=0
    
    LOG_LEVEL="info"
    VMDK_FILES_TO_BACKUP="all"
    # default 15min timeout
    SNAPSHOT_TIMEOUT=15
    
    LAST_MODIFIED_DATE=2011_11_19
    VERSION=1
    VERSION_STRING=${LAST_MODIFIED_DATE}_${VERSION}
    
    # Directory naming convention for backup rotations (please ensure there are no spaces!)
    VM_BACKUP_DIR_NAMING_CONVENTION="$(date +%F_%H-%M-%S)"
    
    printUsage() {
            echo "###############################################################################"
            echo "#"
            echo "# ghettoVCB for ESX/ESXi 3.5, 4.x+ and 5.0"
            echo "# Author: William Lam"
            echo "# http://www.virtuallyghetto.com/"
    	echo "# Documentation: http://communities.vmware.com/docs/DOC-8760"
            echo "# Created: 11/17/2008"
            echo "# Last modified: ${LAST_MODIFIED_DATE} Version ${VERSION}"
            echo "#"
            echo "###############################################################################"
            echo
            echo "Usage: $0 -f [VM_BACKUP_UP_LIST] -c [VM_CONFIG_DIR] -l [LOG_FILE] -d [DEBUG_LEVEL] -g [GLOBAL_CONF] -e [VM_EXCLUSION_LIST]"
            echo
            echo "OPTIONS:"
    	echo "   -a     Backup all VMs on host"
            echo "   -f     List of VMs to backup"
    	echo "   -c     VM configuration directory for VM backups"
    	echo "   -g     Path to global ghettoVCB configuration file"
            echo "   -l     File to output logging"
    	echo "   -d     Debug level [info|debug|dryrun] (default: info)"
            echo
            echo "(e.g.)"
            echo -e "\nBackup VMs stored in a list"
            echo -e "\t$0 -f vms_to_backup"
    	echo -e "\nBackup all VMs residing on this host"
            echo -e "\t$0 -a"
    	echo -e "\nBackup all VMs residing on this host except for the VMs in the exclusion list"
            echo -e "\t$0 -a -e vm_exclusion_list"
    	echo -e "\nBackup VMs based on specific configuration located in directory"
            echo -e "\t$0 -f vms_to_backup -c vm_backup_configs"
    	echo -e "\nBackup VMs using global ghettoVCB configuration file"
            echo -e "\t$0 -f vms_to_backup -g /global/ghettoVCB.conf"
            echo -e "\nOutput will log to /tmp/ghettoVCB.log (consider logging to local or remote datastore to persist logs)"
            echo -e "\t$0 -f vms_to_backup -l /vmfs/volume/local-storage/ghettoVCB.log"
    	echo -e "\nDry run (no backup will take place)"
            echo -e "\t$0 -f vms_to_backup -d dryrun"
            echo
            exit 1
    }
    
    logger() {
    	LOG_TYPE=$1
            MSG=$2
    
    	if [[ "${LOG_LEVEL}" == "debug" ]] && [[ "${LOG_TYPE}" == "debug" ]] || [[ "${LOG_TYPE}" == "info" ]] || [[ "${LOG_TYPE}" == "dryrun" ]]; then
    		TIME=$(date +%F" "%H:%M:%S)
           		if [ "${LOG_TO_STDOUT}" -eq 1 ]; then
                   		echo -e "${TIME} -- ${LOG_TYPE}: ${MSG}"
    		fi
            	if [ -n "${LOG_OUTPUT}" ]; then
           	        	echo -e "${TIME} -- ${LOG_TYPE}: ${MSG}" >> "${LOG_OUTPUT}"
    		fi
    
    		if [ "${EMAIL_LOG}" -eq 1 ]; then
    			echo -ne "${TIME} -- ${LOG_TYPE}: ${MSG}\r\n" >> "${EMAIL_LOG_OUTPUT}"		
    		fi
    	fi
    }
    
    sanityCheck() {
            NUM_OF_ARGS=$1
    
    	if [ "${USE_GLOBAL_CONF}" -eq 1 ]; then
                    reConfigureGhettoVCBConfiguration "${GLOBAL_CONF}"
            fi
    
    	#always log to STDOUT, use "> /dev/null" to ignore output
    	LOG_TO_STDOUT=1
    	
    	#if no logfile then provide default logfile in /tmp
            if [ -z "${LOG_OUTPUT}" ]; then
    		LOG_OUTPUT="/tmp/ghettoVCB-$(date +%F_%H-%M-%S).log"
                    echo "Logging output to \"${LOG_OUTPUT}\" ..."
            fi
            touch "${LOG_OUTPUT}"
            # REDIRECT is used by the "tail" trick, use REDIRECT=/dev/null to redirect vmkfstool to STDOUT only
            REDIRECT=${LOG_OUTPUT}
    
    	if [[ ${NUM_OF_ARGS} -lt 1 ]] || [[ ${NUM_OF_ARGS} -gt 12 ]]; then
    		logger "info" "ERROR: Incorrect number of arguments!"
                    printUsage
            fi
    
    	if [[ ! -f "${VM_FILE}" ]] && [[ "${USE_VM_CONF}" -eq 0 ]] && [[ "${BACKUP_ALL_VMS}" -eq 0 ]]; then
    		logger "info" "ERROR: \"${VM_FILE}\" is not valid VM input file!"
    		printUsage
    	fi
    
    	if [[ ! -f "${VM_EXCLUSION_FILE}" ]] && [[ "${EXCLUDE_SOME_VMS}" -eq 1 ]]; then
    		logger "info" "ERROR: \"${VM_EXCLUSION_FILE}\" is not valid VM exclusion input file!"
    		printUsage
    	fi
    
     	if [[ ! -d "${CONFIG_DIR}" ]] && [[ "${USE_VM_CONF}" -eq 1 ]]; then
    		logger "info" "ERROR: \"${CONFIG_DIR}\" is not valid directory!"
                    printUsage
           	fi
    
    	if [[ ! -f "${GLOBAL_CONF}" ]] && [[ "${USE_GLOBAL_CONF}" -eq 1 ]]; then
    		logger "info" "ERROR: \"${GLOBAL_CONF}\" is not valid global configuration file!"
                    printUsage
            fi
    
    	if [ -f /usr/bin/vmware-vim-cmd ]; then
                    VMWARE_CMD=/usr/bin/vmware-vim-cmd
                    VMKFSTOOLS_CMD=/usr/sbin/vmkfstools
            elif [ -f /bin/vim-cmd ]; then
                    VMWARE_CMD=/bin/vim-cmd
                    VMKFSTOOLS_CMD=/sbin/vmkfstools
            else
                    logger "info" "ERROR: Unable to locate *vimsh*! You're not running ESX(i) 3.5+, 4.x+ or 5.0!"
                    echo "ERROR: Unable to locate *vimsh*! You're not running ESX(i) 3.5+, 4.x+ or 5.0!"
                    exit 1
            fi
    
            ESX_VERSION=$(vmware -v | awk '{print $3}')
    	if [[ "${ESX_VERSION}" == "5.0.0" ]]; then
    		VER=5
            elif [[ "${ESX_VERSION}" == "4.0.0" ]] || [[ "${ESX_VERSION}" == "4.1.0" ]]; then
                    VER=4
            else
                    ESX_VERSION=$(vmware -v | awk '{print $4}')
                    if [[ "${ESX_VERSION}" == "3.5.0" ]] || [[ "${ESX_VERSION}" == "3i" ]]; then
                            VER=3
                    else
                            echo "You're not running ESX(i) 3.5, 4.x, 5.x!"
                            exit 1
                    fi
            fi
    
    	NEW_VIMCMD_SNAPSHOT="no"
    	${VMWARE_CMD} vmsvc/snapshot.remove | grep "snapshotId" > /dev/null 2>&1
    	if [ $? -eq 0 ]; then
    		NEW_VIMCMD_SNAPSHOT="yes"
    	fi
    
    	if [[ "${EMAIL_LOG}" -eq 1 ]] && [[ -f /usr/bin/nc ]] || [[ -f /bin/nc ]]; then
    		if [ -f /usr/bin/nc ]; then
    			NC_BIN=/usr/bin/nc
    		elif [ -f /bin/nc ]; then 
    			NC_BIN=/bin/nc
    		fi
            else 
    		EMAIL_LOG=0
    	fi
    
            if [ ! $(whoami) == "root" ]; then
                    logger "info" "This script needs to be executed by \"root\"!"
    		echo "ERROR: This script needs to be executed by \"root\"!"
                    exit 1
            fi
    }
    
    startTimer() {
            START_TIME=$(date)
            S_TIME=$(date +%s)
    }
    
    endTimer() {
            END_TIME=$(date)
            E_TIME=$(date +%s)
            DURATION=$(echo $((E_TIME - S_TIME)))
    
            #calculate overall completion time
            if [ ${DURATION} -le 60 ]; then
                    logger "info" "Backup Duration: ${DURATION} Seconds"
            else
                    logger "info" "Backup Duration: $(awk 'BEGIN{ printf "%.2f\n", '${DURATION}'/60}') Minutes"
            fi
    }
    
    captureDefaultConfigurations() {
    	DEFAULT_VM_BACKUP_VOLUME="${VM_BACKUP_VOLUME}"
    	DEFAULT_DISK_BACKUP_FORMAT="${DISK_BACKUP_FORMAT}"
    	DEFAULT_VM_BACKUP_ROTATION_COUNT="${VM_BACKUP_ROTATION_COUNT}"
    	DEFAULT_POWER_VM_DOWN_BEFORE_BACKUP="${POWER_VM_DOWN_BEFORE_BACKUP}"
    	DEFAULT_ENABLE_HARD_POWER_OFF="${ENABLE_HARD_POWER_OFF}"
    	DEFAULT_ITER_TO_WAIT_SHUTDOWN="${ITER_TO_WAIT_SHUTDOWN}"
    	DEFAULT_POWER_DOWN_TIMEOUT="${POWER_DOWN_TIMEOUT}"
    	DEFAULT_SNAPSHOT_TIMEOUT="${SNAPSHOT_TIMEOUT}"
    	DEFAULT_ENABLE_COMPRESSION="${ENABLE_COMPRESSION}"
    	DEFAULT_VM_SNAPSHOT_MEMORY="${VM_SNAPSHOT_MEMORY}"
    	DEFAULT_VM_SNAPSHOT_QUIESCE="${VM_SNAPSHOT_QUIESCE}"
    	DEFAULT_VMDK_FILES_TO_BACKUP="${VMDK_FILES_TO_BACKUP}"
    	DEFAULT_EMAIL_LOG="${EMAIL_LOG}"
    	DEFAULT_EMAIL_DEBUG="${EMAIL_DEBUG}"
    }
    
    useDefaultConfigurations() {
    	VM_BACKUP_VOLUME="${DEFAULT_VM_BACKUP_VOLUME}"
    	DISK_BACKUP_FORMAT="${DEFAULT_DISK_BACKUP_FORMAT}"
    	VM_BACKUP_ROTATION_COUNT="${DEFAULT_VM_BACKUP_ROTATION_COUNT}"
    	POWER_VM_DOWN_BEFORE_BACKUP="${DEFAULT_POWER_VM_DOWN_BEFORE_BACKUP}"
    	ENABLE_HARD_POWER_OFF="${DEFAULT_ENABLE_HARD_POWER_OFF}"
    	ITER_TO_WAIT_SHUTDOWN="${DEFAULT_ITER_TO_WAIT_SHUTDOWN}"
    	POWER_DOWN_TIMEOUT="${DEFAULT_POWER_DOWN_TIMEOUT}"
    	SNAPSHOT_TIMEOUT="${DEFAULT_SNAPSHOT_TIMEOUT}"
    	ENABLE_COMPRESSION="${DEFAULT_ENABLE_COMPRESSION}"
    	VM_SNAPSHOT_MEMORY="${DEFAULT_VM_SNAPSHOT_MEMORY}"
    	VM_SNAPSHOT_QUIESCE="${DEFAULT_VM_SNAPSHOT_QUIESCE}"
    	VMDK_FILES_TO_BACKUP="all"
    	EMAIL_LOG=0
    	EMAIL_DEBUG=0
    }
    
    reConfigureGhettoVCBConfiguration() {
    	GLOBAL_CONF=$1
    	
    	if [ -f "${GLOBAL_CONF}" ]; then
                    . "${GLOBAL_CONF}"
            else
                    useDefaultConfigurations
            fi
    }
    
    reConfigureBackupParam() {
            VM=$1
    
            if [ -e "${CONFIG_DIR}/${VM}" ]; then
                    logger "info" "CONFIG - USING CONFIGURATION FILE = ${CONFIG_DIR}/${VM}"
                    . "${CONFIG_DIR}/${VM}"
            else
                    useDefaultConfigurations
            fi
    }
    
    dumpHostInfo() {
    	VERSION=$(vmware -v)
    	logger "debug" "HOST VERSION: ${VERSION}"
    	echo ${VERSION} | grep "Server 3i" > /dev/null 2>&1
    	if [ $? -eq 1 ]; then
    		logger "debug" "HOST LEVEL: $(vmware -l)"
    	fi
    	logger "debug" "HOSTNAME: $(hostname)\n"
    }
    
    findVMDK() {
            VMDK_TO_SEARCH_FOR=$1
    
    	#if [ "${USE_VM_CONF}" -eq 1 ]; then
    		logger "debug" "findVMDK() - Searching for VMDK: \"${VMDK_TO_SEARCH_FOR}\" to backup"
    
    		OLD_IFS2="${IFS}"
            	IFS=","
    	        for k in ${VMDK_FILES_TO_BACKUP}
            	do
                    	VMDK_FILE=$(echo $k | sed -e 's/^[[:blank:]]*//;s/[[:blank:]]*$//')
    		        if [ "${VMDK_FILE}" == "${VMDK_TO_SEARCH_FOR}" ]; then
    				logger "debug" "findVMDK() - Found VMDK! - \"${VMDK_TO_SEARCH_FOR}\" to backup"
            	                isVMDKFound=1
    			fi	
    	        done
    		IFS="${OLD_IFS2}"
    	#fi
    }
    
    getVMDKs() {
    	#get all VMDKs listed in .vmx file
            VMDKS_FOUND=$(grep -iE '(scsi|ide)' "${VMX_PATH}" | grep -i fileName | awk -F " " '{print $1}')
    
            TMP_IFS=${IFS}
            IFS=${ORIG_IFS}
            #loop through each disk and verify that it's currently present and create array of valid VMDKS
            for DISK in ${VMDKS_FOUND};
            do
            	#extract the SCSI ID and use it to check for valid vmdk disk
                    SCSI_ID=$(echo ${DISK%%.*})
                    grep -i "${SCSI_ID}.present" "${VMX_PATH}" | grep -i "true" > /dev/null 2>&1
                    #if valid, then we use the vmdk file
                    if [ $? -eq 0 ]; then
    			#verify disk is not independent
    			grep -i "${SCSI_ID}.mode" "${VMX_PATH}" | grep -i "independent" > /dev/null 2>&1 
    			if [ $? -eq 1 ]; then
    	                	grep -i "${SCSI_ID}.deviceType" "${VMX_PATH}" | grep -i "scsi-hardDisk" > /dev/null 2>&1
            	                #if we find the device type is of scsi-disk, then proceed
                    	        if [ $? -eq 0 ]; then
                            		DISK=$(grep -i ${SCSI_ID}.fileName "${VMX_PATH}" | awk -F "\"" '{print $2}')
    					echo "${DISK}" | grep "\/vmfs\/volumes" > /dev/null 2>&1
    					if [ $? -eq 0 ]; then
    						DISK_SIZE_IN_SECTORS=$(cat "${DISK}" | grep "VMFS" | grep ".vmdk" | awk '{print $2}')
    					else
    						DISK_SIZE_IN_SECTORS=$(cat "${VMX_DIR}/${DISK}" | grep "VMFS" | grep ".vmdk" | awk '{print $2}')
    					fi
    					DISK_SIZE=$(echo "${DISK_SIZE_IN_SECTORS}" | awk '{printf "%.0f\n",$1*512/1024/1024/1024}')
                                    	VMDKS="${DISK}###${DISK_SIZE}:${VMDKS}"
    					TOTAL_VM_SIZE=$((TOTAL_VM_SIZE+DISK_SIZE))
    	                        else
            	                        #if the deviceType is NULL for IDE which it is, thanks for the inconsistency VMware
                    	                #we'll do one more level of verification by checking to see if an ext. of .vmdk exists
                            	        #since we can not rely on the deviceType showing "ide-hardDisk"
                                    	grep -i ${SCSI_ID}.fileName "${VMX_PATH}" | grep -i ".vmdk" > /dev/null 2>&1
    	                                if [ $? -eq 0 ]; then
            	                	        DISK=$(grep -i ${SCSI_ID}.fileName "${VMX_PATH}" | awk -F "\"" '{print $2}')
    						echo "${DISK}" | grep "\/vmfs\/volumes" > /dev/null 2>&1
    						if [ $? -eq 0 ]; then
    							DISK_SIZE_IN_SECTORS=$(cat "${DISK}" | grep "VMFS" | grep ".vmdk" | awk '{print $2}')
    						else
    							DISK_SIZE_IN_SECTORS=$(cat "${VMX_DIR}/${DISK}" | grep "VMFS" | grep ".vmdk" | awk '{print $2}')
    						fi
    						DISK_SIZE=$(echo "${DISK_SIZE_IN_SECTORS}" | awk '{printf "%.0f\n",$1*512/1024/1024/1024}')
                    	                        VMDKS="${DISK}###${DISK_SIZE}:${VMDKS}"
    						TOTAL_VM_SIZE=$((TOTAL_VM_SIZE_IN+DISK_SIZE))
                            	        fi
                            	fi
    			else
    				#independent disks are not affected by snapshots, hence they can not be backed up
    				DISK=$(grep -i ${SCSI_ID}.fileName "${VMX_PATH}" | awk -F "\"" '{print $2}')
    				echo "${DISK}" | grep "\/vmfs\/volumes" > /dev/null 2>&1
    				if [ $? -eq 0 ]; then
    					DISK_SIZE_IN_SECTORS=$(cat "${DISK}" | grep "VMFS" | grep ".vmdk" | awk '{print $2}')
    				else
    					DISK_SIZE_IN_SECTORS=$(cat "${VMX_DIR}/${DISK}" | grep "VMFS" | grep ".vmdk" | awk '{print $2}')
    				fi
    				DISK_SIZE=$(echo "${DISK_SIZE_IN_SECTORS}" | awk '{printf "%.0f\n",$1*512/1024/1024/1024}')
    				INDEP_VMDKS="${DISK}###${DISK_SIZE}:${INDEP_VMDKS}"
    			fi
                    fi
    	done
            IFS=${TMP_IFS}
    	logger "debug" "getVMDKs() - ${VMDKS}"
    }
    
