#!/usr/bin/env sh

if [ $# != 3 ]; then
    echo "usage: $0 <cache-fs> <base-pool> <days-old>"
    exit 1
fi

CACHEFS="${1}"
BASEPOOL="${2}"
DAYS_OLD=${3}

find "${CACHEFS}" -type f -atime +${DAYS_OLD} -printf '%P\n' | \
    rsync \
        --files-from=- \
        --archive \
        --acls \
        --xattrs \
        --atimes \
        --hard-links \
        --one-file-system \
        --quiet \
        --preallocate \
        --remove-source-files \
        --log-file=/tmp/mergerfs-cache-rsync.log \
        "${CACHEFS}/" \
        "${BASEPOOL}/"