ceph-osd: exit gracefully when no data partition

When using collocated or non-collocated osd_scenarios (ceph-disk) and
trying to deterime the OSD_DEVICE from the OSD_ID passed to the systemd
unit then we can be in a situation where the OSD hasn't been activated
but the OSD ID exists.
This means the data partition isn't in activate state and the ceph-disk
list command won't show the OSD ID on the data partition.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1850377

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>

roles/ceph-osd/templates/ceph-osd-run.sh.j2

@@ -17,6 +17,10 @@ function id_to_device () {
  {{ container_binary }} run --rm --net=host --ulimit nofile=1024:4096 --ipc=host --pid=host --privileged=true -v /etc/ceph:/etc/ceph:z -v /var/lib/ceph/:/var/lib/ceph/:z -v /dev:/dev -v /etc/localtime:/etc/localtime:ro -e DEBUG=verbose -e CLUSTER={{ cluster }} {{ ceph_docker_registry }}/{{ ceph_docker_image }}:{{ ceph_docker_image_tag }} osd_ceph_disk_dmcrypt_data_map
 {% endif %}
   DATA_PART=$(docker run --rm --ulimit nofile=1024:4096 --privileged=true -v /dev/:/dev/ -v /etc/ceph:/etc/ceph:z --entrypoint ceph-disk {{ ceph_docker_registry }}/{{ ceph_docker_image }}:{{ ceph_docker_image_tag }} list | grep ", osd\.${1}," | awk '{ print $1 }')
+  if [ -z "${DATA_PART}" ]; then
+    echo "No data partition found for OSD ${i}"
+    exit 1
+  fi
   if [[ "${DATA_PART}" =~ ^/dev/(cciss|nvme|loop) ]]; then
     OSD_DEVICE=${DATA_PART:0:-2}
   else