    dumpVMConfigurations() {
    	logger "info" "CONFIG - VERSION = ${VERSION_STRING}"
    	logger "info" "CONFIG - GHETTOVCB_PID = ${GHETTOVCB_PID}"
    	logger "info" "CONFIG - VM_BACKUP_VOLUME = ${VM_BACKUP_VOLUME}"
    	if [ "${ENABLE_NON_PERSISTENT_NFS}" -eq 1 ]; then
    		logger "info" "CONFIG - ENABLE_NON_PERSISTENT_NFS = ${ENABLE_NON_PERSISTENT_NFS}"
    		logger "info" "CONFIG - UNMOUNT_NFS = ${UNMOUNT_NFS}"
    		logger "info" "CONFIG - NFS_SERVER = ${NFS_SERVER}"
    		logger "info" "CONFIG - NFS_MOUNT = ${NFS_MOUNT}"
    	fi
            logger "info" "CONFIG - VM_BACKUP_ROTATION_COUNT = ${VM_BACKUP_ROTATION_COUNT}"
    	logger "info" "CONFIG - VM_BACKUP_DIR_NAMING_CONVENTION = ${VM_BACKUP_DIR_NAMING_CONVENTION}"
            logger "info" "CONFIG - DISK_BACKUP_FORMAT = ${DISK_BACKUP_FORMAT}"
            logger "info" "CONFIG - POWER_VM_DOWN_BEFORE_BACKUP = ${POWER_VM_DOWN_BEFORE_BACKUP}"
            logger "info" "CONFIG - ENABLE_HARD_POWER_OFF = ${ENABLE_HARD_POWER_OFF}"
    	logger "info" "CONFIG - ITER_TO_WAIT_SHUTDOWN = ${ITER_TO_WAIT_SHUTDOWN}"
    	logger "info" "CONFIG - POWER_DOWN_TIMEOUT = ${POWER_DOWN_TIMEOUT}"
    	logger "info" "CONFIG - SNAPSHOT_TIMEOUT = ${SNAPSHOT_TIMEOUT}"
            logger "info" "CONFIG - LOG_LEVEL = ${LOG_LEVEL}"
    	logger "info" "CONFIG - BACKUP_LOG_OUTPUT = ${LOG_OUTPUT}"
            logger "info" "CONFIG - VM_SNAPSHOT_MEMORY = ${VM_SNAPSHOT_MEMORY}"
            logger "info" "CONFIG - VM_SNAPSHOT_QUIESCE = ${VM_SNAPSHOT_QUIESCE}"
            logger "info" "CONFIG - VMDK_FILES_TO_BACKUP = ${VMDK_FILES_TO_BACKUP}"
    	logger "info" "CONFIG - EMAIL_LOG = ${EMAIL_LOG}"
    	if [ "${EMAIL_LOG}" -eq 1 ]; then
    		logger "info" "CONFIG - EMAIL_DEBUG = ${EMAIL_DEBUG}"
    		logger "info" "CONFIG - EMAIL_SERVER = ${EMAIL_SERVER}"
    		logger "info" "CONFIG - EMAIL_SERVER_PORT = ${EMAIL_SERVER_PORT}"
    		logger "info" "CONFIG - EMAIL_DELAY_INTERVAL = ${EMAIL_DELAY_INTERVAL}"
    		logger "info" "CONFIG - EMAIL_FROM = ${EMAIL_FROM}"
    		logger "info" "CONFIG - EMAIL_TO = ${EMAIL_TO}"
    	fi
    	logger "info" ""
    }
    
    checkVMBackupRotation() {
    	local BACKUP_DIR_PATH=$1
    	local VM_TO_SEARCH_FOR=$2
    
    	#default rotation if variable is not defined
            if [ -z ${VM_BACKUP_ROTATION_COUNT} ]; then
                    VM_BACKUP_ROTATION_COUNT=1
            fi
    
    	LIST_BACKUPS=$(ls -t "${BACKUP_DIR_PATH}" | grep "${VM_TO_SEARCH_FOR}-[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}_[0-9]\{2\}-[0-9]\{2\}-[0-9]\{2\}")
    	BACKUPS_TO_KEEP=$(ls -t "${BACKUP_DIR_PATH}" | grep "${VM_TO_SEARCH_FOR}-[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}_[0-9]\{2\}-[0-9]\{2\}-[0-9]\{2\}" | head -"${VM_BACKUP_ROTATION_COUNT}")
    
    	ORIG_IFS=${IFS}
            IFS='
    '
            for i in ${LIST_BACKUPS};
            do
                    FOUND=0
                    for j in ${BACKUPS_TO_KEEP};
                    do
                            if [ $i == $j ]; then
                                    FOUND=1
                            fi
                    done
    
                    if [ $FOUND -eq 0 ]; then
    			logger "debug" "Removing $BACKUP_DIR_PATH/$i"
    			rm -rf "$BACKUP_DIR_PATH/$i"
    
    			#NFS I/O error handling hack
    			if [ $? -ne 0 ]; then
    				NFS_IO_HACK_COUNTER=0
    				NFS_IO_HACK_STATUS=0
    				NFS_IO_HACK_FILECHECK="$BACKUP_DIR_PATH/nfs_io.check"		
    
    				while [ "${NFS_IO_HACK_STATUS}" -eq 0 -a "${NFS_IO_HACK_COUNTER}" -lt 60 ]; 
    				do
    					sleep 1
    					NFS_IO_HACK_COUNTER=$((NFS_IO_HACK_COUNTER+1))
    					touch "${NFS_IO_HACK_FILECHECK}"
    				
    					if [ $? -eq 0 ]; then
    						NFS_IO_HACK_STATUS=1
    					fi	
    				done
    
    				rm -rf "${NFS_IO_HACK_FILECHECK}"
    
    				if [ "${NFS_IO_HACK_STATUS}"  -eq 1 ]; then
    					logger "info" "Slept ${NFS_IO_HACK_COUNTER} seconds to work around NFS I/O error"
    				else 
    					logger "info" "Slept ${NFS_IO_HACK_COUNTER} seconds but failed work around for NFS I/O error"
    				fi
    			fi
                    fi
            done
    	IFS=${ORIG_IFS}
    }
    
    storageInfo() {
    	SECTION=$1
    
    	#SOURCE DATASTORE
            SRC_DATASTORE_CAPACITY=$($VMWARE_CMD hostsvc/datastore/info "${VMFS_VOLUME}" | grep -i "capacity" | awk '{print $3}' | sed 's/,//g')
            SRC_DATASTORE_FREE=$($VMWARE_CMD hostsvc/datastore/info "${VMFS_VOLUME}" | grep -i "freespace" | awk '{print $3}' | sed 's/,//g')
            SRC_DATASTORE_BLOCKSIZE=$($VMWARE_CMD hostsvc/datastore/info "${VMFS_VOLUME}" | grep -i blockSizeMb | awk '{print $3}' | sed 's/,//g')
            if [ -z ${SRC_DATASTORE_BLOCKSIZE} ]; then
            	SRC_DATASTORE_BLOCKSIZE="NA"
                    SRC_DATASTORE_MAX_FILE_SIZE="NA"
            else
            	case ${SRC_DATASTORE_BLOCKSIZE} in
                    	1)SRC_DATASTORE_MAX_FILE_SIZE="256 GB";;
                            2)SRC_DATASTORE_MAX_FILE_SIZE="512 GB";;
                            4)SRC_DATASTORE_MAX_FILE_SIZE="1024 GB";;
                            8)SRC_DATASTORE_MAX_FILE_SIZE="2048 GB";;
                    esac
            fi
            SRC_DATASTORE_CAPACITY_GB=$(echo "${SRC_DATASTORE_CAPACITY}" | awk '{printf "%.1f\n",$1/1024/1024/1024}')
            SRC_DATASTORE_FREE_GB=$(echo "${SRC_DATASTORE_FREE}" | awk '{printf "%.1f\n",$1/1024/1024/1024}')
    
    	#DESTINATION DATASTORE
            DST_VOL_1=$(echo "${VM_BACKUP_VOLUME#/*/*/}")
            DST_DATASTORE=$(echo "${DST_VOL_1%%/*}")
            DST_DATASTORE_CAPACITY=$($VMWARE_CMD hostsvc/datastore/info "${DST_DATASTORE}" | grep -i "capacity" | awk '{print $3}' | sed 's/,//g')
            DST_DATASTORE_FREE=$($VMWARE_CMD hostsvc/datastore/info "${DST_DATASTORE}" | grep -i "freespace" | awk '{print $3}' | sed 's/,//g')
            DST_DATASTORE_BLOCKSIZE=$($VMWARE_CMD hostsvc/datastore/info "${DST_DATASTORE}" | grep -i blockSizeMb | awk '{print $3}' | sed 's/,//g')
           	if [ -z ${DST_DATASTORE_BLOCKSIZE} ]; then
                   	DST_DATASTORE_BLOCKSIZE="NA"
                    DST_DATASTORE_MAX_FILE_SIZE="NA"
           	else
                    case ${DST_DATASTORE_BLOCKSIZE} in
            	        1)DST_DATASTORE_MAX_FILE_SIZE="256 GB";;
                            2)DST_DATASTORE_MAX_FILE_SIZE="512 GB";;
                            4)DST_DATASTORE_MAX_FILE_SIZE="1024 GB";;
                            8)DST_DATASTORE_MAX_FILE_SIZE="2048 GB";;
                    esac
           	fi
           	DST_DATASTORE_CAPACITY_GB=$(echo "${DST_DATASTORE_CAPACITY}" | awk '{printf "%.1f\n",$1/1024/1024/1024}')
           	DST_DATASTORE_FREE_GB=$(echo "${DST_DATASTORE_FREE}" | awk '{printf "%.1f\n",$1/1024/1024/1024}')
    
            logger "debug" "Storage Information ${SECTION} backup: "
            logger "debug" "SRC_DATASTORE: ${VMFS_VOLUME}"
            logger "debug" "SRC_DATASTORE_CAPACITY: ${SRC_DATASTORE_CAPACITY_GB} GB"
            logger "debug" "SRC_DATASTORE_FREE: ${SRC_DATASTORE_FREE_GB} GB"
            logger "debug" "SRC_DATASTORE_BLOCKSIZE: ${SRC_DATASTORE_BLOCKSIZE}"
            logger "debug" "SRC_DATASTORE_MAX_FILE_SIZE: ${SRC_DATASTORE_MAX_FILE_SIZE}"
            logger "debug" ""
            logger "debug" "DST_DATASTORE: ${DST_DATASTORE}"
            logger "debug" "DST_DATASTORE_CAPACITY: ${DST_DATASTORE_CAPACITY_GB} GB"
            logger "debug" "DST_DATASTORE_FREE: ${DST_DATASTORE_FREE_GB} GB"
            logger "debug" "DST_DATASTORE_BLOCKSIZE: ${DST_DATASTORE_BLOCKSIZE}"
            logger "debug" "DST_DATASTORE_MAX_FILE_SIZE: ${DST_DATASTORE_MAX_FILE_SIZE}"
            if [[ "${SRC_DATASTORE_BLOCKSIZE}" != "NA" ]] && [[ "${DST_DATASTORE_BLOCKSIZE}" != "NA" ]]; then
            	if [ "${SRC_DATASTORE_BLOCKSIZE}" -lt "${DST_DATASTORE_BLOCKSIZE}" ]; then
                    	logger "debug" ""
                            logger "debug" "SRC VMFS blocksze of ${SRC_DATASTORE_BLOCKSIZE}MB is less than DST VMFS blocksize of ${DST_DATASTORE_BLOCKSIZE}MB which can be an issue for VM snapshots"
                    fi
            fi
    	logger "debug" ""
    }
    
    ghettoVCB() {
    	VM_INPUT=$1
    	VM_OK=0
    	VM_FAILED=0
    	VMDK_FAILED=0
    
    	dumpHostInfo
    
            if [ ${ENABLE_NON_PERSISTENT_NFS} -eq 1 ]; then
                    VM_BACKUP_VOLUME="/vmfs/volumes/${NFS_LOCAL_NAME}/${NFS_VM_BACKUP_DIR}"
                    if [ "${LOG_LEVEL}" !=  "dryrun" ]; then
                            #1 = readonly
                            #0 = readwrite
                            logger "debug" "Mounting NFS: ${NFS_SERVER}:${NFS_MOUNT} to /vmfs/volume/${NFS_LOCAL_NAME}"
    			${VMWARE_CMD} hostsvc/datastore/nas_create "${NFS_LOCAL_NAME}" "${NFS_SERVER}" "${NFS_MOUNT}" 0
                    fi
            fi
    
    	captureDefaultConfigurations
    
    	if [ "${USE_GLOBAL_CONF}" -eq 1 ]; then
    		logger "info" "CONFIG - USING GLOBAL GHETTOVCB CONFIGURATION FILE = ${GLOBAL_CONF}"
    	fi
    
    	if [ "${USE_VM_CONF}" -eq 0 ]; then
    		dumpVMConfigurations
    	fi
    
    	#dump out all virtual machines allowing for spaces now
    	${VMWARE_CMD} vmsvc/getallvms | sed 's/[[:blank:]]\{3,\}/   /g' | awk -F'   ' '{print "\""$1"\";\""$2"\";\""$3"\""}' |  sed 's/\] /\]\";\"/g' | sed '1,1d' > /tmp/vms_list
    
    	if [ "${BACKUP_ALL_VMS}" -eq 1 ]; then
    		${VMWARE_CMD} vmsvc/getallvms | sed 's/[[:blank:]]\{3,\}/   /g' | awk -F'   ' '{print ""$2""}' | sed '1,1d' | sed '/^$/d' > "${VM_INPUT}"
    	fi
    
    	ORIG_IFS=${IFS}
    	IFS='
    '
    	for VM_NAME in $(cat "${VM_INPUT}" | grep -v "#" | sed '/^$/d' | sed -e 's/^[[:blank:]]*//;s/[[:blank:]]*$//');
            do
    		IGNORE_VM=0
    		if [ "${EXCLUDE_SOME_VMS}" -eq 1 ]; then
    			grep -E "${VM_NAME}" "${VM_EXCLUSION_FILE}" > /dev/null 2>&1
    			if [ $? -eq 0 ]; then
    				IGNORE_VM=1
    			fi
    		fi
    	
    		VM_ID=$(grep -E "\"${VM_NAME}\"" /tmp/vms_list | awk -F ";" '{print $1}' | sed 's/"//g')
    
    		#ensure default value if one is not selected or variable is null
                    if [ -z ${VM_BACKUP_DIR_NAMING_CONVENTION} ]; then
                            VM_BACKUP_DIR_NAMING_CONVENTION="$(date +%F_%k-%M-%S)"
                    fi
    
    		if [[ "${USE_VM_CONF}" -eq 1 ]] && [[ ! -z ${VM_ID} ]]; then
                            reConfigureBackupParam "${VM_NAME}"
                            dumpVMConfigurations
                    fi
    
