rework data path to /usr/local mapping by using a somewhat newer

possibility by HA to define the target path directly in config.yaml.
This allows to remove the S00DataMount init script to bind mount /data
to /usr/local as a workaround. This refs #2800.

buildroot-external/overlay/base/etc/init.d/S01InitHost

@@ -207,18 +207,25 @@ identify_host() {
 }
 
 init_host() {
-  # setup /dev_host for OCI/Docker and LXC environments (excluding HA)
-  if [[ "${HM_HOST}" =~ oci\|lxc ]] &&
-     [[ -z "${HM_RUNNING_IN_HA}" ]]; then
-    # To avoid sharing the whole host /dev with the container we
-    # mount devtmps in /dev_host and symlink the required devices
-    mount -o noatime -t devtmpfs devtmpfs /dev_host
-    if [[ -d "/dev_host" ]]; then
-      for device in raw-uart raw-uart1 eq3loop mmd_bidcos mmd_hmip usb rtc rtc0 rtc1; do
-        if [[ ! -e "/dev/${device}" ]]; then
-          ln -s "/dev_host/${device}" "/dev/${device}"
-        fi
-      done
+  # setup /dev_host for OCI/Docker and LXC environments
+  if [[ "${HM_HOST}" =~ oci\|lxc ]]; then
+    # when running in HA we just remount /dev to rw
+    if [[ -n "${HM_RUNNING_IN_HA}" ]]; then
+      # remount /dev as rw to allow multimacd to create
+      # mmd_bidcos/mmd_hmip later on
+      mount -o rw,remount /dev
+    else
+      # To avoid sharing the whole host /dev with the container we
+      # mount devtmps in /dev_host and symlink the required devices
+      # but not when running in HA
+      mount -o noatime -t devtmpfs devtmpfs /dev_host
+      if [[ -d "/dev_host" ]]; then
+        for device in raw-uart raw-uart1 eq3loop mmd_bidcos mmd_hmip usb rtc rtc0 rtc1; do
+          if [[ ! -e "/dev/${device}" ]]; then
+            ln -s "/dev_host/${device}" "/dev/${device}"
+          fi
+        done
+      fi
     fi
   fi
 }

home-assistant-addon-dev/config.yaml

@@ -16,7 +16,11 @@ panel_title: RaspberryMatic (snapshot)
 panel_icon: mdi:router-wireless
 startup: services
 map:
-  - backup:rw
+  - type: data
+    read_only: False
+    path: /usr/local
+  - type: backup
+    read_only: False
 init: false
 backup_pre: /bin/sh -c "/bin/echo 'load tclrega.so; rega system.Save()' | /bin/tclsh && /bin/sync"
 backup_exclude: