smartos-bin/zonebackuptofile.sh

#!/bin/bash

usage()
{
    echo "Usage: $0 [ -z UUID ] [ -h hostname ] [ -p port ] [ -k KEY ] [ -n name ] [ -d dir ]" >&2
    exit 1
}

while getopts "z:h:p:k:n:d:" opt;
do
    case "$opt" in
        z)
            UUID=$OPTARG
            ;;
        h)
            HOSTNAME=$OPTARG
            ;;
        n)
            NAME=$OPTARG
            ;;
        p)
            PORT=$OPTARG
            ;;
        k)
            KEY=$OPTARG
            ;;
        d)
            DIR=$OPTARG
            ;;

        \?)
            echo "Error: Invalid Option: -${OPTARG}" >&2
            usage
            ;;
        :)
            echo "Error: -${OPTARG} requires an argument."
            usage
            ;;
        *)
            usage
            ;;
    esac
done

shift $((OPTIND-1))

if [ -z "${UUID}" ] || [ -z "${HOSTNAME}" ] || [ -z ${PORT} ] || [ -z ${KEY} ] || [ -z "${NAME}" ] || [ -z "${DIR}" ]; then
    usage
fi

SSH="ssh -i $KEY -p ${PORT} -o StrictHostKeyChecking=no"
DSTDIR="${DIR}/${NAME}"

#################
# functions
#################

create_snap()
{ 
    DATASET=$1
    echo "Creating snapshot of ${DATASET}..."
    /usr/sbin/zfs snapshot zones/${DATASET}@`date +%Y%m%d`
    check_err
    echo "...done."
}

send_snap()
{
    DATASET=$1
    echo "Sending snapshot of ${DATASET}..."

    # taking care for additional datasets
    SLASH=`echo ${DATASET} | grep -c '/'`

    if [ ${SLASH} -ne 0 ]; then
        RENAME=`echo ${DATASET} |  sed 's/\//-/'`
        /usr/sbin/zfs send zones/${DATASET}@`date +%Y%m%d` | ${SSH} ${HOSTNAME} "dd of=${DSTDIR}/${UUID}/${RENAME}.zfs bs=4M"
    else
        /usr/sbin/zfs send zones/${DATASET}@`date +%Y%m%d` | ${SSH} ${HOSTNAME} "dd of=${DSTDIR}/${DATASET}/${DATASET}.zfs bs=4M"
    fi

    check_err
    echo "...done."
}

check_snap()
{
    ZONE=$1
    echo "Checking for snapshot of ${ZONE}..."
    zfs list -t snapshot zones/${ZONE}@`date +%Y%m%d` 2>/dev/null 1>&2
}

check_err()
{
    STATUS=$?
    if [ ${STATUS} -ne 0 ]; then
        echo "Unexpected error: ${STATUS}"
        exit ${STATUS}
    fi
}

send_config()
{
    echo "Sending config to ${HOSTNAME}..."
    zonecfg -z ${UUID} export | ${SSH} ${HOSTNAME} "dd of=${DSTDIR}/${UUID}/${UUID}.cfg"
    check_err
    echo "...done."
}

create_dir()
{
    echo "Creating directory at ${HOSTNAME}..."
    ${SSH} ${HOSTNAME} mkdir -p ${DSTDIR}/${UUID}
    check_err
    echo "...done."
}

check_multidataset()
{
    echo "Looking for addtional children datasets in ${UUID}..."
    DATASET=`vmadm get ${UUID} | json datasets.0 | sed 's/zones\///' | tr -d '\n'`
    echo "...done."

    if [ ! -z "${DATASET}" ]; then
        echo "Finded children dataset: ${DATASET}"
        check_snap ${DATASET}

        if [ $? -ne 0 ]; then
            create_snap ${DATASET}
        else
            echo "Snapshot of ${DATASET} already available"
            echo "Skipping create snapshot..."
        fi
    send_snap ${DATASET}
    else
        echo "No children datasets finded."
    fi
}

#################
# main
#################

echo "---
BACKUP_SERVER: ${HOSTNAME}
UUID to backup: ${UUID}
---"

create_dir ${UUID}

check_snap ${UUID}

if [ $? -ne 0 ]; then
    create_snap ${UUID}
else
    echo "Snapshot of ${UUID} already available"
    echo "...done."
fi

send_snap ${UUID}

check_multidataset

send_config