    		VMFS_VOLUME=$(grep -E "\"${VM_NAME}\"" /tmp/vms_list | awk -F ";" '{print $3}' | sed 's/\[//;s/\]//;s/"//g')
    		VMX_CONF=$(grep -E "\"${VM_NAME}\"" /tmp/vms_list | awk -F ";" '{print $4}' | sed 's/\[//;s/\]//;s/"//g')
    		VMX_PATH="/vmfs/volumes/${VMFS_VOLUME}/${VMX_CONF}"
    		VMX_DIR=$(dirname "${VMX_PATH}")
    
    		#storage info
    		if [[ ! -z ${VM_ID} ]] && [[ "${LOG_LEVEL}" != "dryrun" ]]; then
    			storageInfo "before"
    		fi
    
    		#ignore VM as it's in the exclusion list
    		if [ "${IGNORE_VM}" -eq 1 ]; then 
    			logger "debug" "Ignoring ${VM_NAME} for backup since its located in exclusion list\n"			
    		#checks to see if we can pull out the VM_ID
    		elif [ -z ${VM_ID} ]; then
    			logger "info" "ERROR: failed to locate and extract VM_ID for ${VM_NAME}!\n"
    			VM_FAILED=1
    
    		elif [ "${LOG_LEVEL}" == "dryrun" ]; then
    			logger "dryrun" "###############################################"
    			logger "dryrun" "Virtual Machine: $VM_NAME"
    			logger "dryrun" "VM_ID: $VM_ID"
    			logger "dryrun" "VMX_PATH: $VMX_PATH"
    			logger "dryrun" "VMX_DIR: $VMX_DIR"
    			logger "dryrun" "VMX_CONF: $VMX_CONF"
    			logger "dryrun" "VMFS_VOLUME: $VMFS_VOLUME"
    			logger "dryrun" "VMDK(s): "
    			TOTAL_VM_SIZE=0
    			getVMDKs
    			OLD_IFS="${IFS}"
                            IFS=":"
                            for j in ${VMDKS};
                            do
    				J_VMDK=$(echo "${j}" | awk -F "###" '{print $1}')
    				J_VMDK_SIZE=$(echo "${j}" | awk -F "###" '{print $2}')
    				logger "dryrun" "\t${J_VMDK}\t${J_VMDK_SIZE} GB"
    			done
    			HAS_INDEPENDENT_DISKS=0
    			logger "dryrun" "INDEPENDENT VMDK(s): "
    			for k in ${INDEP_VMDKS};
    			do
    				HAS_INDEPENDENT_DISKS=1
    				K_VMDK=$(echo "${k}" | awk -F "###" '{print $1}')
    				K_VMDK_SIZE=$(echo "${k}" | awk -F "###" '{print $2}')
    				logger "dryrun" "\t${K_VMDK}\t${K_VMDK_SIZE} GB"
    			done
    			IFS="${OLD_IFS}"
    			VMDKS=""
    			INDEP_VMDKS=""
    			logger "dryrun" "TOTAL_VM_SIZE_TO_BACKUP: ${TOTAL_VM_SIZE} GB"
    			if [ ${HAS_INDEPENDENT_DISKS} -eq 1 ]; then
    				logger "dryrun" "Snapshots can not be taken for indepdenent disks!"
    				logger "dryrun" "THIS VIRTUAL MACHINE WILL NOT HAVE ALL ITS VMDKS BACKED UP!"
    			fi
    
    			ls "${VMX_DIR}" | grep -q "\-delta\.vmdk" > /dev/null 2>&1;
    			if [ $? -eq 0 ]; then
    				logger "dryrun" "Snapshots found for this VM, please commit all snapshots before continuing!"
    				logger "dryrun" "THIS VIRTUAL MACHINE WILL NOT BE BACKED UP DUE TO EXISTING SNAPSHOTS!"
    			fi
    
    			if [ ${TOTAL_VM_SIZE} -eq 0 ]; then
    				logger "dryrun" "THIS VIRTUAL MACHINE WILL NOT BE BACKED UP DUE TO EMPTY VMDK LIST!"
    			fi
    			logger "dryrun" "###############################################\n"
    
                    #checks to see if the VM has any snapshots to start with
                    elif ls "${VMX_DIR}" | grep -q "\-delta\.vmdk" > /dev/null 2>&1; then
    	                logger "info" "Snapshot found for ${VM_NAME}, backup will not take place\n"
    			VM_FAILED=1
    
                    elif [[ -f "${VMX_PATH}" ]] && [[ ! -z "${VMX_PATH}" ]]; then
    		 	#nfs case and backup to root path of your NFS mount 	
    	                if [ ${ENABLE_NON_PERSISTENT_NFS} -eq 1 ] ; then 
    	                	BACKUP_DIR="/vmfs/volumes/${NFS_LOCAL_NAME}/${NFS_VM_BACKUP_DIR}/${VM_NAME}"
                                    if [[ -z ${VM_NAME} ]] || [[ -z ${NFS_LOCAL_NAME} ]] || [[ -z ${NFS_VM_BACKUP_DIR} ]]; then
                                            logger "info" "ERROR: Variable BACKUP_DIR was not set properly, please ensure all required variables for non-persistent NFS backup option has been defined"
                                            exit 1
                                    fi
    
    	              	#non-nfs (SAN,LOCAL)  	
    	                else
    	                	BACKUP_DIR="${VM_BACKUP_VOLUME}/${VM_NAME}"
                                    if [[ -z ${VM_BACKUP_VOLUME} ]]; then
                                            logger "info" "ERROR: Variable VM_BACKUP_VOLUME was not defined"
                                            exit 1
                                    fi
    	                fi
    
    			#initial root VM backup directory
    			if [ ! -d "${BACKUP_DIR}" ]; then
    				mkdir -p "${BACKUP_DIR}"
    				if [ ! -d "${BACKUP_DIR}" ]; then
    					logger "info" "Unable to create \"${BACKUP_DIR}\"! - Ensure VM_BACKUP_VOLUME was defined correctly"
    					exit 1
    				fi
    	                fi
    
    			# directory name of the individual Virtual Machine backup followed by naming convention followed by count
    			VM_BACKUP_DIR="${BACKUP_DIR}/${VM_NAME}-${VM_BACKUP_DIR_NAMING_CONVENTION}"
    
    			# Rsync relative path variable if needed
    			RSYNC_LINK_DIR="./${VM_NAME}-${VM_BACKUP_DIR_NAMING_CONVENTION}"
    
    			mkdir -p "${VM_BACKUP_DIR}"
    
    			cp "${VMX_PATH}" "${VM_BACKUP_DIR}"
    
    			#new variable to keep track on whether VM has independent disks
    			VM_HAS_INDEPENDENT_DISKS=0
    
    			#extract all valid VMDK(s) from VM
    			getVMDKs
    
    			if [ ! -z ${INDEP_VMDKS} ]; then
    				VM_HAS_INDEPENDENT_DISKS=1
    			fi
    
    			ORGINAL_VM_POWER_STATE=$(${VMWARE_CMD} vmsvc/power.getstate ${VM_ID} | tail -1)
    			CONTINUE_TO_BACKUP=1	
    	
    			#section that will power down a VM prior to taking a snapshot and backup and power it back on
    			if [ ${POWER_VM_DOWN_BEFORE_BACKUP} -eq 1 ]; then
    				START_ITERATION=0
    				logger "info" "Powering off initiated for ${VM_NAME}, backup will not begin until VM is off..."
    
    				${VMWARE_CMD} vmsvc/power.shutdown ${VM_ID} > /dev/null 2>&1
    				while ${VMWARE_CMD} vmsvc/power.getstate ${VM_ID} | grep -i "Powered on" > /dev/null 2>&1;
    				do
    					#enable hard power off code
    					if [ ${ENABLE_HARD_POWER_OFF} -eq 1 ]; then
    						if [ ${START_ITERATION} -ge ${ITER_TO_WAIT_SHUTDOWN} ]; then
    							logger "info" "Hard power off occured for ${VM_NAME}, waited for $((ITER_TO_WAIT_SHUTDOWN*60)) seconds" 
    							${VMWARE_CMD} vmsvc/power.off ${VM_ID} > /dev/null 2>&1 
    							#this is needed for ESXi, even the hard power off did not take affect right away
    							sleep 60
    							break
    						fi
    					fi
    
    					logger "info" "VM is still on - Iteration: ${START_ITERATION} - sleeping for 60secs (Duration: $((START_ITERATION*60)) seconds)"
            	                        sleep 60
    
    					#logic to not backup this VM if unable to shutdown
    					#after certain timeout period
    					if [ ${START_ITERATION} -ge ${POWER_DOWN_TIMEOUT} ]; then
    						logger "info" "Unable to power off ${VM_NAME}, waited for $((POWER_DOWN_TIMEOUT*60)) seconds! Ignoring ${VM_NAME} for backup!"
    						VM_FAILED=1
    						CONTINUE_TO_BACKUP=0
    						break
    					fi
    					START_ITERATION=$((START_ITERATION + 1))
    				done
    				if [ ${CONTINUE_TO_BACKUP} -eq 1 ]; then
    					logger "info" "VM is powerdOff"
    				fi
    			fi
    
    			if [ ${CONTINUE_TO_BACKUP} -eq 1 ]; then 
    				logger "info" "Initiate backup for ${VM_NAME}"
    				startTimer
    
    				SNAP_SUCCESS=1
    				VM_VMDK_FAILED=0
    
    				#powered on VMs only
                            	if [[ ! ${POWER_VM_DOWN_BEFORE_BACKUP} -eq 1 ]] && [[ "${ORGINAL_VM_POWER_STATE}" != "Powered off" ]]; then
    					SNAPSHOT_NAME="ghettoVCB-snapshot-$(date +%F)"
    					logger "info" "Creating Snapshot \"${SNAPSHOT_NAME}\" for ${VM_NAME}"
            	                        ${VMWARE_CMD} vmsvc/snapshot.create ${VM_ID} "${SNAPSHOT_NAME}" "${SNAPSHOT_NAME}" "${VM_SNAPSHOT_MEMORY}" "${VM_SNAPSHOT_QUIESCE}" > /dev/null 2>&1
    
    					logger "debug" "Waiting for snapshot \"${SNAPSHOT_NAME}\" to be created"
    					logger "debug" "Snapshot timeout set to: $((SNAPSHOT_TIMEOUT*60)) seconds"
                                            START_ITERATION=0
    					while [ $(${VMWARE_CMD} vmsvc/snapshot.get ${VM_ID} | wc -l) -eq 1 ]
    					do
    						if [ ${START_ITERATION} -ge ${SNAPSHOT_TIMEOUT} ]; then
    							logger "info" "Snapshot timed out, failed to create snapshot: \"${SNAPSHOT_NAME}\" for ${VM_NAME}"
    							SNAP_SUCCESS=0
    							echo "ERROR: Unable to backup ${VM_NAME} due to snapshot creation" >> ${VM_BACKUP_DIR}/STATUS.error
    							break
    						fi
    
    						logger "debug" "Waiting for snapshot creation to be completed - Iteration: ${START_ITERATION} - sleeping for 60secs (Duration: $((START_ITERATION*30)) seconds)"
                                                    sleep 60
    						
    						START_ITERATION=$((START_ITERATION + 1))
    					done
                    	        fi
    
    				if [ ${SNAP_SUCCESS} -eq 1 ]; then 
    					OLD_IFS="${IFS}"
    					IFS=":"
    					for j in ${VMDKS};
    					do
    						VMDK=$(echo "${j}" | awk -F "###" '{print $1}')
    						isVMDKFound=0
    		
    						findVMDK "${VMDK}"
    
    						if [[ $isVMDKFound -eq 1 ]] || [[ "${VMDK_FILES_TO_BACKUP}" == "all" ]]; then 
    							#added this section to handle VMDK(s) stored in different datastore than the VM
    							echo ${VMDK} | grep "^/vmfs/volumes" > /dev/null 2>&1
    							if [ $? -eq 0 ]; then
    								SOURCE_VMDK="${VMDK}"
    								DS_UUID="$(echo ${VMDK#/vmfs/volumes/*})"
    								DS_UUID="$(echo ${DS_UUID%/*/*})"
    								VMDK_DISK="$(echo ${VMDK##/*/})"
    								mkdir -p "${VM_BACKUP_DIR}/${DS_UUID}"
    								DESTINATION_VMDK="${VM_BACKUP_DIR}/${DS_UUID}/${VMDK_DISK}"
    							else
    								SOURCE_VMDK="${VMX_DIR}/${VMDK}"
    								DESTINATION_VMDK="${VM_BACKUP_DIR}/${VMDK}"
    							fi
    	
    							#support for vRDM and deny pRDM
    							grep "vmfsPassthroughRawDeviceMap" "${SOURCE_VMDK}" > /dev/null 2>&1
    							if [ $? -eq 1 ]; then
    								FORMAT_OPTION="UNKNOWN"
    								if [ "${DISK_BACKUP_FORMAT}" == "zeroedthick" ]; then
    									if [[ "${VER}" == "4" ]] || [[ "${VER}" == "5" ]] ; then
    										FORMAT_OPTION="zeroedthick"
    									else
    										FORMAT_OPTION=""
    									fi
    		        		        	        elif [ "${DISK_BACKUP_FORMAT}" == "2gbsparse" ]; then
    									FORMAT_OPTION="2gbsparse"
    		                		        	elif [ "${DISK_BACKUP_FORMAT}" == "thin" ]; then
    									 FORMAT_OPTION="thin"
    				                	        elif [ "${DISK_BACKUP_FORMAT}" == "eagerzeroedthick" ]; then
    									if [[ "${VER}" == "4" ]] || [[ "${VER}" == "5" ]] ; then
    										FORMAT_OPTION="eagerzeroedthick"
                            	        				else
    										FORMAT_OPTION=""
    	                                        			fi
    	        	                        		fi
    
    								if  [ "${FORMAT_OPTION}" == "UNKNOWN" ]; then
    									logger "info" "ERROR: wrong DISK_BACKUP_FORMAT \"${DISK_BACKUP_FORMAT}\ specified for ${VM_NAME}"
    									VM_VMDK_FAILED=1
    								else
    									VMDK_OUTPUT=$(mktemp /tmp/ghettovcb.XXXXXX)
    									tail -f "${VMDK_OUTPUT}" &
    									TAIL_PID=$!
    
    									ADAPTER_FORMAT=$(grep -i "ddb.adapterType" "${SOURCE_VMDK}" | awk -F "=" '{print $2}' | sed -e 's/^[[:blank:]]*//;s/[[:blank:]]*$//;s/"//g')
    
    									if  [ -z "${FORMAT_OPTION}" ] ; then
    										logger "debug" "${VMKFSTOOLS_CMD} -i \"${SOURCE_VMDK}\" -a \"${ADAPTER_FORMAT}\" \"${DESTINATION_VMDK}\""
    										${VMKFSTOOLS_CMD} -i "${SOURCE_VMDK}" -a "${ADAPTER_FORMAT}" "${DESTINATION_VMDK}" > "${VMDK_OUTPUT}" 2>&1					
    									else 
    										logger "debug" "${VMKFSTOOLS_CMD} -i \"${SOURCE_VMDK}\" -a \"${ADAPTER_FORMAT}\" -d \"${FORMAT_OPTION}\" \"${DESTINATION_VMDK}\""
    										${VMKFSTOOLS_CMD} -i "${SOURCE_VMDK}" -a "${ADAPTER_FORMAT}" -d "${FORMAT_OPTION}" "${DESTINATION_VMDK}" > "${VMDK_OUTPUT}" 2>&1
    									fi
    									
    									VMDK_EXIT_CODE=$?
    									kill "${TAIL_PID}"
    									cat "${VMDK_OUTPUT}" >> "${REDIRECT}"
    									echo >> "${REDIRECT}"
    									echo
    									rm "${VMDK_OUTPUT}"
    
    									if [ "${VMDK_EXIT_CODE}" != 0 ] ; then
    										logger "info" "ERROR: error in backing up of \"${SOURCE_VMDK}\" for ${VM_NAME}"
    										VM_VMDK_FAILED=1
    									fi
    								fi
    							else
                    	        	        		logger "info" "WARNING: A physical RDM \"${SOURCE_VMDK}\" was found for ${VM_NAME}, which will not be backed up"
    								VM_VMDK_FAILED=1
                            				fi
    						fi
    					done
    					IFS="${OLD_IFS}"
    				fi
    
