video on demand#!/usr/bin/bash
#variables
source=pool_0/local/base/source
dest=pool_0/local/base/source
node2="192.168.108.61 confirm shell "
schedule=60
#functions
function baseline {
zfs snapshot ${source}@currentfs
zfs send ${source}@currentfs|ssh ${node2} zfs receive ${dest}@currentfs
echo "baseline created"
}
function dryrun {
run=0
ret=5
echo dry
while (($run <= $ret))
do
ssh ${node2} zfs snapshot ${dest}@back.${run}
((run+=1))
echo $run
done
}
function vault {
run=0
ret=5
old=5
echo vault started
zfs rename ${source}@currentfs ${source}@back.0
zfs snapshot ${source}@currentfs
#rename older shapshots
ssh ${node2} zfs destroy ${dest}@back.${ret}
while (($run < $ret))
do
((run+=1))
((younger=${ret}-${run}))
ssh ${node2} zfs rename ${dest}@back.${younger} ${dest}@back.${old}
((old=${old}-1))
done
ssh ${node2} zfs rename ${dest}@currentfs ${dest}@back.0
#do the vault
zfs send -i ${source}@back.0 ${source}@currentfs | ssh ${node2} zfs receive ${dest}@currentfs
zfs destroy ${source}@back.0
echo "vault done"
}
#main
baseline
dryrun
while true
do
vault
sleep $schedule
done