#!/bin/sh # Copyright © 2015 Trond Endrestøl # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. #set -x set -o pipefail ZFS=/sbin/zfs DATE=/bin/date DATE_FLAGS=-u if [ "${1}" = "-h" -o "${1}" = "--help" ]; then help=1; fi if [ ${#} -lt 2 -o -n "${help}" ]; then echo "Usage: ${0} "; if [ -n "${help}" ]; then exit 0; else exit 69; fi; fi if ! ${ZFS} list ${1} >/dev/null 2>&1; then echo "${0}: dataset ${1} not found" >/dev/stderr; exit 69; fi if ${ZFS} list ${2} >/dev/null 2>&1; then echo "${0}: dataset ${2} exists" >/dev/stderr; exit 69; fi SNAPSHOT="automatic-transfer-${$}-`${DATE} ${DATE_FLAGS} +%Y-%m-%dT%H:%M:%S`" ${ZFS} snapshot ${1}@${SNAPSHOT} || exit ${ZFS} send -Lcep ${1}@${SNAPSHOT} | ${ZFS} receive -uv ${2} || exit ${ZFS} destroy ${1}@${SNAPSHOT} || exit ${ZFS} destroy ${2}@${SNAPSHOT} || exit