    				#powered on VMs only w/snapshots
                            	if [[ ${SNAP_SUCCESS} -eq 1 ]] && [[ ! ${POWER_VM_DOWN_BEFORE_BACKUP} -eq 1 ]] && [[ "${ORGINAL_VM_POWER_STATE}" == "Powered on" ]] || [[ "${ORGINAL_VM_POWER_STATE}" == "Suspended" ]]; then
    					if [ "${NEW_VIMCMD_SNAPSHOT}" == "yes" ]; then
    						SNAPSHOT_ID=$(${VMWARE_CMD} vmsvc/snapshot.get ${VM_ID} | grep -E '(Snapshot Name|Snapshot Id)' | grep -A1 ${SNAPSHOT_NAME} | grep "Snapshot Id" | awk -F ":" '{print $2}' | sed -e 's/^[[:blank:]]*//;s/[[:blank:]]*$//')
    						${VMWARE_CMD} vmsvc/snapshot.remove ${VM_ID} ${SNAPSHOT_ID} > /dev/null 2>&1
    					else
                                    		${VMWARE_CMD} vmsvc/snapshot.remove ${VM_ID} > /dev/null 2>&1
    					fi
    
    	                                #do not continue until all snapshots have been committed
            	                        logger "info" "Removing snapshot from ${VM_NAME} ..."
                    	                while ls "${VMX_DIR}" | grep -q "\-delta\.vmdk";
                            	        do
                                    	        sleep 5
    	                                done
            	                fi
    
    				if [[ ${POWER_VM_DOWN_BEFORE_BACKUP} -eq 1 ]] && [[ "${ORGINAL_VM_POWER_STATE}" == "Powered on" ]]; then
            	                        #power on vm that was powered off prior to backup
                    	                logger "info" "Powering back on ${VM_NAME}"
                            	        ${VMWARE_CMD} vmsvc/power.on ${VM_ID} > /dev/null 2>&1
    	                        fi
    
    				TMP_IFS=${IFS}
                    	        IFS=${ORIG_IFS}
    	                        if [ ${ENABLE_COMPRESSION} -eq 1 ]; then
    					COMPRESSED_ARCHIVE_FILE="${BACKUP_DIR}/${VM_NAME}-${VM_BACKUP_DIR_NAMING_CONVENTION}.gz"
    
            	                        logger "info" "Compressing VM backup \"${COMPRESSED_ARCHIVE_FILE}\"..."
    					if [ ${IS_4I} -eq 1 ]; then
    						busybox tar -cz -C "${BACKUP_DIR}" "${VM_NAME}-${VM_BACKUP_DIR_NAMING_CONVENTION}" -f "${COMPRESSED_ARCHIVE_FILE}"
    					else 
    						tar -cz -C "${BACKUP_DIR}" "${VM_NAME}-${VM_BACKUP_DIR_NAMING_CONVENTION}" -f "${COMPRESSED_ARCHIVE_FILE}"
    					fi
    					
    					# verify compression
    					if [[ $? -eq 0 ]] && [[ -f "${COMPRESSED_ARCHIVE_FILE}" ]]; then
    						logger "info" "Successfully compressed backup for ${VM_NAME}!\n"
    						COMPRESSED_OK=1
    					else
    						logger "info" "Error in compressing ${VM_NAME}!\n"
    						COMPRESSED_OK=0
    					fi
                    	                rm -rf "${VM_BACKUP_DIR}"
    					checkVMBackupRotation "${BACKUP_DIR}" "${VM_NAME}"
    	                        else
            	                	checkVMBackupRotation "${BACKUP_DIR}" "${VM_NAME}"
                    	        fi
                            	IFS=${TMP_IFS}
    	                        VMDKS=""
    				INDEP_VMDKS=""
    
    				endTimer
    				if [ ${SNAP_SUCCESS} -ne 1 ]; then
    					logger "info" "ERROR: Unable to backup ${VM_NAME} due to snapshot creation!\n"
    					[[ ${ENABLE_COMPRESSION} -eq 1 ]] && [[ $COMPRESSED_OK -eq 1 ]] || echo "ERROR: Unable to backup ${VM_NAME} due to snapshot creation" >> ${VM_BACKUP_DIR}/STATUS.error
    					VM_FAILED=1
    				elif [ ${VM_VMDK_FAILED} -ne 0 ]; then
    					logger "info" "ERROR: Unable to backup ${VM_NAME} due to error in VMDK backup!\n"
    					[[ ${ENABLE_COMPRESSION} -eq 1 ]] && [[ $COMPRESSED_OK -eq 1 ]] || echo "ERROR: Unable to backup ${VM_NAME} due to error in VMDK backup" >> ${VM_BACKUP_DIR}/STATUS.error
    					VMDK_FAILED=1
    				elif [ ${VM_HAS_INDEPENDENT_DISKS} -eq 1 ]; then
    					logger "info" "WARN: ${VM_NAME} has some Independent VMDKs that can not be backed up!\n";
    					[[ ${ENABLE_COMPRESSION} -eq 1 ]] && [[ $COMPRESSED_OK -eq 1 ]] || echo "WARN: ${VM_NAME} has some Independent VMDKs that can not be backed up" > ${VM_BACKUP_DIR}/STATUS.warn
    					VMDK_FAILED=1
    					#experimental
                                            #create symlink for the very last backup to support rsync functionality for additinal replication
                                            if [ "${RSYNC_LINK}" -eq 1 ]; then
                                                    SYMLINK_DST=${VM_BACKUP_DIR}
                                                    if [ ${ENABLE_COMPRESSION} -eq 1 ]; then
                                                            SYMLINK_DST1="${RSYNC_LINK_DIR}.gz"
                                                    else
                                                            SYMLINK_DST1=${RSYNC_LINK_DIR}
                                                    fi
                                                    SYMLINK_SRC="$(echo "${SYMLINK_DST%*-*-*-*_*-*-*}")-symlink"
                                                    logger "info" "Creating symlink \"${SYMLINK_SRC}\" to \"${SYMLINK_DST1}\""
                                                    ln -sf "${SYMLINK_DST1}" "${SYMLINK_SRC}"
                                            fi
    
                                            #storage info after backup
                                            storageInfo "after"
    				else
    					logger "info" "Successfully completed backup for ${VM_NAME}!\n"
    					[[ ${ENABLE_COMPRESSION} -eq 1 ]] && [[ $COMPRESSED_OK -eq 1 ]] || echo "Successfully completed backup" > ${VM_BACKUP_DIR}/STATUS.ok
    					VM_OK=1
    				
    					#experimental
    				        #create symlink for the very last backup to support rsync functionality for additinal replication
    				        if [ "${RSYNC_LINK}" -eq 1 ]; then
    						SYMLINK_DST=${VM_BACKUP_DIR}
    						if [ ${ENABLE_COMPRESSION} -eq 1 ]; then
    							SYMLINK_DST1="${RSYNC_LINK_DIR}.gz"
    						else
    							SYMLINK_DST1=${RSYNC_LINK_DIR}
    						fi
    						SYMLINK_SRC="$(echo "${SYMLINK_DST%*-*-*-*_*-*-*}")-symlink"
    				                logger "info" "Creating symlink \"${SYMLINK_SRC}\" to \"${SYMLINK_DST1}\""
    				                ln -sf "${SYMLINK_DST1}" "${SYMLINK_SRC}"
    				        fi
    
    					#storage info after backup
                            		storageInfo "after"
    				fi
    	                else
    				if [ ${CONTINUE_TO_BACKUP} -eq 0 ]; then
    					logger "info" "ERROR: Failed to backup ${VM_NAME}!\n"
    					VM_FAILED=1
    				else
            	                	logger "info" "ERROR: Failed to lookup ${VM_NAME}!\n"
    					VM_FAILED=1
    				fi
    	                fi	
    		fi
            done
    	unset IFS
    
            if [[ ${ENABLE_NON_PERSISTENT_NFS} -eq 1 ]] && [[ ${UNMOUNT_NFS} -eq 1 ]] && [[ "${LOG_LEVEL}" != "dryrun" ]]; then
    		logger "debug" "Sleeping for 30seconds before unmounting NFS volume"
    		sleep 30
    		${VMWARE_CMD} hostsvc/datastore/destroy ${NFS_LOCAL_NAME}	
    	fi
    }
    
