Script to send from an unencrypted zfs pool to an encrypted zfs pool

send-to-encrypted.sh

#!/bin/sh

set -e
set -u

send=$1
receive=$2

echo "from $send"
echo "to   $receive"

for _fs in $(zfs list -H -o name -t filesystem -r "$send"); do
    fs=${_fs#$send}
    if [ -z "$fs" ]; then continue; fi
    first=$(zfs list -H -o name -t snapshot -r "$send$fs"|grep "^$send$fs@"|sed -ne '1s/.*@//p')
    last=$(zfs list -H -o name -t snapshot -r "$send$fs"|grep "^$send$fs@"|sed -ne '$s/.*@//p')
    echo "filesystem : ${fs:-<root>} from $first to $last"

    size=$(zfs send -nP -p "$send$fs@$first" | awk '$1 == "size" {print $2}')

    echo "full stream of $send$fs@$first into $receive$fs@$first"
    zfs send -p "$send$fs@$first" | pv -p -t -e -r -b -s "$size" | zfs receive -x encryption -u "$receive$fs"

    size=$(zfs send -nP -p -I "@$first" "$send$fs@$last" | awk '$1 == "size" {print $2}')

    echo "incremental stream from $send$fs@$first to @$last"
    zfs send -p -I "@$first" "$send$fs@$last" | pv -p -t -e -r -b -s "$size" | zfs receive -u "$receive$fs"
done

# vim:set ts=4 sw=4 ft=sh et: