periodic script to make backup of system on flash drive FreeBSD 13. Scan HDD in system and send SMART to root

108.system-backup

#!/bin/sh -
#
# $FreeBSD$
#

if [ -r /etc/defaults/periodic.conf ]; then
	. /etc/defaults/periodic.conf
	source_periodic_confs
fi

rc=0

send_smart_info() {
	devices=$(geom disk list| grep -E "Geom name: ada." | sed "s/Geom name: //g" | xargs)

	for disk in ${devices}; do
		report=$(smartctl -x /dev/$disk)
		echo -e "Subject: $disk smart info\n$report" | sendmail root
	done
}


backup_system() {

	SNAPSHOT_DT="$(date +%Y-%m-%dT%T)"
	SNAPSHOT_NAME=zsys@$SNAPSHOT_DT
	BACKUP_DIRECTORY=/var/EMERGENCY-SYSTEM/root/backups

	echo -e "Create snapshot backup zsys@\033[1m$SNAPSHOT_NAME.ZFS.xz\033[0m..."
	zfs snapshot -r $SNAPSHOT_NAME

	snapshot_list="$(zfs list -o name -Ht snapshot | xargs)"

	for snapshot in ${snapshot_list}; do
		echo $snapshot | grep -q -E '^.*(tmp|ports|obj|src|log).*$'
		if [ $? -eq 0 ]; then
			echo -e "skip \033[1m$snapshot\033[0m"
		else
			echo -e "backup \033[1m$snapshot\033[0m"
			zfs send -v $snapshot | xz > $BACKUP_DIRECTORY/$(echo $snapshot|sed -r 's/\//+/g').ZFS.xz
		fi		
	done

	zfs destroy -r $SNAPSHOT_NAME

	# get list of snapshots
	#zfs list -t snapshot

	# boot from usb stick, then create pool and then restore to newly created pool this backup
	#xz -cdk $SNAPSHOT_NAME.xz | zfs receive -sv zsys

	# Unable to make snapshot on worked bootable system pool
	# cannot receive: cannot specify snapshot name for multi-snapshot stream
	#


	# create tar backup
	echo -e "Create tar backup \033[1m$SNAPSHOT_NAME.tar.xz\033[0m..."

	tar cJpvf $BACKUP_DIRECTORY/$SNAPSHOT_NAME.tar.xz --exclude=/data --exclude=/var/EMERGENCY-SYSTEM --exclude=/usr/ports --exclude=/usr/src --exclude=/usr/obj --exclude=/tmp --exclude=/var/tmp / 

	# find necessary files
	#tar ztpvf $SNAPSHOT_NAME.xz --include etc

	# delete files older then 90 days
	find $BACKUP_DIRECTORY/ -mtime +90d -exec rm {} \;

	return $rc
}

case "${monthly_system_backup_enable:-NO}" in
	[Yy][Ee][Ss])
	send_smart_info
	backup_system
	rc=$?
	;;
	*)
	rc=0
	;;
esac

exit $rc