    getFinalStatus() {
    	if [[ "${LOG_TYPE}" == "dryrun" ]]; then
    		FINAL_STATUS="###### Final status: OK, only a dryrun. ######"
    		LOG_STATUS="OK"
    		EXIT=0
    	elif [[ $VM_OK == 1 ]] && [[ $VM_FAILED == 0 ]] && [[ $VMDK_FAILED == 0 ]]; then
    		FINAL_STATUS="###### Final status: All VMs backed up OK! ######"
    		LOG_STATUS="OK"
    		EXIT=0
    	elif [[ $VM_OK == 1 ]] && [[ $VM_FAILED == 0 ]] && [[ $VMDK_FAILED == 1 ]]; then
    		FINAL_STATUS="###### Final status: WARNING: All VMs backed up, but some disk(s) failed! ######"
    		LOG_STATUS="WARNING"
    		EXIT=3
    	elif [[ $VM_OK == 1 ]] && [[ $VM_FAILED == 1 ]] && [[ $VMDK_FAILED == 0 ]]; then
    		FINAL_STATUS="###### Final status: ERROR: Only some of the VMs backed up! ######"
    		LOG_STATUS="ERROR"
    		EXIT=4
    	elif [[ $VM_OK == 1 ]] && [[ $VM_FAILED == 1 ]] && [[ $VMDK_FAILED == 1 ]]; then
    		FINAL_STATUS="###### Final status: ERROR: Only some of the VMs backed up, and some disk(s) failed! ######"
    		LOG_STATUS="ERROR"
    		EXIT=5
    	elif [[ $VM_OK == 0 ]] && [[ $VM_FAILED == 1 ]]; then
    		FINAL_STATUS="###### Final status: ERROR: All VMs failed! ######"
    		LOG_STATUS="ERROR"
    		EXIT=6
    	elif [[ $VM_OK == 0 ]]; then
    		FINAL_STATUS="###### Final status: ERROR: No VMs backed up! ######"
    		LOG_STATUS="ERROR"
    		EXIT=7
    	fi
    	logger "info" "$FINAL_STATUS\n"
    }
    
    buildHeaders() {
    	EMAIL_ADDRESS=$1	
    
    	echo -ne "HELO $(hostname -s)\r\n" > "${EMAIL_LOG_HEADER}"
            echo -ne "MAIL FROM: <${EMAIL_FROM}>\r\n" >> "${EMAIL_LOG_HEADER}"
            echo -ne "RCPT TO: <${EMAIL_ADDRESS}>\r\n" >> "${EMAIL_LOG_HEADER}"
            echo -ne "DATA\r\n" >> "${EMAIL_LOG_HEADER}"
            echo -ne "From: ${EMAIL_FROM}\r\n" >> "${EMAIL_LOG_HEADER}"
            echo -ne "To: ${EMAIL_ADDRESS}\r\n" >> "${EMAIL_LOG_HEADER}"
            echo -ne "Subject: ghettoVCB - ${FINAL_STATUS}\r\n" >> "${EMAIL_LOG_HEADER}"
    
            echo -en ".\r\n" >> "${EMAIL_LOG_OUTPUT}"
            echo -en "QUIT\r\n" >> "${EMAIL_LOG_OUTPUT}"
    
            cat "${EMAIL_LOG_HEADER}" > "${EMAIL_LOG_CONTENT}"
            cat "${EMAIL_LOG_OUTPUT}" >> "${EMAIL_LOG_CONTENT}"
    }
    
    sendMail() {
    	#close email message
    	if [ "${EMAIL_LOG}" -eq 1 ]; then
    		#validate firewall has email port open for ESXi 5
    		if [ "${VER}" == "5" ]; then
    			/sbin/esxcli network firewall ruleset rule list | grep "${EMAIL_SERVER_PORT}" > /dev/null 2>&1
    			if [ $? -eq 1 ]; then
    				logger "info" "ERROR: Please enable firewall rule for email traffic on port ${EMAIL_SERVER_PORT}\n"
    				logger "info" "Please refer to ghettoVCB documentation for ESXi 5 firewall configuration\n"
    			fi
    		fi
    
    		echo "${EMAIL_TO}" | grep "," > /dev/null 2>&1
    		if [ $? -eq 0 ]; then
    			ORIG_IFS=${IFS}
    			IFS=','
    			for i in ${EMAIL_TO};
    			do
    				buildHeaders ${i}	
    				"${NC_BIN}" -i "${EMAIL_DELAY_INTERVAL}" "${EMAIL_SERVER}" "${EMAIL_SERVER_PORT}" < "${EMAIL_LOG_CONTENT}" > /dev/null 2>&1
    				if [ $? -eq 1 ]; then
    					logger "info" "ERROR: Failed to email log output to ${EMAIL_SERVER}:${EMAIL_SERVER_PORT} to ${EMAIL_TO}\n"
    				fi
    			done
    			unset IFS
    		else
    			buildHeaders ${EMAIL_TO}
    			"${NC_BIN}" -i "${EMAIL_DELAY_INTERVAL}" "${EMAIL_SERVER}" "${EMAIL_SERVER_PORT}" < "${EMAIL_LOG_CONTENT}" > /dev/null 2>&1
                            if [ $? -eq 1 ]; then
                            	logger "info" "ERROR: Failed to email log output to ${EMAIL_SERVER}:${EMAIL_SERVER_PORT} to ${EMAIL_TO}\n"
                            fi
    		fi
    			
    		if [ "${EMAIL_DEBUG}" -eq 1 ]; then
    			logger "info" "Email log output will not be deleted and is stored in ${EMAIL_LOG_CONTENT}"
    		else
    			logger "info" "Removing ${EMAIL_LOG_OUTPUT} and ${EMAIL_LOG_HEADER} and ${EMAIL_LOG_CONTENT}"
    			rm -f "${EMAIL_LOG_OUTPUT}"
    			rm -f "${EMAIL_LOG_HEADER}"
    			rm -f "${EMAIL_LOG_CONTENT}"
    		fi
    	fi
    }
    
    ####################
    #		   #
    # Start of Script  #
    #		   #
    ####################
    
    IS_4I=0
    
    if [ ! -f /bin/bash ]; then
    	IS_4I=1
    fi
    
    USE_VM_CONF=0
    USE_GLOBAL_CONF=0
    BACKUP_ALL_VMS=0
    EXCLUDE_SOME_VMS=0
    EMAIL_LOG_HEADER=/tmp/ghettoVCB-email-$$.header
    EMAIL_LOG_OUTPUT=/tmp/ghettoVCB-email-$$.log
    EMAIL_LOG_CONTENT=/tmp/ghettoVCB-email-$$.content
    
    #read user input
    while getopts ":af:c:g:l:d:e:" ARGS; do
            case $ARGS in
    		a)
    			BACKUP_ALL_VMS=1
    			VM_FILE="/tmp/backup_all_vms_on-$(hostname)"
    			touch "${VM_FILE}"
    			;;			
                    f)      VM_FILE="${OPTARG}"
                            ;;
    		e)
    			VM_EXCLUSION_FILE="${OPTARG}"
    			EXCLUDE_SOME_VMS=1
    			;;
    		c)
    			CONFIG_DIR="${OPTARG}"
    			USE_VM_CONF=1
    			;;
    		g)
    			GLOBAL_CONF="${OPTARG}"
    			USE_GLOBAL_CONF=1
    			;;
                    l)
                            LOG_OUTPUT="${OPTARG}"
                            ;;
                    d)
                            LOG_LEVEL="${OPTARG}"
                            ;;
                    :)
                            echo "Option -${OPTARG} requires an argument."
                            exit 1
                            ;;
                    *)
    			printUsage
                            exit 1
                            ;;
            esac
    done
    
    #performs a check on the number of commandline arguments + verifies $2 is a valid file
    sanityCheck $# 
    
    LOCKDIR=/tmp/ghettoVCB.lock
    
    if mkdir "${LOCKDIR}"
    then
    	GHETTOVCB_PID=$$
    
    	logger "info" "============================== ghettoVCB LOG START ==============================\n"
    	logger "debug" "Succesfully acquired lock directory - ${LOCKDIR}\n"
    	
    	# Remove lockdir when the script finishes, or when it receives a signal
    	trap 'rm -rf "${LOCKDIR}"' 0    # remove directory when script finishes
    	trap "exit 2" 1 2 3 13 15       # terminate script when receiving signal
    
    	ghettoVCB ${VM_FILE}
    
    	getFinalStatus
    
    	logger "debug" "Succesfully removed lock directory - ${LOCKDIR}\n"
    	logger "info" "============================== ghettoVCB LOG END ================================\n"
    
    	sendMail
    
    	rm -rf "${LOCKDIR}"
    	exit $EXIT
    else 
    	logger "info" "Failed to acquire lock, another instance of script may be running, giving up on ${LOCKDIR}\n"
    	exit 1
    fi
    

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