I have found that the use of mbuffer really speeds up the differential transfer process:
#!/bin/sh export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin: pool="zroot" destination="tank" host="1.2.3.4" today=`date +"$type-%Y-%m-%d"` yesterday=`date -v -1d +"$type-%Y-%m-%d"` # create today snapshot snapshot_today="$pool@$today" # look for a snapshot with this name if zfs list -H -o name -t snapshot | sort | grep "$snapshot_today$" > /dev/null; then echo " snapshot, $snapshot_today, already exists" exit 1 else echo " taking todays snapshot, $snapshot_today" | sendmail root zfs snapshot -r $snapshot_today fi # look for yesterday snapshot snapshot_yesterday="$pool@$yesterday" if zfs list -H -o name -t snapshot | sort | grep "$snapshot_yesterday$" > /dev/null; then echo " yesterday snapshot, $snapshot_yesterday, exists lets proceed with backup" zfs send -R -i $snapshot_yesterday $snapshot_today | mbuffer -q -v 0 -s 128k -m 1G | ssh root@$host "mbuffer -s 128k -m 1G | zfs receive -Fd $destination" > /dev/null echo " backup complete destroying yesterday snapshot" | sendmail root zfs destroy -r $snapshot_yesterday echo "Backup done" | sendmail root exit 0 else echo " missing yesterday snapshot aborting, $snapshot_yesterday" exit 1 fi -- George Kontostanos --- http://www.aisecure.net _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
