selfBackup.sh

   1 #!/bin/sh
   2 ZROOT_BASE="zroot"
   3 SSH="/usr/bin/ssh"
   4 ZFS="/sbin/zfs "
   5 REMOTE="matarje"
   6 REMOTE_USER="david"
   7 REMOTE_KEY="~/.ssh/zfs"
   8 REMOTE_POOL="breiz/BCK/master/popeye"
   9 # ICLUDE="-o canmount=off"
  10 XCLUDE="-x mountpoint -x canmount"
  11
  12 # getting last snapshot id
  13 # if one cannot trust the snap id one can use creation time
  14
  15 ${ZFS} list -H -t snap -r zroot/JAILS/master@up && zfs destroy -r zroot/JAILS/master@up
  16
  17 for i in usr usr/home JAILS/master JAILS/master/php  JAILS/master/git JAILS/master/d14 JAILS/master/epee JAILS/master/synapse JAILS/master/mariadb  JAILS/master/next
  18 do
  19
  20 ZROOT="${ZROOT_BASE}/${i}"
  21 ZLAST=`${ZFS} list -o name -Hp -t snap -d 1 ${ZROOT} | cut -d '@' -f 2 | sort | tail -1`
  22 REMOTE_ZLAST=`${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`
  23
  24
  25 echo "sending incremental backup from " "${REMOTE_ZLAST} to ${ZLAST}" -- /${ZROOT}
  26 #
  27 ${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}
  28 done