Backup files directly from ceph_mon docker container, download to docker container, then locally, and lastly copy offsite for backup.

cephbackup

sshlogin="username@xx.xx.xx.xx"
cephdir=vms
array=()
while IFS='' read -r line; do array+=("$line"); done < <(docker exec ceph_mon rbd ls -p "$cephdir")
for ID in "${array[@]}"; do
        echo "Do you want to skip this file: $ID"
        options=("yes" "no")
        select skipbackup in "${options[@]}"
        do
        case $skipbackup in
                "yes")
                        echo "skipping this file..."
                        break;;
                "no")
                        echo "exporting $ID..."
                        docker exec ceph_mon rbd export "$cephdir"/"$ID" ~/"$ID".raw
                        echo "copying $ID locally..."
                        docker cp ceph_mon:/root/"$ID".raw /root/"$ID".raw
                        echo "copying $ID to NAS..."
                        scp /root/"$ID".raw "$sshlogin":~
                        echo "deleting $ID on docker image..."
                        docker exec ceph_mon rm /root/"$ID".raw
                        echo "deleting $ID locally ..."
                        ssh -q "$sshlogin" test -f "~/$ID.raw" && rm /root/"$ID".raw  || scp /root/"$ID".raw "$sshlogin":~
                        break;;
        esac
        done
done