#!/bin/sh
ZROOT_BASE="zroot"
SSH="/usr/bin/ssh"
ZFS="/sbin/zfs "
REMOTE="matarje"
REMOTE_USER="david"
REMOTE_KEY="~/.ssh/zfs"
REMOTE_POOL="breiz/BCK/master/popeye"
# ICLUDE="-o canmount=off"
XCLUDE="-x mountpoint -x canmount"

# getting last snapshot id
# if one cannot trust the snap id one can use creation time

${ZFS} list -H -t snap -r zroot/JAILS/master@up && zfs destroy -r zroot/JAILS/master@up 

for i in usr usr/home JAILS/master JAILS/master/php  JAILS/master/git JAILS/master/d14 JAILS/master/epee JAILS/master/synapse JAILS/master/mariadb  JAILS/master/next
do
	
ZROOT="${ZROOT_BASE}/${i}"
ZLAST=`${ZFS} list -o name -Hp -t snap -d 1 ${ZROOT} | cut -d '@' -f 2 | sort | tail -1` 
REMOTE_ZLAST=`${SSH} -i ${REMOTE_KEY} ${REMOTE_USER}@${REMOTE} ${ZFS} list -o name -Hp -t snap  -d 1 ${REMOTE_POOL}/${i} | cut -d '@' -f 2 | sort | tail -1` 


echo "sending incremental backup from " "${REMOTE_ZLAST} to ${ZLAST}" -- /${ZROOT}
#
${ZFS} send -L -e -c -i ${ZROOT}@${REMOTE_ZLAST} ${ZROOT}@${ZLAST} | ${SSH} -i  ${REMOTE_KEY} ${REMOTE_USER}@${REMOTE} ${ZFS} recv -Fdu ${ICLUDE} ${XCLUDE} ${REMOTE_POOL}
done